SMCJ54AE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMCJ54AE3/TR13 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This surface-mount component operates in the 54V reverse standoff voltage class with a maximum clamping voltage of 87.1V and peak pulse current of 17.2A. The part is Active status and RoHS3 compliant, making it suitable for modern electronic circuit protection requirements. Equivalent and substitute parts are identified based on matching electrical parameters, package compatibility, and operational specifications within the DO-214AB (SMC) form factor.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	54	V
Voltage - Breakdown (Min)	60	V
Voltage - Clamping (Max) @ Ipp	87.1	V
Current - Peak Pulse (10/1000µs)	17.2	A
Power - Peak Pulse	1500	W
Operating Temperature Range	-65°C to 150°C	TJ
Mounting Type	Surface Mount	—
Package / Case	DO-214AB, SMC	—
Type	Zener	—
Unidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SMCJ54AE3/TR13 are classified into two categories based on electrical parameter alignment:

Direct Equivalents (1500W Power Class): Parts maintaining identical or near-identical electrical specifications including 54V reverse standoff voltage, 87.1V maximum clamping voltage, and 1500W peak pulse power rating. These parts are functionally interchangeable with the main part within the same circuit protection application. Direct equivalents include SMCJ54A (Meritek), SMCJ54A-13-F (Diodes Incorporated), and SMCJ54A-E3/57T (Vishay General Semiconductor).

Similar Parts (Higher Power Ratings): Parts sharing the same voltage class (54V standoff, 87.1V clamping) but with elevated peak pulse current and power dissipation capabilities. These include 5.0SMDJ54A (5000W class), SMDJ54A (3000W class), and their manufacturer variants. These parts provide enhanced transient energy absorption while maintaining voltage regulation within the same operating window.

Substitution Criteria:

Voltage - Reverse Standoff (Typ): 54V
Voltage - Clamping (Max) @ Ipp: 87.1V
Package / Case: DO-214AB, SMC
Type: Zener, Unidirectional
Unidirectional Channels: 1
RoHS Status: ROHS3 Compliant

Parameter Comparison

Part Number	Manufacturer	Standoff Voltage (V)	Clamping Voltage (V)	Peak Pulse Current (A)	Peak Pulse Power (W)	Operating Temp (°C)	Package	Status
SMCJ54AE3/TR13	Microchip Technology	54	87.1	17.2	1500	-65 to 150	DO-214AB, SMC	Active
SMCJ54A	Meritek	54	87.1	17.22	1500	-55 to 150	DO-214AB, SMC	Active
SMCJ54A-13-F	Diodes Incorporated	54	87.1	17.2	1500	-55 to 150	DO-214AB, SMC	Active
SMCJ54A-E3/57T	Vishay General Semiconductor	54	87.1	17.2	1500	-55 to 150	DO-214AB, SMC	Active
5.0SMDJ54A	Taiwan Semiconductor Corporation	54	87.1	57.5	5000	-55 to 175	DO-214AB, SMC	Active
5.0SMDJ54A-T7	Littelfuse	54	87.1	57.5	5000	-65 to 150	DO-214AB, SMC	Active
SMCJ54A-TP	Micro Commercial Co	54	87.1	17.3	1500	-55 to 175	DO-214AB, SMC	Active
SMDJ54A	Alpha & Omega Semiconductor Inc.	54	87.1	34.5	3000	-55 to 150	DO-214AB, SMC	Active
SMDJ54A-T7	Littelfuse Inc.	54	87.1	34.4	3000	-65 to 150	DO-214AB, SMC	Active

Engineering Selection Recommendations

For Direct Replacement (1500W Class):

Select SMCJ54A (Meritek), SMCJ54A-13-F (Diodes Incorporated), or SMCJ54A-E3/57T (Vishay General Semiconductor) when circuit design specifies 1500W peak pulse power dissipation and 17.2A peak pulse current. All direct equivalents maintain identical voltage regulation characteristics (54V standoff, 87.1V clamping) and are packaged in DO-214AB (SMC) form factor. All candidates are Active status and RoHS3 compliant. Operating temperature range varies between -55°C to 150°C (Meritek, Diodes Incorporated, Vishay) and -65°C to 150°C (Microchip original), with the original part offering extended low-temperature operation.

For Enhanced Protection (3000W Class):

SMDJ54A (Alpha & Omega Semiconductor) and SMDJ54A-T7 (Littelfuse) provide 3000W peak pulse power with 34.4–34.5A peak pulse current while maintaining identical voltage specifications. These parts are suitable for applications requiring higher transient energy absorption without circuit redesign. SMDJ54A-T7 supports -65°C to 150°C operating range, matching the original part's low-temperature capability.

For Maximum Protection (5000W Class):

5.0SMDJ54A (Taiwan Semiconductor Corporation) and 5.0SMDJ54A-T7 (Littelfuse) deliver 5000W peak pulse power with 57.5A peak pulse current. These parts are applicable to high-energy transient environments. 5.0SMDJ54A-T7 maintains -65°C to 150°C operating range. Selection of higher power-rated parts does not degrade circuit performance and provides design margin for transient suppression.

Compliance Verification:

All substitute parts are Active status, RoHS3 compliant, and REACH unaffected. Moisture Sensitivity Level (MSL) is 1 (Unlimited) across all candidates, indicating no special storage or handling requirements.

Frequently Asked Questions (FAQ)

Q: Can SMCJ54A (Meritek) directly replace SMCJ54AE3/TR13 (Microchip)?

A: Yes. Both parts share identical voltage specifications (54V standoff, 87.1V clamping), peak pulse current (17.2–17.22A), power rating (1500W), and DO-214AB (SMC) packaging. The primary difference is operating temperature range: Meritek operates -55°C to 150°C versus Microchip's -65°C to 150°C. For applications within -55°C to 150°C, direct substitution is valid.

Q: What is the difference between SMCJ54A and SMDJ54A?

A: Both maintain identical voltage regulation (54V standoff, 87.1V clamping) and DO-214AB packaging. SMDJ54A provides 3000W peak pulse power with 34.4–34.5A peak pulse current, compared to SMCJ54A's 1500W and 17.2A. SMDJ54A is suitable for higher transient energy applications.

Q: Can 5.0SMDJ54A replace SMCJ54AE3/TR13 in all applications?

A: 5.0SMDJ54A maintains identical voltage specifications and packaging but provides 5000W peak pulse power versus 1500W. Higher power rating does not cause circuit malfunction; it provides enhanced transient suppression capability. Selection depends on application transient energy requirements, not voltage regulation needs.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant and REACH unaffected, matching the original SMCJ54AE3/TR13 compliance status.

Q: What packaging options are available for these TVS diodes?

A: All substitute parts use DO-214AB (SMC) surface-mount packaging, identical to the original part. Tape & Reel (TR) packaging is available for specific part numbers (SMCJ54AE3/TR13, SMCJ54A-13-F, SMCJ54A-E3/57T, 5.0SMDJ54A-T7, SMCJ54A-TP, SMDJ54A-T7) for automated assembly applications.

Q: Does operating temperature range affect substitution suitability?

A: Operating temperature range affects suitability only if the application requires operation outside the substitute part's specified range. SMCJ54AE3/TR13 and certain substitutes (5.0SMDJ54A-T7, SMDJ54A-T7) support -65°C to 150°C. For applications limited to -55°C to 150°C, all substitutes are acceptable.

Q: What is the significance of peak pulse current (Ipp) differences?

A: Peak pulse current indicates the maximum transient current the TVS diode can conduct during a 10/1000µs pulse. Higher Ipp (34.5A for SMDJ54A, 57.5A for 5.0SMDJ54A) indicates greater transient energy absorption capability. Voltage clamping remains constant at 87.1V across all parts, ensuring consistent circuit protection.

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