Bourns SD Series Circuit Breakers
Bourns SD Series Circuit Breakers offer overtemperature and overcurrent protection with a wide range of temperature options. The SD series circuit breakers control abnormal excessive current virtually and instantaneously up to rated limits. These SD (Surface Mount Thermal Cutoff Device) Breakers support high corrosion resistance. These circuit breakers support application temperatures ranging from -40°C to +125°C with a maximum resistance of 4mΩ. Typical applications include heaters, motors, battery packs, and lithium-ion batteries.
Features
- AEC-Q200 compliant
- Controls abnormal, excessive current virtually instantaneously up to rated limits
- High corrosion resistance
- Miniature Thermal Cutoff (TCO) device
- Overtemperature and overcurrent protection
- Surface mount and small body size
- Wide range of temperature options
Applications
- Battery packs
- Heaters
- Lithium-ion batteries in PCs, tablets, smartphones, and power banks
- Motors
Technical Specifications
| Parameters | Values |
|---|---|
| Application temperature range | -40°C to +125°C |
| Contact rating | 14V DC at 8A |
| Durability | 10000 cycles |
| Maximum resistance | 4mΩ |
Video
This TTI Tech Specs video for Bourns SD Series Circuit Breakers explains that these circuit breakers come in two main varieties, the A and W variants, where the A has a resistive element between the terminals, while the W has no such element. The maximum operating voltage for the breakers is 28V while the maximum tripping current is 35A and they have a maximum contact resistance of 4mΩ.
See the video transcript below
Video Transcript
Circuit breakers are an essential component in circuit protection, but many of the options available to engineers are typically slower than the queue at the DMV, but Bourns SD Series Circuit Breakers provide engineers with a nearly instant circuit protection device. The SD Series Circuit Breakers provide both overcurrent and overtemperature protection and are available in a wide range of temperature tripping points.
The SD Series Circuit Breakers come in two main varieties, the A and W variants, where the A has a resistive element between the terminals, while the W has no such element. The maximum operating voltage for the breakers is 28V while the maximum tripping current is 35A and they have a maximum contact resistance of 4mΩ. They’re AEC-Q200 qualified, making them applicable in the automotive industry. SD Series Circuit Breakers are highly resistant to corrosion, can withstand 10000 cycles, and have an operating temperature from -40°C to +125°C.
