MSRD620CTT4RG Equivalent & Substitute Parts

Part Overview

The MSRD620CTT4RG is a diode array rectifier manufactured by onsemi, configured as a 1 Pair Common Anode design with 200 V reverse voltage rating and 3 A average rectified current per diode. The device is packaged in a Surface Mount TO-252-3 DPAK format with fast recovery characteristics suitable for switching applications. This part carries a Last Time Buy product status, indicating discontinued production with limited inventory availability. Identification of equivalent and substitute parts is necessary to ensure design continuity and long-term supply chain reliability for applications currently utilizing this component.

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
Reverse Recovery Time (trr)	75	ns
Current - Reverse Leakage @ Vr	1	µA @ 200 V
Operating Temperature - Junction	-55 to 175	°C
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	—
Diode Configuration	1 Pair Common Anode	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the MSRD620CTT4RG is determined by alignment of critical electrical and mechanical parameters: reverse voltage rating (Vr), average rectified current per diode (Io), forward voltage drop (Vf), reverse recovery time (trr), package type, and diode configuration (common anode or common cathode).

Parametric Equivalent Classification: Parts that maintain identical or superior electrical specifications across all critical parameters while preserving the same package format and diode configuration enable direct substitution without circuit redesign.

Similar Part Classification: Parts that share the same reverse voltage rating and package format but differ in current rating, diode configuration, or recovery characteristics require circuit-level evaluation to confirm compatibility with the application's specific requirements.

The following key parameters determine substitution eligibility:

Voltage - DC Reverse (Vr) (Max): 200 V minimum
Package / Case: TO-252-3, DPAK format
Mounting Type: Surface Mount
Diode Configuration: Common Anode or Common Cathode (application-dependent)
Current - Average Rectified (Io): Application-dependent threshold

Parameter Comparison

Parameter	MSRD620CTT4RG (Main)	NRVSRD620VCTT4RG (Parametric Equivalent)	VS-MURD620CTTR-M3 (Similar)
Manufacturer	onsemi	onsemi	Vishay General Semiconductor - Diodes Division
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V
Current - Average Rectified (Io) (per Diode)	3 A	3 A	6 A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 3 A	1.15 V @ 3 A	1.2 V @ 6 A
Reverse Recovery Time (trr)	75 ns	75 ns	19 ns
Current - Reverse Leakage @ Vr	1 µA @ 200 V	1 µA @ 200 V	5 µA @ 200 V
Operating Temperature - Junction	-55 to 175 °C	-65 to 175 °C	-65 to 175 °C
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63
Diode Configuration	1 Pair Common Anode	1 Pair Common Anode	1 Pair Common Cathode
Product Status	Last Time Buy	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

NRVSRD620VCTT4RG (Parametric Equivalent - Recommended Primary Substitute):

The NRVSRD620VCTT4RG is classified as a parametric equivalent to the MSRD620CTT4RG. Both devices share identical electrical specifications: 200 V reverse voltage, 3 A average rectified current per diode, 1.15 V forward voltage drop at 3 A, 75 ns reverse recovery time, and 1 µA reverse leakage current at 200 V. Both maintain the same TO-252-3 DPAK package format and 1 Pair Common Anode diode configuration. The NRVSRD620VCTT4RG carries Active product status with 1082 units in stock, providing supply continuity. The operating temperature range extends to -65°C (compared to -55°C for the main part), offering enhanced low-temperature performance. Both parts are ROHS3 Compliant with MSL 1 rating. Direct substitution is supported without circuit modification.

VS-MURD620CTTR-M3 (Similar Part - Conditional Substitution):

The VS-MURD620CTTR-M3 manufactured by Vishay shares the 200 V reverse voltage rating and TO-252-3 DPAK package format. However, this part differs in three critical parameters: current rating (6 A versus 3 A per diode), diode configuration (1 Pair Common Cathode versus Common Anode), and reverse recovery time (19 ns versus 75 ns). The higher current rating and faster recovery time represent performance enhancements suitable for applications with higher current demands or stricter switching speed requirements. The Common Cathode configuration requires circuit topology verification to confirm compatibility with the original Common Anode design. This part is Active with 2300 units in stock. Substitution requires circuit-level analysis to confirm pin compatibility and functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can NRVSRD620VCTT4RG be used as a direct replacement for MSRD620CTT4RG?

A: Yes. The NRVSRD620VCTT4RG is a parametric equivalent with identical electrical specifications and package format. Both devices feature 200 V reverse voltage, 3 A average rectified current per diode, 1.15 V forward voltage drop, 75 ns reverse recovery time, and 1 Pair Common Anode configuration in TO-252-3 DPAK packaging. Direct substitution is supported without circuit redesign.

Q: What is the difference between Common Anode and Common Cathode diode configurations?

A: Diode configuration determines the internal connection topology of the diode pair within the package. Common Anode configuration connects the anode terminals of both diodes to a single pin, while Common Cathode configuration connects the cathode terminals to a single pin. These configurations require different circuit connections and are not interchangeable without circuit modification.

Q: Can VS-MURD620CTTR-M3 replace MSRD620CTT4RG in all applications?

A: VS-MURD620CTTR-M3 shares the same 200 V reverse voltage rating and TO-252-3 DPAK package but differs in three parameters: 6 A current rating (versus 3 A), Common Cathode configuration (versus Common Anode), and 19 ns reverse recovery time (versus 75 ns). Substitution requires verification that the application circuit topology supports Common Cathode configuration and that the higher current rating and faster recovery characteristics are compatible with the circuit design.

Q: What does "Last Time Buy" product status mean for MSRD620CTT4RG?

A: Last Time Buy status indicates that the manufacturer has discontinued production of this part. The 10100 units currently in stock represent the final available inventory. Once depleted, the part will no longer be available from the manufacturer. Transition to an active substitute part is recommended for long-term supply chain planning.

Q: Are all three parts RoHS3 Compliant?

A: Yes. MSRD620CTT4RG, NRVSRD620VCTT4RG, and VS-MURD620CTTR-M3 are all ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited). All parts meet REACH Unaffected status and carry EAR99 ECCN classification.

Q: What is the significance of reverse recovery time (trr) in diode selection?

A: Reverse recovery time is the interval required for a diode to transition from forward conduction to reverse blocking state. Shorter recovery times reduce switching losses and electromagnetic interference in high-frequency switching applications. MSRD620CTT4RG and NRVSRD620VCTT4RG both feature 75 ns recovery time, while VS-MURD620CTTR-M3 offers 19 ns, enabling faster switching performance in demanding applications.

Q: Do all substitute parts use the same DPAK package?

A: Yes. MSRD620CTT4RG, NRVSRD620VCTT4RG, and VS-MURD620CTTR-M3 all use the TO-252-3 DPAK (2 Leads + Tab) SC-63 package format. PCB layout and thermal management considerations remain consistent across all three parts.

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