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Specifications
Power(Watts):
2W
Resistance:
68mΩ
Type:
Current Sense Resistor
Tolerance:
±1%
Temperature Coefficient:
±50ppm/℃
Mfr. Part #:
STE2512A2W0R068F
Package:
2512
Key Attributes
Model Number:
STE2512A2W0R068F
Product Description
STE Series Current Sensing Resistor
The STE series Metal Foil Current Sensing Resistors are designed for accurate current measurement. They offer a robust solution for applications requiring precise current monitoring and control, with various sizes and resistance values to suit diverse needs. These resistors are constructed with high-quality materials for reliability and performance.
Product Attributes
- Brand: STE Series
- Material: Metal Foil (MnCu alloy, Alloy, Special)
- Substrate: Alumina Ceramic
- Protective Coating: Flame-retardant epoxy, meets UL-94-V0 requirements (Green)
- Marking Coating: Flame-retardant epoxy, meets UL-94-V0 requirements (Black)
Technical Specifications
| Part Number Series | Dimensions (W x L x T) (mm) | Resistance Value (m) | Power Rating (Watt) | Resistance Tolerance (%) | TCR (ppm/C) |
|---|---|---|---|---|---|
| STE0603*W50-series | 0.900.20 x 1.700.20 x 0.650.20 | 5~60 | 0.50 | 0.5% (D), 1% (F) | 50, 100 |
| STE0805*W75-series | 1.350.20 x 2.100.20 x 0.650.20 | 3~200 | 0.75 | 0.5% (D), 1% (F) | 50, 100 |
| STE1206*1W0-series | 1.700.20 x 3.300.20 x 0.650.20 | 3~400 | 1.0 | 0.5% (D), 1% (F) | 50, 100 |
| STE2010*1W5-series | 2.600.20 x 5.100.20 x 0.650.20 | 2~400 | 1.5 | 0.5% (D), 1% (F) | 50, 100 |
| STE2512*2W0-series | 3.200.30 x 6.400.30 x 0.650.20 | 2~400 | 2.0 | 0.5% (D), 1% (F) | 50, 100 |
| STE3921*3W0-series | 5.100.30 x 11.100.30 x 0.650.20 | 2~100 | 3.0 | 0.5% (D), 1% (F) | 50, 100 |
| STE4527*4W0-series | 7.101.0 x 11.601.0 x 0.650.30 | 2~100 | 4.0 | 0.5% (D), 1% (F) | 50, 100 |
Product Dimensions (Example: STE0603)
| Part Number | W (mm) | L (mm) | T (mm) | A (mm) |
|---|---|---|---|---|
| STE0603MW50-series R005 | 0.900.20 | 1.700.20 | 0.650.20 | 0.500.20 |
| STE0603MW50-series R006*S~R009*S | 0.900.20 | 1.700.20 | 0.650.20 | 0.400.20 |
| STE0603MW50-series R010~R049 | 0.900.20 | 1.700.20 | 0.650.20 | 0.400.20 |
| STE0603*W50-series R050~R060 | 0.900.20 | 1.700.20 | 0.650.20 | 0.400.20 |
Reliability Test Standards
| Test Parameter | Conditions | Acceptance Standard | IEC Standard |
|---|---|---|---|
| Short Time Over Load | P = 2.5Pr ; T = 252C , t = 5sec. | (1.0%+0.5m) | 60115-1 4.13 |
| High Temp. Exposure | T = +1702C ; t = 1000h | (1.0%+0.5m) | 60115-1 4.25 |
| Low Temp. Storage | T = -552C ; t = 1000h | (1.0%+0.5m) | 60115-1 4.25 |
| Moisture Load Life | (60, 95%RH) Vtest = Vmax ; T=602C ; RH=95% ; t= 90min ON , 30min OFF , 1000h | (2.0%+0.5m) | 60115-1 4.25 |
| Thermal Shock | [-55C 30min. R.T. 3min. +155C 30min. R.T. 3min ], 100 Cycles | (1.0%+0.5m) | 60115-1 4.19 |
| Load Life at 70C | Vtest = Vmax ; T=702C ;t= 90min ON , 30min OFF,1000h | (2%+0.5m) | 60115-1 4.25 |
| Solderability | Dip into solder at T = 2455C , t = 30.5sec. | The covered area >95% | 60115-1 4.17 |
| Resistance to Solder Heat | Through Reflow T= 2755C , t =201sec. | (1.0%+0.5m) | 60115-1 4.18 |
| Mechanical Shock | a =100G , t =11ms, 5 times shock | (1.0%+0.5m) | 60115-1 4.21 |
| Substrate Bending | Span: 90mm ; Bend Width: 2mm ; Test board: Glass-Epoxy Board ; Thickness =1.6mm | (1.0%+0.5m) | 60115-1 4.33 |
Environmental Characteristics
- Operating Temperature: -55155
- Storage Conditions: 2 years under airtight conditions (+1040, 75% RH); Max. 30 days without dew (+1060, 95% RH).
Recommended Solder Pad Size and Welding Conditions (Example: STE0603)
| Part Number Series | P (mm) | W (mm) | D (mm) | Loading (Watt) |
|---|---|---|---|---|
| STE0603MW50-series R005 | 0.50 | 0.92 | 1.35 | 0.50 |
| STE0603MW50-series R006*S~R009*S | 0.60 | 0.92 | 1.30 | 0.50 |
| STE0603*W50-series R010~R60 | 0.60 | 0.92 | 1.30 | 0.50 |
Recommended Customer Soldering Parameters
- Wave Solder Temperature Profile: Preheating: 100~130, max. 100 sec. Soldering: 250~265 max. 10 sec. Maximum temperature: 2605, max. 10sec.
- Solder Reflow Temperature Profile: Preheating: 145 15, max. 120 sec. Soldering: min. 220, max. 60 sec. Maximum temperature: 2605, max. 10sec.
2410121318_Walter-Elec-STE2512A2W0R068F_C388453.pdf
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