ASHP-2512 SERIES
✔️ Application Scenario
ASHP-2512 alloy shunts are designed for BMS, EV chargers, and industrial power supplies, delivering stable current sensing from -55℃ to 170℃.
✔️ R&D Technology
Featuring Karma alloy and electron-beam welding, ASHP-2512 achieves ultra-low TCR down to ±20ppm/℃, ensuring high precision over a wide temperature range.
✔️ Production Strength
Fully automated production lines and 100% electrical testing ensure consistent quality, supporting annual output exceeding 300 million pieces.
✔️ Stock Availability
ASHP-2512 3mΩ standard values are in stock now, available in 3000pcs per reel for fast global delivery.
✔️ Cooperation Case
A leading Chinese EV battery manufacturer adopted ASHP-2512 for current sampling, achieving ±0.5% accuracy and zero failures after 2000 thermal cycles.
APPROVAL SHEET
ASHP-2512 SERIES
Alloy Shunt
Version | Date | Description of amendment | Draft | Checked |
A1.0 | 2025.12.8 | 首版发行 | 邵凤临 | 邓小辉 |
1.Product Description
Product name:ASHP-2512 series
Description:ASHP-2512 series Alloy Shunt provide precise current sensing with low TCR and high power, ideal for automotive and industrial applications.
1.1 Part Number Explanation
The part number of the high power precision resistor is identified by the type name, Resistance Alloy, tolerance,TCR,Dimension and resistance value.
Example: ASHP-K-3-3F-P
Type | Resistance Alloy | Dimension | Resistance Value | Tolerance | TCR |
ASHP | K=Karma | 3=2512 Unit：in | 3 Unit：mΩ |
D=±0.5% F=±1% G=±2% J=±5%
| L=±10 P=±20 Q=±30 Unit：ppm/℃
|
(1) Type name: ASHP series
(2) Resistance Alloy:K=Karma
(3) Dimension:3=2512
(4) Resistance:3
(5) Tolerance：D=±0.5%;F=±1%;G=±2%;J=±5%
(6) TCR:L=±10;P=±20;Q=±30
1.2 Products Dimension
Type | Size (in) | W | A | C | B | H |
ASHP-K | 2512 | 6.3±0.2 | 1.2±0.2 | 3.1±0.3 | 3.9±0.2 | 0.3-0/+0.3 |
1.3 PCB-layout (Reflow-soldering)
Solder pad type | w | c | a | b |
ASHP-K-2512 | 7 | 3.8 | 1.8 | 3.4 |
2. Technical Data
Size | Resistance Alloy | Resistance Range(mΩ) | Resistance Value(mΩ) | D±0.15 （mm） | *TCR | P70 °C |
2512 | K | 3 | 3 | 0.8 | ±20 | 5 |
TCR（ppm/℃）：Test was conducted with the temperature from -55℃ to 170℃ , while 20℃ worked as reference.
3. Endurance Test
Iterms | Additional Requirements | Reference | Limits |
High Temperature Exposure | 1000 hrs. (T=170°C) , unpowered. Measurement at 24±4 hoursafter test conclusion . | MIL-STD-202 Method 108 | ±0.5% |
Temperature Cycling | 1000 Cycles(-55°C to +150°C) , unpowered. Minimum dwell time 15min. at each temperature extreme.maximum transition time1 min. . Measurement atleast 24hoursafter test conclusion . | JESD22-A-104 | ±0.5% |
HumidityBias | 1000hrs. (85℃/85%RH) . Note: Specify conditions: 10% of operating power.Measurement at 24±4 hoursafter test conclusion . | MIL-STD-202 Method 103 | ±0.5% |
High Temperature Operating Life | 1000 hrs.(T=125°C). Rate power was applied to the products intermittently: 90 minutes ON and 30 minutes OFF . Measurement at 24±4 hoursafter test conclusion . | MIL-STD-202 Method 108 | ±0.5% |
Resistance to Soldering Heat | 250℃±5℃ , 30s±5s | MIL-STD-202 Method 210 | ±0.5% |
Solderability | Weld bath temperature 245°C±5°C, duration5±0.5S . | J-STD-002 | 95% Coverage Minimum |
Vibration | 20 min.(5 g's) , test from10Hz-2000 Hz, 12 cycles each of 3 orientations . | MIL-STD-202 Method 204 | ±0.5% |
Board Flex Test | Apply an external force once to the circuit board, bend at least Dx = 2mm, duration 60+5 S . | AEC-Q200-005 | ±0.5% |
Terminal Strength (SMD) | Apply an external force once to the side of the test device, the force is 17.7N (1.8kg), duration 60+1S . | AEC-Q200-006 | ±0.5% |
Mechanical Shock | 1) Pulse waveform: Half-Sine pulse; 2) Accelerate peak: 100g's; 3) Pulse duration: 6ms; 4) Orientation & Shock time: ±X, ±Y, ±Z, 3 times each orientation, total 18 times . | MIL-STD-202H Method 213 | ±0.5% |
ESD | 1) Direct Contact (DC): ±6kV ; 2) Air Discharge (AD): ±12kV, ±16kV, ±25kV . | AEC-Q200-002 REV-B | ±0.5% |
Flame Retardance | 1) Test power: 100%, 115%, 130%, 150% (Rate current) . 2) Test duration: 1h . | AEC-Q200-001 | The following constitutes a failure: 1)A flame over 3.0 seconds duration; 2)An explosion: 3) A temperature above 350'c sustained for over 10 seconds. |
4.Power Derating Curve
5.Marking
Mark | Explanation |
R003 1% | R003：3mΩ (Value阻值) 1%：±1% (Tolerance精度) |
6.Packing
Unit/mm
Size | A±0.15 | B±0.15 | W±0.3 | E±0.1 | F±0.1 | P0±0.1 | P1±0.1 | P2±0.1 | D0±0.1 | T±0.2 | Quantity (pcs) |
2512 | 3.5 | 6.7 | 12 | 1.75 | 5.5 | 2 | 4 | 4 | 1.50 | 取决于产品D尺寸的高度。 | 3000 |
Size | 2512 |
φA | 178 |
φB | 60 |
φC | 13 |
W | 12.5 |
T | 21 |
This document is a product specification. Contents are subject to change without notice.
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