SMCJ54C-E3/9AT Equivalent & Substitute Parts

Part Overview

The SMCJ54C-E3/9AT is a bidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for general-purpose overvoltage protection in surface-mount applications. This part operates with a 54V reverse standoff voltage and provides 96.3V clamping at peak pulse current. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	SMCJ54C-E3/9AT
Manufacturer	Vishay General Semiconductor - Diodes Division
Category	Transient Voltage Suppressors (TVS)
Product Status	Obsolete
Type	Zener
Bidirectional Channels	1
Voltage - Reverse Standoff (Typ)	54V
Voltage - Breakdown (Min)	60V
Voltage - Clamping (Max) @ Ipp	96.3V
Current - Peak Pulse (10/1000µs)	15.6A
Power - Peak Pulse	1500W (1.5kW)
Mounting Type	Surface Mount
Package / Case	DO-214AB, SMC
Operating Temperature	-55°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the SMCJ54C-E3/9AT is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 54V
Voltage - Breakdown (Min): 60V
Mounting Type: Surface Mount
Package / Case: DO-214AB, SMC
Bidirectional Channels: 1
Type: Zener

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

Category A: Matched Clamping Voltage (96.3V) Parts with identical clamping voltage specifications maintain the exact same transient suppression characteristics as the original part.

Category B: Lower Clamping Voltage (87.1V) Parts with 87.1V clamping voltage provide reduced clamping performance but maintain the same reverse standoff voltage and package compatibility. These parts are suitable for applications where lower clamping voltage is acceptable.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package / Case	Operating Temperature
SMCJ54C-E3/9AT	Vishay General Semiconductor - Diodes Division	Obsolete	54V	96.3V	15.6A	1500W	DO-214AB, SMC	-55°C ~ 150°C
SMCJ54CA-E3/9AT	Vishay General Semiconductor - Diodes Division	Active	54V	87.1V	17.2A	1500W	DO-214AB, SMC	-55°C ~ 150°C
SMCJ54CE3/TR13	Microchip Technology	Active	54V	96.3V	15.6A	1500W	DO-214AB, SMC	-65°C ~ 150°C
5.0SMDJ54CA	MDE Semiconductor Inc	Active	54V	87.1V	57.5A	5000W	DO-214AB, SMC	-55°C ~ 150°C
SMCJ54CA	Meritek	Active	54V	87.1V	17.22A	1500W	DO-214AB, SMC	-55°C ~ 150°C
SMCJ54CA-13-F	Diodes Incorporated	Active	54V	87.1V	17.2A	1500W	DO-214AB, SMC	-55°C ~ 150°C
SMCJ54CA-TP	Micro Commercial Co	Active	54V	87.1V	17.3A	1500W	DO-214AB, SMC	-55°C ~ 175°C
SMCJ54CAE3/TR13	Microchip Technology	Active	54V	87.1V	17.2A	1500W	DO-214AB, SMC	-65°C ~ 150°C
SMDJ54CA	Alpha & Omega Semiconductor Inc.	Active	54V	87.1V	34.5A	3000W	DO-214AB, SMC	-55°C ~ 150°C
SMLJ54CE3/TR13	Microchip Technology	Active	54V	96.3V	31.2A	300W	DO-214AB, SMC	-55°C ~ 150°C

Engineering Selection Recommendations

Primary Substitutes (Matched Electrical Performance)

SMCJ54CE3/TR13 (Microchip Technology) and SMLJ54CE3/TR13 (Microchip Technology) maintain the 96.3V clamping voltage specification identical to the original SMCJ54C-E3/9AT. Both parts are active products with ROHS3 compliance and MSL 1 rating. SMCJ54CE3/TR13 provides equivalent current handling at 15.6A peak pulse, while SMLJ54CE3/TR13 offers higher current capacity at 31.2A. Selection between these depends on application current requirements.

Secondary Substitutes (Reduced Clamping Voltage)

SMCJ54CA-E3/9AT (Vishay General Semiconductor - Diodes Division), SMCJ54CA (Meritek), SMCJ54CA-13-F (Diodes Incorporated), SMCJ54CA-TP (Micro Commercial Co), and SMCJ54CAE3/TR13 (Microchip Technology) all feature 87.1V clamping voltage with active product status and ROHS3 compliance. These parts are suitable for applications where lower clamping voltage is acceptable. SMCJ54CA-TP extends the operating temperature range to -55°C ~ 175°C.

High-Performance Alternatives

5.0SMDJ54CA (MDE Semiconductor Inc) and SMDJ54CA (Alpha & Omega Semiconductor Inc.) provide enhanced current handling and power dissipation capabilities. 5.0SMDJ54CA delivers 57.5A peak pulse and 5000W power rating, while SMDJ54CA provides 34.5A peak pulse and 3000W power rating. Both maintain 87.1V clamping voltage and are suitable for applications requiring higher transient energy absorption.

All substitute parts maintain the DO-214AB (SMC) surface-mount package, ensuring mechanical and thermal compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with 87.1V clamping voltage instead of the original 96.3V specification?

A: Substitution with lower clamping voltage is possible only if your application circuit design permits the reduced clamping threshold. The 87.1V clamping voltage will suppress transients at a lower voltage level than the original 96.3V specification. Verify that downstream components can tolerate this lower clamping voltage without performance degradation or damage.

Q: What is the difference between SMCJ54CA-E3/9AT and SMCJ54CAE3/TR13?

A: Both parts share the same electrical specifications (54V reverse standoff, 87.1V clamping, 17.2A peak pulse). The primary difference is packaging: SMCJ54CA-E3/9AT uses standard packaging, while SMCJ54CAE3/TR13is supplied in Tape & Reel (TR) format. Additionally, SMCJ54CAE3/TR13 is manufactured by Microchip Technology and operates across -65°C ~ 150°C, compared to -55°C ~ 150°C for the Vishay part.

Q: Why does SMLJ54CE3/TR13 have lower power rating (300W) compared to other substitutes?

A: SMLJ54CE3/TR13 belongs to the SMLJ series, which is designed for lower power applications. Despite the 300W power rating, it maintains the 96.3V clamping voltage and 54V reverse standoff voltage. This part is suitable for circuits where transient energy levels are lower than the 1500W or higher-rated alternatives.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original SMCJ54C-E3/9AT specifications. This ensures environmental and regulatory compatibility across all alternatives.

Q: Can I use 5.0SMDJ54CA in place of the original part?

A: 5.0SMDJ54CA is electrically compatible with the original part in terms of reverse standoff voltage (54V) and package (DO-214AB, SMC). However, it features 87.1V clamping voltage instead of 96.3V, and provides significantly higher current handling (57.5A) and power dissipation (5000W). Use this part only if your application requires enhanced transient suppression capability and can tolerate the lower clamping voltage.

Q: What packaging options are available for substitutes?

A: Substitute parts are available in multiple packaging formats: standard packaging, Tape & Reel (TR) for automated assembly, and Cut Tape (CT) for manual handling. All maintain the DO-214AB (SMC) surface-mount package footprint, ensuring PCB compatibility. Select packaging based on your assembly process requirements.

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