SMCJ54CA-13 Transient Voltage Suppressor (TVS) Diode — Equivalent & Substitute Parts

Part Overview

The SMCJ54CA-13 is a unidirectional Zener-type transient voltage suppressor manufactured by Diodes Incorporated in DO-214AB (SMC) surface mount package. This component is designed for general-purpose overvoltage protection with a 54V reverse standoff voltage and 87.1V maximum clamping voltage. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active manufacturers.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	54V
Voltage - Breakdown (Min)	60V
Voltage - Clamping (Max) @ Ipp	87.1V
Current - Peak Pulse (10/1000µs)	17.2A
Power - Peak Pulse	1500W (1.5kW)
Package / Case	DO-214AB, SMC
Operating Temperature	-55°C ~ 150°C (TJ)
Type	Zener
Bidirectional Channels	1
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the SMCJ54CA-13 is determined by the following criteria:

Mandatory Matching Parameters:

Voltage - Reverse Standoff (Typ): 54V
Voltage - Breakdown (Min): 60V
Voltage - Clamping (Max) @ Ipp: 87.1V
Package / Case: DO-214AB (SMC)
Type: Zener
Bidirectional Channels: 1
Mounting Type: Surface Mount

Allowable Variation Parameters:

Current - Peak Pulse (10/1000µs): 17.2A or higher
Power - Peak Pulse: 1500W or higher
Operating Temperature: -55°C minimum to 150°C maximum or wider range
Product Status: Active preferred (discontinued parts unsuitable for new designs)
RoHS Compliance: ROHS3 Compliant preferred

Substitute parts meeting all mandatory parameters with equal or superior allowable variation parameters are electrically and mechanically compatible with the original SMCJ54CA-13.

Parameter Comparison

Part Number	Manufacturer	Vwm (Typ)	Vbr (Min)	Vc (Max)	Ipp (A)	Ppk (W)	Temp Range	Package	Status	RoHS
SMCJ54CA-13	Diodes Incorporated	54V	60V	87.1V	17.2A	1500W	-55°C ~ 150°C	DO-214AB (SMC)	Discontinued	Non-compliant
SMCJ54CA	Meritek	54V	60V	87.1V	17.22A	1500W	-55°C ~ 150°C	DO-214AB (SMC)	Active	ROHS3 Compliant
SMCJ54CA-TP	Micro Commercial Co	54V	60V	87.1V	17.3A	1500W	-55°C ~ 175°C	DO-214AB (SMC)	Active	ROHS3 Compliant
5.0SMDJ54CA	MDE Semiconductor Inc	54V	60V	87.1V	57.5A	5000W	-55°C ~ 150°C	DO-214AB (SMC)	Active	ROHS3 Compliant
5.0SMDJ54CA-T7	Littelfuse Inc.	54V	60V	87.1V	57.5A	5000W	-65°C ~ 150°C	DO-214AB (SMC)	Active	ROHS3 Compliant
SMDJ54CA	Alpha & Omega Semiconductor Inc.	54V	60V	87.1V	34.5A	3000W	-55°C ~ 150°C	DO-214AB (SMC)	Active	ROHS3 Compliant
SMLJ54CA	Bourns Inc.	54V	60V	87.1V	34.4A	3000W	-55°C ~ 150°C	DO-214AB (SMC)	Active	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts meet the mandatory electrical and mechanical parameters of the SMCJ54CA-13. Selection should prioritize the following factors:

Direct Replacement (Equivalent Performance): SMCJ54CA (Meritek) and SMCJ54CA-TP (Micro Commercial Co) provide equivalent current and power ratings to the original part. Both are active products with ROHS3 compliance. SMCJ54CA-TP offers extended operating temperature range to 175°C.

Enhanced Performance Alternatives: 5.0SMDJ54CA (MDE Semiconductor Inc) and 5.0SMDJ54CA-T7 (Littelfuse Inc.) provide 3.3× higher peak pulse current (57.5A) and 3.3× higher peak pulse power (5000W) while maintaining identical voltage specifications. These are suitable for applications requiring higher transient energy absorption. 5.0SMDJ54CA-T7 extends the lower operating temperature limit to -65°C.

Mid-Range Performance Alternatives: SMDJ54CA (Alpha & Omega Semiconductor Inc.) and SMLJ54CA (Bourns Inc.) provide 2× higher current and power ratings (34.4–34.5A, 3000W) compared to the original part, offering a balance between the base and enhanced performance options.

All substitute parts carry ROHS3 compliance, addressing regulatory requirements absent in the discontinued original part.

Frequently Asked Questions (FAQ)

Q: Can SMCJ54CA-13 be directly replaced with SMCJ54CA? A: Yes. SMCJ54CA from Meritek matches all mandatory electrical parameters (54V standoff, 87.1V clamping) and package specifications (DO-214AB SMC). The peak pulse current is marginally higher (17.22A vs. 17.2A), and the part is active with ROHS3 compliance.

Q: What is the difference between SMCJ54CA and 5.0SMDJ54CA? A: Both maintain identical voltage ratings (54V standoff, 87.1V clamping) and package form factor (DO-214AB SMC). The 5.0SMDJ series provides significantly higher current handling (57.5A vs. 17.22A) and power dissipation (5000W vs. 1500W). Selection depends on circuit transient energy requirements.

Q: Are all substitute parts in the same package? A: Yes. All listed substitutes use the DO-214AB (SMC) surface mount package, ensuring mechanical and footprint compatibility with the original SMCJ54CA-13.

Q: Which substitute offers the widest operating temperature range? A: 5.0SMDJ54CA-T7 from Littelfuse extends the lower temperature limit to -65°C (vs. -55°C standard), providing -65°C to 150°C operation. This is beneficial for applications in extreme cold environments.

Q: Are all substitutes RoHS compliant? A: Yes. All listed substitute parts carry ROHS3 compliance. The original SMCJ54CA-13 is RoHS non-compliant, making any active substitute an improvement for regulatory adherence.

Q: Can I use a higher-rated part (e.g., 5.0SMDJ54CA) as a drop-in replacement? A: Yes. Higher current and power ratings are allowable substitutions. The enhanced specifications provide superior transient protection without affecting circuit operation, provided the application does not impose constraints on component size or thermal characteristics.

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