Product available Ships tomorrow

MPL 3x3x3 / N38 - lamellar magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500
Rating: 5

lamellar magnet

Catalog no 020148

GTIN/EAN: 5906301811541

5.00

length

3 mm [±0,1 mm]

Width

3 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

0.2 g

Magnetization Direction

↑ axial

Load capacity

0.34 kg / 3.37 N

Magnetic Induction

538.48 mT / 5385 Gs

Coating

[NiCuNi] Nickel

view properties »

0.1845 ZŁ with VAT / pcs + price for transport

0.1500 ZŁ net + 23% VAT / pcs

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Product card - MPL 3x3x3 / N38 - lamellar magnet

Specification / characteristics - MPL 3x3x3 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020148
GTIN/EAN	5906301811541
Production/Distribution	Dhit sp. z o.o. ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin	Poland / China / Germany
Customs code	85059029
length	3 mm [±0,1 mm]
Width	3 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	0.2 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.34 kg / 3.37 N
Magnetic Induction ~ ?	538.48 mT / 5385 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 3x3x3 / N38 - lamellar magnet

properties	values	units
remenance Br [min. - max.] ?	12.2-12.6	kGs
remenance Br [min. - max.] ?	1220-1260	mT
coercivity bHc ?	10.8-11.5	kOe
coercivity bHc ?	860-915	kA/m
actual internal force iHc	≥ 12	kOe
actual internal force iHc	≥ 955	kA/m
energy density [min. - max.] ?	36-38	BH max MGOe
energy density [min. - max.] ?	287-303	BH max KJ/m
max. temperature ?	≤ 80	°C

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

properties	values	units
Vickers hardness	≥550	Hv
Density	≥7.4	g/cm³
Curie Temperature TC	312 - 380	°C
Curie Temperature TF	593 - 716	°F
Specific resistance	150	μΩ⋅cm
Bending strength	250	MPa
Compressive strength	1000~1100	MPa
Thermal expansion parallel (∥) to orientation (M)	(3-4) x 10^-6	°C^-1
Thermal expansion perpendicular (⊥) to orientation (M)	-(1-3) x 10^-6	°C^-1
Young's modulus	1.7 x 10⁴	kg/mm²

Engineering analysis of the product - technical parameters

Presented information represent the result of a mathematical simulation. Results rely on models for the class Nd₂Fe₁₄B. Actual conditions may differ from theoretical values. Please consider these data as a supplementary guide during assembly planning.

Table 1: Static pull force (pull vs gap) - interaction chart
MPL 3x3x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg)	Risk Status
0 mm	5372 Gs 537.2 mT	0.34 kg / 340.0 g 3.3 N	weak grip
1 mm	2530 Gs 253.0 mT	0.08 kg / 75.4 g 0.7 N	weak grip
2 mm	1127 Gs 112.7 mT	0.01 kg / 15.0 g 0.1 N	weak grip
3 mm	562 Gs 56.2 mT	0.00 kg / 3.7 g 0.0 N	weak grip
5 mm	192 Gs 19.2 mT	0.00 kg / 0.4 g 0.0 N	weak grip
10 mm	35 Gs 3.5 mT	0.00 kg / 0.0 g 0.0 N	weak grip
15 mm	12 Gs 1.2 mT	0.00 kg / 0.0 g 0.0 N	weak grip
20 mm	5 Gs 0.5 mT	0.00 kg / 0.0 g 0.0 N	weak grip
30 mm	2 Gs 0.2 mT	0.00 kg / 0.0 g 0.0 N	weak grip
50 mm	0 Gs 0.0 mT	0.00 kg / 0.0 g 0.0 N	weak grip

Grip strength weakens significantly with every subsequent millimeter of gap. Note that every additional insulation layer (e.g., contamination, paint, dust) significantly reduces the pull force. Magnets operate strongest at the point of direct contact; air break drastically cuts the power. Observe how rapidly the load capacity fall, when the magnet does not touch directly to the metal substrate. When designing the mounting, discard unnecessary gaps.

Table 2: Slippage capacity (wall)
MPL 3x3x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg)
0 mm	Stal (~0.2)	0.07 kg / 68.0 g 0.7 N
1 mm	Stal (~0.2)	0.02 kg / 16.0 g 0.2 N
2 mm	Stal (~0.2)	0.00 kg / 2.0 g 0.0 N
3 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
5 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N

This section shows the theoretical shear load needed to initiate the shifting of the magnet downwards along a upright steel plate (considering typical friction coefficient). This value is a function of the air gap between the magnet and the metal.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 3x3x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.10 kg / 102.0 g 1.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.07 kg / 68.0 g 0.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.03 kg / 34.0 g 0.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.17 kg / 170.0 g 1.7 N

When hanging a holder on a vertical plane (e.g., a board), it will only hold only approx. 1/5 of its nominal power. Gravity and a low friction coefficient mean that magnets slip faster than they detach. Want to create a vertical fastening? Consider that the sliding force is significantly lower than the perpendicular breakaway force. On a painted metal, the holder will give way down under a much lighter cargo. Application of an anti-slip coating can drastically increase the grip.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 3x3x3 / N38

Steel thickness (mm)	% power	Real pull force (kg)
0.5 mm	10%	0.03 kg / 34.0 g 0.3 N
1 mm	25%	0.09 kg / 85.0 g 0.8 N
2 mm	50%	0.17 kg / 170.0 g 1.7 N
5 mm	100%	0.34 kg / 340.0 g 3.3 N
10 mm	100%	0.34 kg / 340.0 g 3.3 N

A too thin steel cannot absorb the full magnetic flux, which squanders power of the magnet. If you attach a powerful product to a thin surface, the field will penetrate right through and the attraction force will be weaker. To utilize the maximum of this neodymium's power, you require a sufficiently solid piece of steel. The saturation effect means that on delicate walls (e.g., appliance housings), the product holds weaker. We recommend selecting the steel cross-section according to the table below.

Table 5: Thermal stability (material behavior) - resistance threshold
MPL 3x3x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull	Status
20 °C	0.0%	0.34 kg / 340.0 g 3.3 N	OK
40 °C	-2.2%	0.33 kg / 332.5 g 3.3 N	OK
60 °C	-4.4%	0.33 kg / 325.0 g 3.2 N	OK
80 °C	-6.6%	0.32 kg / 317.6 g 3.1 N
100 °C	-28.8%	0.24 kg / 242.1 g 2.4 N

Ordinary NdFeB products irreversibly lose power above the temperature limit. Protect against heat – high temperature can permanently demagnetize this product. With increasing heat, the neodymium's force temporarily decreases. Refrain from using this product close to heaters higher than its safe range. Ignoring the limit will lead to destruction of magnetic properties.

*Important note: Temperature resistance is determined by both grade, as well as the dimension ratios. Flat magnets (pancake types) risk losing magnetic properties at lower temperatures than long magnets. Red status in the table points to permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MPL 3x3x3 / N38

Gap (mm)	Attraction (kg) (N-S)	Repulsion (kg) (N-N)
0 mm	1.60 kg / 1601 g 15.7 N 5 931 Gs	N/A
1 mm	0.80 kg / 803 g 7.9 N 7 610 Gs	0.72 kg / 723 g 7.1 N ~0 Gs
2 mm	0.36 kg / 355 g 3.5 N 5 061 Gs	0.32 kg / 320 g 3.1 N ~0 Gs
3 mm	0.15 kg / 155 g 1.5 N 3 343 Gs	0.14 kg / 139 g 1.4 N ~0 Gs
5 mm	0.03 kg / 34 g 0.3 N 1 568 Gs	0.03 kg / 31 g 0.3 N ~0 Gs
10 mm	0.00 kg / 2 g 0.0 N 384 Gs	0.00 kg / 0 g 0.0 N ~0 Gs
20 mm	0.00 kg / 0 g 0.0 N 70 Gs	0.00 kg / 0 g 0.0 N ~0 Gs
50 mm	0.00 kg / 0 g 0.0 N 6 Gs	0.00 kg / 0 g 0.0 N ~0 Gs

Two magnets interact from a significantly greater distance than a magnet and sheet combination. The setup of magnet-to-magnet produces a massive flux and a larger range of performance. Want to build a solid fastener? Utilize two neodymiums instead of a neodymium and a steel. Remember that when bringing together two magnets, the pinch force is huge. The repulsion force is a bit weaker than the connection force, but still significant.
*Field value in repulsion mode reaches ~0 Gs at the geometric center of the gap (caused by magnetic field nullification).

Table 7: Protective zones (electronics) - precautionary measures
MPL 3x3x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	2.5 cm
Hearing aid	10 Gs (1.0 mT)	2.0 cm
Mechanical watch	20 Gs (2.0 mT)	1.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	1.0 cm
Remote	50 Gs (5.0 mT)	1.0 cm
Payment card	400 Gs (40.0 mT)	0.5 cm
HDD hard drive	600 Gs (60.0 mT)	0.5 cm

A strong magnetic field poses a real danger to electronics and medical implants. These magnets generate a flux that disrupts operation of digital equipment. Notice: the unseen radiation passes through tissues and glass. Exceptional care must be exercised by people with hearing aids and drug dispensers. Influence will be felt by: mechanical watches, car keys, speakers, and displays. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - warning
MPL 3x3x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	41.58 km/h (11.55 m/s)	0.01 J
30 mm	72.02 km/h (20.01 m/s)	0.04 J
50 mm	92.98 km/h (25.83 m/s)	0.07 J
100 mm	131.49 km/h (36.53 m/s)	0.13 J

NdFeB products are prone to chipping – a strong collision with metal causes immediate chipping. Pay attention to connection velocity – a neodymium left loose becomes dangerous. Striking energy can cause material chips or injury to fingers. Be sure to control the product during mounting so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Use safety goggles when playing with powerful specimens.

Table 9: Corrosion resistance
MPL 3x3x3 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

Neodymium magnets are highly susceptible to corrosion without proper protection. Note the thickness of the protective layer.

Table 10: Electrical data (P_c)
MPL 3x3x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	495 Mx	5.0 µWb
P_c Coefficient	0.84	High (Stable)

Total magnetic flux passing through the magnet pole. Essential parameter when building generators as well as sensors. The P_c coefficient defines the working geometry.

Table 11: Physics of underwater searching
MPL 3x3x3 / N38

Environment	Effective steel pull	Effect
Air (land)	0.34 kg	Standard
Water (riverbed)	0.39 kg (+0.05 kg Buoyancy gain)	+14.5%

Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Wall mount (shear)

*Warning: On a vertical surface, the magnet holds only ~20% of its nominal pull.

2. Steel saturation

*Thin metal sheet (e.g. 0.5mm PC case) significantly reduces the holding force.

3. Power loss vs temp

*For standard magnets, the critical limit is 80°C.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.84

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The P_c (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher P_c value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Technical and environmental data

Chemical composition

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

Sustainability

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 020148-2025

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Newtons (N)

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Magnetic Induction

Induction (Gs)

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Component MPL 3x3x3 / N38 features a low profile and professional pulling force, making it a perfect solution for building separators and machines. As a block magnet with high power (approx. 0.34 kg), this product is available off-the-shelf from our warehouse in Poland. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.

Separating strong flat magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 3x3x3 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend care, because after separation, the magnets may want to violently snap back together, which threatens pinching the skin. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.

Plate magnets MPL 3x3x3 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. They work great as invisible mounts under tiles, wood, or glass. Customers often choose this model for workshop organization on strips and for advanced DIY and modeling projects, where precision and power count.

For mounting flat magnets MPL 3x3x3 / N38, we recommend utilizing strong epoxy glues (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Remember to roughen and wash the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.

The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. In practice, this means that this magnet has the greatest attraction force on its main planes (3x3 mm), which is ideal for flat mounting. This is the most popular configuration for block magnets used in separators and holders.

This model is characterized by dimensions 3x3x3 mm, which, at a weight of 0.2 g, makes it an element with impressive energy density. It is a magnetic block with dimensions 3x3x3 mm and a self-weight of 0.2 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Strengths and weaknesses of Nd₂Fe₁₄B magnets.

Pros

Besides their stability, neodymium magnets are valued for these benefits:

They retain magnetic properties for almost 10 years – the loss is just ~1% (in theory),
Neodymium magnets are distinguished by highly resistant to demagnetization caused by external magnetic fields,
Thanks to the shiny finish, the surface of Ni-Cu-Ni, gold-plated, or silver gives an elegant appearance,
The surface of neodymium magnets generates a powerful magnetic field – this is a distinguishing feature,
Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for operation at temperatures approaching 230°C and above...
Thanks to versatility in shaping and the ability to modify to client solutions,
Versatile presence in future technologies – they find application in magnetic memories, motor assemblies, precision medical tools, also technologically advanced constructions.
Thanks to their power density, small magnets offer high operating force, with minimal size,

Cons

Disadvantages of neodymium magnets:

Brittleness is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a strong case, which not only protects them against impacts but also raises their durability
When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
We recommend cover - magnetic mechanism, due to difficulties in producing threads inside the magnet and complex forms.
Potential hazard to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child health protection. Furthermore, small elements of these devices can be problematic in diagnostics medical after entering the body.
Due to expensive raw materials, their price exceeds standard values,

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what it depends on?

The lifting capacity listed is a theoretical maximum value performed under standard conditions:

using a base made of mild steel, functioning as a circuit closing element
whose transverse dimension is min. 10 mm
with an ideally smooth touching surface
under conditions of gap-free contact (surface-to-surface)
during pulling in a direction perpendicular to the mounting surface
at room temperature

Magnet lifting force in use – key factors

In practice, the actual holding force results from a number of factors, listed from most significant:

Gap (betwixt the magnet and the plate), because even a very small distance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to paint, corrosion or dirt).
Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
Steel grade – the best choice is high-permeability steel. Cast iron may generate lower lifting capacity.
Smoothness – ideal contact is possible only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
Temperature influence – hot environment reduces magnetic field. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was measured with the use of a steel plate with a smooth surface of suitable thickness (min. 20 mm), under vertically applied force, however under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Additionally, even a small distance between the magnet and the plate lowers the lifting capacity.

Warnings

Keep away from children

NdFeB magnets are not suitable for play. Swallowing multiple magnets can lead to them pinching intestinal walls, which constitutes a critical condition and necessitates immediate surgery.

Warning for allergy sufferers

Warning for allergy sufferers: The nickel-copper-nickel coating consists of nickel. If an allergic reaction appears, immediately stop handling magnets and use protective gear.

GPS Danger

An intense magnetic field disrupts the operation of magnetometers in smartphones and navigation systems. Keep magnets near a smartphone to avoid damaging the sensors.

Magnetic media

Intense magnetic fields can destroy records on payment cards, hard drives, and storage devices. Maintain a gap of min. 10 cm.

Dust is flammable

Powder created during machining of magnets is combustible. Do not drill into magnets unless you are an expert.

Fragile material

NdFeB magnets are ceramic materials, which means they are fragile like glass. Impact of two magnets will cause them shattering into small pieces.

Heat sensitivity

Standard neodymium magnets (grade N) lose magnetization when the temperature goes above 80°C. This process is irreversible.

Crushing force

Big blocks can crush fingers instantly. Never place your hand between two attracting surfaces.

Health Danger

People with a ICD should maintain an large gap from magnets. The magnetism can interfere with the operation of the life-saving device.

Powerful field

Be careful. Rare earth magnets act from a distance and connect with massive power, often faster than you can react.

Safety First! More info about risks in the article: Magnet Safety Guide.

MPL 3x3x3 / N38 - lamellar magnet

Product card - MPL 3x3x3 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the product - technical parameters

Table 1: Static pull force (pull vs gap) - interaction chart MPL 3x3x3 / N38

Table 2: Slippage capacity (wall) MPL 3x3x3 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MPL 3x3x3 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MPL 3x3x3 / N38

Table 5: Thermal stability (material behavior) - resistance threshold MPL 3x3x3 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision MPL 3x3x3 / N38

Table 7: Protective zones (electronics) - precautionary measures MPL 3x3x3 / N38

Table 8: Dynamics (cracking risk) - warning MPL 3x3x3 / N38

Table 9: Corrosion resistance MPL 3x3x3 / N38

Table 10: Electrical data (Pc) MPL 3x3x3 / N38

Table 11: Physics of underwater searching MPL 3x3x3 / N38

1. Wall mount (shear)

2. Steel saturation

3. Power loss vs temp

4. Demagnetization curve and operating point (B-H)

Chemical composition

Sustainability

Pulling force

Magnetic Induction

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Strengths and weaknesses of Nd2Fe14B magnets.

Pros

Cons

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what it depends on?

Magnet lifting force in use – key factors

Warnings

Keep away from children

Warning for allergy sufferers

GPS Danger

Magnetic media

Dust is flammable

Fragile material

Heat sensitivity

Crushing force

Health Danger

Powerful field

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - interaction chart
MPL 3x3x3 / N38

Table 2: Slippage capacity (wall)
MPL 3x3x3 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 3x3x3 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 3x3x3 / N38

Table 5: Thermal stability (material behavior) - resistance threshold
MPL 3x3x3 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision
MPL 3x3x3 / N38

Table 7: Protective zones (electronics) - precautionary measures
MPL 3x3x3 / N38

Table 8: Dynamics (cracking risk) - warning
MPL 3x3x3 / N38

Table 9: Corrosion resistance
MPL 3x3x3 / N38

Table 10: Electrical data (P_c)
MPL 3x3x3 / N38

Table 11: Physics of underwater searching
MPL 3x3x3 / N38

Strengths and weaknesses of Nd₂Fe₁₄B magnets.