SMBJ30E3/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ30E3/TR13 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This component operates with a 30V reverse standoff voltage and provides peak pulse power dissipation of 600W. The part is actively produced and RoHS3 compliant, with unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified based on matching electrical performance parameters and mechanical compatibility within the TVS diode category. Alternative sources and packaging configurations are available to support supply chain flexibility and application requirements.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	30	V
Voltage - Breakdown (Min)	33.3	V
Voltage - Clamping (Max) @ Ipp	53.5	V
Current - Peak Pulse (10/1000µs)	11.2	A
Power - Peak Pulse	600	W
Operating Temperature Range	-65 to 150	°C (TJ)
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Type	Zener	—
Unidirectional Channels	1	—

Substitute Part Grouping Explanation

Substitute parts for the SMBJ30E3/TR13 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - Reverse Standoff (Typ): 30V
Voltage - Breakdown (Min): 33.3V
Current - Peak Pulse (10/1000µs): 11.2A minimum
Power - Peak Pulse: 600W
Package / Case: DO-214AA or SMB
Mounting Type: Surface Mount
Type: Zener
Unidirectional Channels: 1

All identified substitute parts maintain the 30V reverse standoff voltage and 33.3V minimum breakdown voltage. Clamping voltage and peak pulse current specifications vary within acceptable ranges for general-purpose TVS applications. All substitutes are surface-mount Zener diodes in DO-214AA/SMB packages with single unidirectional channels and 600W peak pulse power rating.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (V)	Voltage - Breakdown Min (V)	Voltage - Clamping Max @ Ipp (V)	Current - Peak Pulse (A)	Power - Peak Pulse (W)	Operating Temperature (°C)	Package	RoHS Status
SMBJ30E3/TR13	Microchip Technology	30	33.3	53.5	11.2	600	-65 to 150	DO-214AA, SMB	ROHS3 Compliant
SMBJ30A	MDD	30	33.3	48.4	12.4	600	-55 to 150	DO-214AA, SMB	RoHS Compliant
SMBJ30A-13-F	Diodes Incorporated	30	33.3	48.4	12.4	600	-55 to 150	DO-214AA, SMB	ROHS3 Compliant
SMBJ30A-TP	Micro Commercial Co	30	33.3	48.4	12.4	600	-55 to 175	DO-214AA, SMB	ROHS3 Compliant
SMBJ30A-TR	STMicroelectronics	30	33.3	48.4	13	600	-55 to 150	DO-214AA, SMB	ROHS3 Compliant

Engineering Selection Recommendations

All identified substitute parts maintain active product status and comply with RoHS regulations. Selection among substitutes is determined by application-specific requirements and supply availability.

SMBJ30A (MDD): Provides equivalent electrical performance with 12.4A peak pulse current. Operating temperature range of -55°C to 150°C is suitable for standard industrial applications. RoHS compliance is confirmed.

SMBJ30A-13-F (Diodes Incorporated): Offers ROHS3 compliance with 12.4A peak pulse current and -55°C to 150°C operating range. Tape & Reel packaging supports automated assembly processes.

SMBJ30A-TP (Micro Commercial Co): Extends operating temperature to 175°C maximum junction temperature, providing enhanced thermal performance for high-temperature environments. ROHS3 compliant with Tape & Reel packaging.

SMBJ30A-TR (STMicroelectronics): Delivers 13A peak pulse current with ROHS3 compliance. Cut Tape and Digi-Reel packaging options support both manual and automated assembly workflows.

The SMBJ30E3/TR13 original part maintains the lowest operating temperature minimum (-65°C) and highest clamping voltage (53.5V), which may be critical for applications requiring extended low-temperature operation or lower clamping characteristics.

Frequently Asked Questions (FAQ)

Q: What determines if a part can substitute for the SMBJ30E3/TR13?

A: Substitute parts must maintain the 30V reverse standoff voltage, 33.3V minimum breakdown voltage, 600W peak pulse power rating, and surface-mount DO-214AA/SMB package configuration. Peak pulse current and clamping voltage may vary within the ranges specified for general-purpose TVS applications.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All substitute parts use the DO-214AA (SMB) package, which maintains identical mechanical dimensions and land pattern requirements. Direct board-level substitution is supported without PCB redesign.

Q: What is the difference between the clamping voltage specifications?

A: The SMBJ30E3/TR13 specifies a maximum clamping voltage of 53.5V at peak pulse current, while substitute parts specify 48.4V. Both values fall within acceptable ranges for general-purpose transient suppression. Application circuits must verify that the lower clamping voltage of substitute parts does not exceed downstream component voltage ratings.

Q: Do all substitute parts have the same operating temperature range?

A: No. The SMBJ30E3/TR13 operates from -65°C to 150°C, while most substitutes operate from -55°C to 150°C. The SMBJ30A-TP extends to 175°C. Applications requiring operation below -55°C must use the original SMBJ30E3/TR13 or verify substitute part suitability.

Q: Are all substitute parts RoHS3 compliant?

A: The SMBJ30E3/TR13, SMBJ30A-13-F, SMBJ30A-TP, and SMBJ30A-TR are ROHS3 compliant. The MDD SMBJ30A is RoHS compliant but not specifically designated as ROHS3. Regulatory requirements should be verified for your application.

Q: What packaging options are available for substitute parts?

A: The SMBJ30A-13-F, SMBJ30A-TP, and SMBJ30A-TR are supplied in Tape & Reel (TR) or Cut Tape (CT) packaging suitable for automated pick-and-place assembly. The MDD SMBJ30A packaging configuration is not specified in available data.

Q: Can I use a substitute part with higher peak pulse current?

A: Yes. Substitute parts with 12.4A or 13A peak pulse current ratings exceed the 11.2A specification of the SMBJ30E3/TR13 and provide equivalent or improved transient suppression performance in general-purpose applications.

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