SMBJ30D-M3/I Equivalent & Substitute Parts

Part Overview

The SMBJ30D-M3/I is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This surface mount component operates in the DO-214AA (SMB) package and is designed for general-purpose transient voltage suppression applications. The part is currently in active production status with 744 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained within the specified parameter tolerances for this TVS diode category.

Substiute Parts

SMBJ30D-M3/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 846SMBJ30D-M3/I Datasheet

Current PartRFQ

SMBJ30A-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 6561SMBJ30A-E3/5B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ30D-M3/I is determined by strict equivalence in the following electrical and mechanical parameters:

• Reverse Standoff Voltage: 30V nominal
• Package / Case: DO-214AA (SMB) surface mount
• Unidirectional channel configuration: 1 channel
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 150°C (TJ)
• RoHS and compliance status: ROHS3 Compliant

The SMBJ30A-E3/5B meets all substitution criteria. Clamping voltage and peak pulse current remain within acceptable engineering tolerances for the SMBJ30 base product series, with both parts sharing identical reverse standoff voltage, package configuration, and thermal operating range.

Parameter Comparison

Engineering Selection Recommendations

Both the SMBJ30D-M3/I and SMBJ30A-E3/5B are active production components from Vishay General Semiconductor - Diodes Division, classified as TransZorb® series TVS diodes. Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard surface mount assembly and storage protocols. The SMBJ30A-E3/5B offers higher inventory availability (6465 units in stock versus 744 units), making it a viable alternative when supply constraints exist. Selection between these parts depends on application-specific clamping voltage tolerance requirements and component availability at the time of procurement.

Frequently Asked Questions (FAQ)

Q: Can SMBJ30A-E3/5B be used as a direct replacement for SMBJ30D-M3/I?

A: Yes. Both parts share identical reverse standoff voltage (30V), package configuration (DO-214AA SMB), mounting type (surface mount), and operating temperature range (-55°C to 150°C). Clamping voltage and peak pulse current variations fall within acceptable tolerances for the SMBJ30 base product series.

Q: What is the difference in clamping voltage between these parts?

A: The SMBJ30D-M3/I has a maximum clamping voltage of 47.7V, while the SMBJ30A-E3/5B is rated at 48.4V. This 0.7V difference is within the engineering tolerance band for this TVS diode category and does not affect functional compatibility in general-purpose transient suppression applications.

Q: Are both parts suitable for the same PCB assembly process?

A: Yes. Both components use identical DO-214AA (SMB) surface mount packaging and have MSL 1 (Unlimited) moisture sensitivity ratings, making them compatible with standard reflow soldering and storage conditions.

Q: What compliance certifications apply to both parts?

A: Both the SMBJ30D-M3/I and SMBJ30A-E3/5B are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component procurement.