TPSMC13AHE3_A/I Equivalent & Substitute Parts

Part Overview

The TPSMC13AHE3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is rated for 11.1V reverse standoff voltage with an 18.2V maximum clamping voltage and 82.4A peak pulse current in a surface mount DO-214AB (SMCJ) package. The part is qualified to AEC-Q101 automotive standards and operates across -65°C to 185°C junction temperature range. Currently listed as obsolete, equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production and field service applications.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	11.1	V
Voltage - Breakdown (Min)	12.4	V
Voltage - Clamping (Max) @ Ipp	18.2	V
Current - Peak Pulse (10/1000µs)	82.4	A
Power - Peak Pulse	1500	W
Operating Temperature Range	-65 to 185	°C (TJ)
Package / Case	DO-214AB, SMC	—
Type	Zener	—
Unidirectional Channels	1	—
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the TPSMC13AHE3_A/I is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 11.1V ± tolerance
Voltage - Clamping (Max) @ Ipp: 18.2V ± tolerance
Current - Peak Pulse (10/1000µs): 82.4A ± tolerance
Power - Peak Pulse: 1500W minimum
Package / Case: DO-214AB or SMC equivalent
Unidirectional Channels: 1
Type: Zener diode

Substitute parts are grouped into two categories:

Category 1: Direct Electrical & Mechanical Equivalents — Parts with identical or near-identical voltage ratings, clamping characteristics, peak pulse current, and package form factor. These parts maintain full functional compatibility with the original design.

Category 2: Manufacturer-Recommended Alternatives — Parts from alternative manufacturers that meet the same electrical specifications and package requirements, with active product status and automotive qualification where applicable.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package	Product Status	AEC-Q101
TPSMC13AHE3_A/I	Vishay	11.1V	18.2V	82.4A	1500W	-65 to 185°C	DO-214AB (SMCJ)	Obsolete	Yes
1.5SMC13A-E3/57T	Vishay	11.1V	18.2V	82.4A	1500W	-65 to 150°C	DO-214AB (SMCJ)	Active	No
TPSMC13AHE3_B/I	Vishay	11.1V	18.2V	82.4A	1500W	-65 to 185°C	DO-214AB (SMC)	Active	Yes
SM15T15AY	STMicroelectronics	12.8V	27.2V	368A (8/20µs)	1500W	-40 to 150°C	DO-214AB (SMC)	Active	Yes
SMCJ11A	Fairchild Semiconductor	11V	18.2V	82.5A	1500W	-55 to 150°C	DO-214AB (SMC)	Active	No
TPSMC13A	Littelfuse Inc.	11.1V	18.2V	83.5A	1500W	-55 to 150°C	DO-214AB (SMCJ)	Active	Yes

Engineering Selection Recommendations

Primary Recommendation: TPSMC13AHE3_B/I

The TPSMC13AHE3_B/I is the direct successor to the TPSMC13AHE3_A/I. Both parts are manufactured by Vishay, share identical electrical specifications (11.1V standoff, 18.2V clamping, 82.4A peak pulse), maintain the same -65°C to 185°C operating temperature range, and carry AEC-Q101 automotive qualification. The part is currently in active production status. The only difference is the supplier device package designation (SMC vs. SMCJ), which represents a packaging variant of the same DO-214AB form factor with no functional impact on circuit performance.

Secondary Recommendation: TPSMC13A (Littelfuse Inc.)

The TPSMC13A from Littelfuse meets all critical electrical parameters with 11.1V standoff voltage, 18.2V clamping voltage, and 83.5A peak pulse current (within tolerance of the original 82.4A specification). This part carries AEC-Q101 automotive qualification and is in active production. Operating temperature range is -55°C to 150°C, which is narrower than the original part but suitable for most automotive and industrial applications. The DO-214AB (SMCJ) package matches the original specification exactly.

Alternative Recommendation: SMCJ11A (Fairchild Semiconductor)

The SMCJ11A provides electrical compatibility with 11V standoff voltage, 18.2V clamping voltage, and 82.5A peak pulse current. This part is in active production with high inventory availability. Operating temperature range is -55°C to 150°C. AEC-Q101 qualification is not listed for this part; applications requiring automotive-grade components should prioritize TPSMC13AHE3_B/I or TPSMC13A instead.

Not Recommended for Direct Substitution: SM15T15AY (STMicroelectronics)

While the SM15T15AY is AEC-Q101 qualified and in active production, its electrical characteristics deviate significantly from the original specification. The 12.8V standoff voltage, 27.2V clamping voltage, and 368A peak pulse current represent a higher-rated device designed for different circuit protection requirements. This part should only be considered if circuit design parameters have been re-evaluated to accommodate higher voltage suppression levels.

Frequently Asked Questions (FAQ)

Q: Can I use TPSMC13AHE3_B/I as a direct replacement for TPSMC13AHE3_A/I?

A: Yes. Both parts are manufactured by Vishay with identical electrical specifications (11.1V standoff, 18.2V clamping, 82.4A peak pulse current), the same -65°C to 185°C operating temperature range, and AEC-Q101 automotive qualification. The package designation difference (SMC vs. SMCJ) is a supplier variant of the DO-214AB form factor with no functional impact.

Q: What is the difference between the SMCJ and SMC package designations?

A: Both designations refer to the DO-214AB surface mount package form factor. SMCJ and SMC are alternative naming conventions used by different manufacturers for the same physical package. The parts are mechanically and electrically interchangeable in circuit applications.

Q: Why is the operating temperature range different between substitute parts?

A: The TPSMC13AHE3_A/I operates to 185°C junction temperature, which is an extended automotive specification. Some substitute parts (1.5SMC13A-E3/57T, SMCJ11A, TPSMC13A) are rated to 150°C maximum. For applications requiring operation above 150°C, use TPSMC13AHE3_B/I, which maintains the full -65°C to 185°C range.

Q: Is AEC-Q101 qualification required for my application?

A: AEC-Q101 qualification is mandatory for automotive-grade applications and recommended for industrial applications subject to stringent reliability requirements. If your design requires automotive qualification, select from TPSMC13AHE3_B/I, TPSMC13A, or SM15T15AY. For general-purpose applications, SMCJ11A is acceptable.

Q: Can I substitute SM15T15AY for the original part?

A: SM15T15AY is not recommended as a direct substitute. While it shares the same 1500W peak pulse power rating and DO-214AB package, its electrical specifications differ significantly: 12.8V standoff (vs. 11.1V), 27.2V clamping (vs. 18.2V), and 368A peak pulse current (vs. 82.4A). Use SM15T15AY only if circuit design parameters have been re-evaluated to accommodate these higher voltage and current ratings.

Q: What inventory considerations should I account for?

A: TPSMC13AHE3_A/I is obsolete with 1053 units in stock. TPSMC13AHE3_B/I (1174 units) and TPSMC13A (8200 units) offer active production status with higher availability. SMCJ11A has the highest inventory at 12200 units. For long-term supply chain stability, prioritize parts with active product status.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message