MSH 2512 Series Current Sensor Resistor
The MSH 2512 series are pure metal, short electrode, two-terminal, high-power current sensing resistors designed for precise current measurement. Utilizing an alloy resistive element and nickel/tin terminals, these resistors offer robust performance and reliability.
Product Attributes
- Brand: MSH
- Series: MSH2512
- Material: Alloy (Resistive element), Ni/Sn (Terminal electrode), Flame-retardant epoxy (Protective coating)
- Color: Black (Protective coating)
- Certifications: UL-94-V0 (Protective coating)
Technical Specifications
| Part Number | Series Number | Material | Power Rating | Nominal Resistance Value | Resistance Tolerance | Size (L x W x T) | Operating Temperature | Storage Conditions |
| MSH2512N2W0-series | MSH2512 | N (Alloy) | 2W (2.0 Watt) | R001~R010 (1m to 10m) | F=1%, G=2%, H=3%, J=5% | 6.400.20 x 3.200.20 x 1.200.2 mm | -55170 | 2 years at +1040, 75% RH (airtight); 30 days at +1060, 95% RH (non-condensing) |
| MSH2512N3W0-series | MSH2512 | N (Alloy) | 3W (3.0 Watt) | R001~R010 (1m to 10m) | F=1%, G=2%, H=3%, J=5% | 6.400.20 x 3.200.20 x 1.200.2 mm | -55170 | 2 years at +1040, 75% RH (airtight); 30 days at +1060, 95% RH (non-condensing) |
Electrical Characteristics
| Part Number | Resistance Value (m) | Power Rating (Watt) | Resistance Tolerance (%) | TCR (ppm) |
| MSH2512N2W0-series | 1~3 | 2 | 1%(F) | 100 |
| 4~10 | 2 | 75 | |
| MSH2512N3W0-series | 1~3 | 3 | 1%(F) | 100 |
| 4~10 | 3 | 75 | |
Solder Pad Size and Welding Conditions
| Part Number | P (mm) | W (mm) | D (mm) | t (m) | Loading (W) |
| MSH2512N2W0-series | 3.18 | 3.57 | 2.11 | 105 | 2.0W |
| MSH2512N3W0-series | 3.18 | 3.57 | 2.11 | 105 | 3.0W |
Recommended Customer Soldering Parameters
Wave Solder Temperature Condition:
- Preheating: 100~130, max.100 sec.
- Soldering: 250~265 max. 10 sec.
- Maximum allowed temperature: 2605, max. 10sec.
Solder Reflow Temperature Condition:
- Preheating: 145 15, max.120 sec.
- Soldering: min. 220, max. 60 sec.
- Maximum allowed temperature: 2605, max. 10sec.
Rework Temperature (hot air equipment): 350, 3~5 seconds
Recommended Reflow Methods: IR, vapor phase oven, hot air oven.
Lot Acceptance Test Requirements
| Test Item | Procedure | Acceptance Criteria |
| Visual | Visual inspection with a magnifying glass. | No outstanding stains, dirt, printing errors, or damage. |
| Dimensions | Measurement using appropriate, calibrated measuring instruments. | All dimensions within specified limits. |
| Resistance (Ro) | Measured using 4-wire technique at 25. | Resistance values within specified limits. |
| TCR | Resistance measured at 25 and 125 using 4-wire method, then calculated using the formula: TCR = (Rb-Ra)/Ra 1/(Tb-Ta) 10^6. | TCR values within specified limits. |
| Insulation Resistance (Ri) | Measured using a high ohm meter. | Insulation resistance between protective layer and resistive body > 100M. |
Packaging Information
| Type Number | Quantity (pcs) | Weight (g) | Reel Diameter A5 (mm) | Number of Holes N2 (mm) | Tape Width W11 (mm) |
| MSH2512N2W0-series | 1,500 | 26525 | 178 | 60 | 13 |
| MSH2512N3W0-series | 1,500 | 26525 | 178 | 60 | 13 |
Peeling Strength of Seal Tape: 0.1 1.0N (10 - 100gf)
Other
Any deviations from this specification require mutual agreement between parties. Modifications to this specification will be made by WALTER ELECTRONIC CO., LTD. upon mutual agreement.
2409271832_Walter-Elec-MSH2512N2W0R003F_C475777.pdf
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Current Sensor Resistor Walter Elec MSH2512N2W0R003F 2 Watt Alloy Resistive Element Flame Retardant Images
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