Product Overview
The STE series of metal foil current sensing resistors are designed for accurate current measurement. These components offer high precision and reliability, making them suitable for various industrial and electronic applications where precise current monitoring is critical.
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) |
|---|---|---|---|---|---|
| STE0603*W50-series | 0.900.20 x 1.700.20 x 0.650.20 | 5~60 | 0.50 | 0.5%(D) / 1%(F) | 50 |
| STE0805*W75-series | 1.350.20 x 2.100.20 x 0.650.20 | 3~200 | 0.75 | 0.5%(D) / 1%(F) | 50 |
| STE1206*1W0-series | 1.700.20 x 3.300.20 x 0.650.20 | 3~400 | 1.0 | 0.5%(D) / 1%(F) | 50 |
| STE2010*1W5-series | 2.600.20 x 5.100.20 x 0.650.20 | 2~400 | 1.5 | 0.5%(D) / 1%(F) | 50 |
| STE2512*2W0-series | 3.200.30 x 6.400.30 x 0.650.20 | 2~400 | 2.0 | 0.5%(D) / 1%(F) | 50 |
| STE3921*3W0-series | 5.100.30 x 11.100.30 x 0.650.20 | 2~100 | 3.0 | 0.5%(D) / 1%(F) | 50 |
| STE4527*4W0-series | 7.101.0 x 11.601.0 x 0.650.30 | 2~100 | 4.0 | 0.5%(D) / 1%(F) | 50 |
Product Characteristics and Reliability Test Standard
| 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 Size and Welding Conditions
| Part Number Series | P (mm) | W (mm) | D (mm) | Loading (Watt) |
|---|---|---|---|---|
| STE0603MW50-series | 0.50~0.60 | 0.92 | 1.35~1.30 | 0.50w |
| STE0805MW75-series | 0.50~0.80 | 1.44 | 1.55~1.40 | 0.75w |
| STE1206M1W0-series | 0.60~1.20 | 1.84 | 2.10~1.80 | 1.0w |
| STE2010M1W5-series | 0.70~2.70 | 2.88 | 3.65~2.65 | 1.5w |
| STE2512M2W0-series | 0.60~3.10 | 3.57 | 4.35~3.10 | 2.0w |
| STE3921M3W0-series | 1.10~5.00 | 5.75 | 6.45~4.50 | 3.0w |
| STE4527M4W0-series | 1.20~5.20 | 8.05 | 6.65~4.65 | 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-STE1206M1W0R008FS_C201274.pdf
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