3KASMC13AHE3_A/I Transient Voltage Suppressor Diode - Equivalent & Substitute Parts

Part Overview

The 3KASMC13AHE3_A/I is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, classified as obsolete. This component operates in the PAR® series and is designed for surface mount applications in the DO-214AB (SMC) package. The part is rated for automotive applications with AEC-Q101 qualification and operates across a temperature range of -65°C to 185°C. Due to its obsolete status, equivalent substitute parts with active product status are necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	13V
Voltage - Breakdown (Min)	14.4V
Voltage - Clamping (Max) @ Ipp	21.5V
Current - Peak Pulse (10/1000µs)	140A
Power - Peak Pulse	3000W (3kW)
Operating Temperature Range	-65°C ~ 185°C (TJ)
Package / Case	DO-214AB, SMC
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 3KASMC13AHE3_A/I is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 13V
Voltage - Breakdown (Min): 14.4V
Voltage - Clamping (Max) @ Ipp: 21.5V
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts must maintain identical voltage specifications (13V standoff, 14.4V minimum breakdown, 21.5V maximum clamping) and package configuration to ensure direct functional replacement. Current rating and power dissipation may vary based on specific application requirements, provided the part meets minimum electrical specifications. All substitutes must maintain surface mount compatibility and RoHS3 compliance.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package
3KASMC13AHE3_A/I	Vishay General Semiconductor - Diodes Division	Obsolete	13V	14.4V	21.5V	140A	3000W	-65°C ~ 185°C	DO-214AB (SMCJ)
3KASMC13AHE3_B/I	Vishay General Semiconductor - Diodes Division	Active	13V	14.4V	21.5V	140A	3000W	-65°C ~ 185°C	DO-214AB (SMC)
SMC30J13A	STMicroelectronics	Active	13V	14.4V	21.5V	140A	3000W	-55°C ~ 175°C	DO-214AB (SMC)
5.0SMDJ13A	MDE Semiconductor Inc	Active	13V	14.4V	21.5V	233A	5000W	-55°C ~ 150°C	DO-214AB (SMCJ)
SMCJ13A	ANBON SEMICONDUCTOR (INT'L) LIMITED	Active	13V	14.4V	21.5V	69.7A	1500W	-55°C ~ 150°C	DO-214AB (SMC)
SMCJ13A-HR	Littelfuse Inc.	Active	13V	14.4V	21.5V	69.8A	1500W	-65°C ~ 150°C	DO-214AB (SMCJ)
SMCJ13A-HRA	Littelfuse Inc.	Active	13V	14.4V	21.5V	69.8A	1500W	-65°C ~ 150°C	DO-214AB (SMCJ)
SMCJ13A-HRAT7	Littelfuse Inc.	Active	13V	14.4V	21.5V	69.8A	1500W	-65°C ~ 150°C	DO-214AB (SMCJ)
SMCJ13A-TP	Micro Commercial Co	Active	13V	14.4V	21.5V	69.8A	1500W	-55°C ~ 175°C	DO-214AB (SMC)

Engineering Selection Recommendations

For direct replacement of the obsolete 3KASMC13AHE3_A/I, the 3KASMC13AHE3_B/I from Vishay General Semiconductor - Diodes Division is the primary equivalent. This part maintains identical electrical specifications, temperature range (-65°C to 185°C), and current/power ratings (140A, 3000W), with the only difference being active product status and packaging format (Tape & Reel). Both parts carry AEC-Q101 automotive qualification and ROHS3 compliance.

For applications where the full 140A peak pulse current and 3000W power dissipation are required, the SMC30J13A from STMicroelectronics provides equivalent performance with active status. This part operates within a slightly reduced temperature range (-55°C to 175°C) but maintains all critical voltage parameters and current specifications.

For applications with reduced current requirements (below 140A), the SMCJ13A series from Littelfuse Inc. (SMCJ13A-HR, SMCJ13A-HRA, SMCJ13A-HRAT7) and Micro Commercial Co (SMCJ13A-TP) offer active alternatives with 69.8A peak pulse current and 1500W power dissipation. Littelfuse variants maintain the extended temperature range (-65°C to 150°C), while the Micro Commercial Co variant operates from -55°C to 175°C.

The 5.0SMDJ13A from MDE Semiconductor Inc provides enhanced current handling (233A) and power dissipation (5000W) for high-stress applications, though with a reduced upper temperature limit (-55°C to 150°C).

Frequently Asked Questions (FAQ)

Q: Can I use SMCJ13A-TP as a direct replacement for 3KASMC13AHE3_A/I?

A: Yes, SMCJ13A-TP is electrically compatible. It maintains the required 13V standoff voltage, 14.4V minimum breakdown voltage, and 21.5V maximum clamping voltage. The part operates at 69.8A peak pulse current versus the original 140A, making it suitable for applications not requiring the full current capacity. Operating temperature range is -55°C to 175°C compared to the original -65°C to 185°C.

Q: What is the difference between SMCJ13A-HR, SMCJ13A-HRA, and SMCJ13A-HRAT7?

A: All three Littelfuse variants maintain identical electrical specifications (13V standoff, 21.5V clamping, 69.8A peak pulse, 1500W power). The designations reflect different packaging and tape configurations. Selection depends on procurement and assembly requirements rather than electrical performance.

Q: Is the 5.0SMDJ13A suitable for automotive applications?

A: The 5.0SMDJ13A from MDE Semiconductor Inc maintains the required voltage specifications and RoHS3 compliance. However, it operates within a reduced temperature range (-55°C to 150°C) compared to the original part (-65°C to 185°C). Suitability depends on specific application temperature requirements and whether automotive qualification is mandated by design specifications.

Q: Why do substitute parts have different current ratings?

A: Peak pulse current and power dissipation ratings reflect the physical and thermal characteristics of each manufacturer's design. All listed substitutes maintain the critical voltage parameters (13V standoff, 21.5V clamping) that determine transient suppression performance. Selection of current rating depends on the specific transient energy levels in the application circuit.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original part specifications.

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