MSRD620CTG Equivalent & Substitute Parts

Part Overview

The MSRD620CTG is a diode array rectifier manufactured by onsemi, configured as a 1 Pair Common Cathode with 200 V reverse voltage rating and 3 A average rectified current per diode. The device is housed in a TO-252-3 DPAK surface mount package and belongs to the SWITCHMODE™ series. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support, maintenance, and production continuity. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating the same physical package footprint.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io) (per Diode)	3	A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 3 A	V
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	55	ns
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Operating Temperature - Junction	-55 to 175	°C
Diode Configuration	1 Pair Common Cathode	—
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MSRD620CTG is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 200 V minimum
Diode Configuration: 1 Pair Common Cathode
Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type: Surface Mount
Current - Average Rectified (Io) (per Diode): Equal to or greater than 3 A

Acceptable Variation Parameters:

Current - Average Rectified (Io): Substitute parts rated at 3 A or higher are acceptable, as higher current ratings provide design margin
Voltage - Forward (Vf): Substitute parts with equal or lower forward voltage drop are acceptable
Reverse Recovery Time (trr): Substitute parts with equal or faster recovery time are acceptable
Operating Temperature Range: Substitute parts with equal or wider temperature range are acceptable
Technology: Standard, Fast Recovery, Avalanche, and Super Barrier technologies are all acceptable provided electrical parameters are met

Substitute parts that exceed the minimum electrical specifications while maintaining identical package and configuration are considered direct replacements.

Parameter Comparison

Parameter	MSRD620CTG	RURD620CCS9A-F085	SBR6200CTL-13	STTH1002CB	STTH1002CB-TR	STTH802CB-TR	VS-MURD620CT-M3	VS-MURD620CTTR-M3
Manufacturer	onsemi	onsemi	Diodes Incorporated	STMicroelectronics	STMicroelectronics	STMicroelectronics	Vishay	Vishay
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V	200 V	200 V	200 V	200 V	200 V
Current - Average Rectified (Io) (per Diode)	3 A	6 A	3 A	8 A	8 A	4 A	6 A	6 A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 3 A	1 V @ 6 A	850 mV @ 3 A	1.1 V @ 5 A	1.1 V @ 5 A	1.1 V @ 4 A	1.2 V @ 6 A	1.2 V @ 6 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Standard Recovery > 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	55 ns	30 ns	Not specified	25 ns	25 ns	20 ns	19 ns	19 ns
Current - Reverse Leakage @ Vr	5 µA @ 200 V	100 µA @ 200 V	100 µA @ 200 V	5 µA @ 200 V	5 µA @ 200 V	4 µA @ 200 V	5 µA @ 200 V	5 µA @ 200 V
Operating Temperature - Junction	-55 to 175 °C	-65 to 175 °C	-65 to 175 °C	175 °C (Max)	175 °C (Max)	175 °C (Max)	-65 to 175 °C	-65 to 175 °C
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Package / Case	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

The following parts are recommended as primary substitutes based on matching current ratings and active product status:

SBR6200CTL-13 (Diodes Incorporated): Matches the 3 A current rating of the MSRD620CTG. Active product status ensures long-term availability. Super Barrier technology provides lower forward voltage (850 mV @ 3 A) compared to the original part. ROHS3 compliant with unlimited MSL rating.
STTH802CB-TR (STMicroelectronics): Rated at 4 A, providing 33% design margin above the 3 A requirement. Fast recovery characteristics with 20 ns reverse recovery time. Active product status with AEC-Q101 automotive qualification. ROHS3 compliant.

Secondary Substitutes (Higher Current Ratings):

The following parts provide higher current ratings suitable for applications requiring additional thermal or electrical margin:

RURD620CCS9A-F085 (onsemi): Rated at 6 A with Avalanche technology. Faster reverse recovery time (30 ns) than the original part. AEC-Q101 automotive qualified. Active product status. ROHS3 compliant.
VS-MURD620CT-M3 and VS-MURD620CTTR-M3 (Vishay): Both rated at 6 A with FRED Pt® series designation. Fastest reverse recovery time (19 ns) among all substitutes. Active product status. ROHS3 compliant. Difference between models is packaging format (Tube vs. Tape & Reel).
STTH1002CB and STTH1002CB-TR (STMicroelectronics): Rated at 8 A, providing maximum design margin. Fast recovery with 25 ns reverse recovery time. STTH1002CB-TR includes AEC-Q101 automotive qualification. Both active products. ROHS3 compliant. Difference between models is packaging format (Tube vs. Cut Tape & Digi-Reel®).

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and unlimited MSL rating (1) identical to the original MSRD620CTG. All parts are surface mount devices in TO-252-3 DPAK package with identical pinout configuration. Selection between substitutes should be based on application requirements for current capacity, reverse recovery speed, and packaging format availability.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part rated at higher current than the MSRD620CTG?

A: Yes. Substitute parts rated at 4 A, 6 A, or 8 A are acceptable replacements for the 3 A MSRD620CTG. Higher current ratings provide design margin and do not create compatibility issues in circuits designed for the original 3 A part. The device will operate within its rated specifications at the lower current levels required by the original design.

Q: What is the difference between STTH1002CB and STTH1002CB-TR?

A: Both parts are electrically identical with 8 A current rating and 200 V reverse voltage. The primary difference is packaging format: STTH1002CB is supplied in Tube packaging, while STTH1002CB-TR is supplied in Cut Tape & Digi-Reel® format. STTH1002CB-TR additionally carries AEC-Q101 automotive qualification. Selection depends on procurement and assembly requirements.

Q: What is the difference between VS-MURD620CT-M3 and VS-MURD620CTTR-M3?

A: Both parts are electrically identical with 6 A current rating and 200 V reverse voltage. The primary difference is packaging format: VS-MURD620CT-M3 is supplied in Tube packaging, while VS-MURD620CTTR-M3 is supplied in Tape & Reel format. Selection depends on procurement and assembly requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant with unlimited MSL rating (1), matching the environmental compliance profile of the original MSRD620CTG.

Q: Can I use SBR6200CTL-13 as a direct replacement?

A: Yes. The SBR6200CTL-13 is a direct replacement with identical 3 A current rating and 200 V reverse voltage. It uses Super Barrier technology with lower forward voltage (850 mV @ 3 A) compared to the original part (1.15 V @ 3 A). The device is housed in the same TO-252-3 DPAK package with identical pinout. Active product status ensures availability.

Q: Which substitute has the fastest reverse recovery time?

A: The VS-MURD620CT-M3 and VS-MURD620CTTR-M3 (both Vishay FRED Pt® series) have the fastest reverse recovery time at 19 ns. The STTH1002CB and STTH1002CB-TR follow at 25 ns. Faster recovery times reduce switching losses in high-frequency applications.

Q: Is the MSRD620CTG still available for purchase?

A: The MSRD620CTG is classified as obsolete. Substitute parts with active product status should be used for new designs and ongoing production. All listed substitute parts are currently active and available from manufacturers.

Q: Do all substitute parts fit the same PCB footprint?

A: Yes. All substitute parts use the TO-252-3 DPAK package with identical physical dimensions and pinout. They are direct mechanical replacements requiring no PCB layout modifications.

Q: Which substitute part should I choose for automotive applications?

A: For automotive applications, select parts with AEC-Q101 qualification: RURD620CCS9A-F085 (6 A), STTH1002CB-TR (8 A), or STTH802CB-TR (4 A). These parts meet automotive industry reliability and qualification standards.

Q: Can I use STTH802CB-TR as a substitute?

A: Yes. The STTH802CB-TR is rated at 4 A, providing 33% design margin above the 3 A requirement of the MSRD620CTG. It features fast recovery characteristics with 20 ns reverse recovery time and is ROHS3 compliant. Active product status ensures availability.

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