SMBJ100CA-M3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ100CA-M3/52 is a bidirectional 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. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining electrical and mechanical compatibility.

Key Parameters

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

Substitute Part Grouping Explanation

Substitute parts for the SMBJ100CA-M3/52 are classified based on electrical parameter compatibility and mechanical interchangeability. The primary substitution criteria are:

Critical Parameters for Substitution:

Voltage - Reverse Standoff (Typ): 100V
Voltage - Clamping (Max) @ Ipp: 162V ±3V tolerance
Current - Peak Pulse (10/1000µs): 3.7A ±0.1A tolerance
Power - Peak Pulse: 600W
Package / Case: DO-214AA or SMB equivalent
Mounting Type: Surface Mount
Operating Temperature: -55°C minimum to 150°C minimum

Direct Equivalents maintain identical electrical specifications and packaging. Functional Equivalents operate within acceptable parameter ranges for the same application while originating from different manufacturers. Voltage-Variant Substitutes (SMBJ110CA, SMBJ120CA) serve higher voltage applications and are listed for reference but require circuit validation before substitution.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package	Operating Temperature	Product Status
SMBJ100CA-M3/52	Vishay General Semiconductor	100V	162V	3.7A	600W	DO-214AA (SMB)	-55°C ~ 150°C	Active
SMBJ100CD-M3/H	Vishay General Semiconductor	100V	159V	3.77A	600W	DO-214AA (SMB)	-55°C ~ 150°C	Active
SMBJ100CA-E3/52	Vishay General Semiconductor	100V	162V	3.7A	600W	DO-214AA (SMB)	-55°C ~ 150°C	Active
SMBJ100CA	Good-Ark Semiconductor	100V	162V	3.7A	600W	DO-214AA (SMB)	-55°C ~ 150°C	Active
SMBJ100CA-13-F	Diodes Incorporated	100V	162V	3.7A	600W	DO-214AA (SMB)	-55°C ~ 150°C	Active
SMBJ100CA-TP	Micro Commercial Co	100V	162V	3.7A	600W	DO-214AA (SMB)	-55°C ~ 175°C	Active
SMBJ100CA-TR	STMicroelectronics	100V	162V	3.8A	600W	DO-214AA (SMB)	-55°C ~ 150°C	Active
SMBJ110CA	Fairchild Semiconductor	110V	177V	3.4A	600W	DO-214AA (SMB)	-55°C ~ 150°C	Active
SMBJ120CA	Meritek	120V	193V	3.11A	600W	DO-214AA (SMB)	-55°C ~ 150°C	Active

Engineering Selection Recommendations

Direct Substitutes (Identical Electrical Performance): SMBJ100CA-E3/52, SMBJ100CA-13-F, SMBJ100CA (Good-Ark), and SMBJ100CA-TR are direct functional equivalents with matching reverse standoff voltage, clamping voltage, and peak pulse current specifications. All are Active status and RoHS3 compliant. Selection among these parts is based on packaging format (Tape & Reel vs. Cut Tape) and inventory availability.

Functional Equivalent (Minor Parameter Variance): SMBJ100CD-M3/H maintains the 100V reverse standoff specification with clamping voltage of 159V (within 3V of the primary part) and peak pulse current of 3.77A. This part is suitable for applications where the 3V clamping voltage reduction is acceptable.

Extended Temperature Capability: SMBJ100CA-TP offers an extended operating temperature range to 175°C, providing thermal margin for high-temperature environments while maintaining identical electrical specifications.

Voltage-Variant Alternatives (Circuit Validation Required): SMBJ110CA (110V standoff, 177V clamp) and SMBJ120CA (120V standoff, 193V clamp) are higher voltage variants within the SMBJ series. These parts are suitable only for circuits designed for higher voltage suppression thresholds and require verification that the increased clamping voltage does not exceed circuit component ratings.

Frequently Asked Questions (FAQ)

Q: Can SMBJ100CD-M3/H replace SMBJ100CA-M3/52 directly? A: SMBJ100CD-M3/H is functionally compatible with a 3V lower clamping voltage (159V vs. 162V). Direct substitution is acceptable if the circuit design accommodates this voltage variance. Both parts share identical reverse standoff voltage, package, and thermal specifications.

Q: What is the difference between packaging designations like -M3/52, -E3/52, and -TP? A: These suffixes indicate packaging format and supplier configuration. -M3/52 and -E3/52 denote Tape & Reel packaging from Vishay with different tape specifications. -TP indicates Tape & Reel packaging from Micro Commercial Co. All are surface mount compatible in DO-214AA packages.

Q: Can SMBJ110CA or SMBJ120CA be used as substitutes? A: SMBJ110CA and SMBJ120CA are higher voltage variants (110V and 120V standoff respectively) with correspondingly higher clamping voltages. These parts are not direct substitutes and require circuit redesign validation. Use only if the application requires higher voltage suppression thresholds.

Q: Are all substitute parts RoHS3 compliant? A: All listed substitute parts are RoHS3 compliant and MSL Level 1 (Unlimited moisture sensitivity), matching the compliance profile of the primary part.

Q: What is the impact of the 0.1A current difference in SMBJ100CA-TR? A: SMBJ100CA-TR specifies 3.8A peak pulse current versus 3.7A for the primary part. This 0.1A variance (2.7% difference) is within typical manufacturing tolerance and does not affect functional compatibility for general-purpose transient suppression applications.

Q: Which substitute offers the best thermal performance? A: SMBJ100CA-TP provides extended operating temperature capability to 175°C, compared to 150°C for other variants. This part is recommended for applications in elevated ambient temperature environments.

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