SMCJ16HE3/9AT Equivalent & Substitute Parts

Part Overview

The SMCJ16HE3/9AT is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for surface mount applications in the DO-214AB (SMC) package. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts that maintain electrical and mechanical compatibility for new designs and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	SMCJ16HE3/9AT
Manufacturer	Vishay General Semiconductor - Diodes Division
Category	Transient Voltage Suppressors (TVS)
Package / Case	DO-214AB, SMC
Type	Zener
Unidirectional Channels	1
Voltage - Reverse Standoff (Typ)	16V
Voltage - Breakdown (Min)	17.8V
Voltage - Clamping (Max) @ Ipp	28.8V
Current - Peak Pulse (10/1000µs)	52.1A
Power - Peak Pulse	1500W (1.5kW)
Operating Temperature	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the SMCJ16HE3/9AT is determined by the following critical parameters:

Electrical Compatibility Requirements:

Voltage - Reverse Standoff (Typ): 16V
Voltage - Breakdown (Min): 17.8V
Unidirectional Channels: 1
Type: Zener

Mechanical Compatibility Requirements:

Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount

Environmental & Compliance Requirements:

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

Substitute parts are grouped into two categories based on electrical performance characteristics:

Category A - Direct Electrical Equivalents (Clamping Voltage 28.8V):

SMCJ16E3/TR13 (Microchip Technology): Maintains identical clamping voltage and peak pulse current specifications with active product status.

Category B - Functional Equivalents (Clamping Voltage 26V, Higher Peak Pulse Current):

SMCJ16A (EVVO Semi)
SMCJ16A-13-F (Diodes Incorporated)
SMCJ16A-HR (Littelfuse Inc.)
SMCJ16A-HRA (Littelfuse Inc.)
SMCJ16A-HRAT7 (Littelfuse Inc.)
SMCJ16A-TP (Micro Commercial Co)
SMCJ16AE3/TR13 (Microchip Technology)
SMDJ16A (Alpha & Omega Semiconductor Inc.)

These parts share the same reverse standoff voltage (16V) and breakdown voltage (17.8V) but feature reduced clamping voltage (26V) and varying peak pulse current ratings. SMDJ16A provides significantly higher peak pulse current (115.4A) and power dissipation (3000W).

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package / Case	Product Status
SMCJ16HE3/9AT	Vishay General Semiconductor - Diodes Division	16V	17.8V	28.8V	52.1A	1500W	-55°C ~ 150°C	DO-214AB, SMC	Obsolete
SMCJ16E3/TR13	Microchip Technology	16V	17.8V	28.8V	52.1A	1500W	-65°C ~ 150°C	DO-214AB, SMC	Active
SMCJ16A	EVVO Semi	16V	17.8V	26V	57.7A	600W	-65°C ~ 150°C	DO-214AC, SMA	Active
SMCJ16A-13-F	Diodes Incorporated	16V	17.8V	26V	57.7A	1500W	-55°C ~ 150°C	DO-214AB, SMC	Active
SMCJ16A-HR	Littelfuse Inc.	16V	17.8V	26V	57.7A	1500W	-65°C ~ 150°C	DO-214AB, SMC	Active
SMCJ16A-HRA	Littelfuse Inc.	16V	17.8V	26V	57.7A	1500W	-65°C ~ 150°C	DO-214AB, SMC	Active
SMCJ16A-HRAT7	Littelfuse Inc.	16V	17.8V	26V	57.7A	1500W	-65°C ~ 150°C	DO-214AB, SMC	Active
SMCJ16A-TP	Micro Commercial Co	16V	17.8V	26V	57.7A	1500W	-55°C ~ 175°C	DO-214AB, SMC	Active
SMCJ16AE3/TR13	Microchip Technology	16V	17.8V	26V	57.7A	1500W	-65°C ~ 150°C	DO-214AB, SMC	Active
SMDJ16A	Alpha & Omega Semiconductor Inc.	16V	17.8V	26V	115.4A	3000W	-55°C ~ 150°C	DO-214AB, SMC	Active

Engineering Selection Recommendations

Primary Selection - Direct Electrical Equivalent:

SMCJ16E3/TR13 (Microchip Technology) is the recommended direct replacement for SMCJ16HE3/9AT. This part maintains identical electrical specifications (28.8V clamping voltage, 52.1A peak pulse current, 1500W power dissipation) while offering active product status and extended lower operating temperature range (-65°C vs. -55°C). Both parts are ROHS3 compliant with MSL 1 rating and utilize the DO-214AB SMC package.

Secondary Selection - Functional Equivalents with Enhanced Performance:

For applications where clamping voltage tolerance permits, the following active parts provide equivalent or enhanced protection:

SMCJ16A-13-F (Diodes Incorporated): Maintains 1500W power dissipation and DO-214AB SMC package with -55°C lower temperature limit matching the original part.
SMCJ16A-HR, SMCJ16A-HRA (Littelfuse Inc.): Both offer extended temperature range (-65°C) and 1500W power rating in DO-214AB SMC package with established SMCJ-HR and SMCJ-HRA series designations.
SMCJ16A-TP (Micro Commercial Co): Provides extended upper temperature rating (-55°C ~ 175°C) with 1500W power dissipation in DO-214AB SMC package.
SMCJ16AE3/TR13 (Microchip Technology): Offers extended lower temperature range (-65°C) with 1500W power dissipation in DO-214AB SMC package.

High-Power Alternative:

SMDJ16A (Alpha & Omega Semiconductor Inc.) is suitable for applications requiring significantly higher peak pulse current (115.4A) and power dissipation (3000W) while maintaining the same reverse standoff voltage and breakdown characteristics. This part uses the DO-214AB SMC package.

All recommended substitutes are ROHS3 compliant with MSL 1 rating and active product status.

Frequently Asked Questions (FAQ)

Q: Can SMCJ16E3/TR13 be used as a direct replacement for SMCJ16HE3/9AT?

A: Yes. SMCJ16E3/TR13 maintains identical electrical specifications including 16V reverse standoff voltage, 17.8V breakdown voltage, 28.8V clamping voltage, 52.1A peak pulse current, and 1500W power dissipation. Both parts use the DO-214AB SMC package and are ROHS3 compliant with MSL 1 rating. The primary difference is product status (active vs. obsolete) and extended lower operating temperature range on the substitute.

Q: What is the difference between Category A and Category B substitutes?

A: Category A (SMCJ16E3/TR13) maintains the original 28.8V clamping voltage specification. Category B substitutes feature 26V clamping voltage, which is lower than the original part. This difference affects transient voltage suppression characteristics. Category B parts are suitable only if circuit design permits the lower clamping voltage threshold.

Q: Why does SMDJ16A have different peak pulse current and power ratings?

A: SMDJ16A is designed for higher-power applications. While it maintains the same reverse standoff voltage (16V) and breakdown voltage (17.8V) as the original part, it provides 115.4A peak pulse current and 3000W power dissipation compared to 52.1A and 1500W in the original. This part is suitable for circuits requiring enhanced transient protection capability.

Q: Are all substitute parts available in the same package?

A: Most substitutes use the DO-214AB SMC package matching the original part. Exception: SMCJ16A (EVVO Semi) uses DO-214AC SMA package, which has different mechanical dimensions. Verify PCB footprint compatibility before selection.

Q: What is the significance of the temperature range differences?

A: The original SMCJ16HE3/9AT operates from -55°C to 150°C. Several substitutes extend the lower temperature limit to -65°C, providing broader environmental compatibility. SMCJ16A-TP extends the upper limit to 175°C. Select based on application thermal requirements.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental compliance profile.

Q: What packaging formats are available for these substitutes?

A: Most substitutes are supplied in Tape & Reel (TR) format. SMCJ16A (EVVO Semi) is available in Cut Tape (CT) & Digi-Reel® format. Verify packaging requirements for automated assembly processes.

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