SMBJ20D-M3/H Equivalent & Substitute Parts

Part Overview

The SMBJ20D-M3/H is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 20V reverse standoff voltage class and is designed for general-purpose transient protection applications. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified based on matching electrical performance parameters and identical mechanical packaging to ensure direct interchangeability in circuit applications.

Substiute Parts

SMBJ20D-M3/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 2098SMBJ20D-M3/H Datasheet

Current PartRFQ

SMBJ20A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 6166SMBJ20A-E3/52 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBJ20D-M3/H is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 20V
• Voltage - Clamping (Max) @ Ipp: 32V maximum
• Current - Peak Pulse (10/1000µs): minimum 18.5A
• Package / Case: DO-214AA, SMB (surface mount)
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 150°C (TJ)
• RoHS Compliance: ROHS3 Compliant

The SMBJ20A-E3/52 meets all substitution criteria within the allowed parameter tolerances for this product category. Both parts share identical reverse standoff voltage, compatible clamping voltage specifications, equivalent peak pulse current ratings, and identical mechanical packaging. Both components are manufactured by Vishay General Semiconductor - Diodes Division within the TransZorb® series and maintain active product status with full RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

Both the SMBJ20D-M3/H and SMBJ20A-E3/52 are active production components with identical RoHS3 compliance status and REACH unaffected classification. Selection between these parts is based on availability and inventory status. The SMBJ20A-E3/52 is the manufacturer-recommended substitute and maintains full electrical and mechanical compatibility with the SMBJ20D-M3/H. Both components are classified as unidirectional Zener-type TVS diodes within the TransZorb® series and are suitable for general-purpose transient voltage suppression applications requiring surface mount DO-214AA packaging.

Frequently Asked Questions (FAQ)

Q: Can SMBJ20A-E3/52 be used as a direct replacement for SMBJ20D-M3/H?

A: Yes. Both parts share identical reverse standoff voltage (20V), compatible clamping voltage specifications (32V vs 32.4V), equivalent peak pulse current ratings (18.8A vs 18.5A), and identical DO-214AA surface mount packaging. Electrical performance and mechanical compatibility are maintained.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by reverse standoff voltage (20V), clamping voltage maximum (32V), peak pulse current minimum (18.5A), package type (DO-214AA, SMB), mounting method (surface mount), and operating temperature range (-55°C to 150°C TJ). All parameters must remain within specified tolerances.

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

A: No. Both SMBJ20D-M3/H and SMBJ20A-E3/52 maintain identical RoHS3 compliance, REACH unaffected status, and MSL 1 (unlimited) moisture sensitivity rating. Both are active production components manufactured by Vishay General Semiconductor - Diodes Division.

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

A: The SMBJ20D-M3/H specifies a maximum clamping voltage of 32V, while the SMBJ20A-E3/52 specifies 32.4V. This 0.4V difference falls within acceptable substitution tolerances for general-purpose TVS diode applications and does not affect circuit compatibility.

Q: Are both parts available in the same packaging format?

A: Yes. Both components use identical DO-214AA (SMB) surface mount packaging with tape and reel (TR) distribution format. PCB footprints and assembly processes are identical.