Current Sensing Resistor Walter Elec STE1206A1W0R120F with Metal Foil Material and Flame Retardant Epoxy UL 94 V0 Coating
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Product Description
STE Series Current Sensing Resistor
The STE series offers metal foil current sensing resistors designed for precise current measurement. These components are suitable for various applications requiring accurate current monitoring.
Product Attributes
- Brand: STE
- 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
| 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 / 0.400.20 |
| 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 / 0.500.20 |
| 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 / 0.680.30 |
| 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 / 0.700.30 |
| 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 / 2.600.30 / 1.050.30 |
| 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 / 4.550.30 / 2.360.30 |
| 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 / 2.700.40 |
Product Structure & Material
- Substrate: Alumina Ceramic
- Adhesion layer: Epoxy
- Resistive element: Copper alloy
- Terminal electrode: Tin, Nickel, Copper
- 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
| Parameter | Conditions | Requirements | IEC Standard |
|---|---|---|---|
| Short Time Over Load | P= 2.5Pr ; T=252C , t = 5sec. | (1.0%+0.5m) | IEC60115-1 4.13 |
| High Temp. Exposure | T = +1702C ; t = 1000h | (1.0%+0.5m) | IEC60115-1 4.25 |
| Low Temp. Storage | T = -552C ; t = 1000h | (1.0%+0.5m) | IEC60115-1 4.25 |
| Moisture Load Life | (6095RH) Vtest = Vmax ; T=602C ; RH=95% ; t= 90min ON , 30min OFF , 1000h | (2.0%+0.5m) | IEC60115-1 4.25 |
| Thermal Shock | [-55C 30min. R.T. 3min. +155C 30min. R.T. 3min ], 100 Cycles | (1.0%+0.5m) | IEC60115-1 4.19 |
| Load Life at 70C | Vtest = Vmax ; T=702C ;t= 90min ON , 30min OFF,1000h | (2%+0.5m) | IEC60115-1 4.25 |
| Solderability | Dip into solder at T = 2455C , t = 30.5sec. | The covered area >95% | IEC60115-1 4.17 |
| Resistance to Solder Heat | Through Reflow T= 2755C , t =201sec. | (1.0%+0.5m) | IEC60115-1 4.18 |
| Mechanical Shock | a =100G , t =11ms, 5 times shock | (1.0%+0.5m) | IEC60115-1 4.21 |
| Substrate Bending | Span: 90mm ; Bend Width: 2mm ; Test board: Glass-Epoxy Board ; Thickness =1.6mm | (1.0%+0.5m) | IEC60115-1 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
Recommended Solder Pad Dimensions (P x W x D, mm)
| Part Number Series | P | W | D | Loading |
|---|---|---|---|---|
| STE0603MW50-series | 0.50 | 0.92 | 1.35 | 0.50w |
| STE0603MW50-series | 0.60 | 0.92 | 1.30 | 0.50w |
| STE0603*W50-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 |
| STE0805*W75-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 |
| STE1206*1W0-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 |
| STE2010*1W5-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 |
| STE2512*2W0-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 |
| STE3921*3W0-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 |
| STE4527*4W0-series | 5.20 | 8.05 | 4.65 | 4.0w |
Recommended Soldering Parameters
- Wave Solder Temperature Curve: Preheating: 100~130, max. 100 sec. Soldering: 250~265 max. 10 sec. Maximum temperature: 2605, max. 10sec.
- Solder Reflow Temperature Curve: Preheating: 145 15, max. 120 sec. Soldering: min. 220, max. 60 sec. Maximum temperature: 2605, max. 10sec.
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Company
Beijing Silk Road Enterprise Management Services Co., Ltd.
Location
16 Floor, Unit B, Jiatai International Mansion, No 41, Dongsihuan Zhong Road, Chaoyang District, Beijing
Contact Person
Sellina