SMB8J36CA-M3/52 Equivalent & Substitute Parts

Part Overview

The SMB8J36CA-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, making it suitable for modern electronic designs requiring overvoltage protection.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when sourcing from multiple manufacturers is needed to optimize supply chain reliability and cost efficiency.

Key Parameters

Parameter	Value
Manufacturer Part Number	SMB8J36CA-M3/52
Manufacturer	Vishay General Semiconductor - Diodes Division
Category	Transient Voltage Suppressors (TVS)
Package / Case	DO-214AA, SMB
Voltage - Reverse Standoff (Typ)	36V
Voltage - Breakdown (Min)	40V
Voltage - Clamping (Max) @ Ipp	58.1V
Current - Peak Pulse (10/1000µs)	13.8A
Power - Peak Pulse	800W
Bidirectional Channels	1
Operating Temperature	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Product Status	Active
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SMB8J36CA-M3/52 is determined by strict electrical and mechanical parameter matching:

Critical Matching Parameters:

Voltage - Reverse Standoff (Typ): 36V
Voltage - Breakdown (Min): 40V
Voltage - Clamping (Max) @ Ipp: 58.1V
Package / Case: DO-214AA, SMB
Bidirectional Channels: 1
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

All identified substitute parts maintain identical voltage specifications (36V standoff, 40V breakdown minimum, 58.1V clamping maximum) and package configuration. Variations in peak pulse current (10.3A to 13.8A) and power dissipation (600W to 800W) are within acceptable substitution parameters for this component category. Operating temperature ranges vary slightly across manufacturers but remain within industrial specifications (-50°C to -65°C minimum, 150°C to 175°C maximum).

Parameter Comparison

Parameter	SMB8J36CA-M3/52 (Vishay)	SMBJ36CA (MDD)	SMBJ36CA-13-F (Diodes Inc.)	SMBJ36CA-TP (MCC)	SMBJ36CA-TR (STMicroelectronics)	SZ1SMB36CAT3G (Littelfuse)
Voltage - Reverse Standoff (Typ)	36V	36V	36V	36V	36V	36V
Voltage - Breakdown (Min)	40V	40V	40V	40V	40V	40V
Voltage - Clamping (Max) @ Ipp	58.1V	58.1V	58.1V	58.1V	58.1V	58.1V
Current - Peak Pulse (10/1000µs)	13.8A	10.4A	10.3A	10.3A	10.3A	10.3A
Power - Peak Pulse	800W	600W	600W	600W	600W	600W
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Operating Temperature (Min)	-55°C	-50°C	-55°C	-55°C	-55°C	-65°C
Operating Temperature (Max)	150°C	150°C	150°C	175°C	150°C	150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with modern manufacturing standards. The SMB8J36CA-M3/52 from Vishay offers the highest peak pulse current specification (13.8A) and power dissipation (800W) among the group, providing additional margin for transient suppression applications.

Substitute parts from MDD, Diodes Incorporated, Micro Commercial Co, and STMicroelectronics deliver equivalent voltage performance with reduced peak pulse ratings (10.3A to 10.4A, 600W). These alternatives are suitable for applications where the full 13.8A capability is not required.

The SZ1SMB36CAT3G from Littelfuse includes automotive-grade qualification (AEC-Q101) and extended lower operating temperature range (-65°C minimum), making it appropriate for automotive and harsh environment applications requiring enhanced reliability certifications.

Frequently Asked Questions (FAQ)

Q: Can SMBJ36CA (MDD) directly replace SMB8J36CA-M3/52?

A: Yes, for applications where peak pulse current requirements do not exceed 10.4A. Both parts share identical voltage specifications (36V standoff, 40V breakdown, 58.1V clamping) and DO-214AA SMB packaging. The MDD variant provides 600W peak pulse power versus 800W for the Vishay part.

Q: What is the difference between SMBJ36CA-13-F and SMBJ36CA-TP?

A: Both parts are electrically equivalent with 36V standoff, 40V breakdown, and 58.1V clamping specifications. SMBJ36CA-13-F is supplied by Diodes Incorporated in Cut Tape (CT) & Digi-Reel® packaging. SMBJ36CA-TP is supplied by Micro Commercial Co in Tape & Reel (TR) format. The SMBJ36CA-TP offers extended maximum operating temperature to 175°C versus 150°C for the Diodes part.

Q: Is SZ1SMB36CAT3G suitable for non-automotive applications?

A: Yes. The SZ1SMB36CAT3G meets all electrical requirements for general-purpose transient voltage suppression with 36V standoff and 58.1V clamping. The automotive-grade qualification (AEC-Q101) and extended temperature range (-65°C to 150°C) provide additional performance margin applicable to industrial and commercial designs.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts use DO-214AA (SMB) surface mount packaging. Packaging format variations (Tape & Reel, Cut Tape & Digi-Reel) refer to supply reel configuration, not component package type. All parts are compatible with standard SMB footprints.

Q: What is the significance of the 13.8A versus 10.3A peak pulse current difference?

A: The SMB8J36CA-M3/52 (13.8A) provides higher transient current handling capacity and 800W peak pulse power dissipation. Substitute parts rated at 10.3A to 10.4A with 600W dissipation are suitable for applications with lower transient energy requirements. Selection depends on the specific overvoltage transient magnitude and duration in the target application.

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