Product Overview
The STE series offers high-performance metal foil current sensing resistors designed for accurate current measurement. These components are suitable for various applications requiring precise current detection and control.
Product Attributes
- Brand: STE Series
- Material: Metal Foil (MnCu alloy, Alloy, Special)
- Substrate: Alumina Ceramic
- Protective Coating: Flame-retardant epoxy (UL-94-V0, Green)
- Marking Coating: Flame-retardant epoxy (UL-94-V0, Black)
Technical Specifications
| Series | Part Number Range | Resistance Value (m) | Power Rating (Watt) | Resistance Tolerance (%) | TCR (ppm) | Dimensions (W x L x T, mm) |
| STE0603 | STE0603MW50-series R005~R060 | 5~60 | 0.50 | 0.5%(D) / 1%(F) | 50 | 0.900.20 x 1.700.20 x 0.650.20 |
| STE0805 | STE0805MW75-series R003~R200 | 3~200 | 0.75 | 0.5%(D) / 1%(F) | 50 | 1.350.20 x 2.100.20 x 0.650.20 |
| STE1206 | STE1206M1W0-series R003~R400 | 3~400 | 1.0 | 0.5%(D) / 1%(F) | 50 | 1.700.20 x 3.300.20 x 0.650.20 |
| STE2010 | STE2010M1W5-series R002~R400 | 2~400 | 1.5 | 0.5%(D) / 1%(F) | 50 | 2.600.20 x 5.100.20 x 0.650.20 |
| STE2512 | STE2512M2W0-series R002~R400 | 2~400 | 2.0 | 0.5%(D) / 1%(F) | 50 | 3.200.30 x 6.400.30 x 0.650.20 |
| STE3921 | STE3921M3W0-series R002~R100 | 2~100 | 3.0 | 0.5%(D) / 1%(F) | 50 | 5.100.30 x 11.100.30 x 0.650.20 |
| STE4527 | STE4527M4W0-series R002~R100 | 2~100 | 4.0 | 0.5%(D) / 1%(F) | 50 | 7.101.0 x 11.601.0 x 0.650.30 |
Reliability Test Standards
| Parameter | Conditions | Requirements | 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 | 6095RH 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: Under airtight in temperature+1040, relative humidity 75% can store 2 years. Without dew in temperature+1060, relative humidity be 95% maximum value for 30 days.
Recommended Solder Pad Dimensions and Welding Conditions
| Part Number | P (mm) | W (mm) | D (mm) | Loading (Watt) |
| STE0603MW50-series R005 | 0.50 | 0.92 | 1.35 | 0.50w |
| STE0603MW50-series R006*S~R009*S | 0.60 | 0.92 | 1.30 | 0.50w |
| STE0603*W50-series R010~R60 | 0.60 | 0.92 | 1.30 | 0.50w |
| STE0805MW75-series R003 | 0.50 | 1.44 | 1.55 | 0.75w |
| STE0805MW75-series R004*S~R007*S | 0.80 | 1.44 | 1.40 | 0.75w |
| STE0805*W75-series R008~R200 | 0.80 | 1.44 | 1.40 | 0.75w |
| STE1206M1W0-series R003 | 0.60 | 1.84 | 2.10 | 1.0w |
| STE1206M1W0-series R004*S~R008*S | 1.20 | 1.84 | 1.80 | 1.0w |
| STE1206*1W0-series R009~R400 | 1.20 | 1.84 | 1.80 | 1.0w |
| STE2010M1W5-series R002~R003 | 0.70 | 2.88 | 3.65 | 1.5w |
| STE2010M1W5-series R004*S~R009*S | 2.70 | 2.88 | 2.65 | 1.5w |
| STE2010*1W5-series R010~R400 | 2.70 | 2.88 | 2.65 | 1.5w |
| STE2512M2W0-series R002 | 0.60 | 3.57 | 4.35 | 2.0w |
| STE2512M2W0-series R003 | 0.90 | 3.57 | 4.20 | 2.0w |
| STE2512M2W0-series R004*S~R009*S | 3.10 | 3.57 | 3.10 | 2.0w |
| STE2512*2W0-series R010~R400 | 3.10 | 3.57 | 3.10 | 2.0w |
| STE3921M3W0-series R002 | 1.10 | 5.75 | 6.45 | 3.0w |
| STE3921M3W0-series R003 | 1.70 | 5.75 | 6.15 | 3.0w |
| STE3921M3W0-series R004*S~R008*S | 5.00 | 5.75 | 4.50 | 3.0w |
| STE3921*3W0-series R009~R100 | 5.00 | 5.75 | 4.50 | 3.0w |
| STE4527M4W0-series R002 | 1.20 | 8.05 | 6.65 | 4.0w |
| STE4527M4W0-series R003*S~R005*S | 5.20 | 8.05 | 4.65 | 4.0w |
| STE4527*4W0-series R006~R100 | 5.20 | 8.05 | 4.65 | 4.0w |
Recommended 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-STE0603MW50R015F_C156371.pdf
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