SMBJ75CA-M3/5B Equivalent & Substitute Parts

Part Overview

The SMBJ75CA-M3/5B 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 ESD and surge protection.

Substitute parts are identified when electrical characteristics and mechanical specifications align within the allowed parameters for this TVS diode category, ensuring functional equivalence in circuit protection applications.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	75	V
Voltage - Breakdown (Min)	83.3	V
Voltage - Clamping (Max) @ Ipp	121	V
Current - Peak Pulse (10/1000µs)	5	A
Power - Peak Pulse	600	W
Operating Temperature Range	-55 to 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 SMBJ75CA-M3/5B are identified based on the following critical parameters that determine functional equivalence:

Voltage - Reverse Standoff (Typ): 75V
Voltage - Breakdown (Min): 83.3V
Voltage - Clamping (Max) @ Ipp: 121V
Current - Peak Pulse (10/1000µs): 5A minimum
Power - Peak Pulse: 600W
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Operating Temperature Range: -55°C to 150°C (TJ) or compatible range
RoHS Status: ROHS3 Compliant

Parts meeting these electrical and mechanical specifications are classified as direct substitutes. Variations in packaging tape reel designations (M3/5B, E3/52, E3/5B) do not affect electrical performance and represent equivalent supply chain configurations.

Parameter Comparison

Parameter	SMBJ75CA-M3/5B (Main)	SMBJ75CA-E3/52	SMBJ75CA-E3/5B	SMBJ75CA (MDD)
Manufacturer	Vishay	Vishay	Vishay	MDD
Voltage - Reverse Standoff (Typ)	75V	75V	75V	75V
Voltage - Breakdown (Min)	83.3V	83.3V	83.3V	83.3V
Voltage - Clamping (Max) @ Ipp	121V	121V	121V	121V
Current - Peak Pulse (10/1000µs)	5A	5A	5A	5.3A
Power - Peak Pulse	600W	600W	600W	600W
Operating Temperature Range	-55 to 150°C	-55 to 150°C	-55 to 150°C	-50 to 150°C
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with modern manufacturing standards.

Vishay SMBJ75CA-E3/52 and SMBJ75CA-E3/5B: These parts are manufacturer-recommended alternatives from Vishay General Semiconductor - Diodes Division. They share identical electrical specifications with the main part number and differ only in tape reel packaging designations. Selection between these variants depends on supply chain availability and procurement requirements.

MDD SMBJ75CA: This alternative meets all critical electrical parameters with a peak pulse current rating of 5.3A, which exceeds the 5A specification of the main part. The operating temperature range extends to -50°C minimum (versus -55°C for Vishay variants), which remains within acceptable limits for most general-purpose applications. This part offers higher current capacity and represents a performance-equivalent option.

All substitute parts are suitable for direct replacement in circuit designs where the SMBJ75CA-M3/5B is specified, provided that the application does not require the extended lower temperature range below -50°C.

Frequently Asked Questions (FAQ)

Q: Can SMBJ75CA-E3/52 and SMBJ75CA-E3/5B be used interchangeably with SMBJ75CA-M3/5B?

A: Yes. These Vishay parts are direct electrical equivalents. The designations M3/5B, E3/52, and E3/5B refer to different tape reel packaging configurations used in automated assembly processes. Electrical performance and package dimensions (DO-214AA, SMB) are identical.

Q: What is the difference between the Vishay and MDD SMBJ75CA variants?

A: Both manufacturers provide 75V TVS diodes in DO-214AA packages with matching voltage specifications. The MDD variant specifies a peak pulse current of 5.3A compared to 5A for Vishay parts, and a minimum operating temperature of -50°C versus -55°C. For applications operating above -50°C, the MDD part is functionally equivalent and offers higher current capacity.

Q: Are there any compliance or certification differences between these parts?

A: All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings. REACH status is unaffected for all variants. No compliance or certification differences exist between the main part and substitutes.

Q: Can I use SMBJ75CA (MDD) if my circuit requires operation at -55°C?

A: The MDD variant is rated to -50°C minimum. If your application requires guaranteed operation at -55°C, use Vishay variants (SMBJ75CA-M3/5B, SMBJ75CA-E3/52, or SMBJ75CA-E3/5B), which are rated to -55°C.

Q: Do these parts require any circuit modifications when substituting?

A: No circuit modifications are required. All substitute parts maintain identical package footprints (DO-214AA, SMB) and electrical characteristics within the specified parameters. Direct PCB replacement is supported.

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