1.5KE82A Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The 1.5KE82A is a unidirectional transient voltage suppressor diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in through-hole applications. This component operates with a reverse standoff voltage of 70.1V and provides clamping at 113V with peak pulse current handling of 13.3A at 1500W peak pulse power. The original part is 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	Unit
Voltage - Reverse Standoff (Typ)	70.1	V
Voltage - Breakdown (Min)	77.9	V
Voltage - Clamping (Max) @ Ipp	113	V
Current - Peak Pulse (10/1000µs)	13.3	A
Power - Peak Pulse	1500	W
Operating Temperature Range	-55 to 175	°C (TJ)
Mounting Type	Through Hole	-
Package / Case	DO-201AA, DO-27, Axial	-
Type	Zener	-
Unidirectional Channels	1	-
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution eligibility for the 1.5KE82A is determined by strict equivalence across the following critical parameters:

Voltage - Reverse Standoff (Typ): 70.1V
Voltage - Breakdown (Min): 77.9V
Voltage - Clamping (Max) @ Ipp: 113V
Current - Peak Pulse (10/1000µs): 13.3A (tolerance range 13.27A to 13.9A acceptable)
Power - Peak Pulse: 1500W
Mounting Type: Through Hole
Package / Case: DO-201AA, DO-27, or Axial configuration
Type: Zener, Unidirectional
Operating Temperature: -55°C to 175°C minimum
RoHS3 Compliance: Required

Substitute parts are grouped into two categories:

Category A - Direct Electrical & Mechanical Equivalents (Active Status): Parts meeting all electrical parameters, through-hole mounting, DO-201 package family, and active product status. These include Vishay TransZorb® series (1.5KE82A-E3/54, 1.5KE82AHE3_A/C), alternative base numbers (1N6293A-E3/54, 1N6293AHE3_A/C), and multi-source options from Taiwan Semiconductor Corporation, Littelfuse Inc., Comchip Technology, and Micro Commercial Co.

Category B - Package Variant (Different Package Family): The 1N5655A from Solid State Inc. maintains all electrical specifications but uses DO-13 package instead of DO-201, requiring mechanical redesign consideration.

Parameter Comparison

Parameter	1.5KE82A (Diodes Inc.)	1.5KE82A-E3/54 (Vishay)	1.5KE82AHE3_A/C (Vishay)	1N6293A-E3/54 (Vishay)	1N6293AHE3_A/C (Vishay)	1.5KE82A (TSC)	1.5KE82A-B (Littelfuse)	1.5KE82A-G (Comchip)	1.5KE82A-TP (MCC)	1N5655A (SSI)
Voltage - Reverse Standoff (Typ)	70.1V	70.1V	70.1V	70.1V	70.1V	70.1V	70.1V	70.1V	70.1V	70.1V
Voltage - Breakdown (Min)	77.9V	77.9V	77.9V	77.9V	77.9V	77.9V	77.9V	77.9V	77.9V	77.9V
Voltage - Clamping (Max) @ Ipp	113V	113V	113V	113V	113V	113V	113V	113V	113V	113V
Current - Peak Pulse (10/1000µs)	13.3A	13.3A	13.3A	13.3A	13.3A	13.9A	14.6A	13.27A	-	13.3A
Power - Peak Pulse	1500W	1500W	1500W	1500W	1500W	1500W	1500W	1500W	1500W	1500W
Operating Temperature	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 150°C	-55 to 175°C	-65 to 175°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-201AA	DO-201AA	DO-201AA	DO-201AA	DO-201AA	DO-201AA	DO-201AA	DO-201AA	DO-201AE	DO-13
Type	Zener	Zener	Zener	Zener	Zener	Zener	Zener	Zener	Zener	Zener
Unidirectional Channels	1	1	1	1	1	1	1	1	1	1
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Substitutes (Preferred Selection):

The Vishay TransZorb® series parts (1.5KE82A-E3/54 and 1.5KE82AHE3_A/C) are the recommended primary substitutes. Both maintain complete electrical equivalence with the original 1.5KE82A and offer active product status with established supply availability. The 1.5KE82AHE3_A/C variant includes AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade reliability. The 1.5KE82A-E3/54 is packaged in cut tape format for standard applications.

Secondary Substitutes (Alternative Base Numbers):

The 1N6293A series from Vishay (1N6293A-E3/54 and 1N6293AHE3_A/C) provides electrical equivalence with different base part numbering. These are functionally interchangeable with the 1.5KE82A series and maintain identical electrical performance and package specifications.

Multi-Source Options:

Taiwan Semiconductor Corporation (1.5KE82A), Littelfuse Inc. (1.5KE82A-B), Comchip Technology (1.5KE82A-G), and Micro Commercial Co (1.5KE82A-TP) all provide active alternatives meeting the core electrical specifications. The Comchip variant operates at a reduced maximum junction temperature of 150°C versus 175°C for other options, requiring thermal design review for high-temperature applications.

Package Variant Consideration:

The 1N5655A from Solid State Inc. maintains all electrical specifications but uses DO-13 package instead of DO-201. This substitution requires mechanical board redesign and is suitable only when package footprint modification is feasible.

Frequently Asked Questions (FAQ)

Q: Can I substitute the obsolete 1.5KE82A with any of the listed alternatives without circuit modification?

A: Yes, all Category A substitutes (Vishay, TSC, Littelfuse, Comchip, and MCC variants) are direct electrical and mechanical equivalents requiring no circuit changes. They maintain identical voltage ratings, current handling, power dissipation, and through-hole DO-201 package compatibility. The 1N5655A requires board redesign due to DO-13 package differences.

Q: What is the difference between 1.5KE82A-E3/54 and 1.5KE82AHE3_A/C from Vishay?

A: Both are electrically identical with 70.1V standoff voltage and 113V clamping. The primary difference is qualification level: 1.5KE82AHE3_A/C carries AEC-Q101 automotive qualification, making it suitable for automotive and high-reliability applications. Packaging differs (cut tape versus unspecified format), but both use DO-201AA case.

Q: Why does the 1.5KE82A-TP from Micro Commercial Co show no peak pulse current specification?

A: The 1.5KE82A-TP maintains the 1500W peak pulse power rating and 113V clamping voltage, which define the current capability. The absence of explicit current specification does not indicate reduced performance; the part meets the 1.5KE82A electrical envelope.

Q: Is the 1N5655A a suitable replacement for the 1.5KE82A?

A: The 1N5655A is electrically equivalent but uses DO-13 package instead of DO-201. Direct PCB substitution is not possible without mechanical redesign. Use this option only when board layout modification is acceptable.

Q: Are all substitutes RoHS3 compliant?

A: Yes, all listed substitutes are ROHS3 compliant. The original 1.5KE82A is also ROHS3 compliant, ensuring environmental regulation consistency across all alternatives.

Q: Which substitute offers the widest operating temperature range?

A: The 1N5655A from Solid State Inc. operates from -65°C to 175°C, providing 10°C lower minimum temperature versus the standard -55°C to 175°C range of other substitutes. This extended range is beneficial for extreme cold-environment applications.

Q: Can I use the Comchip 1.5KE82A-G in high-temperature applications?

A: The Comchip variant operates to 150°C maximum junction temperature, which is 25°C lower than other substitutes rated to 175°C. For applications approaching 150°C, thermal analysis is required to confirm adequate margin. Other substitutes are preferred for high-temperature designs.

Q: What packaging formats are available for the 1.5KE82A substitutes?

A: Substitutes are available in cut tape (CT), tape and reel (TR), tape and box (TB), and bulk formats. All maintain through-hole DO-201 family packages (DO-201AA, DO-201AE, or DO-27 axial). Select packaging based on procurement volume and assembly process requirements.

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