1.5KE100A Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The 1.5KE100A is a unidirectional Zener-type transient voltage suppressor diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection applications. This component features a 1500W peak pulse power rating, 85.5V reverse standoff voltage, and 137V maximum clamping voltage. The original part is classified as obsolete, necessitating identification of active equivalent and substitute parts that maintain electrical and mechanical compatibility for continued system support and new designs.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	85.5	V
Voltage - Breakdown (Min)	95	V
Voltage - Clamping (Max) @ Ipp	137	V
Current - Peak Pulse (10/1000µs)	11	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	—

Substitute Part Grouping Explanation

Substitution eligibility for the 1.5KE100A is determined by strict equivalence across the following electrical and mechanical parameters:

Voltage - Reverse Standoff (Typ): 85.5V
Voltage - Breakdown (Min): 95V
Voltage - Clamping (Max) @ Ipp: 137V
Power - Peak Pulse: 1500W
Operating Temperature Range: -55°C to 175°C minimum
Mounting Type: Through Hole
Package / Case: DO-201 series (DO-201AA, DO-201AE, DO-201AD) or equivalent axial configuration
Type: Zener unidirectional diode with single channel

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents (All Parameters Match): Parts meeting all electrical specifications and operating temperature range of -55°C to 175°C.

Category B - Functional Equivalents with Reduced Temperature Range: Parts meeting all electrical specifications but with operating temperature range limited to -55°C to 150°C. These are suitable only for applications not requiring the full 175°C upper temperature limit.

Parameter Comparison

Part Number	Manufacturer	Status	Vwm (Typ) V	Vbr (Min) V	Vc (Max) V	Ipp (Typ) A	Ppk W	Tj Range °C	Package	RoHS
1.5KE100A-T	Diodes Incorporated	Obsolete	85.5	95	137	11	1500	-55 to 175	DO-201	ROHS3
1.5KE100A-AP	Micro Commercial Co	Active	85.5	95	137	11.1	1500	-55 to 175	DO-201AE	—
1.5KE100A-TP	Micro Commercial Co	Active	85.5	95	137	—	1500	-55 to 175	DO-201AE	ROHS3
1V5KE100A	Taiwan Semiconductor Corporation	Active	85.5	95	137	11	1500	-55 to 175	DO-201AD	ROHS3
1.5KE100A	Taiwan Semiconductor Corporation	Active	85.5	95	137	11.4	1500	-55 to 175	DO-201	ROHS3
1.5KE100A-B	Littelfuse Inc.	Active	85.5	95	137	11.1	1500	-55 to 175	DO-201	ROHS3
1.5KE100A-G	Comchip Technology	Active	85.5	95	137	10.95	1500	-55 to 150	DO-201	ROHS3
1.5KE100A-HF	Comchip Technology	Active	85.5	95	137	10.95	1500	-55 to 150	DO-201	ROHS3
1N5657A	Microchip Technology	Active	85.5	95	137	11	1500	-65 to 175	DO-13	Non-compliant
1N6295A-E3/54	Vishay General Semiconductor	Active	85.5	95	137	10.9	1500	-55 to 175	DO-201AA	—

Engineering Selection Recommendations

Primary Substitutes (Category A - Full Compatibility):

1.5KE100A (Taiwan Semiconductor Corporation) - Active status, ROHS3 compliant, full temperature range -55°C to 175°C, standard DO-201 package. Manufacturer-recommended replacement.

1.5KE100A-B (Littelfuse Inc.) - Active status, ROHS3 compliant, full temperature range -55°C to 175°C, standard DO-201 package. Established supplier with high inventory availability.

1V5KE100A (Taiwan Semiconductor Corporation) - Active status, ROHS3 compliant, full temperature range -55°C to 175°C, DO-201AD package variant.

1.5KE100A-AP (Micro Commercial Co) - Active status, full temperature range -55°C to 175°C, DO-201AE package variant. AEC-Q101 qualified for automotive applications.

1.5KE100A-TP (Micro Commercial Co) - Active status, ROHS3 compliant, full temperature range -55°C to 175°C, DO-201AE package variant, Cut Tape packaging.

1N6295A-E3/54 (Vishay General Semiconductor) - Active status, full temperature range -55°C to 175°C, TransZorb® series, DO-201AA package. AEC-Q101 qualified for automotive applications.

Secondary Substitutes (Category B - Reduced Temperature Range):

1.5KE100A-G (Comchip Technology) - Active status, ROHS3 compliant, operating temperature range -55°C to 150°C. Suitable for applications not requiring operation above 150°C.

1.5KE100A-HF (Comchip Technology) - Active status, ROHS3 compliant, operating temperature range -55°C to 150°C, 1.5KE-HF series. Suitable for applications not requiring operation above 150°C.

Package Consideration:

1N5657A (Microchip Technology) - Active status, DO-13 package (different from DO-201 series). Electrical parameters match; however, physical package differs. Suitable only for designs where DO-13 package footprint is acceptable. RoHS non-compliant status requires compliance verification.

Frequently Asked Questions (FAQ)

Q: Can I substitute 1.5KE100A-G or 1.5KE100A-HF for the original 1.5KE100A-T?

A: Yes, provided your application does not require operation above 150°C junction temperature. Both parts meet all electrical specifications (85.5V standoff, 137V clamping, 1500W peak power) but have a reduced upper operating temperature limit of 150°C versus the original 175°C. Verify your thermal design requirements before selection.

Q: What is the difference between DO-201, DO-201AA, DO-201AE, and DO-201AD packages?

A: All are axial through-hole packages within the DO-201 family with identical electrical performance and mechanical compatibility for standard PCB mounting. DO-201AA, DO-201AE, and DO-201AD are specific package designations from different manufacturers. Verify footprint compatibility with your PCB design, as minor dimensional variations may exist between designations.

Q: Is 1N5657A a direct substitute despite the DO-13 package?

A: 1N5657A meets all electrical specifications (85.5V standoff, 95V breakdown, 137V clamping, 11A peak current, 1500W power) and has an extended lower temperature limit (-65°C versus -55°C). However, the DO-13 package is physically different from DO-201. Use only if your PCB layout accommodates DO-13 footprint. Note: RoHS non-compliant status requires regulatory compliance verification.

Q: Which substitute offers the best compliance profile?

A: 1.5KE100A (Taiwan Semiconductor Corporation), 1.5KE100A-B (Littelfuse Inc.), and 1V5KE100A (Taiwan Semiconductor Corporation) all provide ROHS3 compliance, full -55°C to 175°C operating range, and active product status. These are recommended for new designs and compliance-critical applications.

Q: Are automotive-qualified alternatives available?

A: Yes. 1.5KE100A-AP (Micro Commercial Co) and 1N6295A-E3/54 (Vishay General Semiconductor) both carry AEC-Q101 qualification, suitable for automotive applications requiring qualified component status.

Q: What is the impact of peak pulse current variation (10.9A to 11.4A) across substitute parts?

A: All substitute parts remain within the 1500W peak pulse power specification. Peak current variations of ±5% around the nominal 11A specification are within normal manufacturing tolerance and do not affect functional equivalence for transient voltage suppression applications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message