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Cell-phone Application

System View | Block Diagram
Protection Area Illustration (click to open larger image in new window)
  1. Antenna
  2. Battery
  3. Battery Connector
  4. DC Power Port
  5. Earphone / Microphone
  6. Frontend IC
  7. I/O Ports
  8. Keyboard Connector
  9. Keypad Buttons
  10. Mini USB 2.0 Port
  11. RX/TX Switch IC
  12. SIM Card Connect

Battery Connector (on PCB) Protection

Problem: Overcurrent / Overtemperature

PCB traces can over heat or be damaged by an overcurrent event from a malfunctioning battery.

 

Solution: PolySwitch devices.

PolySwitch devices help protects against overcurrent or overtemperature by thermally "tripping", which reduces the current flowing through the trace.

 

Read more about the Raychem Surface-mount (SMD) PolySwitch device

Applicable Product Series: SMD
Download SMD Datasheet - (pdf 439KB)
Agency Recognition: UL E74889, TÜV R9872049, R9872048, R2172061, CSA 078165_C_000.

 

Read more about the Raychem Radial-leaded (R-line) PolySwitch device

Applicable Product Series: RXEF, RTEF
Download R-line Datasheet - (pdf 707KB)
Agency Recognition: UL E74889, CSA 078165_C_000, TÜV.

 

Application Notes:

PCB Trace Protection - (pdf 68KB)

 

Competitor Cross-reference

Cross-reference competitor products
NOTE: You should already know the competitor part number to cross-reference it with our part.

Microphone / Earphone I/O Ports (mini) USB 2.0 Port SIM Card Connect RX/TX Switch IC SIM Card Connect RX/TX Switch IC (mini) USB 2.0 Port AC/DC Power Adapter (wall-wart) AC/DC Power Adapter (wall-wart) Microphone / Earphone Microphone / Earphone Keyboard Buttons Keyboard Connector Keyboard Connector I/O Ports Frontend IC Frontend IC Battery Connector Battery Battery Antenna Antenna DC Power Port DC Power Port Keyboard Buttons I/O Ports (mini) USB 2.0 Port SIM Card Connect RX/TX Switch IC AC/DC Power Adapter (wall-wart) Microphone / Earphone Keypad Buttons Keyboard Connector I/O Ports Frontend IC Battery Connector Battery Antenna DC Power Port