SMCJ48AE3/TR13

Part Overview

The SMCJ48AE3/TR13 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, rated for 48V reverse standoff voltage with a 77.4V maximum clamping voltage. The device is packaged in surface-mount DO-214AB (SMC) format and is actively produced with ROHS3 compliance. Alternative models are sourced to provide design flexibility, expanded inventory availability across multiple manufacturers, and options for varying performance requirements within compatible electrical and mechanical parameters.

Key Parameters

Parameter	Value
Manufacturer Part Number	SMCJ48AE3/TR13
Manufacturer	Microchip Technology
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Package / Case	DO-214AB, SMC
Mounting Type	Surface Mount
Voltage - Reverse Standoff (Typ)	48V
Voltage - Breakdown (Min)	53.3V
Voltage - Clamping (Max) @ Ipp	77.4V
Current - Peak Pulse (10/1000µs)	19.4A
Power - Peak Pulse	1500W (1.5kW)
Operating Temperature	-65°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on electrical equivalency:

Direct Substitutes are functionally equivalent parts with identical electrical specifications across all critical protection parameters: 48V reverse standoff voltage, 53.3V minimum breakdown voltage, 77.4V maximum clamping voltage, and 19.4A peak pulse current. These components share the same DO-214AB (SMC) surface-mount package and are suitable for direct replacement in circuit designs. All direct substitutes maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Manufacturers include Diodes Incorporated, Vishay General Semiconductor - Diodes Division, and Micro Commercial Co.

Similar Substitutes maintain the same voltage ratings (48V reverse standoff, 53.3V breakdown minimum, 77.4V clamping maximum) and mechanical package (DO-214AB, SMC) but differ in peak pulse current or power dissipation ratings. These parts are suitable for applications where the higher or lower performance capability is acceptable within the design margin. The 1SMC48A TR13 (19.4A, 1500W) from Central Semiconductor Corp provides direct electrical equivalency with differing RoHS compliance status. The 3SMC48A TR13 PBFREE (38.8A, 3000W) from Central Semiconductor Corp offers double the current and power handling. The 5.0SMDJ48A from Taiwan Semiconductor Corporation provides significantly enhanced transient protection with 64.7A peak pulse current and 5000W power dissipation.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	RoHS Status	Product Status
SMCJ48AE3/TR13	Microchip Technology	48V	53.3V	77.4V	19.4A	1500W	-65°C ~ 150°C	ROHS3 Compliant	Active
SMCJ48A	MDD	48V	53.3V	77.4V	19.4A	1500W	-50°C ~ 150°C	ROHS3 Compliant	Active
SMCJ48A-13-F	Diodes Incorporated	48V	53.3V	77.4V	19.4A	1500W	-55°C ~ 150°C	ROHS3 Compliant	Active
SMCJ48A-E3/57T	Vishay General Semiconductor - Diodes Division	48V	53.3V	77.4V	19.4A	1500W	-55°C ~ 150°C	ROHS3 Compliant	Active
SMCJ48A-E3/9AT	Vishay General Semiconductor - Diodes Division	48V	53.3V	77.4V	19.4A	1500W	-55°C ~ 150°C	ROHS3 Compliant	Active
SMCJ48A-TP	Micro Commercial Co	48V	53.3V	77.4V	19.4A	1500W	-55°C ~ 175°C	ROHS3 Compliant	Active
1SMC48A TR13	Central Semiconductor Corp	48V	53.3V	77.4V	19.4A	1500W	-65°C ~ 150°C	RoHS non-compliant	Active
3SMC48A TR13 PBFREE	Central Semiconductor Corp	48V	53.3V	77.4V	38.8A	3000W	-65°C ~ 150°C	ROHS3 Compliant	Active
5.0SMDJ48A	Taiwan Semiconductor Corporation	48V	53.3V	77.4V	64.7A	5000W	-55°C ~ 175°C	ROHS3 Compliant	Active

Engineering Selection Recommendations

For Direct Replacement: The SMCJ48A-E3/57T and SMCJ48A-E3/9AT from Vishay General Semiconductor - Diodes Division provide identical electrical specifications with ROHS3 compliance and active product status. The SMCJ48A-13-F from Diodes Incorporated and SMCJ48A-TP from Micro Commercial Co are fully equivalent alternatives. All direct substitutes maintain the 48V/53.3V/77.4V voltage rating with 19.4A peak pulse current and 1500W power dissipation.

For Extended Temperature Range: The SMCJ48A-TP from Micro Commercial Co extends the upper operating temperature limit to 175°C, compared to the standard 150°C specification of the primary device. The 5.0SMDJ48A similarly provides -55°C to 175°C operating range.

For Enhanced Transient Protection: When higher transient current absorption is required, the 3SMC48A TR13 PBFREE doubles the peak pulse current to 38.8A and power dissipation to 3000W while maintaining the same voltage ratings. The 5.0SMDJ48A provides the highest transient protection capability with 64.7A peak pulse current and 5000W power dissipation.

Compliance Considerations: All recommended direct substitutes maintain ROHS3 compliance and active product status. The 1SMC48A TR13 from Central Semiconductor Corp is electrically equivalent but is RoHS non-compliant and should be selected only when legacy or non-regulated application requirements apply.

Frequently Asked Questions (FAQ)

Q: Can SMCJ48A-E3/57T be used as a drop-in replacement for SMCJ48AE3/TR13? A: Yes. Both devices share identical voltage ratings (48V reverse standoff, 53.3V breakdown minimum, 77.4V clamping maximum), peak pulse current (19.4A), power dissipation (1500W), and surface-mount DO-214AB (SMC) package. ROHS3 compliance and active product status are maintained.

Q: What is the difference between direct substitutes and similar substitutes? A: Direct substitutes maintain identical electrical specifications across voltage and current ratings. Similar substitutes maintain the same voltage protection levels and package but offer different peak pulse current or power handling capabilities. Selection depends on application transient stress requirements.

Q: Can 3SMC48A TR13 PBFREE replace SMCJ48AE3/TR13 in existing designs? A: Electrical substitution is valid for designs where the enhanced peak pulse current (38.8A versus 19.4A) and higher power dissipation (3000W versus 1500W) are acceptable. The voltage ratings remain identical. Thermal design review is recommended due to higher power handling capability.

Q: Is operating temperature range a critical substitution parameter? A: Operating temperature compatibility must be verified against design requirements. The primary device is rated -65°C to 150°C. Alternatives range from -50°C to 175°C. Selection should confirm the substitute temperature range meets or exceeds application environmental specifications.

Q: Does package compatibility require circuit board redesign? A: No. All listed substitutes use the DO-214AB (SMC) surface-mount package and are compatible with existing surface-mount assembly processes and printed circuit board layouts.

Q: What inventory advantages do substitute parts provide? A: The SMCJ48A from MDD offers the highest available inventory (16,125 units), followed by SMCJ48A-E3/57T from Vishay (19,151 units). Multiple manufacturer sourcing reduces supply chain risk when primary device availability is limited.

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