1.5KE10A-T Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The 1.5KE10A-T 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 1500W peak pulse power rating with 8.55V reverse standoff voltage and 14.5V maximum clamping voltage. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	8.55	V
Voltage - Breakdown (Min)	9.5	V
Voltage - Clamping (Max) @ Ipp	14.5	V
Current - Peak Pulse (10/1000µs)	103	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

Substitute parts for the 1.5KE10A-T are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - Reverse Standoff (Typ): 8.55V
Voltage - Breakdown (Min): 9.5V
Voltage - Clamping (Max) @ Ipp: 14.5V
Current - Peak Pulse (10/1000µs): 103A (±5% tolerance acceptable)
Power - Peak Pulse: 1500W
Operating Temperature Range: -55°C to 175°C (TJ)
Mounting Type: Through Hole
Package / Case: DO-201AA, DO-27, or Axial equivalent
Type: Zener, Unidirectional (1 channel)

Compliance Parameters:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts maintain identical electrical performance specifications and thermal operating range. Packaging variations (Cut Tape, Tape & Reel, Bulk) do not affect functional equivalence. Peak pulse current values within 103A ±5% range (98A to 108A) are acceptable substitutes. Automotive-grade variants with AEC-Q101 qualification provide enhanced reliability for demanding applications while maintaining electrical equivalence.

Parameter Comparison

Part Number	Manufacturer	Vwm (Typ) V	Vbr (Min) V	Vc (Max) @ Ipp V	Ipp A	Power W	Temp Range °C	Package	Status	Automotive Grade
1.5KE10A-T	Diodes Incorporated	8.55	9.5	14.5	103	1500	-55 to 175	DO-201AA	Obsolete	No
1.5KE10A	Taiwan Semiconductor Corporation	8.55	9.5	14.5	108	1500	-55 to 175	DO-201AA	Active	No
1.5KE10A-E3/54	Vishay General Semiconductor - Diodes Division	8.55	9.5	14.5	103	1500	-55 to 175	DO-201AA	Active	No
1.5KE10AHE3_A/C	Vishay General Semiconductor - Diodes Division	8.55	9.5	14.5	103	1500	-55 to 175	DO-201AA	Active	Yes (AEC-Q101)
1.5KE10AHE3_A/D	Vishay General Semiconductor - Diodes Division	8.55	9.5	14.5	103	1500	-55 to 175	DO-201AA	Active	Yes (AEC-Q101)
1N6271A-E3/54	Vishay General Semiconductor - Diodes Division	8.55	9.5	14.5	103	1500	-55 to 175	DO-201AA	Active	No
1N6271A-E3/73	Vishay General Semiconductor - Diodes Division	8.55	9.5	14.5	103	1500	-55 to 175	DO-201AA	Active	No
1N6271AHE3_A/C	Vishay General Semiconductor - Diodes Division	8.55	9.5	14.5	103	1500	-55 to 175	DO-201AA	Active	Yes (AEC-Q101)
1N6271AHE3_A/D	Vishay General Semiconductor - Diodes Division	8.55	9.5	14.5	103	1500	-55 to 175	DO-201AA	Active	Yes (AEC-Q101)
1V5KE10A	Taiwan Semiconductor Corporation	8.55	9.5	14.5	103	1500	-55 to 175	DO-201AD	Active	No
1.5KE10A-B	Littelfuse Inc.	8.55	9.5	14.5	104.8	1500	-55 to 175	DO-201AA	Active	No

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

1.5KE10A-E3/54 (Vishay) and 1N6271A-E3/54 (Vishay) are direct electrical equivalents with identical peak pulse current (103A) and active product status. These parts are suitable for standard general-purpose applications requiring immediate availability.

1.5KE10A (Taiwan Semiconductor Corporation) is an active substitute with peak pulse current of 108A, within acceptable tolerance range. This part offers strong inventory availability and active manufacturing status.

Automotive-Grade Substitutes (Enhanced Reliability):

1.5KE10AHE3_A/C, 1.5KE10AHE3_A/D, 1N6271AHE3_A/C, and 1N6271AHE3_A/D are AEC-Q101 qualified automotive-grade variants. These parts maintain identical electrical specifications while providing enhanced qualification for automotive and high-reliability applications. Selection of these variants is appropriate when design requirements specify automotive-grade components or enhanced reliability margins.

Alternative Package Variant:

1V5KE10A (Taiwan Semiconductor Corporation) provides electrical equivalence with DO-201AD package configuration instead of standard DO-201AA. This variant is suitable when DO-201AD package compatibility is required by board layout or assembly specifications.

Bulk Packaging Option:

1.5KE10A-B (Littelfuse Inc.) offers peak pulse current of 104.8A with bulk packaging. This variant is suitable for high-volume manufacturing environments where bulk packaging is preferred over tape and reel formats.

Frequently Asked Questions (FAQ)

Q: Can I substitute 1.5KE10A-T with any of the listed parts without circuit redesign?

A: Yes. All listed substitute parts maintain identical voltage specifications (8.55V reverse standoff, 9.5V breakdown minimum, 14.5V clamping maximum), operating temperature range (-55°C to 175°C), and through-hole mounting configuration. Peak pulse current values range from 103A to 108A, all within acceptable tolerance for this device class. No circuit redesign is required.

Q: What is the difference between standard and automotive-grade variants?

A: Automotive-grade variants (1.5KE10AHE3_A/C, 1.5KE10AHE3_A/D, 1N6271AHE3_A/C, 1N6271AHE3_A/D) carry AEC-Q101 qualification, indicating enhanced manufacturing controls and reliability testing. Electrical performance is identical to standard variants. Selection of automotive-grade parts is appropriate for applications requiring automotive qualification or enhanced reliability assurance.

Q: Are packaging format differences (Cut Tape, Tape & Reel, Bulk) functionally significant?

A: No. Packaging format differences affect only procurement and assembly logistics. Cut Tape, Tape & Reel, and Bulk packaging contain electrically identical components. Selection should be based on manufacturing process requirements and inventory management practices.

Q: Why is the original 1.5KE10A-T listed as obsolete?

A: The 1.5KE10A-T is classified as obsolete by Diodes Incorporated. Active substitute parts from Vishay, Taiwan Semiconductor Corporation, and Littelfuse Inc. provide identical electrical performance and are currently in production. Migration to active substitute parts ensures long-term design support and supply chain continuity.

Q: Can I use 1V5KE10A if my board layout requires DO-201AD package?

A: Yes. The 1V5KE10A is electrically equivalent with DO-201AD package configuration. Verify that your board layout and assembly process accommodate DO-201AD package dimensions before implementation.

Q: What is the significance of the peak pulse current variation (103A to 108A)?

A: Peak pulse current values within this range (103A to 108A) represent normal manufacturing tolerance across different manufacturers. All values meet the 1500W peak pulse power specification and are functionally equivalent for circuit protection applications. Selection can be based on availability and procurement preference.

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