SMB8J8.0CA-M3/52 Equivalent & Substitute Parts

Part Overview

The SMB8J8.0CA-M3/52 is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component operates in the TransZorb® series and is designed for general-purpose transient voltage suppression applications. The device features an 8V reverse standoff voltage with a 13.6V maximum clamping voltage and 58.8A peak pulse current capability in a surface-mount DO-214AA (SMB) package. The part maintains Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified based on matching electrical characteristics, package compatibility, and operational parameters that ensure functional interchangeability in circuit applications.

Substiute Parts

SMB8J8.0CA-M3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 1081SMB8J8.0CA-M3/52 Datasheet

Current PartRFQ

SMBJ8.0CA

MDDIn Stock: 3454SMBJ8.0CA Datasheet

MFR RecommendedRFQ

SMBJ8V0CA

Taiwan Semiconductor CorporationIn Stock: 4360SMBJ8V0CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMB8J8.0CA-M3/52 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 8V
• Voltage - Clamping (Max) @ Ipp: 13.6V
• Voltage - Breakdown (Min): 8.89V
• Package / Case: DO-214AA, SMB (surface mount)
• Bidirectional Channels: 1
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

Allowable Variation Parameters:

• Current - Peak Pulse (10/1000µs): Minimum 44.1A (substitute parts may have lower peak pulse current than the main part, provided the application does not exceed the substitute's rating)
• Power - Peak Pulse: Minimum 600W (substitute parts may have lower peak pulse power than the main part)
• Operating Temperature Range: Minimum -50°C to 150°C (substitute parts must cover the application's required temperature range)

All identified substitute parts maintain identical voltage specifications and package compatibility, ensuring direct functional interchangeability in circuit designs where the lower peak pulse current and power ratings are acceptable for the intended application.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain Active product status and ROHS3 compliance, confirming ongoing manufacturing support and regulatory alignment. The SMB8J8.0CA-M3/52 offers the highest peak pulse current (58.8A) and power dissipation (800W) ratings. The SMBJ8.0CA (MDD) and SMBJ8V0CA (Taiwan Semiconductor Corporation) are functionally equivalent substitutes with identical voltage specifications but reduced peak pulse ratings (44.2A and 44.1A respectively, with 600W power dissipation).

Selection between the main part and substitutes depends on application peak pulse current requirements. If the circuit transient pulse current does not exceed 44.2A, either substitute part provides equivalent voltage suppression performance. The SMBJ8V0CA maintains the full operating temperature range (-55 to 150°C) matching the main part, while the SMBJ8.0CA operates from -50°C, which may be limiting in extreme low-temperature environments. All parts are available in production quantities with confirmed inventory levels.

Frequently Asked Questions (FAQ)

Q: Can SMBJ8.0CA or SMBJ8V0CA be used as direct replacements for SMB8J8.0CA-M3/52?

A: Yes, both substitute parts are functionally equivalent for applications where the peak pulse current does not exceed 44.2A. All three parts share identical voltage specifications (8V standoff, 13.6V clamping) and use the same DO-214AA (SMB) surface-mount package. Verify that your circuit's transient pulse current remains within the substitute part's 44.2A or 44.1A rating.

Q: What is the difference in peak pulse current between the main part and substitutes?

A: The SMB8J8.0CA-M3/52 is rated for 58.8A peak pulse current with 800W power dissipation. The SMBJ8.0CA and SMBJ8V0CA are each rated for approximately 44.1-44.2A peak pulse current with 600W power dissipation. Select the main part if your application requires transient suppression of pulses exceeding 44.2A.

Q: Are there operating temperature differences between these parts?

A: The SMB8J8.0CA-M3/52 and SMBJ8V0CA both operate across -55 to 150°C. The SMBJ8.0CA operates from -50 to 150°C, which is a 5°C limitation at the low end. Confirm your application's minimum operating temperature before selecting the SMBJ8.0CA for extreme cold environments.

Q: Do all parts use the same package and mounting method?

A: Yes. All three parts use the DO-214AA (SMB) surface-mount package and are mounted identically on PCBs. No layout or footprint changes are required when substituting between these parts.

Q: Are all parts RoHS3 compliant?

A: Yes. The SMB8J8.0CA-M3/52, SMBJ8.0CA, and SMBJ8V0CA are all ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level), meeting current regulatory requirements for electronics manufacturing.

Q: What determines whether a substitute part is acceptable for my circuit?

A: The primary selection criteria are: (1) voltage specifications must match exactly (8V standoff, 13.6V clamping); (2) peak pulse current rating must equal or exceed your circuit's maximum transient current; (3) operating temperature range must cover your application environment; (4) package and mounting type must be compatible with your PCB design. All three parts meet criteria 1, 3, and 4. Criterion 2 determines whether you need the main part (58.8A) or can use a substitute (44.1-44.2A).