P6KE51CA STMicroelectronics TVS Diode (Bi-directional) (Diodes, Axial Diameter Horizontal Mounting) In Stock

Name: P6KE51CA
Brand: STMicroelectronics
SKU: P6KE51CA
Availability: InStock

P6KE51CA is an STMicroelectronics bidirectional transient voltage suppressor (TVS) diode rated at 600 W peak pulse power with a 51 V standoff voltage and 91 V maximum clamping voltage. It provides robust ESD and surge protection for AC and DC power lines. Available in an axial through-hole package for ease of PCB assembly.

OBSOLETETVS Diode (Bi-directional)Verified Jun 2026

Package / Visual Reference

P6KE51CADiodes, Axial Diameter Horizontal Mounting

Quick Facts

Manufacturer: STMicroelectronics
Package: Diodes, Axial Diameter Horizontal Mounting
Pin Count: 2
Lifecycle: OBSOLETE
Datasheet: P6KE51CA Datasheet PDF
Category: TVS Diode (Bi-directional)
Price: From $0.0514(MOQ 1)
Temp Range: ?°C to 175.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of P6KE51CA?

600 W peak pulse power dissipation at 10/1000 µs waveform for heavy surge handling
51 V nominal breakdown voltage (48.5–53.6 V range) for 48 V line protection
Bidirectional configuration for AC or dual-polarity DC circuit protection
91 V maximum clamping voltage, limiting transient stress on downstream components
Low diode capacitance from 375 pF enabling use in moderate-frequency signal lines
Silicon TVS technology for fast sub-nanosecond response to transient events

What is P6KE51CA used for?

P6KE51CA is used to protect 48 V power supply rails, industrial control I/O ports, and telecom line interfaces from ESD events and lightning-induced surges. Its bidirectional clamping and 600 W peak pulse capability make it suitable for motor drive inputs, solar inverter protection circuits, and signal line surge suppressors.

What are the specifications of P6KE51CA?

YTEOL	0
Breakdown Voltage-Max	53.6V
Breakdown Voltage-Min	48.5V
Breakdown Voltage-Nom	51V
Case Connection	ISOLATED
Clamping Voltage-Max	91V
Configuration	SINGLE, 1 CHANNEL
Diode Capacitance-Min	375pF
Diode Element Material	SILICON
Diode Type	TRANS VOLTAGE SUPPRESSOR DIODE
JESD-30 Code	O-PALF-W2
Non-rep Peak Rev Power Dis-Max	600W
Number of Elements	1
Package Body Material	PLASTIC/EPOXY
Package Shape	ROUND
Package Style	LONG FORM
Polarity	BIDIRECTIONAL
Power Dissipation-Max	5W
Qualification Status	Not Qualified
Reference Standard	UL RECOGNIZED
Rep Pk Reverse Voltage-Max	43.6V
Reverse Current-Max	5 µA
Reverse Test Voltage	43.6V
Surface Mount	NO
Technology	AVALANCHE
Terminal Form	WIRE
Terminal Position	AXIAL
Package	Diodes, Axial Diameter Horizontal Mounting

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
ECCN	EAR99
HTS Code	8541.10.00.50

Where can I find the P6KE51CA datasheet?

P6KE51CA Datasheet Download

Official datasheet from STMicroelectronics

What are equivalent replacements for P6KE51CA?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

How much peak pulse energy can P6KE51CA absorb in a 10/1000 µs surge waveform?

P6KE51CA is rated for 600 W peak pulse power dissipation using the standard 10/1000 µs waveform, allowing it to absorb transient surges on 48 V rails without permanent degradation under single-pulse conditions.

At what voltage will P6KE51CA clamp a transient to protect downstream ICs on a 48 V bus?

The maximum clamping voltage of P6KE51CA is 91 V at the rated peak pulse current, so components on the 48 V bus see no more than 91 V during a protected transient event, keeping them within typical absolute maximum ratings.

Is P6KE51CA suitable for AC signal line protection, given its bidirectional rating?

Yes. The CA suffix denotes a bidirectional TVS, meaning the 51 V nominal breakdown applies in both polarities, making P6KE51CA appropriate for AC-coupled signal lines, relay coil flyback suppression, and dual-rail power buses.

How does the 375 pF minimum capacitance of P6KE51CA affect its use on high-frequency signal lines?

At 375 pF the device introduces noticeable capacitive loading above a few MHz. P6KE51CA is best suited for DC power lines or low-frequency control signals below 1 MHz; higher-frequency signal lines should use lower-capacitance TVS alternatives.

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AvailabilityIn Stock

Reference Price (USD)

From $0.0514

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
1+	$0.1100	$0.11
100+	$0.0988	$9.88
250+	$0.0961	$24.03
500+	$0.0750	$37.50
1000+	$0.0605	$60.50
3000+	$0.0514	$154.20

pcs

Unit price: $0.1100 · Total: $0.11

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Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

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P6KE51CA STMicroelectronics TVS Diode (Bi-directional) (Diodes, Axial Diameter Horizontal Mounting) In Stock

What are the key features of P6KE51CA?

What is P6KE51CA used for?

What are the specifications of P6KE51CA?

Compliance & Regulatory

Where can I find the P6KE51CA datasheet?

What are equivalent replacements for P6KE51CA?

Frequently Asked Questions

How much peak pulse energy can P6KE51CA absorb in a 10/1000 µs surge waveform?

At what voltage will P6KE51CA clamp a transient to protect downstream ICs on a 48 V bus?

Is P6KE51CA suitable for AC signal line protection, given its bidirectional rating?

How does the 375 pF minimum capacitance of P6KE51CA affect its use on high-frequency signal lines?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About STMicroelectronics

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