SMBJ30CA-13 Equivalent & Substitute Parts

Part Overview

The SMBJ30CA-13 is a transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in surface-mount applications. This part operates with a 30V reverse standoff voltage and provides 48.4V clamping at peak pulse current, delivering 600W peak pulse power dissipation in a compact DO-214AA (SMB) package.

The SMBJ30CA-13 is currently discontinued at DiGi Electronics. Equivalent and substitute parts are available from multiple manufacturers with identical or compatible electrical specifications, enabling direct replacement in new designs or production continuity.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	30	V
Voltage - Breakdown (Min)	33.3	V
Voltage - Clamping (Max) @ Ipp	48.4	V
Current - Peak Pulse (10/1000µs)	12.4	A
Power - Peak Pulse	600	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Bidirectional Channels	1	—
Type	Zener	—

Substitute Part Grouping Explanation

Substitution of the SMBJ30CA-13 is determined by strict equivalence of the following electrical and mechanical parameters:

Voltage - Reverse Standoff: 30V (nominal)
Voltage - Breakdown (Min): 33.3V
Voltage - Clamping (Max) @ Ipp: 48.4V
Current - Peak Pulse (10/1000µs): 12.4A minimum
Power - Peak Pulse: 600W
Package / Case: DO-214AA (SMB)
Mounting Type: Surface Mount
Bidirectional Channels: 1
Type: Zener

All substitute parts listed maintain these core electrical specifications. Variations in packaging format (Cut Tape, Tape & Reel, Digi-Reel) and manufacturer-specific part number suffixes do not affect electrical compatibility. Operating temperature range may vary slightly between manufacturers while remaining within acceptable industrial limits.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Reverse Standoff (V)	Voltage - Clamping (Max) @ Ipp (V)	Current - Peak Pulse (A)	Power - Peak Pulse (W)	Operating Temperature (°C)	Package	Product Status	RoHS Status
SMBJ30CA-13	Diodes Incorporated	30	48.4	12.4	600	-55 to 150	DO-214AA, SMB	Discontinued	Non-compliant
SMBJ30CA-13-F	Diodes Incorporated	30	48.4	12.4	600	-55 to 150	DO-214AA, SMB	Active	ROHS3 Compliant
SMBJ30CA-TP	Micro Commercial Co	30	48.4	12.4	600	-55 to 175	DO-214AA, SMB	Active	ROHS3 Compliant
SMBJ30CA	MDD	30	48.4	12.4	600	-50 to 150	DO-214AA, SMB	Active	ROHS3 Compliant
SMBJ30CA R5G	Taiwan Semiconductor Corporation	30	48.4	13	600	-55 to 150	DO-214AA, SMB	Discontinued	ROHS3 Compliant
SMBJ30CA-E3/52	Vishay General Semiconductor - Diodes Division	30	48.4	12.4	600	-55 to 150	DO-214AA, SMB	Active	ROHS3 Compliant
SMBJ30CA-E3/5B	Vishay General Semiconductor - Diodes Division	30	48.4	12.4	600	-55 to 150	DO-214AA, SMB	Active	ROHS3 Compliant
SMBJ30CA-M3/52	Vishay General Semiconductor - Diodes Division	30	48.4	12.4	600	-55 to 150	DO-214AA, SMB	Active	ROHS3 Compliant
SMBJ30CA-Q	Bourns Inc.	30	48.4	12.4	600	-55 to 150	DO-214AA, SMB	Active	ROHS3 Compliant
SMBJ30CA-TR	STMicroelectronics	30	48.4	13	600	-55 to 150	DO-214AA, SMB	Active	ROHS3 Compliant

Engineering Selection Recommendations

For new designs and production continuity, SMBJ30CA-13-F (Diodes Incorporated) is the direct equivalent, offering identical electrical specifications with active product status and ROHS3 compliance. This part maintains the original manufacturer lineage while providing regulatory compliance advantages.

For applications requiring extended operating temperature range to 175°C, SMBJ30CA-TP (Micro Commercial Co) provides equivalent electrical performance with expanded thermal capability.

Vishay TransZorb series parts (SMBJ30CA-E3/52, SMBJ30CA-E3/5B, SMBJ30CA-M3/52) deliver identical electrical specifications with active status and full ROHS3 compliance. These parts are suitable for general-purpose and telecom applications.

SMBJ30CA-Q (Bourns Inc.) is qualified to AEC-Q101 automotive standards and carries active product status, making it appropriate for automotive-grade applications requiring enhanced reliability documentation.

SMBJ30CA-TR (STMicroelectronics) provides equivalent performance with peak pulse current rated at 13A, offering a slight margin above the 12.4A specification of the original part.

All listed substitutes are electrically and mechanically compatible with the SMBJ30CA-13 in DO-214AA (SMB) surface-mount applications.

Frequently Asked Questions (FAQ)

Q: Can SMBJ30CA-13-F be used as a direct replacement for SMBJ30CA-13?

A: Yes. SMBJ30CA-13-F is manufactured by Diodes Incorporated and maintains identical electrical specifications: 30V reverse standoff, 48.4V clamping voltage, 12.4A peak pulse current, and 600W peak pulse power. The primary difference is packaging format (Tape & Reel) and ROHS3 compliance status.

Q: What is the difference between the various Vishay part numbers (SMBJ30CA-E3/52, SMBJ30CA-E3/5B, SMBJ30CA-M3/52)?

A: These parts are electrically identical with the same 30V/48.4V/12.4A specifications. Differences are in packaging format: SMBJ30CA-E3/52 and SMBJ30CA-M3/52 are supplied in Tape & Reel format, while SMBJ30CA-E3/5B is also Tape & Reel. All are TransZorb series components with active product status.

Q: Are there any temperature range limitations when substituting parts?

A: Most substitutes operate from -55°C to 150°C (TJ), matching the original specification. SMBJ30CA-TP extends to -175°C maximum junction temperature. MDD SMBJ30CA has a minimum operating temperature of -50°C instead of -55°C. Verify application requirements before selection.

Q: Does peak pulse current variation (12.4A vs. 13A) affect compatibility?

A: No. Parts rated at 13A peak pulse current (SMBJ30CA R5G, SMBJ30CA-TR) exceed the 12.4A requirement and are fully compatible. Higher current rating provides additional design margin without affecting electrical performance in applications designed for 12.4A operation.

Q: What packaging formats are available for SMBJ30CA substitutes?

A: Substitutes are available in Cut Tape (CT), Tape & Reel (TR), and Digi-Reel formats. All maintain the same DO-214AA (SMB) physical package. Selection depends on production volume and assembly equipment compatibility, not electrical performance.

Q: Is RoHS compliance required for my application?

A: The original SMBJ30CA-13 is RoHS non-compliant. All active substitute parts listed are ROHS3 compliant, meeting current regulatory requirements for most commercial and industrial applications. Verify compliance requirements for your specific market or end-use application.

Q: Can SMBJ30CA-Q be used in non-automotive applications?

A: Yes. SMBJ30CA-Q (Bourns, AEC-Q101 qualified) meets or exceeds general-purpose TVS diode specifications and is suitable for any application requiring 30V/48.4V/12.4A performance. AEC-Q101 qualification indicates enhanced reliability testing and is not restrictive to automotive use.

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