MURB1620CTRG Equivalent & Substitute Parts

Part Overview

The MURB1620CTRG is a diode array rectifier manufactured by onsemi, configured as a 1 Pair Common Anode design with a maximum reverse voltage rating of 200 V and average rectified current of 8 A per diode. The device is packaged in a TO-263-3 D2PAK surface mount configuration and belongs to the SWITCHMODE™ series. This part is currently classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support, production continuity, and system maintenance.

Substiute Parts

MURB1620CTRG

onsemiIn Stock: 2194MURB1620CTRG Datasheet

Current PartRFQ

DURB2020CT

Littelfuse Inc.In Stock: 24665DURB2020CT Datasheet

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VS-MURB1620CT-M3

Vishay General Semiconductor - Diodes DivisionIn Stock: 5285VS-MURB1620CT-M3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MURB1620CTRG is determined by the following critical parameters: maximum reverse voltage (Vr), average rectified current per diode (Io), package type (TO-263-3 D2PAK), mounting method (surface mount), and diode configuration (common anode or common cathode). The reverse recovery time (trr) and forward voltage (Vf) are secondary considerations that affect performance characteristics but do not preclude substitution when primary electrical ratings are met or exceeded.

Two substitute parts are identified:

VS-MURB1620CT-M3 (Vishay General Semiconductor): Matches the primary electrical specifications (200 V, 8 A) and package type. Configuration differs (common cathode vs. common anode), requiring circuit topology verification. Offers improved reverse recovery time (35 ns vs. 85 ns) and lower forward voltage (975 mV vs. 1.2 V at 8 A). Active product status ensures ongoing availability.

DURB2020CT (Littelfuse Inc.): Exceeds primary electrical specifications with higher current rating (10 A vs. 8 A) while maintaining 200 V reverse voltage and TO-263-3 D2PAK package compatibility. Configuration differs (common cathode vs. common anode). Offers superior reverse recovery time (35 ns vs. 85 ns). Active product status with high inventory availability.

Parameter Comparison

Engineering Selection Recommendations

VS-MURB1620CT-M3 is suitable for direct replacement in applications where the diode configuration change from common anode to common cathode is accommodated by circuit design. This part maintains identical electrical ratings (200 V, 8 A) and temperature range (-65 to 175 °C), with the added benefit of improved reverse recovery time and lower forward voltage drop. Active product status and ROHS3 compliance support long-term design continuity. Inventory availability (5202 pcs) supports production requirements.

DURB2020CT is suitable for applications where the higher current rating (10 A vs. 8 A) provides design margin and the diode configuration change is accommodated by circuit design. The 200 V reverse voltage rating matches the original specification. The reduced operating temperature range (-55 to 150 °C vs. -65 to 175 °C) must be verified against application requirements. Active product status and ROHS3 compliance are confirmed. High inventory availability (24654 pcs) supports production continuity.

Both substitute parts are surface mount devices in TO-263-3 D2PAK packaging, maintaining mechanical and thermal interface compatibility with the original MURB1620CTRG.

Frequently Asked Questions (FAQ)

Q: Can VS-MURB1620CT-M3 be used as a direct pin-for-pin replacement for MURB1620CTRG?

A: The parts share identical TO-263-3 D2PAK packaging and pinout compatibility. However, the diode configuration differs (common cathode vs. common anode). Pin-for-pin substitution requires verification that the circuit topology accommodates the configuration change. Consult the application schematic to confirm compatibility.

Q: What is the primary difference between MURB1620CTRG and DURB2020CT?

A: Both parts maintain 200 V reverse voltage and TO-263-3 D2PAK packaging. DURB2020CT provides higher current capacity (10 A vs. 8 A per diode) and faster reverse recovery time (35 ns vs. 85 ns). The diode configuration differs (common cathode vs. common anode), and the operating temperature range is narrower (-55 to 150 °C vs. -65 to 175 °C).

Q: Why is the MURB1620CTRG classified as obsolete?

A: The MURB1620CTRG is listed as obsolete by the manufacturer. Substitute parts with active product status (VS-MURB1620CT-M3 and DURB2020CT) are recommended for new designs and ongoing production support.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. MURB1620CTRG, VS-MURB1620CT-M3, and DURB2020CT are all ROHS3 compliant. All parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements.

Q: How does reverse recovery time affect circuit performance?

A: Reverse recovery time (trr) is the time required for a diode to switch from forward conduction to reverse blocking. VS-MURB1620CT-M3 and DURB2020CT both feature 35 ns recovery time, compared to 85 ns for MURB1620CTRG. Faster recovery reduces switching losses and improves efficiency in high-frequency applications. The original specification must be reviewed to determine if improved recovery time is beneficial or if circuit design depends on the original timing characteristics.

Q: What is the significance of forward voltage (Vf) differences?

A: Forward voltage drop affects power dissipation and thermal management. VS-MURB1620CT-M3 exhibits lower forward voltage (975 mV @ 8 A) compared to MURB1620CTRG (1.2 V @ 8 A), resulting in reduced power loss. DURB2020CT forward voltage is 1.15 V @ 10 A. Lower forward voltage improves efficiency but must be evaluated against the specific application's thermal and power budget requirements.

Q: Can DURB2020CT be used in applications requiring the full -65 to 175 °C temperature range?

A: DURB2020CT operates over -55 to 150 °C, which is narrower than the original MURB1620CTRG range (-65 to 175 °C). Applications requiring operation below -55 °C or above 150 °C must use VS-MURB1620CT-M3, which maintains the full -65 to 175 °C range.

Q: What packaging considerations apply to these substitute parts?

A: All three parts use TO-263-3 D2PAK surface mount packaging with identical mechanical dimensions and thermal characteristics. PCB layout and thermal management design remain unchanged. Tape & Reel packaging (DURB2020CT) and Tube packaging (VS-MURB1620CT-M3) affect supply chain logistics but not electrical or mechanical performance.