SMBJ100A-M3/5B Equivalent & Substitute Parts

Part Overview

The SMBJ100A-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. Substitute parts are identified when electrical parameters and mechanical compatibility align with the original specification, enabling direct replacement in circuit designs without functional degradation.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	100	V
Voltage - Breakdown (Min)	111	V
Voltage - Clamping (Max) @ Ipp	162	V
Current - Peak Pulse (10/1000µs)	3.7	A
Power - Peak Pulse	600	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AA, SMB	-
Mounting Type	Surface Mount	-
Type	Zener	-
Unidirectional Channels	1	-
RoHS Status	ROHS3 Compliant	-
MSL Rating	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitute parts for the SMBJ100A-M3/5B are classified into two categories based on electrical parameter alignment:

Category 1: Direct Electrical Equivalents Parts with identical or near-identical electrical specifications (Voltage - Reverse Standoff: 100V, Voltage - Clamping: 162V, Current - Peak Pulse: 3.7A, Power - Peak Pulse: 600W) and compatible DO-214AA/SMB packaging. These parts maintain full functional equivalence and can be used interchangeably in the same circuit application.

Category 2: Manufacturer-Recommended Alternatives Parts with different voltage ratings (110V or 120V Reverse Standoff) recommended by the manufacturer for applications requiring higher transient voltage protection margins. These parts share the same package, mounting type, and general application category but operate at elevated voltage thresholds.

The substitution logic is based strictly on:

Voltage - Reverse Standoff (Typ)
Voltage - Clamping (Max) @ Ipp
Current - Peak Pulse (10/1000µs)
Power - Peak Pulse
Package / Case compatibility (DO-214AA, SMB)
Mounting Type (Surface Mount)
Product Status (Active)
RoHS Compliance (ROHS3)

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (V)	Voltage - Clamping (V)	Current - Peak Pulse (A)	Power - Peak Pulse (W)	Operating Temp (°C)	Package	Status
SMBJ100A-M3/5B	Vishay	100	162	3.7	600	-55 to 150	DO-214AA	Active
SMBJ100A-E3/52	Vishay	100	162	3.7	600	-55 to 150	DO-214AA	Active
SMBJ100D-M3/I	Vishay	100	159	3.77	600	-55 to 150	DO-214AA	Active
SMBJ100A	MDD	100	162	3.7	600	-50 to 150	DO-214AA	Active
SMBJ100A-13-F	Diodes Incorporated	100	162	3.7	600	-55 to 150	DO-214AA	Active
SMBJ100A-TP	Micro Commercial Co	100	162	3.7	600	-55 to 175	DO-214AA	Active
SMBJ110A	MDD	110	177	3.4	600	-50 to 150	DO-214AA	Active
SMBJ120A	MDD	120	193	3.1	600	-50 to 150	DO-214AA	Active

Engineering Selection Recommendations

Direct Substitutes (100V Rating Class) SMBJ100A-E3/52, SMBJ100D-M3/I, SMBJ100A (MDD), SMBJ100A-13-F, and SMBJ100A-TP are suitable direct replacements. All parts maintain Active product status and ROHS3 compliance. SMBJ100A-E3/52 and SMBJ100A-13-F match the full temperature range (-55°C to 150°C) of the original part. SMBJ100A-TP extends the upper operating temperature to 175°C. SMBJ100A (MDD) operates from -50°C to 150°C. SMBJ100D-M3/I exhibits marginally lower clamping voltage (159V vs 162V) and slightly higher peak pulse current (3.77A vs 3.7A), remaining within functional tolerance for general-purpose applications.

Manufacturer-Recommended Alternatives (110V and 120V Rating Classes) SMBJ110A and SMBJ120A are manufacturer-recommended alternatives for applications requiring elevated transient voltage suppression. These parts maintain the same DO-214AA package, 600W peak pulse power rating, and Active status with ROHS3 compliance. Selection between these alternatives depends on the specific transient voltage environment and required clamping margin in the circuit design.

Frequently Asked Questions (FAQ)

Q: Can SMBJ100A-E3/52 replace SMBJ100A-M3/5B directly? A: Yes. Both parts share identical electrical specifications (100V Reverse Standoff, 162V Clamping, 3.7A Peak Pulse Current, 600W Peak Pulse Power), operate across the same temperature range (-55°C to 150°C), use the DO-214AA package, and maintain Active status with ROHS3 compliance. The difference is packaging format (Tape & Reel variant).

Q: What is the difference between SMBJ100A-TP and the original part? A: SMBJ100A-TP is electrically identical (100V Reverse Standoff, 162V Clamping, 3.7A Peak Pulse Current) but extends the upper operating temperature limit to 175°C compared to 150°C for SMBJ100A-M3/5B. This makes it suitable for higher-temperature environments while maintaining all other specifications.

Q: When should SMBJ110A or SMBJ120A be used instead of SMBJ100A equivalents? A: SMBJ110A and SMBJ120A are manufacturer-recommended alternatives for circuits requiring higher transient voltage suppression thresholds. SMBJ110A operates at 110V Reverse Standoff with 177V Clamping. SMBJ120A operates at 120V Reverse Standoff with 193V Clamping. These parts are selected based on the specific transient voltage environment and required protection margin, not as direct replacements.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Rating 1 (Unlimited), matching the environmental and regulatory status of SMBJ100A-M3/5B.

Q: Does package format affect substitution? A: All substitute parts use the DO-214AA (SMB) surface mount package, ensuring mechanical and electrical compatibility with the original part's PCB footprint and mounting requirements.

Q: What is the inventory status of substitute parts? A: Inventory levels vary by part and manufacturer. SMBJ100A (MDD) and SMBJ110A (MDD) maintain the highest stock levels (38,400 and 47,400 units respectively). Specific availability should be verified with the component supplier.

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