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Specifications
Power(Watts):
3W
Resistance:
4mΩ
Type:
Current Sense Resistor
Temperature Coefficient:
±50ppm/℃
Tolerance:
±5%
Mfr. Part #:
MA251230JR004MZ
Package:
2512
Key Attributes
Model Number:
MA251230JR004MZ
Product Description
MA Series Metal Alloy Low-Resistance Chip Resistors
Product Overview
The MA Series Metal Alloy Low-Resistance Chip Resistors are designed for high-precision current sensing and voltage division applications. Featuring low resistance and low TCR (Temperature Coefficient of Resistance), these resistors offer excellent long-term stability and are RoHS compliant and halogen-free. They are suitable for demanding applications across various industries, including entertainment products, power supplies, measuring instruments, industrial products, and battery management systems. ACE-Q200 qualified versions are available for automotive electronics.
Product Attributes
- Brand: MA Series
- Material: Metal Alloy (MnCuSn, MnCu, FeCrAl)
- Compliance: RoHS compliant, Halogen free, Lead free
- Qualification: ACE-Q200 qualified available for Automotive Electronics
Technical Specifications
| Type | Size (Inch) | Rated Power at 70 | Resistance Range (m) | Material | T.C.R. (ppm/) | Max. Rating Current (A) | Max. Overload Current (A) | Operating Temperature Range () | Tolerance | Dimensions (L x W x H mm) |
|---|---|---|---|---|---|---|---|---|---|---|
| MA1206 | 1206 | 0.75W | 51~100 | FeCrAl | 50 | 3.83 | 7.66 | -55 ~ +170 | 2.0% (G), 5.0% (J) | 3.2000.254 x 1.6500.254 x 0.3500.254 |
| MA1206 | 1206 | 1W | 7~50 | MnCuSn, MnCu, FeCrAl | 50 | 31.62 | 63.25 | -55 ~ +170 | 0.5% (D), 1.0% (F), 2.0% (G), 5.0% (J) | 3.2000.254 x 1.6500.254 x 0.4300.254 (3~50m) |
| MA2512 | 2512 | 1W | 7~450 | MnCuSn, MnCu, FeCrAl | 50 | 44.72 | 100.00 | -55 ~ +170 | 0.5% (D), 1.0% (F), 2.0% (G), 5.0% (J) | 6.3500.254 x 3.0500.254 x 0.6500.254 (0.5~450m) |
| MA2512 | 2512 | 2W | 7~450 | MnCuSn, MnCu, FeCrAl | 50 | 63.25 | 141.42 | -55 ~ +170 | 0.5% (D), 1.0% (F), 2.0% (G), 5.0% (J) | 6.3500.254 x 3.0500.254 x 0.6500.254 (0.5~450m) |
| MA2512 | 2512 | 3W | 7~100 | MnCuSn, MnCu, FeCrAl | 50 | 77.46 | 154.91 | -55 ~ +170 | 0.5% (D), 1.0% (F), 2.0% (G), 5.0% (J) | 6.3500.254 x 3.0500.254 x 0.6500.254 (0.5~100m) |
| MA2725 | 2725 | 4W | 0.25~3 | MnCuSn, MnCu, FeCrAl | 50 | 126.49 | 252.98 | -55 ~ +170 | 0.5% (D), 1.0% (F), 2.0% (G), 5.0% (J) | 6.8000.254 x 6.3500.254 x 0.7700.254 (0.25~3m) |
| MA2728 | 2728 | 4W | 4~450 | FeCrAl | 50 | 31.62 | 54.77 | -55 ~ +170 | 0.5% (D), 1.0% (F), 2.0% (G), 5.0% (J) | 6.6000.254 x 6.7000.254 x 0.6200.254 (4~450m) |
| MA4527 | 4527 | 2W | 7~100 | MnCuSn, MnCu, FeCrAl | 50 | 63.25 | 109.54 | -55 ~ +170 | 0.5% (D), 1.0% (F), 2.0% (G), 5.0% (J) | 11.3000.500 x 6.6000.500 x 0.7700.254 (0.5~100m) |
| MA4527 | 4527 | 3W | 7~60 | MnCuSn, MnCu, FeCrAl | 50 | 77.46 | 134.16 | -55 ~ +170 | 0.5% (D), 1.0% (F), 2.0% (G), 5.0% (J) | 11.3000.500 x 6.6000.500 x 0.7700.254 (0.5~60m) |
| MA4527 | 4527 | 5W | 7~500 | MnCuSn, MnCu, FeCrAl | 50 | 100 | 173.20 | -55 ~ +170 | 0.5% (D), 1.0% (F), 2.0% (G), 5.0% (J) | 11.3000.500 x 6.6000.500 x 0.7700.254 (0.5~500m) |
| MA1206 Jumper | 1206 | 1W | 0.2 | Cu | N/A | 70.7 | N/A | -55~+170C | N/A | 3.2000.254 x 1.6500.254 x 0.6700.254 |
| MA2512 Jumper | 2512 | 2W | 0.2 | Cu | N/A | 100 | N/A | -55~+170C | N/A | 6.3500.254 x 3.0500.254 x 0.6700.254 |
Performance Characteristics
- Power Derating: Power rating must be derated in accordance with the derating curve for ambient temperatures above 70C.
- Rating Current: Determined by the equation I = sqrt(P/R).
- Marking Format: 4 digits, 'R' for decimal point in ohms, 'm' for decimal point in milliohms, '0R' for 0.
Reliability Test Requirements
| Test Item | Test Method | Requirements |
|---|---|---|
| Temperature Coefficient of Resistance (T.C.R) | JIS C 5201-1 clause 4.8 | Refer to Standard Electrical Specifications |
| Short Time Overload | JIS C 5201-1 clause 4.13 | R/R10.5% (MA4527: R/R12.0%) |
| High Temperature Exposure | JIS C 5201-1 clause 4.23.2 | R/R11.0% (MA4527: R/R12.0%) |
| Soldering Heat | JIS C 5201-1 clause 4.18 | R/R1 0.5% |
| Temperature Cycling | JIS C 5201-1 clause 4.19 | R/R1 0.5% |
| Bias Humidity | JIS C 5201-1 clause 4.24 | R/R1 0.5% |
| Load at Rated Power | JIS C 5201-1 clause 4.25 | R/R11.0% (MA4527: R/R12.0%) |
| Solderability | JIS C 5201-1 clause 4.17 | >95% coverage |
| Dielectric Withstanding Voltage | JIS-C5201-1 clause 4.7 | No short or burned on the appearance. |
| Core Body Strength | JIS-C5201-1 clause 4.15 | No broken |
| Terminal Strength | JIS-C5201-1 clause 4.32 | No broken |
| Terminal Bending Strength | JIS-C5201-1 clause 4.33 | R/R1 0.5%, No broken |
| Moisture Resistance (Climatic Sequence) | MIL-STD 202 Method 106 | R/R1 0.5% |
Jumper Specifications
| Test Item | Test Method | Requirements |
|---|---|---|
| Short Time Overload | JIS C 5201-1 clause 4.13 | 0.2m |
| Temperature Cycling | JIS C 5201-1 clause 4.19 | 0.2m |
| High Temperature Exposure | JIS C 5201-1 clause 4.23.2 | 0.2m |
| Bias Humidity | JIS C 5201-1 clause 4.24 | 0.2m |
| Load at Rated Power | JIS C 5201-1 clause 4.25 | 0.2m |
| Solderability | JIS C 5201-1 clause 4.17 | >95% coverage |
Soldering Profile
Peak Temperature: 250 10
Pre Heating Zone: 150 - 180
Soldering Zone Heating Time: 30 10 s
Cooling Time: 90 30 s
Recommended Land Pattern Design (Unit: mm)
| TYPE | Resistance Range | a | b | i |
|---|---|---|---|---|
| MA1206 | 1m~100m | 1.60 | 2.18 | 0.66 |
| MA2512 | 0.5m~1.5m | 3.05 | 3.68 | 1.27 |
| MA2512 | 2m~3.5m | 2.11 | 3.68 | 3.18 |
| MA2512 | 3.6m~450m | 1.90 | 3.68 | 3.50 |
| MA2725 | 0.25m~0.5m | 3.18 | 6.86 | 1.32 |
| MA2725 | 1m~3m | 2.34 | 6.86 | 3.00 |
| MA2728 | 4m~450m | 2.75 | 7.82 | 3.51 |
| MA4527 | 0.5m~3m | 4.50 | 8.74 | 4.50 |
| MA4527 | 3.5m~100m | 3.40 | 8.74 | 6.43 |
| MA4527 | 101m~500m | 2.93 | 8.74 | 7.63 |
Packing Quantity
| TYPE | PCS /Reel |
|---|---|
| MA1206 | 5000 |
| MA2512 | 4000 |
| MA2725 | 2000 |
| MA2728 | 2000 |
| MA4527 | 1000 |
Plating Thickness
- Ni: 2m
- Sn (Tin): 3m
Storage Temperature
- Temperature: 255
- Humidity: 6020%
2410121326_EVER-OHMS-MA251230JR004MZ_C252683.pdf
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