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Specifications
Resistance:
300mΩ
Power(Watts):
2W
Type:
Current Sense Resistor
Tolerance:
±1%
Mfr. Part #:
STE2512S2W0R300F
Package:
2512
Key Attributes
Model Number:
STE2512S2W0R300F
Product Description
Product Overview
The STE series current sensing resistors are metal foil components designed for accurate current measurement. They offer various sizes, materials, and resistance values, making them suitable for a wide range of applications requiring precise current monitoring.
Product Attributes
- Brand: STE series
- Material: MnCu alloy, Alloy, Special
- Protective Coating Color: Green (UL-94-V0), Black (UL-94-V0)
- Certifications: UL-94-V0 (for protective coatings)
Technical Specifications
| Part Number Series | Resistance Value (m) | Power Rating (Watt) | Resistance Tolerance (%) | TCR (ppm) | Dimensions (W x L x T, mm) | Terminal Electrode (A, mm) |
| STE0603*W50-series | R005~R60 | 0.5 | 0.5% (D) / 1% (F) | 50 / 100 | 0.900.20 x 1.700.20 x 0.650.20 | 0.500.20 (R005), 0.400.20 (R006*S~R060) |
| STE0805*W75-series | R003~R200 | 0.75 | 0.5% (D) / 1% (F) | 50 / 100 | 1.350.20 x 2.100.20 x 0.650.20 | 0.650.20 (R003), 0.500.20 (R004*S~R200) |
| STE1206*1W0-series | R003~R400 | 1.0 | 0.5% (D) / 1% (F) | 50 / 100 | 1.700.20 x 3.300.20 x 0.650.20 | 1.200.30 (R003), 0.680.30 (R004*S~R400) |
| STE2010*1W5-series | R002~R400 | 1.5 | 0.5% (D) / 1% (F) | 50 / 100 | 2.600.20 x 5.100.20 x 0.650.20 | 2.100.30 (R002~R003), 0.700.30 (R004*S~R400) |
| STE2512*2W0-series | R002~R400 | 2.0 | 0.5% (D) / 1% (F) | 50 / 100 | 3.200.30 x 6.400.30 x 0.650.20 | 2.800.30 (R002), 2.600.30 (R003), 1.050.30 (R004*S~R400) |
| STE3921*3W0-series | R002~R100 | 3.0 | 0.5% (D) / 1% (F) | 50 / 100 | 5.100.30 x 11.100.30 x 0.650.20 | 4.900.30 (R002), 4.550.30 (R003), 2.360.30 (R004*S~R100) |
| STE4527*4W0-series | R002~R100 | 4.0 | 0.5% (D) / 1% (F) | 50 / 100 | 7.101.0 x 11.601.0 x 0.650.30 | 5.000.40 (R002), 2.700.40 (R003*S~R100) |
Product Structure & Material
| Component | Material |
| Substrate | Alumina Ceramic |
| Adhesion layer | Epoxy |
| Resistive element | Cu alloy |
| Terminal electrode | SnNiCu |
| Protective coating | Flame-retardant epoxy, meets UL- 94-V0 requirements (green) |
| Marking coating | Flame-retardant epoxy, meets UL- 94-V0 requirements (black) |
Reliability Test Standards
| Test Method | Conditions | Requirements |
| Short Time Over Load | P= 2.5Pr ; T=252C , t = 5sec. | (1.0%+0.5m) |
| High Temp. Exposure | T = +1702C ; t = 1000h | (1.0%+0.5m) |
| Low Temp. Storage | T = -552C ; t = 1000h | (1.0%+0.5m) |
| Moisture Load Life | 6095RH Vtest = Vmax ; T=602C ; RH=95% ; t= 90min ON , 30min OFF , 1000h | (2.0%+0.5m) |
| Thermal Shock | [-55C 30min. R.T. 3min. +155C 30min. R.T. 3min ], 100 Cycles | (1.0%+0.5m) |
| Load Life at 70C | Vtest = Vmax ; T=702C ;t= 90min ON , 30min OFF,1000h | (2%+0.5m) |
| Solderability | Dip into solder at T = 2455C , t = 30.5sec. | The covered area >95% |
| Resistance to Solder Heat | Through Reflow T= 2755C , t =201sec. | (1.0%+0.5m) |
| Mechanical Shock | a =100G , t =11ms, 5 times shock | (1.0%+0.5m) |
| Substrate Bending | Span:90mm ; Bend Width:2mm ; Test board: Glass-Epoxy Board ; Thickness =1.6mm | (1.0%+0.5m) |
Environmental Characteristics
Operating Temperature: -55155
Storage Conditions:
- Under airtight in temperature+1040, relative humidity 75% can store 2 years.
- Without dew in temperature+1060, relative humidity be 95% maximum value for 30days.
Recommended Solder Pad Size and Welding Conditions
| Part Number Series | P (mm) | W (mm) | D (mm) | Loading (Watt) |
| STE0603MW50-series | 0.50 | 0.92 | 1.35 | 0.50w |
| STE0603MW50-series | 0.60 | 0.92 | 1.30 | 0.50w |
| STE0805MW75-series | 0.50 | 1.44 | 1.55 | 0.75w |
| STE0805MW75-series | 0.80 | 1.44 | 1.40 | 0.75w |
| STE1206M1W0-series | 0.60 | 1.84 | 2.10 | 1.0w |
| STE1206M1W0-series | 1.20 | 1.84 | 1.80 | 1.0w |
| STE2010M1W5-series | 0.70 | 2.88 | 3.65 | 1.5w |
| STE2010M1W5-series | 2.70 | 2.88 | 2.65 | 1.5w |
| STE2512M2W0-series | 0.60 | 3.57 | 4.35 | 2.0w |
| STE2512M2W0-series | 0.90 | 3.57 | 4.20 | 2.0w |
| STE2512M2W0-series | 3.10 | 3.57 | 3.10 | 2.0w |
| STE3921M3W0-series | 1.10 | 5.75 | 6.45 | 3.0w |
| STE3921M3W0-series | 1.70 | 5.75 | 6.15 | 3.0w |
| STE3921M3W0-series | 5.00 | 5.75 | 4.50 | 3.0w |
| STE4527M4W0-series | 1.20 | 8.05 | 6.65 | 4.0w |
| STE4527M4W0-series | 5.20 | 8.05 | 4.65 | 4.0w |
Recommended Customer Soldering Parameters:
Wave Solder Temperature Condition:
- Preheating: 100~130, max.100 sec.
- Soldering: 250~265 max. 10 sec.
- Maximum temperature: 2605, max. 10sec.
Solder Reflow Temperature Condition:
- Preheating: 145 15, max.120 sec.
- Soldering: min. 220, max. 60 sec.
- Maximum temperature: 2605, max. 10sec.
2410121318_Walter-Elec-STE2512S2W0R300F_C201333.pdf
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