SMBJ30C-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ30C-E3/52 is a 30V Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, housed in a DO-214AA (SMB) surface mount package. This bidirectional Zener diode is designed for general-purpose transient voltage suppression applications with a peak pulse power rating of 600W and peak pulse current of 11.2A at a clamping voltage of 53.5V.

The SMBJ30C-E3/52 is classified as obsolete. Equivalent and substitute parts are available from multiple manufacturers with active product status, offering improved availability and supply chain continuity while maintaining electrical compatibility within specified parameter tolerances.

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	-55 to 150	°C (TJ)
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB
Bidirectional Channels	1
Type	Zener

Substitute Part Grouping Explanation

Substitution of the SMBJ30C-E3/52 is determined by the following critical parameters:

Electrical Compatibility Requirements:

Voltage - Reverse Standoff (Typ): 30V
Voltage - Breakdown (Min): 33.3V
Bidirectional Channels: 1
Type: Zener
Mounting Type: Surface Mount
Package / Case: DO-214AA, SMB

Acceptable Parameter Variations: Substitute parts must maintain the same reverse standoff voltage (30V) and breakdown voltage (33.3V minimum). Clamping voltage, peak pulse current, and operating temperature range may vary within the constraints of the application circuit. All substitute parts must be surface mount Zener diodes in DO-214AA (SMB) packaging with single bidirectional channel configuration.

Substitute Categories:

Direct Electrical Equivalents - Parts with identical or equivalent clamping voltage (53.5V) and peak pulse current (11.2A)
Functional Equivalents - Parts with lower clamping voltage (48.4V) and higher peak pulse current (12.4A), suitable for applications where clamping voltage reduction is acceptable
Cross-Manufacturer Alternatives - Parts from different manufacturers meeting the same electrical and mechanical specifications

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Operating Temperature	Product Status	Packaging
SMBJ30C-E3/52	Vishay General Semiconductor - Diodes Division	30V	33.3V	53.5V	11.2A	-55°C ~ 150°C	Obsolete	DO-214AA (SMBJ)
SMBJ30CA-E3/52	Vishay General Semiconductor - Diodes Division	30V	33.3V	48.4V	12.4A	-55°C ~ 150°C	Active	Cut Tape (CT) & Digi-Reel®
SMBJ30CE3/TR13	Microchip Technology	30V	33.3V	53.5V	11.2A	-65°C ~ 150°C	Active	Tape & Reel (TR)
SMBJ30CA-HR	Littelfuse Inc.	30V	33.3V	48.4V	12.4A	-65°C ~ 150°C	Active	DO-214AA (SMBJ)
1SMB30CA BK PBFREE	Central Semiconductor Corp	30V	33.3V	48.4V	12.4A	-65°C ~ 150°C	Active	Bulk
1SMB30CA TR13 PBFREE	Central Semiconductor Corp	30V	33.3V	48.4V	12.4A	-65°C ~ 150°C	Active	Tape & Reel (TR)
SMBJ30CA	MDD	30V	33.3V	48.4V	12.4A	-50°C ~ 150°C	Active	SMB/DO-214AA
SMBJ30CA-13-F	Diodes Incorporated	30V	33.3V	48.4V	12.4A	-55°C ~ 150°C	Active	Tape & Reel (TR)

Engineering Selection Recommendations

For Direct Electrical Replacement (Identical Clamping Voltage):

SMBJ30CE3/TR13 from Microchip Technology is the primary direct equivalent, offering identical clamping voltage (53.5V) and peak pulse current (11.2A) specifications. This part maintains the original electrical performance characteristics and extends the operating temperature range to -65°C. Product status is active with established supply availability.

For Functional Equivalent Substitution (Lower Clamping Voltage):

SMBJ30CA-E3/52 (Vishay), SMBJ30CA-HR (Littelfuse), 1SMB30CA BK PBFREE and 1SMB30CA TR13 PBFREE (Central Semiconductor), SMBJ30CA (MDD), and SMBJ30CA-13-F (Diodes Incorporated) are functionally equivalent alternatives with reduced clamping voltage (48.4V) and increased peak pulse current (12.4A). These parts are suitable for applications where lower clamping voltage provides improved circuit protection. All substitute parts maintain the 30V reverse standoff voltage and 33.3V minimum breakdown voltage.

Compliance and Certification:

All listed substitute parts comply with RoHS3 requirements and maintain REACH unaffected status. Moisture Sensitivity Level (MSL) is rated at 1 (Unlimited) across all alternatives. All parts are classified under ECCN EAR99 and HTSUS 8541.10.0080.

Packaging Considerations:

Selection should account for manufacturing process requirements. Cut Tape (CT) & Digi-Reel® packaging (SMBJ30CA-E3/52) is suitable for automated assembly. Tape & Reel (TR) packaging options (SMBJ30CE3/TR13, 1SMB30CA TR13 PBFREE, SMBJ30CA-13-F) support high-volume production. Bulk packaging (1SMB30CA BK PBFREE) is available for manual assembly or prototyping.

Frequently Asked Questions (FAQ)

Q: Can SMBJ30CA-E3/52 directly replace SMBJ30C-E3/52 in my circuit?

A: SMBJ30CA-E3/52 is electrically compatible as a functional equivalent. The primary difference is reduced clamping voltage (48.4V versus 53.5V) and increased peak pulse current (12.4A versus 11.2A). This substitution is acceptable if your circuit design tolerates lower clamping voltage. Both parts share identical reverse standoff voltage (30V) and breakdown voltage (33.3V minimum).

Q: What is the difference between SMBJ30CE3/TR13 and SMBJ30CA-E3/52?

A: SMBJ30CE3/TR13 (Microchip) maintains the original clamping voltage specification (53.5V) and peak pulse current (11.2A), making it a direct electrical equivalent. SMBJ30CA-E3/52 (Vishay) features lower clamping voltage (48.4V) and higher peak pulse current (12.4A). SMBJ30CE3/TR13 is supplied in Tape & Reel packaging, while SMBJ30CA-E3/52 is available in Cut Tape & Digi-Reel® format.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts comply with RoHS3 requirements and maintain REACH unaffected status, matching the compliance profile of the original SMBJ30C-E3/52.

Q: Does operating temperature range affect substitution compatibility?

A: Operating temperature range does not prevent substitution. The original part operates from -55°C to 150°C. Several substitutes extend this range to -65°C (Microchip, Littelfuse, Central Semiconductor), providing enhanced low-temperature performance. MDD variant operates from -50°C to 150°C. Selection should confirm your application's temperature requirements are met.

Q: Which substitute offers the best supply availability?

A: SMBJ30CA (MDD) shows the highest inventory level at 71,300 pieces. SMBJ30CA-13-F (Diodes Incorporated) offers 197,300 pieces in stock. Both parts are active products with established supply chains suitable for production volume requirements.

Q: Can I use Central Semiconductor 1SMB30CA parts as substitutes?

A: Yes. Both 1SMB30CA BK PBFREE (Bulk) and 1SMB30CA TR13 PBFREE (Tape & Reel) are functionally equivalent to SMBJ30C-E3/52, with identical electrical specifications to other 48.4V clamping voltage alternatives. Selection between bulk and tape & reel packaging depends on your assembly process requirements.

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