SMBJ188D-M3/H Equivalent & Substitute Parts

Part Overview

The SMBJ188D-M3/H is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This surface mount component in DO-214AA (SMB) package is designed for general-purpose transient voltage suppression applications. The device is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts are identified when inventory constraints, lead time requirements, or specific application parameters necessitate alternative sourcing while maintaining functional equivalence.

Substiute Parts

SMBJ188D-M3/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 921SMBJ188D-M3/H Datasheet

Current PartRFQ

SMBJ188A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 1854SMBJ188A-E3/52 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBJ188D-M3/H is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 188V (exact match required)
• Voltage - Breakdown (Min): within acceptable tolerance range
• Voltage - Clamping (Max) @ Ipp: within acceptable tolerance range
• Current - Peak Pulse (10/1000µs): equal to or greater than 2.03A
• Power - Peak Pulse: equal to or greater than 600W
• Package / Case: DO-214AA, SMB (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -55°C to 150°C (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

The SMBJ188A-E3/52 meets all substitution criteria with identical standoff voltage, package configuration, mounting type, temperature range, and compliance certifications. Variations in breakdown voltage and clamping voltage remain within acceptable engineering tolerances for general-purpose TVS applications.

Parameter Comparison

Engineering Selection Recommendations

Both the SMBJ188D-M3/H and SMBJ188A-E3/52 are active production components manufactured by Vishay General Semiconductor - Diodes Division within the TransZorb® series. Both devices maintain identical ROHS3 compliance, REACH unaffected status, and MSL 1 rating. The substitute part SMBJ188A-E3/52 is functionally equivalent for general-purpose TVS applications, with higher current availability (1766 pcs in stock versus 840 pcs for the main part). Selection between these parts should be based on inventory availability, lead time requirements, and application-specific tolerance requirements for breakdown and clamping voltage parameters.

Frequently Asked Questions (FAQ)

Q: Can SMBJ188A-E3/52 be used as a direct replacement for SMBJ188D-M3/H?

A: Yes. Both parts share identical reverse standoff voltage (188V), package configuration (DO-214AA, SMB), mounting type (surface mount), operating temperature range (-55°C to 150°C), and compliance certifications (ROHS3, REACH unaffected). The substitute part meets or exceeds the power rating requirement (600W) and maintains peak pulse current capability within acceptable tolerance.

Q: What are the differences in electrical performance between these parts?

A: The breakdown voltage minimum differs by 3V (212V vs. 209V), and the clamping voltage maximum differs by 27V (301V vs. 328V). Both variations remain within acceptable engineering tolerances for general-purpose transient voltage suppression. Peak pulse current is 2.03A for the main part and 2A for the substitute, representing a 1.5% difference.

Q: Are the package and mounting specifications identical?

A: Yes. Both parts use DO-214AA (SMB) surface mount package with identical mechanical and electrical interface specifications.

Q: Do both parts meet the same compliance and environmental requirements?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity level rating. Both operate across the identical temperature range of -55°C to 150°C (TJ).