P6KE12A-T Transient Voltage Suppressor Diode - Equivalent & Substitute Parts

Part Overview

The P6KE12A-T is a unidirectional transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection applications. This component features a 10.2V reverse standoff voltage with 16.7V maximum clamping voltage and 36A peak pulse current capability in a through-hole DO-15 package. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued system support and new designs.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	10.2V
Voltage - Breakdown (Min)	11.4V
Voltage - Clamping (Max) @ Ipp	16.7V
Current - Peak Pulse (10/1000µs)	36A
Power - Peak Pulse	600W
Operating Temperature Range	-55°C ~ 175°C (TJ)
Package / Case	DO-204AC, DO-15, Axial
Mounting Type	Through Hole
Type	Zener
Unidirectional Channels	1

Substitute Part Grouping Explanation

Substitution eligibility for the P6KE12A-T is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

Voltage - Reverse Standoff (Typ): 10.2V
Voltage - Breakdown (Min): 11.4V
Voltage - Clamping (Max) @ Ipp: 16.7V
Current - Peak Pulse (10/1000µs): 36A ±1A tolerance acceptable
Power - Peak Pulse: 600W
Type: Zener, Unidirectional

Mechanical Equivalence Requirements:

Package / Case: DO-204AC or DO-15 (axial through-hole)
Mounting Type: Through Hole
Operating Temperature: -55°C minimum to 175°C maximum

All identified substitute parts meet these criteria and are classified as active products, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Part Number	Manufacturer	Status	Vwm (Typ)	Vbr (Min)	Vc (Max)	Ipp (A)	Temp Range	Package
P6KE12A-T	Diodes Incorporated	Obsolete	10.2V	11.4V	16.7V	36A	-55°C ~ 175°C	DO-15
P6KE12A	Fairchild Semiconductor	Active	10.2V	11.4V	16.7V	37A	-50°C ~ 175°C	DO-15
P6KE12A-AP	Micro Commercial Co	Active	10.2V	11.4V	16.7V	36A	-55°C ~ 175°C	DO-15
P6KE12A-BP	Micro Commercial Co	Active	10.2V	11.4V	16.7V	36A	-55°C ~ 175°C	DO-15
P6KE12A-E3/54	Vishay General Semiconductor	Active	10.2V	11.4V	16.7V	35.9A	-55°C ~ 175°C	DO-204AC
P6KE12A-TP	Micro Commercial Co	Active	10.2V	11.4V	16.7V	36A	-55°C ~ 175°C	DO-15
P6KE12AE3/TR13	Microsemi Corporation	Active	10.2V	11.4V	16.7V	36A	-65°C ~ 150°C	Axial
P6KE12AHE3/54	Vishay General Semiconductor	Active	10.2V	11.4V	16.7V	35.9A	-55°C ~ 175°C	DO-204AC
P6KE12A-B	Littelfuse	Active	10.2V	11.4V	16.7V	36.5A	-55°C ~ 175°C	DO-204AC
P6KE12A-G	Comchip Technology	Active	10.2V	11.4V	16.7V	35.93A	-55°C ~ 150°C	DO-15

Engineering Selection Recommendations

All identified substitute parts maintain electrical equivalence within acceptable engineering tolerances. Selection should prioritize active product status and compliance certifications:

Primary Substitutes (Highest Compatibility): P6KE12A-TP (Micro Commercial Co), P6KE12A-AP (Micro Commercial Co), and P6KE12A-BP (Micro Commercial Co) provide direct mechanical and electrical equivalence with identical operating temperature range (-55°C ~ 175°C) and DO-15 package configuration.

Secondary Substitutes (Electrical Equivalence with Package Variation): P6KE12A-E3/54 and P6KE12AHE3/54 (Vishay General Semiconductor) deliver electrical equivalence but utilize DO-204AC package designation. Both are ROHS3 compliant and AEC-Q101 qualified (AHE3/54 variant). P6KE12A-B (Littelfuse) offers equivalent performance in DO-204AC package with ROHS3 compliance.

Tertiary Substitutes (Temperature Range Consideration): P6KE12AE3/TR13 (Microsemi Corporation) maintains electrical specifications but operates within -65°C ~ 150°C range, suitable for applications not requiring the full 175°C upper limit. P6KE12A-G (Comchip Technology) operates -55°C ~ 150°C, acceptable for standard industrial applications.

Fairchild Semiconductor P6KE12A: Active product with 37A peak pulse current (1A above specification) and -50°C minimum operating temperature. Acceptable for applications not requiring -55°C lower limit operation.

Frequently Asked Questions (FAQ)

Q: Can P6KE12A-E3/54 replace P6KE12A-T in existing PCB designs? A: P6KE12A-E3/54 maintains identical electrical specifications but uses DO-204AC package designation instead of DO-15. Both are through-hole axial components with compatible lead spacing. PCB footprint verification is required before substitution.

Q: What is the difference between P6KE12A-TP and P6KE12A-AP packaging? A: P6KE12A-TP is supplied in Cut Tape (CT) format for automated assembly. P6KE12A-AP is supplied in Bulk packaging. Electrical and mechanical specifications are identical. Selection depends on assembly process requirements.

Q: Is P6KE12AHE3/54 suitable for automotive applications? A: Yes. P6KE12AHE3/54 carries automotive grade designation and AEC-Q101 qualification, meeting automotive reliability standards. This variant is recommended for automotive circuit protection applications.

Q: Why does P6KE12A (Fairchild) specify 37A instead of 36A peak pulse current? A: Peak pulse current tolerance of ±1A is within acceptable engineering variation for TVS diode specifications. This part remains electrically equivalent for general-purpose protection applications.

Q: Can P6KE12AE3/TR13 operate at -55°C? A: P6KE12AE3/TR13 operates from -65°C minimum, exceeding the -55°C requirement. This part is suitable for applications requiring extended low-temperature performance.

Q: What compliance certifications apply to these substitute parts? A: All identified substitutes are ROHS3 compliant. P6KE12AHE3/54 carries additional AEC-Q101 automotive qualification. REACH compliance status varies by manufacturer; refer to individual datasheets for specific regulatory requirements.

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