SMBJ150A-M3/5B Equivalent & Substitute Parts

Part Overview

The SMBJ150A-M3/5B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the DO-214AA (SMB) package and is designed for general-purpose transient voltage suppression applications. The part is Active status and RoHS3 compliant, making it suitable for modern electronic designs requiring overvoltage protection.

Equivalent and substitute parts are identified based on matching electrical performance parameters and mechanical compatibility within the TVS diode category. Substitutes maintain identical or functionally equivalent voltage ratings, clamping characteristics, and package specifications.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	150V
Voltage - Breakdown (Min)	167V
Voltage - Clamping (Max) @ Ipp	243V
Current - Peak Pulse (10/1000µs)	2.5A
Power - Peak Pulse	600W
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature Range	-55°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the SMBJ150A-M3/5B are classified based on strict electrical and mechanical parameter matching:

Direct Electrical Equivalents maintain all critical voltage parameters: Reverse Standoff Voltage of 150V, Breakdown Voltage minimum of 167V, and Clamping Voltage maximum of 243V at peak pulse current of 2.5A. These parts are interchangeable in applications where the main part is specified.

Packaging Variants include parts with identical electrical specifications but different tape and reel configurations (Cut Tape & Digi-Reel® versus standard Tape & Reel). These variants are mechanically compatible in the same PCB footprint and maintain the DO-214AA (SMB) package standard.

Manufacturer Variants represent the same base product number (SMBJ150) from different manufacturers (Vishay, MDD, Diodes Incorporated, Micro Commercial Co) with matching electrical performance and package specifications.

Related Voltage Rating includes the SMBJ130A, which operates at a lower Reverse Standoff Voltage of 130V with correspondingly lower clamping voltage (209V) and higher peak pulse current (2.9A). This part is suitable only for applications with lower voltage transient requirements.

Parameter Comparison

Part Number	Manufacturer	Reverse Standoff (V)	Breakdown Min (V)	Clamping Max (V)	Peak Pulse (A)	Package	Temp Range (°C)	RoHS Status
SMBJ150A-M3/5B	Vishay	150	167	243	2.5	DO-214AA, SMB	-55 ~ 150	ROHS3
SMBJ150A-E3/52	Vishay	150	167	243	2.5	DO-214AA, SMB	-55 ~ 150	ROHS3
SMBJ150D-M3/I	Vishay	150	170	239	2.53	DO-214AA, SMB	-55 ~ 150	ROHS3
SMBJ150A	MDD	150	167	243	2.5	DO-214AA, SMB	-50 ~ 150	ROHS3
SMBJ150A-13-F	Diodes Incorporated	150	167	243	2.5	DO-214AA, SMB	-55 ~ 150	ROHS3
SMBJ150A-TP	Micro Commercial Co	150	167	243	2.5	DO-214AA, SMB	-55 ~ 175	ROHS3
SMBJ130A	MDD	130	144	209	2.9	DO-214AA, SMB	-50 ~ 150	ROHS3

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents): SMBJ150A-E3/52, SMBJ150A-13-F, SMBJ150A-TP, and SMBJ150A (MDD) are fully equivalent to the SMBJ150A-M3/5B. All maintain identical Reverse Standoff Voltage (150V), Breakdown Voltage (167V minimum), and Clamping Voltage (243V maximum) specifications. All are Active status products with ROHS3 compliance and MSL 1 rating. Selection among these parts depends on packaging availability (tape and reel configuration) and supply chain requirements.

Secondary Substitute (Vishay Variant): SMBJ150D-M3/I from Vishay maintains the 150V Reverse Standoff Voltage but exhibits slightly different electrical characteristics: Breakdown Voltage of 170V (versus 167V) and Clamping Voltage of 239V (versus 243V). Peak pulse current is marginally higher at 2.53A. This part is suitable where minor voltage parameter variations are acceptable within circuit design margins.

Alternative Voltage Rating (Lower Protection Level): SMBJ130A operates at 130V Reverse Standoff Voltage with 209V Clamping Voltage and 2.9A peak pulse current. This part is not interchangeable with the SMBJ150A-M3/5B and is suitable only for applications requiring lower voltage transient suppression.

All substitute parts maintain the DO-214AA (SMB) surface mount package, ensuring mechanical compatibility with existing PCB designs. Temperature operating ranges vary slightly; SMBJ150A-TP extends to 175°C maximum junction temperature, while MDD variants operate to 150°C.

Frequently Asked Questions (FAQ)

Q: Can SMBJ150A-E3/52 replace SMBJ150A-M3/5B directly? A: Yes. Both parts are manufactured by Vishay with identical electrical specifications (150V standoff, 167V breakdown minimum, 243V clamping maximum, 2.5A peak pulse). The difference is packaging configuration: SMBJ150A-E3/52 uses Cut Tape & Digi-Reel® while SMBJ150A-M3/5B uses standard Tape & Reel. Both are DO-214AA (SMB) package and mechanically compatible.

Q: What is the difference between SMBJ150A from different manufacturers? A: The base electrical specifications remain constant across manufacturers (Vishay, MDD, Diodes Incorporated, Micro Commercial Co): 150V standoff, 167V breakdown, 243V clamping, 2.5A peak pulse. Minor variations exist in operating temperature ranges (MDD: -50°C to 150°C; Vishay and Diodes: -55°C to 150°C; Micro Commercial: -55°C to 175°C). All are ROHS3 compliant and MSL 1 rated.

Q: Is SMBJ150D-M3/I compatible with SMBJ150A-M3/5B? A: SMBJ150D-M3/I maintains the same 150V Reverse Standoff Voltage and DO-214AA package but exhibits different clamping characteristics (239V versus 243V) and slightly higher peak pulse current (2.53A versus 2.5A). Compatibility depends on circuit design margins; verify that the lower clamping voltage and higher current rating are acceptable for the application.

Q: Can SMBJ130A be used instead of SMBJ150A-M3/5B? A: No. SMBJ130A operates at a lower voltage rating (130V standoff, 209V clamping) and is designed for different transient voltage protection levels. Use only in applications specifically requiring 130V protection. Substitution would result in inadequate overvoltage protection in circuits designed for 150V suppression.

Q: What does the packaging designation mean (Tape & Reel vs. Cut Tape)? A: Both are surface mount delivery formats for automated assembly. Tape & Reel (TR) provides continuous reel packaging for high-volume production. Cut Tape (CT) & Digi-Reel® provides smaller quantities in tape format. Electrical performance and PCB footprint compatibility are identical; selection depends on production volume and assembly equipment requirements.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with modern manufacturing processes and environmental regulations.

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