5KP70A-HR Circuit Protection

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Transient Voltage Suppressors (TVS) Diodes are an important component of many electronic systems. They are used to protect sensitive integrated circuits from excessive voltage, current and transients. The 5KP70A-HR is a TVS diode made by Littelfuse, Inc., a leading supplier of TVS diodes and semiconductor protection products.

The 5KP70A-HR is a unidirectional diode rated for 70V (VRM) with a surge current capability of 5kA. This narrow, low-power diode is suitable for use in many automotive, telecom, consumer electronics, computer and general industrial applications. Its low capacitance make it particularly suitable for high speed data applications. Its non-directional device type allows it to be used as an overall clamp or series element with minimum forward voltage drop while still providing excellent surge protection.

The device is encapsulated in a robust, hermetically and environmentally sealed package to protect the diode from potentially damaging external conditions. Additionally, a wide operating temperature range (-65°C to +150°C Tj) allows for a wide range of environmental conditions encountered in various applications. The diode is also RoHS compliant.

The working principle of 5KP70A-HR is straightforward. When the applied voltage across the diode exceeds its maximum reverse breakdown voltage (VRM), it begins to conduct, limiting the voltage across the diode to its rated breakdown voltage. This prevents the circuit from exceeding the VRM. The forward recovery time is extremely short, so that the diode can effectively limit the magnitude and duration of voltage spikes, EFTs, and lightning strikes.

The 5KP70A-HR is an ideal choice for protecting electronic equipment against voltage spikes and transients associated with primary and secondary protection circuits such as fuses, inductors, and varistors. Its low capacitance makes it well suited for high speed and data signal applications where transient interference is not desirable. Its robust construction ensures reliability and long term performance in the toughest of applications.

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