EPCOS Thermistor, NTC Type 25 Ω 18 mm 11 mm 7 mm
- RS Stock No.:
- 185-7827
- Mfr. Part No.:
- B57238S0250M000
- Brand:
- EPCOS
Subtotal (1 pack of 5 units)*
£3.31
(exc. VAT)
£3.97
(inc. VAT)
FREE delivery for orders over £60.00
In Stock
- Plus 135 unit(s) shipping from 04 May 2026
- Plus 1,450 unit(s) shipping from 11 May 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit | Per Pack* |
|---|---|---|
| 5 + | £0.662 | £3.31 |
*price indicative
- RS Stock No.:
- 185-7827
- Mfr. Part No.:
- B57238S0250M000
- Brand:
- EPCOS
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | EPCOS | |
| Product Type | Thermistor | |
| Series | S238 | |
| Temperature Coefficient Type | NTC | |
| Thermal Time Constant | 80s | |
| Tolerance ± | 20% | |
| Automotive Standard | No | |
| Mount Type | PCB | |
| Maximum Power Rating | 3.9W | |
| Resistance at 25°C | 25Ω | |
| Height | 18mm | |
| Length | 11mm | |
| Standards/Approvals | UL 1434 E69802, CQC 0900104539, IEC 101QA12, VDE 40038223 | |
| Depth | 7mm | |
| Minimum Operating Temperature | -55°C | |
| Maximum Operating Temperature | 170°C | |
| Select all | ||
|---|---|---|
Brand EPCOS | ||
Product Type Thermistor | ||
Series S238 | ||
Temperature Coefficient Type NTC | ||
Thermal Time Constant 80s | ||
Tolerance ± 20% | ||
Automotive Standard No | ||
Mount Type PCB | ||
Maximum Power Rating 3.9W | ||
Resistance at 25°C 25Ω | ||
Height 18mm | ||
Length 11mm | ||
Standards/Approvals UL 1434 E69802, CQC 0900104539, IEC 101QA12, VDE 40038223 | ||
Depth 7mm | ||
Minimum Operating Temperature -55°C | ||
Maximum Operating Temperature 170°C | ||
NTC thermistors are specially developed to limit the current at turn-on by their relatively high resistance when they are cold. When the NTC thermistor heats up as a result of the current load its resistance decreases by a factor of 10 to 50, and the power it draws reduces accordingly. NTC thermistors are able to handle higher inrush currents than fixed resistors with the same power consumption.
Leaded and coated NTC thermistors
Tinned copper wire, kinked
Component marking includes the manufacturer'slogo, resistance Value and date code
Highly stable electrical characteristics
Applications
Inrush current limiting, e.g. in switch-mode power supplies, soft-start motors