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In-Car Navigation System

System View | Block Diagram
Protection Area Illustration (click to open larger image in new window)
  1. Antenna
  2. Backlight Heater
  3. Battery
  4. Buttons
  5. CD / DVD Player
  6. Circuit Board
  7. Data Line Port
  8. Hard Disk Drive
  9. I/O Power Port
  10. Memory Card Slot
  11. Power-line
  12. RF Tuner
  13. USB 2.0 port


I/O Power Port I/O Port Circuit Board RF tuner Hard Disk Drive data line Data Line Antenna Antenna Hard Disk Drive Memory Card Slot Memory Card Slot Backlight Heater USB USB Power Line Battery Battery Buttons/Keyboard Buttons/Keyboard CD/DVD Player CD/DVD Player

Data Line Port Protection

Problem: Short-circuit protection

The CCP (customer convenience port) transfers signal and power can be altered when a downstream device is shorted or damaged. This may happen when a damaged cable or connector is plugged into the port.
 

Solution: PolySwitch devices.

To help avoid permanently damaging the CCP, effective and reliable protection is needed. PolySwitch devices protect against overcurrent or overtemperature by limiting the flow of current in the dataline circuit.

 

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

Applicable Products: decaSMD, nanoSMD, microSMD, miniSMD, SMD, SMDH, AHS, ASMD.
Download SMD Datasheet - (pdf 440KB)
Agency Recognition: UL E74889, TÜV R9872049, R9872048, R2172061, CSA 078165_C_000. Please note that all SMD, mini SMD, nanoSMD, ASMD and AHS PolySwitch devices have been tested to meet the AECQ200 specification.
 

Read more about Raychem Radial-leaded PolySwitch devices.

Applicable Products: RXEF, RTEF, RUEF, RUSBF, RHEF, RGEF, AGRF, AHRF, BBRF.
Download Radial-leaded PolySwitch Datasheet - (pdf 707 KB)
Agency recognitions: UL E74889, CSA 078165_C_000, TÜV. Please note that all AHRF and AGRF PolySwitch devices have been tested to meet the AECQ200 specification.

 

Circuit Diagram / Schematic
 

Problem: Electrostatic Discharge (ESD)

An Electrostatic discharge (ESD) can result in either catastrophic or latent damage of the equipment.
 

Solution: PESD

Extremely low capacitance ESD protection devices (PESD) help shunt ESD away from sensitive circuitry in electronic devices without inducing signal distortion. PESD, which is a low capacitance (typically 0.25pF) ESD protection device, is capable of withstanding numerous ESD transients, and is a RoHS & IEC61000-4-2 compliant device having low leakage current and low clamping voltage.

 

Read more about the Raychem ESD protection (PESD) device.


Applicable Product(s): PESD0402, PESD0603.
Download PESD Datasheet - (pdf 318KB)

 

Circuit Diagram / Schematic
 

Application Notes:

• Automotive IEEE 1394 - (pdf 75KB)
 

Competitor Cross-reference

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

Block Diagram