Product Overview
The STE series offers high-performance metal foil current sensing resistors designed for accurate current measurement. These resistors are suitable for various applications requiring precise current monitoring and control.
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 | Size (L x W x T) | Resistance Value (m) | Power Rating (Watt) | Resistance Tolerance (%) | TCR (ppm) |
| STE0603*W50-series | 1.700.20 x 0.900.20 x 0.650.20 | 5~60 | 0.50 | 0.5%(D) / 1%(F) | 50 / 100 |
| STE0805*W75-series | 2.100.20 x 1.350.20 x 0.650.20 | 3~200 | 0.75 | 0.5%(D) / 1%(F) | 50 / 100 |
| STE1206*1W0-series | 3.300.20 x 1.700.20 x 0.650.20 | 3~400 | 1.0 | 0.5%(D) / 1%(F) | 50 / 100 |
| STE2010*1W5-series | 5.100.20 x 2.600.20 x 0.650.20 | 2~400 | 1.5 | 0.5%(D) / 1%(F) | 50 / 100 |
| STE2512*2W0-series | 6.400.30 x 3.200.30 x 0.650.20 | 2~400 | 2.0 | 0.5%(D) / 1%(F) | 50 / 100 |
| STE3921*3W0-series | 11.100.30 x 5.100.30 x 0.650.20 | 2~100 | 3.0 | 0.5%(D) / 1%(F) | 50 / 100 |
| STE4527*4W0-series | 11.601.0 x 7.101.0 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 |
Product Dimensions (Example: STE0805)
| Part Number | W (mm) | L (mm) | T (mm) | A (mm) |
| STE0805MW75-series R003 | 1.350.20 | 2.100.20 | 0.650.20 | 0.650.20 |
| STE0805MW75-series R004*S~R007*S | 1.350.20 | 2.100.20 | 0.650.20 | 0.500.20 |
| STE0805MW75-series R008~R049 | 1.350.20 | 2.100.20 | 0.650.20 | 0.500.20 |
| STE0805*W75-series R050~R200 | 1.350.20 | 2.100.20 | 0.650.20 | 0.500.20 |
Product Dimensions (Example: STE1206)
| Part Number | W (mm) | L (mm) | T (mm) | A (mm) |
| STE1206M1W0-series R003 | 1.700.20 | 3.300.20 | 0.650.20 | 1.200.30 |
| STE1206M1W0-series R004*S~R008*S | 1.700.20 | 3.300.20 | 0.650.20 | 0.680.30 |
| STE1206M1W0-series R009~R049 | 1.700.20 | 3.300.20 | 0.650.20 | 0.680.30 |
| STE1206*1W0-series R050~R400 | 1.700.20 | 3.300.20 | 0.650.20 | 0.680.30 |
Product Dimensions (Example: STE2010)
| Part Number | W (mm) | L (mm) | T (mm) | A (mm) |
| STE2010M1W5-series R002~R003 | 2.600.20 | 5.100.20 | 0.650.20 | 2.100.30 |
| STE2010M1W5-series R004*S~R009*S | 2.600.20 | 5.100.20 | 0.650.20 | 0.700.30 |
| STE2010M1W5-series R010~R049 | 2.600.20 | 5.100.20 | 0.650.20 | 0.700.30 |
| STE2010*1W5-series R050~R400 | 2.600.20 | 5.100.20 | 0.650.20 | 0.700.30 |
Product Dimensions (Example: STE2512)
| Part Number | W (mm) | L (mm) | T (mm) | A (mm) |
| STE2512M2W0-series R002 | 3.200.30 | 6.400.30 | 0.650.20 | 2.800.30 |
| STE2512M2W0-series R003 | 3.200.30 | 6.400.30 | 0.650.20 | 2.600.30 |
| STE2512M2W0-series R004*S~R009*S | 3.200.30 | 6.400.30 | 0.650.20 | 1.050.30 |
| STE2512M2W0-series R010~R049 | 3.200.30 | 6.400.30 | 0.650.20 | 1.050.30 |
| STE2512*2W0-series R050~R400 | 3.200.30 | 6.400.30 | 0.650.20 | 1.050.30 |
Product Dimensions (Example: STE3921)
| Part Number | W (mm) | L (mm) | T (mm) | A (mm) |
| STE3921M3W0-series R002 | 5.100.30 | 11.100.30 | 0.650.20 | 4.900.30 |
| STE3921M3W0-series R003 | 5.100.30 | 11.100.30 | 0.650.20 | 4.550.30 |
| STE3921M3W0-series R004*S~R008*S | 5.100.30 | 11.100.30 | 0.650.20 | 2.360.30 |
| STE3921M3W0-series R009~R049 | 5.100.30 | 11.100.30 | 0.650.20 | 2.360.30 |
| STE3921*3W0-series R050~R100 | 5.100.30 | 11.100.30 | 0.650.20 | 2.360.30 |
Product Dimensions (Example: STE4527)
| Part Number | W (mm) | L (mm) | T (mm) | A (mm) |
| STE4527M4W0-series R002 | 7.101.0 | 11.601.0 | 0.650.30 | 5.000.40 |
| STE4527M4W0-series R003*S~R005*S | 7.101.0 | 11.601.0 | 0.650.30 | 2.700.40 |
| STE4527M4W0-series R006~R049 | 7.101.0 | 11.601.0 | 0.650.30 | 2.700.40 |
| STE4527*4W0-series R050~R100 | 7.101.0 | 11.601.0 | 0.650.30 | 2.700.40 |
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 Standard
| 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 | (60, 95%RH) 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 30 days.
Recommended Solder Pad Size and Welding Conditions (Example: STE0603)
| Part Number Series | P (mm) | W (mm) | D (mm) | Loading (W) |
| 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 Solder Pad Size and Welding Conditions (Example: STE0805)
| Part Number Series | P (mm) | W (mm) | D (mm) | Loading (W) |
| STE0805MW75-series R003 | 0.50 | 1.44 | 1.55 | 0.75 |
| STE0805MW75-series R004*S~R007*S | 0.80 | 1.44 | 1.40 | 0.75 |
| STE0805*W75-series R008~R200 | 0.80 | 1.44 | 1.40 | 0.75 |
Recommended Solder Pad Size and Welding Conditions (Example: STE1206)
| Part Number Series | P (mm) | W (mm) | D (mm) | Loading (W) |
| STE1206M1W0-series R003 | 0.60 | 1.84 | 2.10 | 1.0 |
| STE1206M1W0-series R004*S~R008*S | 1.20 | 1.84 | 1.80 | 1.0 |
| STE1206*1W0-series R009~R400 | 1.20 | 1.84 | 1.80 | 1.0 |
Recommended Solder Pad Size and Welding Conditions (Example: STE2010)
| Part Number Series | P (mm) | W (mm) | D (mm) | Loading (W) |
| STE2010M1W5-series R002~R003 | 0.70 | 2.88 | 3.65 | 1.5 |
| STE2010M1W5-series R004*S~R009*S | 2.70 | 2.88 | 2.65 | 1.5 |
| STE2010*1W5-series R010~R400 | 2.70 | 2.88 | 2.65 | 1.5 |
Recommended Solder Pad Size and Welding Conditions (Example: STE2512)
| Part Number Series | P (mm) | W (mm) | D (mm) | Loading (W) |
| STE2512M2W0-series R002 | 0.60 | 3.57 | 4.35 | 2.0 |
| STE2512M2W0-series R003 | 0.90 | 3.57 | 4.20 | 2.0 |
| STE2512M2W0-series R004*S~R009*S | 3.10 | 3.57 | 3.10 | 2.0 |
| STE2512*2W0-series R010~R400 | 3.10 | 3.57 | 3.10 | 2.0 |
Recommended Solder Pad Size and Welding Conditions (Example: STE3921)
| Part Number Series | P (mm) | W (mm) | D (mm) | Loading (W) |
| STE3921M3W0-series R002 | 1.10 | 5.75 | 6.45 | 3.0 |
| STE3921M3W0-series R003 | 1.70 | 5.75 | 6.15 | 3.0 |
| STE3921M3W0-series R004*S~R008*S | 5.00 | 5.75 | 4.50 | 3.0 |
| STE3921*3W0-series R009~R100 | 5.00 | 5.75 | 4.50 | 3.0 |
Recommended Solder Pad Size and Welding Conditions (Example: STE4527)
| Part Number Series | P (mm) | W (mm) | D (mm) | Loading (W) |
| STE4527M4W0-series R002 | 1.20 | 8.05 | 6.65 | 4.0 |
| STE4527M4W0-series R003*S~R005*S | 5.20 | 8.05 | 4.65 | 4.0 |
| STE4527*4W0-series R006~R100 | 5.20 | 8.05 | 4.65 | 4.0 |
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.
