3KASMC16AHE3_A/I Transient Voltage Suppressor Diode – Equivalent & Substitute Parts

Part Overview

The 3KASMC16AHE3_A/I is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor – Diodes Division in the PAR® series. This surface mount component operates in the DO-214AB (SMC) package and is designed for transient overvoltage protection applications. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage – Reverse Standoff (Typ)	16V
Voltage – Breakdown (Min)	17.8V
Voltage – Clamping (Max) @ Ipp	26V
Current – Peak Pulse (10/1000µs)	115A
Power – Peak Pulse	3000W (3kW)
Operating Temperature Range	–65°C to 185°C (TJ)
Package / Case	DO-214AB, SMC
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Grade	Automotive
Qualification	AEC-Q101

Substitute Part Grouping Explanation

Substitution of the 3KASMC16AHE3_A/I is determined by the following electrical and mechanical parameters:

Voltage – Reverse Standoff: 16V (required match)
Voltage – Breakdown (Min): 17.8V (required match)
Voltage – Clamping (Max) @ Ipp: 26V (required match)
Current – Peak Pulse (10/1000µs): 115A minimum
Power – Peak Pulse: 3000W minimum
Package / Case: DO-214AB, SMC (mechanical compatibility)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Substitute parts are grouped into two categories:

Category 1: Direct Electrical & Mechanical Equivalents (115A Peak Pulse) Parts that maintain the original 115A peak pulse current specification and 3000W power rating with identical voltage parameters and DO-214AB SMC packaging.

Category 2: Enhanced Performance Substitutes (Higher Peak Pulse Current) Parts that exceed the original 115A specification with higher peak pulse current ratings (193A) and increased power dissipation (5000W), maintaining all voltage parameters and compatible packaging.

Category 3: Reduced Performance Substitutes (Lower Peak Pulse Current) Parts that operate below the original 115A specification with reduced peak pulse current (57.7A) and lower power ratings (600W to 1500W), maintaining voltage parameters but with different package options (DO-214AC SMA or DO-214AB SMC).

Parameter Comparison

Part Number	Manufacturer	Voltage – Reverse Standoff (Typ)	Voltage – Breakdown (Min)	Voltage – Clamping (Max) @ Ipp	Current – Peak Pulse (10/1000µs)	Power – Peak Pulse	Package / Case	Operating Temperature	Product Status
3KASMC16AHE3_A/I	Vishay General Semiconductor	16V	17.8V	26V	115A	3000W	DO-214AB, SMC	–65°C to 185°C	Obsolete
3KASMC16AHE3_B/I	Vishay General Semiconductor	16V	17.8V	26V	115A	3000W	DO-214AB, SMC	–65°C to 185°C	Active
SMC30J16A	STMicroelectronics	16V	17.8V	26V	115A	3000W	DO-214AB, SMC	–55°C to 175°C	Active
5.0SMDJ16A	Taiwan Semiconductor Corporation	16V	17.8V	26V	193A	5000W	DO-214AB, SMC	–55°C to 175°C	Active
SMCJ16A	EVVO Semi	16V	17.8V	26V	57.7A	600W	DO-214AC, SMA	–65°C to 150°C	Active
SMCJ16A-HR	Littelfuse Inc.	16V	17.8V	26V	57.7A	1500W	DO-214AB, SMC	–65°C to 150°C	Active
SMCJ16A-HRA	Littelfuse Inc.	16V	17.8V	26V	57.7A	1500W	DO-214AB, SMC	–65°C to 150°C	Active
SMCJ16A-HRAT7	Littelfuse Inc.	16V	17.8V	26V	57.7A	1500W	DO-214AB, SMC	–65°C to 150°C	Active
SMCJ16A-TP	Micro Commercial Co	16V	17.8V	26V	57.7A	1500W	DO-214AB, SMC	–55°C to 175°C	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): The 3KASMC16AHE3_B/I from Vishay General Semiconductor is the primary direct substitute. Both parts share identical electrical parameters (16V standoff, 17.8V breakdown, 26V clamping, 115A peak pulse, 3000W power), identical packaging (DO-214AB SMC), and both carry ROHS3 compliance. The _B/I variant is active in production, addressing the obsolescence of the original _A/I part.

For Enhanced Performance Applications: The 5.0SMDJ16A from Taiwan Semiconductor Corporation provides increased peak pulse current (193A) and power dissipation (5000W) while maintaining all voltage specifications and DO-214AB SMC packaging. This part is suitable for applications requiring higher transient energy absorption. Operating temperature range is –55°C to 175°C.

For Reduced Power Applications: The SMCJ16A-HR, SMCJ16A-HRA, and SMCJ16A-HRAT7 from Littelfuse Inc., and SMCJ16A-TP from Micro Commercial Co maintain voltage specifications with reduced peak pulse current (57.7A) and lower power ratings (1500W). These parts are suitable for lower-energy transient protection. All maintain DO-214AB SMC packaging except EVVO Semi's SMCJ16A, which uses DO-214AC SMA packaging.

Compliance Considerations: All substitute parts listed are ROHS3 compliant. The original part carries automotive grade qualification (AEC-Q101). Substitutes from Littelfuse and Micro Commercial Co maintain active product status with established supply chains.

Frequently Asked Questions (FAQ)

Q: Can I use 3KASMC16AHE3_B/I as a direct replacement for 3KASMC16AHE3_A/I? A: Yes. Both parts are electrically and mechanically identical with matching voltage parameters (16V standoff, 17.8V breakdown, 26V clamping), peak pulse current (115A), power rating (3000W), and packaging (DO-214AB SMC). The _B/I variant is active in production.

Q: What is the difference between the substitute parts listed? A: Substitutes differ primarily in peak pulse current and power dissipation ratings. The 5.0SMDJ16A provides enhanced performance (193A, 5000W). The SMCJ16A variants from Littelfuse and Micro Commercial Co provide reduced performance (57.7A, 1500W or 600W). All maintain the required voltage specifications.

Q: Can I use a part with lower peak pulse current (57.7A) instead of 115A? A: Lower peak pulse current parts are suitable only if your application's transient energy requirements do not exceed their specifications. The 57.7A parts are rated for 600W to 1500W peak pulse power, compared to the original 3000W rating.

Q: Can I use a part with higher peak pulse current (193A) instead of 115A? A: Yes. The 5.0SMDJ16A with 193A peak pulse and 5000W power rating provides enhanced protection margin and is electrically compatible with all voltage specifications.

Q: Are there package compatibility concerns? A: Most substitutes use DO-214AB SMC packaging, matching the original part. The EVVO Semi SMCJ16A uses DO-214AC SMA packaging, which is physically smaller and requires PCB layout verification before substitution.

Q: What is the operating temperature difference between substitutes? A: The original part operates –65°C to 185°C. Most substitutes operate –55°C to 175°C or –65°C to 150°C. Verify your application's temperature requirements before selection.

Q: Are all substitutes ROHS3 compliant? A: Yes. All substitute parts listed carry ROHS3 compliance status.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message