MURD620CT Equivalent & Substitute Parts

Part Overview

The MURD620CT is a diode array rectifier manufactured by onsemi, configured as a 1 Pair Common Cathode design with 200 V DC reverse voltage rating and 3A average rectified current per diode. The device is housed in a TO-252-3 DPAK surface mount package and features fast recovery characteristics with a 35 ns reverse recovery time. The MURD620CT is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Voltage - DC Reverse (Vr) (Max)	200 V
Current - Average Rectified (Io) (per Diode)	3 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 3 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	35 ns
Current - Reverse Leakage @ Vr	5 µA @ 200 V
Operating Temperature - Junction	-65°C ~ 175°C
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MURD620CT is determined by the following critical parameters:

Mandatory Matching Parameters:

Diode Configuration: 1 Pair Common Cathode
Voltage - DC Reverse (Vr) (Max): 200 V
Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type: Surface Mount
Operating Temperature Range: -65°C ~ 175°C

Current Rating Consideration: Substitute parts are grouped into two categories based on average rectified current per diode:

Direct Equivalents (3A): Parts with identical 3A current rating
Higher Current Capability (6A): Parts with 6A current rating, suitable for applications where the MURD620CT 3A specification is a design constraint rather than a requirement

Technology and Performance Variations: Substitute parts may employ different diode technologies (Standard, Avalanche, Super Barrier) and exhibit variations in forward voltage drop, reverse recovery time, and reverse leakage current. These variations are acceptable within the scope of substitution provided all mandatory parameters are met.

Parameter Comparison

Parameter	MURD620CT	VS-MURD620CTHM3	SBR6200CTL-13	VS-MURD620CT-M3	RURD620CCS9A-F085
Manufacturer	onsemi	Vishay	Diodes Inc.	Vishay	onsemi
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V	200 V	200 V
Current - Average Rectified (Io) (per Diode)	3 A	3 A	3 A	6 A	6 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 3 A	1 V @ 3 A	850 mV @ 3 A	1.2 V @ 6 A	1 V @ 6 A
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Standard Recovery > 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Reverse Recovery Time (trr)	35 ns	35 ns	Not specified	19 ns	30 ns
Current - Reverse Leakage @ Vr	5 µA @ 200 V	5 µA @ 200 V	100 µA @ 200 V	5 µA @ 200 V	100 µA @ 200 V
Operating Temperature - Junction	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C
Package / Case	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
AEC-Q101 Qualification	Not qualified	Qualified	Not qualified	Not qualified	Qualified

Engineering Selection Recommendations

Parametric Equivalent - Direct Replacement:

VS-MURD620CTHM3 is the parametric equivalent for the MURD620CT. This part maintains identical electrical specifications including 3A current rating, 1 V forward voltage drop at 3A, and 35 ns reverse recovery time. The VS-MURD620CTHM3 is manufactured by Vishay and carries active product status with ROHS3 compliance and AEC-Q101 automotive qualification. This part is recommended for applications requiring direct electrical and thermal equivalence with the obsolete MURD620CT.

Higher Current Capability Substitutes:

VS-MURD620CT-M3 and RURD620CCS9A-F085 provide 6A current capability while maintaining the 200 V voltage rating and TO-252-3 DPAK package. These parts are suitable for applications where the MURD620CT 3A specification does not represent a hard design limit. The VS-MURD620CT-M3 exhibits superior reverse recovery time (19 ns) compared to the original part. The RURD620CCS9A-F085 employs avalanche technology and carries AEC-Q101 automotive qualification.

Alternative Technology - Super Barrier Diode:

SBR6200CTL-13 manufactured by Diodes Incorporated offers a Super Barrier technology alternative with reduced forward voltage drop (850 mV at 3A). This part maintains the 3A current rating and 200 V voltage specification. The SBR6200CTL-13 exhibits standard recovery characteristics (>500ns) rather than fast recovery, which may impact switching performance in high-frequency applications. This part is ROHS3 compliant but does not carry AEC-Q101 qualification.

Compliance Considerations:

All active substitute parts listed are ROHS3 compliant, addressing regulatory requirements not met by the obsolete MURD620CT. The VS-MURD620CTHM3 and RURD620CCS9A-F085 carry AEC-Q101 automotive qualification, suitable for automotive and mission-critical applications.

Frequently Asked Questions (FAQ)

Q: Can the VS-MURD620CTHM3 be used as a direct replacement for the MURD620CT?

A: Yes. The VS-MURD620CTHM3 is a parametric equivalent with identical electrical specifications: 200 V reverse voltage, 3A average rectified current per diode, 1 V forward voltage drop at 3A, 35 ns reverse recovery time, and 5 µA reverse leakage current at 200 V. Both parts use the same TO-252-3 DPAK package and operate across the -65°C to 175°C junction temperature range. The VS-MURD620CTHM3 is active and ROHS3 compliant.

Q: What is the difference between the 3A and 6A current-rated substitutes?

A: The MURD620CT, VS-MURD620CTHM3, and SBR6200CTL-13 are rated for 3A average rectified current per diode. The VS-MURD620CT-M3 and RURD620CCS9A-F085 are rated for 6A. The 6A-rated parts can handle higher current loads and are suitable for applications where the 3A specification is not a limiting factor. All parts share the same 200 V voltage rating and TO-252-3 DPAK package.

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

A: Yes. The MURD620CT, VS-MURD620CTHM3, and RURD620CCS9A-F085 specify 1 V forward voltage drop at their respective rated currents. The SBR6200CTL-13 specifies 850 mV at 3A, offering lower forward voltage drop due to Super Barrier technology. The VS-MURD620CT-M3 specifies 1.2 V at 6A. Lower forward voltage drop reduces power dissipation in the diode.

Q: What is the significance of reverse recovery time differences?

A: Reverse recovery time (trr) affects switching speed and electromagnetic interference characteristics. The MURD620CT and VS-MURD620CTHM3 specify 35 ns. The VS-MURD620CT-M3 specifies 19 ns (faster), and the RURD620CCS9A-F085 specifies 30 ns. The SBR6200CTL-13 does not specify trr but is classified as standard recovery (>500ns). Faster recovery times reduce switching losses in high-frequency applications.

Q: Which substitute part is recommended for automotive applications?

A: Both VS-MURD620CTHM3 and RURD620CCS9A-F085 carry AEC-Q101 automotive qualification. The VS-MURD620CTHM3 is the parametric equivalent with identical 3A current rating. The RURD620CCS9A-F085 provides 6A capability with avalanche technology and AEC-Q101 qualification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All active substitute parts listed (VS-MURD620CTHM3, SBR6200CTL-13, VS-MURD620CT-M3, and RURD620CCS9A-F085) are ROHS3 compliant. The original MURD620CT is RoHS non-compliant.

Q: Can the SBR6200CTL-13 be used in high-frequency switching applications?

A: The SBR6200CTL-13 is classified as standard recovery (>500ns), which is slower than the fast recovery characteristics of the MURD620CT (35 ns). In high-frequency switching applications where fast recovery is critical, the SBR6200CTL-13 may not be suitable. The VS-MURD620CTHM3, VS-MURD620CT-M3, or RURD620CCS9A-F085 are preferred for such applications.

Q: What is the package compatibility across all substitute parts?

A: All substitute parts use the TO-252-3 DPAK (2 Leads + Tab) surface mount package, identical to the MURD620CT. PCB layout and thermal management considerations remain consistent across all listed parts.

Q: Does reverse leakage current vary significantly between substitutes?

A: Yes. The MURD620CT, VS-MURD620CTHM3, and VS-MURD620CT-M3 specify 5 µA reverse leakage at 200 V. The SBR6200CTL-13 and RURD620CCS9A-F085 specify 100 µA at 200 V. Higher reverse leakage current increases standby power consumption and may impact applications with stringent leakage requirements.

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