UH2D-M3/5BT Equivalent & Substitute Parts

Part Overview

The UH2D-M3/5BT is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 200 V DC reverse voltage and 2 A average rectified current in a DO-214AA (SMB) surface mount package. This part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement continuity. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while meeting the same packaging and compliance requirements.

Substiute Parts

UH2D-M3/5BT

Vishay General Semiconductor - Diodes DivisionIn Stock: 840UH2D-M3/5BT Datasheet

Current PartRFQ

VS-2EGH02-M3/5BT

Vishay General Semiconductor - Diodes DivisionIn Stock: 1232VS-2EGH02-M3/5BT Datasheet

DirectRFQ

SURS8115T3G-VF01

onsemiIn Stock: 868SURS8115T3G-VF01 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UH2D-M3/5BT is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 200 V
• Current - Average Rectified (Io): Must equal or exceed 2 A
• Package / Case: Must be DO-214AA (SMB) surface mount
• Speed Classification: Must be Fast Recovery ≤ 500ns, > 200mA (Io)
• Operating Temperature Range: Must encompass -55°C to 175°C junction temperature
• RoHS and Compliance Status: Must maintain ROHS3 compliance

Direct Equivalent (Preferred): The VS-2EGH02-M3/5BT meets all primary substitution criteria with identical voltage and current ratings, matching package specification, and active product status.

Partial Substitute (Voltage/Current Derating Required): The SURS8115T3G-VF01 operates at reduced voltage (150 V) and current (1 A) ratings compared to the UH2D-M3/5BT. This part is suitable only for applications where the circuit design can accommodate lower electrical ratings. The SURS8115T3G-VF01 includes automotive-grade qualification (AEC-Q101) and extended temperature range (-65°C to 175°C).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Recommended): The VS-2EGH02-M3/5BT is the primary substitute for the obsolete UH2D-M3/5BT. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and maintain identical electrical ratings (200 V, 2 A). The VS-2EGH02-M3/5BT is active in production with higher inventory availability (1150 pcs vs. 802 pcs). Both parts carry ROHS3 compliance, MSL 1 rating, and identical operating temperature ranges. The VS-2EGH02-M3/5BT exhibits improved reverse recovery time (23 ns vs. 40 ns) and lower forward voltage drop (900 mV vs. 1.05 V @ 2 A), providing enhanced performance characteristics.

For Automotive or Extended Temperature Applications: The SURS8115T3G-VF01 is suitable only for circuits designed to operate within 150 V and 1 A electrical limits. This part carries AEC-Q101 automotive qualification and extends the lower operating temperature to -65°C. Selection of this part requires circuit redesign or derating analysis to confirm compatibility with reduced voltage and current specifications. ROHS3 compliance and MSL 1 rating are maintained.

Compliance and Regulatory Considerations: All three parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 (unlimited moisture sensitivity). All parts are classified under ECCN EAR99 and HTSUS 8541.10.0080. No additional regulatory constraints apply to substitution decisions.

Frequently Asked Questions (FAQ)

Q: Can the VS-2EGH02-M3/5BT be used as a direct replacement for the UH2D-M3/5BT?

A: Yes. The VS-2EGH02-M3/5BT is a direct equivalent with identical voltage (200 V) and current (2 A) ratings, matching package specification (DO-214AA, SMB), and identical operating temperature range (-55°C to 175°C). Both parts are ROHS3 compliant with MSL 1 rating. The VS-2EGH02-M3/5BT is active in production and available in higher quantities.

Q: What are the limitations of using the SURS8115T3G-VF01 as a substitute?

A: The SURS8115T3G-VF01 operates at reduced electrical ratings: 150 V maximum reverse voltage (vs. 200 V) and 1 A average rectified current (vs. 2 A). This part is suitable only for applications where the circuit design accommodates these lower ratings. Voltage and current derating analysis is required before selection.

Q: Are there package compatibility concerns when substituting these parts?

A: All three parts use the DO-214AA (SMB) surface mount package. Physical dimensions and PCB footprints are compatible. No package-related design modifications are required for substitution.

Q: Does the improved reverse recovery time of the VS-2EGH02-M3/5BT affect circuit performance?

A: The VS-2EGH02-M3/5BT exhibits faster reverse recovery (23 ns vs. 40 ns) and lower forward voltage drop (900 mV vs. 1.05 V @ 2 A). These characteristics represent performance improvements that do not negatively impact circuit compatibility. Circuits designed for the UH2D-M3/5BT will operate within specification with the VS-2EGH02-M3/5BT.

Q: Is automotive qualification required for my application?

A: Automotive qualification (AEC-Q101) is provided only by the SURS8115T3G-VF01. If your application requires automotive-grade components, this part is the only option among the three listed. However, voltage and current derating requirements must be evaluated.

Q: What is the inventory status for each substitute part?

A: VS-2EGH02-M3/5BT: 1150 pcs new original in stock. SURS8115T3G-VF01: 820 pcs new original in stock. Both parts are available in production quantities.

Q: Are there differences in forward voltage drop between these parts?

A: Yes. The UH2D-M3/5BT specifies 1.05 V @ 2 A. The VS-2EGH02-M3/5BT specifies 900 mV @ 2 A (lower). The SURS8115T3G-VF01 specifies 875 mV @ 1 A. Lower forward voltage drop reduces power dissipation and heat generation in the circuit.