MSMBJ75CA Equivalent & Substitute Parts

Part Overview

The MSMBJ75CA is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional Zener diode operates with a reverse standoff voltage of 75V and provides clamping at 121V maximum, with a peak pulse current rating of 4.9A. The component is currently active in production and available in bulk packaging with 946 pieces in stock.

Substitute parts are necessary when the primary manufacturer part becomes unavailable, when alternative sourcing is required for supply chain optimization, or when design flexibility permits selection from qualified equivalent devices that meet identical electrical and mechanical specifications.

Substiute Parts

MSMBJ75CA

Microchip TechnologyIn Stock: 1002MSMBJ75CA Datasheet

Current PartRFQ

SMBJ75CA-13

Diodes IncorporatedIn Stock: 6838SMBJ75CA-13 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MSMBJ75CA is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Voltage - Reverse Standoff (Typ): 75V
• Voltage - Breakdown (Min): 83.3V
• Voltage - Clamping (Max) @ Ipp: 121V
• Current - Peak Pulse (10/1000µs): 4.9A
• Power - Peak Pulse: 600W
• Type: Zener
• Bidirectional Channels: 1

Mechanical Equivalence Requirements:

• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount

Environmental & Compliance Equivalence:

• RoHS Status: RoHS non-compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

The substitute part SMBJ75CA-13 manufactured by Diodes Incorporated meets all electrical and mechanical requirements for direct substitution. This part shares the identical base product number (SMBJ75) and maintains full parameter compatibility with the MSMBJ75CA across voltage ratings, current handling, power dissipation, and package specifications.

Parameter Comparison

*Operating temperature range: SMBJ75CA-13 specifies -55 to 150°C, which does not extend to the -65°C minimum of the MSMBJ75CA. Applications requiring operation below -55°C must use the MSMBJ75CA.

Engineering Selection Recommendations

Primary Selection (MSMBJ75CA): The MSMBJ75CA remains the preferred choice for applications requiring the full operating temperature range of -65°C to 150°C. This part is currently active in production with 946 pieces available in stock. It carries MIL-PRF-19500 military qualification and is suitable for general-purpose transient voltage suppression across the specified voltage and current parameters.

Substitute Selection (SMBJ75CA-13): The SMBJ75CA-13 from Diodes Incorporated is electrically and mechanically equivalent to the MSMBJ75CA for all applications operating within the -55°C to 150°C temperature range. This substitute is currently discontinued at DiGi Electronics but maintains 6,800 pieces in stock through alternative distribution channels. The part is suitable for general-purpose TVS applications where the lower temperature limit of -55°C is acceptable.

Compliance Considerations: Both parts are RoHS non-compliant and carry identical REACH and ECCN classifications (EAR99). Selection between these parts should be based on temperature range requirements and supply chain availability rather than regulatory compliance, as both share identical compliance status.

Frequently Asked Questions (FAQ)

Q: Can SMBJ75CA-13 be used as a direct replacement for MSMBJ75CA in all applications?

A: The SMBJ75CA-13 is electrically and mechanically equivalent for applications operating within -55°C to 150°C. Applications requiring operation below -55°C must use the MSMBJ75CA, as the substitute part does not extend to the -65°C minimum temperature specification.

Q: Are the package dimensions identical between MSMBJ75CA and SMBJ75CA-13?

A: Both parts use the DO-214AA (SMB) surface-mount package. The mechanical footprint and land pattern are identical, permitting direct PCB layout compatibility without modification.

Q: What is the significance of the base product number SMBJ75?

A: The base product number SMBJ75 indicates the 75V reverse standoff voltage rating and SMB package family. Both the MSMBJ75CA and SMBJ75CA-13 share this base designation, confirming their electrical equivalence within the SMBJ75 product line.

Q: Why is SMBJ75CA-13 discontinued at DiGi Electronics if it is equivalent to MSMBJ75CA?

A: Distributor discontinuation does not indicate product obsolescence or technical inadequacy. The SMBJ75CA-13 remains available through alternative distribution channels with substantial inventory (6,800 pieces). Discontinuation at a single distributor reflects inventory management decisions rather than part qualification status.

Q: Are there additional substitute parts listed for SMBJ75CA-13?

A: The SMBJ75CA-13 specification includes cross-references to TV06B750JB-G, SMBJ75CA-13-F, SMBJ75CA, SZ1SMB75CAT3G, and SMBJ75CA-HRA. These represent variant part numbers and manufacturer-specific designations within the equivalent SMBJ75 product family. Verification of electrical and mechanical specifications is required before selection of any cross-referenced part.

Q: What is the moisture sensitivity level (MSL) rating, and why is it relevant?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. These components do not require special moisture-controlled storage or handling procedures and are suitable for standard warehouse and manufacturing environments.

Q: How do the peak pulse power ratings compare?

A: Both MSMBJ75CA and SMBJ75CA-13 are rated for 600W peak pulse power dissipation under 10/1000µs pulse conditions. This identical rating confirms thermal equivalence for transient overvoltage suppression applications.