SMBJ30CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ30CE3/TR13 is a 30V Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology in the 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. The component is Active in product status and RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support component sourcing from multiple manufacturers while maintaining electrical and mechanical 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	-65 to 150	°C (TJ)
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Bidirectional Channels	1	—
Type	Zener	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the SMBJ30CE3/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): minimum 11.2A
Power - Peak Pulse: 600W
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Bidirectional Channels: 1
Type: Zener
RoHS Status: ROHS3 Compliant

Acceptable Variation:

Voltage - Clamping (Max) @ Ipp: 48.4V to 53.5V (substitute parts exhibit lower clamping voltage, which is acceptable for transient suppression applications)
Operating Temperature Range: minimum -55°C to 150°C (substitute parts may have extended upper temperature limits)
Peak Pulse Current: 12.4A to 13A (substitute parts exceed minimum requirement)

All identified substitute parts maintain identical reverse standoff voltage, breakdown voltage, power rating, package configuration, and compliance certifications as the primary part.

Parameter Comparison

Parameter	SMBJ30CE3/TR13 (Microchip)	SMBJ30CA (MDD)	SMBJ30CA-13-F (Diodes Inc.)	SMBJ30CA-TP (MCC)	SMBJ30CA-TR (STMicroelectronics)	SZ1SMB30CAT3G (Littelfuse)
Manufacturer	Microchip Technology	MDD	Diodes Incorporated	Micro Commercial Co	STMicroelectronics	Littelfuse
Voltage - Reverse Standoff (Typ)	30V	30V	30V	30V	30V	30V
Voltage - Breakdown (Min)	33.3V	33.3V	33.3V	33.3V	33.3V	33.3V
Voltage - Clamping (Max) @ Ipp	53.5V	48.4V	48.4V	48.4V	48.4V	48.4V
Current - Peak Pulse (10/1000µs)	11.2A	12.4A	12.4A	12.4A	13A	12.4A
Power - Peak Pulse	600W	600W	600W	600W	600W	600W
Operating Temperature Range	-65 to 150°C	-50 to 150°C	-55 to 150°C	-55 to 175°C	-55 to 150°C	-65 to 150°C
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Type	Zener	—	Zener	Zener	Zener	Zener
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All identified substitute parts are Active in product status and maintain full RoHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the primary SMBJ30CE3/TR13 component.

Microchip Technology SMBJ30CE3/TR13 remains the primary reference part with the highest clamping voltage specification (53.5V) and operating temperature range extending to -65°C.

Substitute parts from MDD, Diodes Incorporated, Micro Commercial Co, STMicroelectronics, and Littelfuse all provide equivalent electrical performance within the 30V reverse standoff voltage class. These alternatives feature:

Identical reverse standoff and breakdown voltage specifications
Peak pulse current ratings equal to or exceeding the primary part (12.4A to 13A versus 11.2A)
Identical 600W peak pulse power rating
Identical DO-214AA/SMB package configuration
Full RoHS3 and REACH compliance

Littelfuse SZ1SMB30CAT3G includes automotive-grade qualification (AEC-Q101) and matches the primary part's operating temperature range (-65 to 150°C), providing additional design assurance for automotive applications.

Micro Commercial Co SMBJ30CA-TP offers extended upper operating temperature to 175°C, suitable for high-temperature environment applications.

Selection among substitute parts should be based on availability, packaging format preference (Tape & Reel, Cut Tape, or Digi-Reel), and specific application temperature requirements.

Frequently Asked Questions (FAQ)

Q: Can SMBJ30CA (MDD) directly replace SMBJ30CE3/TR13 (Microchip)?

A: Yes. Both parts share identical reverse standoff voltage (30V), breakdown voltage (33.3V), peak pulse power (600W), package configuration (DO-214AA/SMB), and RoHS3 compliance. The SMBJ30CA provides higher peak pulse current (12.4A versus 11.2A), making it electrically compatible. The primary difference is clamping voltage (48.4V versus 53.5V), which is acceptable for transient suppression applications.

Q: What is the significance of the clamping voltage difference between the primary part (53.5V) and substitute parts (48.4V)?

A: Clamping voltage represents the maximum voltage across the TVS diode during transient suppression at peak pulse current. Lower clamping voltage in substitute parts indicates more aggressive voltage suppression, which is beneficial for circuit protection. This difference does not prevent substitution for general-purpose transient voltage suppression applications.

Q: Are all substitute parts available in the same packaging formats as the primary part?

A: The primary SMBJ30CE3/TR13 is supplied in Tape & Reel (TR) format. Substitute parts are available in multiple packaging formats: SMBJ30CA (MDD) in standard packaging, SMBJ30CA-13-F (Diodes Inc.) in Tape & Reel, SMBJ30CA-TP (MCC) in Cut Tape & Digi-Reel, SMBJ30CA-TR (STMicroelectronics) in Cut Tape & Digi-Reel, and SZ1SMB30CAT3G (Littelfuse) in Tape & Reel. Packaging format selection depends on assembly requirements and supplier availability.

Q: Which substitute part is suitable for automotive applications?

A: The Littelfuse SZ1SMB30CAT3G is qualified to AEC-Q101 automotive standards and maintains the same operating temperature range as the primary part (-65 to 150°C). This part is recommended for automotive-grade circuit protection applications.

Q: Can SMBJ30CA-TP (MCC) be used in applications requiring extended high-temperature operation?

A: Yes. The SMBJ30CA-TP supports operating temperatures up to 175°C (junction temperature), compared to 150°C for the primary part and most other substitutes. This extended temperature capability makes it suitable for high-temperature environment applications, provided other electrical parameters meet circuit requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts carry RoHS3 compliance certification and REACH unaffected status, matching the regulatory compliance of the primary SMBJ30CE3/TR13 part.

Q: What is the minimum peak pulse current requirement for substitution?

A: The primary part specifies 11.2A peak pulse current. All substitute parts meet or exceed this requirement, with ratings of 12.4A to 13A, providing equal or superior transient suppression capability.

Q: Is the DO-214AA package identical across all parts?

A: Yes. All parts, including the primary SMBJ30CE3/TR13 and all substitutes, use the DO-214AA surface mount package, also designated as SMB. This ensures mechanical and electrical compatibility in PCB assembly without layout modifications.

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