1.5KE8V2A-B Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The 1.5KE8V2A-B is a unidirectional transient voltage suppressor diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in through-hole applications. This component features a 7.02V reverse standoff voltage, 12.1V maximum clamping voltage, and 1500W peak pulse power rating in a DO-201 axial package. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued system support and new design implementations.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	7.02	V
Voltage - Breakdown (Min)	7.79	V
Voltage - Clamping (Max) @ Ipp	12.1	V
Current - Peak Pulse (10/1000µs)	124	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 of the 1.5KE8V2A-B is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Voltage - Reverse Standoff (Typ): 7.02V
Voltage - Breakdown (Min): 7.79V
Voltage - Clamping (Max) @ Ipp: 12.1V
Current - Peak Pulse (10/1000µs): 120-130A range
Power - Peak Pulse: 1500W
Operating Temperature Range: -55°C to 175°C minimum
Mounting Type: Through Hole
Package / Case: DO-201AA, DO-27, or Axial equivalent
Type: Zener, Unidirectional

Compliance Requirements:

RoHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped into two categories: direct electrical equivalents with active product status from major manufacturers (Vishay, Taiwan Semiconductor, Littelfuse, Comchip, Micro Commercial Co, Solid State Inc., and Microchip), and alternative package configurations that maintain electrical performance within specified tolerances.

Parameter Comparison

Manufacturer Part Number	Manufacturer	VWM (Typ) V	VBR (Min) V	VC (Max) @ Ipp V	Ipp A	Power W	Temp Range °C	Package	Status
1.5KE8V2A-B	Diodes Incorporated	7.02	7.79	12.1	124	1500	-55 to 175	DO-201	Obsolete
1.5KE8.2A-E3/54	Vishay General Semiconductor	7.02	7.79	12.1	124	1500	-55 to 175	DO-201AA	Active
1.5KE8.2AHE3_A/C	Vishay General Semiconductor	7.02	7.79	12.1	124	1500	-55 to 175	DO-201AA	Active
1N6269A-E3/54	Vishay General Semiconductor	7.02	7.79	12.1	124	1500	-55 to 175	DO-201AA	Active
1N6269AHE3_A/C	Vishay General Semiconductor	7.02	7.79	12.1	124	1500	-55 to 175	DO-201AA	Active
1.5KE8.2A	Taiwan Semiconductor Corporation	7.02	7.79	12.1	130	1500	-55 to 175	DO-201	Active
1.5KE8.2A-B	Littelfuse Inc.	7.02	7.79	12.1	125.6	1500	-55 to 175	DO-201	Active
1.5KE8.2A-G	Comchip Technology	7.0	7.79	12.1	123.97	1500	-55 to 150	DO-201	Active
1.5KE8.2A-TP	Micro Commercial Co	7.02	7.79	12.1	-	1500	-55 to 175	DO-201AE	Active
1N5631A	Solid State Inc.	7.02	7.79	12.1	124	1500	-65 to 175	DO-13	Active
5KP6.5E3/TR13	Microchip Technology	6.5	7.22	12.3	407	5000	-55 to 175	P600	Active

Engineering Selection Recommendations

Primary Substitutes (Electrical and Mechanical Equivalence):

The following parts maintain full electrical and mechanical compatibility with the 1.5KE8V2A-B and are recommended as direct replacements:

1.5KE8.2A-E3/54 (Vishay): Active status, identical electrical specifications, DO-201AA package, ROHS3 compliant, standard cut tape packaging
1.5KE8.2AHE3_A/C (Vishay): Active status, AEC-Q101 automotive qualified, identical electrical specifications, suitable for automotive applications
1N6269A-E3/54 (Vishay): Active status, identical electrical specifications, DO-201AA package, ROHS3 compliant
1N6269AHE3_A/C (Vishay): Active status, AEC-Q101 automotive qualified, identical electrical specifications
1.5KE8.2A (Taiwan Semiconductor Corporation): Active status, peak pulse current 130A (within acceptable tolerance), ROHS3 compliant, high inventory availability
1.5KE8.2A-B (Littelfuse Inc.): Active status, peak pulse current 125.6A (within acceptable tolerance), ROHS3 compliant, bulk packaging available
1.5KE8.2A-TP (Micro Commercial Co): Active status, identical voltage specifications, ROHS3 compliant, cut tape packaging

Secondary Substitutes (Package Variation):

1.5KE8.2A-G (Comchip Technology): Active status, electrical equivalence maintained, operating temperature range -55°C to 150°C (reduced upper limit), DO-201 package, suitable for applications not requiring 175°C operation
1N5631A (Solid State Inc.): Active status, electrical equivalence maintained, DO-13 package (smaller form factor), extended lower temperature rating to -65°C, suitable for space-constrained applications

Not Recommended:

5KP6.5E3/TR13 (Microchip Technology): Voltage specifications differ (6.5V standoff vs. 7.02V), higher power rating (5kW vs. 1.5kW), different package (P600), and higher peak pulse current (407A vs. 124A). This part is not electrically equivalent and should not be used as a substitute.

Frequently Asked Questions (FAQ)

Q: Can I use 1N5631A as a substitute if my circuit board space is limited?

A: Yes, 1N5631A maintains identical electrical specifications (7.02V standoff, 12.1V clamping, 124A peak pulse, 1500W power) and is active status. The DO-13 package is smaller than DO-201, making it suitable for space-constrained designs. Verify PCB layout compatibility with the smaller package footprint before implementation.

Q: What is the difference between Vishay's 1.5KE8.2A-E3/54 and 1N6269A-E3/54?

A: Both parts are manufactured by Vishay and share identical electrical specifications (7.02V standoff, 7.79V breakdown, 12.1V clamping, 124A peak pulse, 1500W power). The primary difference is the base part number designation. Both are active, ROHS3 compliant, and suitable for direct substitution of the 1.5KE8V2A-B.

Q: Are automotive-qualified versions available?

A: Yes. Both 1.5KE8.2AHE3_A/C and 1N6269AHE3_A/C are manufactured by Vishay with AEC-Q101 automotive qualification. These parts maintain identical electrical specifications and are suitable for automotive applications requiring formal qualification documentation.

Q: Why is 5KP6.5E3/TR13 listed but not recommended?

A: The 5KP6.5E3/TR13 has different electrical specifications: 6.5V reverse standoff (vs. 7.02V), 7.22V breakdown (vs. 7.79V), and 12.3V clamping (vs. 12.1V). Additionally, it features 5000W power rating and 407A peak pulse current, making it unsuitable for circuits designed for the 1.5KE8V2A-B specifications. Use only if your application specifically requires higher power handling.

Q: What packaging options are available for the substitute parts?

A: Substitute parts are available in multiple packaging formats: cut tape (CT) for automated assembly, tape and reel (TR) for high-volume production, bulk for manual assembly, and tape and box (TB) for mixed-volume applications. Select packaging based on your assembly process and volume requirements. All maintain identical electrical performance.

Q: Can I use 1.5KE8.2A-G if my application operates at 175°C?

A: No. The 1.5KE8.2A-G has a maximum operating temperature of 150°C, which is below the 175°C specification of the original 1.5KE8V2A-B. Use this part only in applications with maximum junction temperatures of 150°C or lower. For 175°C operation, select alternatives such as 1.5KE8.2A-E3/54, 1.5KE8.2A, or 1.5KE8.2A-B.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts are ROHS3 compliant with moisture sensitivity level 1 (unlimited), matching the environmental compliance of the original 1.5KE8V2A-B.

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