8EWS08STRR Equivalent & Substitute Parts

Part Overview

The 8EWS08STRR is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 800 V DC reverse voltage and 8 A average rectified current in a surface mount TO-252AA (DPAK) package. This part is classified as obsolete, indicating discontinuation from active production. Identification of equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and ongoing system support.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	800	V
Current - Average Rectified (Io)	8	A
Voltage - Forward (Vf) (Max) @ If	1.1 @ 8 A	V
Current - Reverse Leakage @ Vr	50 @ 800 V	µA
Speed	Standard Recovery >500ns, > 200mA (Io)	-
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	-
Mounting Type	Surface Mount	-
Operating Temperature - Junction	-55 to 150	°C

Substitute Part Grouping Explanation

Substitute parts for the 8EWS08STRR are identified based on strict electrical and mechanical parameter equivalence. The following criteria determine substitution eligibility:

Electrical Parameters (Must Match):

Voltage - DC Reverse (Vr) (Max): 800 V
Current - Average Rectified (Io): 8 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 8 A
Current - Reverse Leakage @ Vr: 50 µA @ 800 V
Speed: Standard Recovery >500ns, > 200mA (Io)

Mechanical Parameters (Must Match):

Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type: Surface Mount
Operating Temperature - Junction: -55°C to 150°C

Both substitute parts listed below satisfy all electrical and mechanical requirements for direct substitution with the 8EWS08STRR.

Parameter Comparison

Parameter	8EWS08STRR	VS-8EWS08STR-M3	VS-8EWS08STRR-M3
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Category	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	800 V	800 V	800 V
Current - Average Rectified (Io)	8 A	8 A	8 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 8 A	1.1 V @ 8 A	1.1 V @ 8 A
Current - Reverse Leakage @ Vr	50 µA @ 800 V	50 µA @ 800 V	50 µA @ 800 V
Speed	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)
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
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Product Status	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

VS-8EWS08STR-M3 is the primary substitute for the obsolete 8EWS08STRR. This part maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance. The part is available in Tape & Reel packaging with 15,400 units in stock, providing reliable supply for production requirements.

VS-8EWS08STRR-M3 is an alternative substitute with equivalent electrical and mechanical parameters. This part also maintains active product status and ROHS3 compliance. Availability is limited to 700 units in stock compared to the primary substitute.

Both substitute parts are manufactured by the same supplier (Vishay General Semiconductor - Diodes Division) and share the same base product number (8EWS08), ensuring design compatibility and performance equivalence. Selection between the two substitutes should be based on inventory availability and packaging requirements.

Frequently Asked Questions (FAQ)

Q: Can VS-8EWS08STR-M3 or VS-8EWS08STRR-M3 be used as direct replacements for 8EWS08STRR?

A: Yes. Both substitute parts meet all electrical parameters (800 V reverse voltage, 8 A average rectified current, 1.1 V forward voltage at 8 A, 50 µA reverse leakage at 800 V, and standard recovery speed) and mechanical specifications (TO-252-3 DPAK package, surface mount, -55°C to 150°C operating temperature range).

Q: What is the difference between the two substitute parts?

A: VS-8EWS08STR-M3 and VS-8EWS08STRR-M3 are electrically and mechanically identical. The primary difference is inventory availability: VS-8EWS08STR-M3 has 15,400 units in stock, while VS-8EWS08STRR-M3 has 700 units in stock.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both VS-8EWS08STR-M3 and VS-8EWS08STRR-M3 are ROHS3 compliant, whereas the original 8EWS08STRR is RoHS non-compliant.

Q: What packaging options are available for the substitute parts?

A: Both substitute parts are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.

Q: Is the TO-252-3 DPAK package compatible with existing PCB designs for the 8EWS08STRR?

A: Yes. Both substitute parts use the identical TO-252-3 DPAK (2 Leads + Tab) SC-63 package, ensuring mechanical and electrical compatibility with existing PCB layouts and assembly processes.

Q: What is the moisture sensitivity level for the substitute parts?

A: Both substitute parts have Moisture Sensitivity Level (MSL) 1 (Unlimited), matching the original part specification.

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