Equivalent & Substitute Parts for 8EWF02S

Part Overview

The 8EWF02S is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 200 V DC reverse voltage and 8 A average rectified current. The device is packaged in a Surface Mount TO-252AA (DPAK) configuration with fast recovery characteristics. The 8EWF02S is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. Substitute parts must maintain electrical performance and mechanical compatibility while offering current product availability and compliance status.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	8	A
Voltage - Forward (Vf) (Max) @ If	1.2 @ 8 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Mounting Type	Surface Mount	—
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	—
Operating Temperature - Junction	-40 to 150	°C

Substitute Part Grouping Explanation

Substitution of the 8EWF02S is determined by strict equivalence across the following electrical and mechanical parameters:

Voltage Rating: 200 V DC reverse voltage (Vr) maximum
Current Rating: 8 A average rectified current (Io)
Forward Voltage: 1.2 V maximum at 8 A forward current
Speed Classification: Fast recovery diode with recovery time ≤ 500 ns for currents > 200 mA
Package Type: Surface mount TO-252-3 DPAK configuration
Operating Temperature Range: -40°C to 150°C junction temperature

The substitute part VS-8EWF02S-M3 meets all electrical specifications and maintains identical mechanical compatibility. The primary distinction between the main part and substitute is product status (obsolete versus active) and compliance certifications.

Parameter Comparison

Parameter	8EWF02S	VS-8EWF02S-M3	Match
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Yes
Category	Diodes, Rectifiers	Diodes, Rectifiers	Yes
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	Yes
Current - Average Rectified (Io)	8 A	8 A	Yes
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 8 A	1.2 V @ 8 A	Yes
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Yes
Reverse Recovery Time (trr)	140 ns	55 ns	Compatible
Current - Reverse Leakage @ Vr	100 µA @ 200 V	100 µA @ 200 V	Yes
Mounting Type	Surface Mount	Surface Mount	Yes
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	Yes
Operating Temperature - Junction	-40°C ~ 150°C	-40°C ~ 150°C	Yes
Product Status	Obsolete	Active	Upgrade
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Improved

Engineering Selection Recommendations

The VS-8EWF02S-M3 is the direct parametric equivalent for the obsolete 8EWF02S. Selection of VS-8EWF02S-M3 is based on the following factors:

Electrical Equivalence: All critical electrical parameters are identical, including reverse voltage rating (200 V), average rectified current (8 A), forward voltage drop (1.2 V @ 8 A), and reverse leakage current (100 µA @ 200 V). The reverse recovery time of 55 ns in the substitute part is superior to the 140 ns specification of the main part, representing improved performance within the fast recovery classification.

Mechanical Compatibility: Both parts utilize identical Surface Mount TO-252-3 DPAK packaging, ensuring direct board-level substitution without layout modifications.

Product Status and Compliance: The VS-8EWF02S-M3 is classified as active product with ROHS3 compliance, addressing the obsolescence of the 8EWF02S and meeting current regulatory requirements. Both parts maintain REACH Unaffected status and EAR99 export classification.

Inventory Availability: The VS-8EWF02S-M3 is available in active inventory (1888 pcs), supporting production continuity.

Frequently Asked Questions (FAQ)

Q: Can VS-8EWF02S-M3 be used as a direct replacement for 8EWF02S in existing designs?

A: Yes. The VS-8EWF02S-M3 meets all electrical specifications and maintains identical mechanical compatibility through the TO-252-3 DPAK package. No circuit modifications or board redesign are required.

Q: What is the significance of the different reverse recovery times (140 ns vs. 55 ns)?

A: Both parts meet the fast recovery classification (≤ 500 ns for currents > 200 mA). The 55 ns recovery time of VS-8EWF02S-M3 represents improved switching performance compared to the 140 ns specification of 8EWF02S. This improvement does not create incompatibility and may enhance circuit efficiency.

Q: Are there packaging differences between the two parts?

A: No. Both parts are supplied in TO-252-3 DPAK (2 Leads + Tab) SC-63 Surface Mount packages. The only packaging distinction is that VS-8EWF02S-M3 is supplied in Tube packaging, while 8EWF02S packaging type is not specified in available data.

Q: What compliance advantages does VS-8EWF02S-M3 offer?

A: VS-8EWF02S-M3 is ROHS3 compliant, whereas 8EWF02S is RoHS non-compliant. This compliance status is required for products entering markets with RoHS regulations. Both parts maintain REACH Unaffected status.

Q: Is the VS-8EWF02S-M3 suitable for new product designs?

A: Yes. The VS-8EWF02S-M3 is classified as active product with current inventory availability, making it appropriate for new designs requiring 200 V, 8 A general-purpose rectifier diodes in Surface Mount DPAK configuration.

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