6CWQ03FN Equivalent & Substitute Parts

Part Overview

The 6CWQ03FN is a Schottky diode array manufactured by Vishay General Semiconductor - Diodes Division, configured as a 1 Pair Common Cathode arrangement rated for 30 V DC reverse voltage and 3.5 A average rectified current per diode. The device is housed in a TO-252-3 DPAK surface mount package with two leads and a tab (SC-63).

The 6CWQ03FN is classified as obsolete. Locating equivalent substitute parts is necessary to support ongoing production requirements, maintenance operations, and design continuity for applications currently utilizing this component.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V
Current - Average Rectified (Io) (per Diode)	3.5 A
Voltage - Forward (Vf) (Max) @ If	450 mV @ 3 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Operating Temperature - Junction	-40°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Supplier Device Package	TO-252AA (DPAK)

Substitute Part Grouping Explanation

Substitute parts for the 6CWQ03FN are identified based on electrical and mechanical parameter equivalence. The substitution criteria are strictly limited to the following parameters:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 30 V
Current - Average Rectified (Io) (per Diode): 3.5 A
Voltage - Forward (Vf) (Max) @ If: 450 mV @ 3 A
Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)
Operating Temperature - Junction: -40°C ~ 150°C
Mounting Type: Surface Mount
Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63

Parts meeting all of these criteria are classified as parametric equivalents and are suitable for direct substitution in applications designed for the 6CWQ03FN.

Parameter Comparison

Parameter	6CWQ03FN	VS-6CWQ03FN-M3
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V	30 V
Current - Average Rectified (Io) (per Diode)	3.5 A	3.5 A
Voltage - Forward (Vf) (Max) @ If	450 mV @ 3 A	450 mV @ 3 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Operating Temperature - Junction	-40°C ~ 150°C	-40°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63
Supplier Device Package	TO-252AA (DPAK)	TO-252AA (DPAK)
Current - Reverse Leakage @ Vr	2 mA @ 30 V	2 µA @ 30 V
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The VS-6CWQ03FN-M3 is a parametric equivalent to the 6CWQ03FN and is suitable for direct substitution in applications requiring a Schottky diode array with the specified electrical and mechanical characteristics.

The primary distinction between the two parts is product status and regulatory compliance. The 6CWQ03FN is obsolete, whereas the VS-6CWQ03FN-M3 is active and carries ROHS3 compliance certification. The VS-6CWQ03FN-M3 also exhibits lower reverse leakage current (2 µA @ 30 V compared to 2 mA @ 30 V), which represents improved device performance characteristics.

For new designs and ongoing production requiring compliance with current regulatory standards, the VS-6CWQ03FN-M3 is the appropriate selection. Both parts are manufactured by the same supplier and share identical electrical ratings, forward voltage characteristics, and thermal operating range.

Frequently Asked Questions (FAQ)

Q: Can the VS-6CWQ03FN-M3 be used as a direct replacement for the 6CWQ03FN?

A: Yes. The VS-6CWQ03FN-M3 meets all electrical and mechanical parameter requirements for direct substitution. Both parts feature identical diode configuration, voltage ratings, current ratings, forward voltage characteristics, and package specifications.

Q: What is the difference in reverse leakage current between these parts?

A: The 6CWQ03FN exhibits 2 mA reverse leakage current at 30 V, while the VS-6CWQ03FN-M3 exhibits 2 µA reverse leakage current at 30 V. This represents a 1000-fold reduction in leakage current in the substitute part, indicating improved device performance.

Q: Are there any package or pinout differences?

A: No. Both parts use the TO-252-3 DPAK package with two leads and a tab (SC-63). The supplier device package designation is TO-252AA (DPAK) for both parts. Pinout and mechanical dimensions are identical.

Q: What is the significance of the RoHS compliance difference?

A: The 6CWQ03FN is RoHS non-compliant, while the VS-6CWQ03FN-M3 is ROHS3 compliant. For applications subject to RoHS regulations or customer requirements mandating RoHS compliance, the VS-6CWQ03FN-M3 is the required selection.

Q: Are both parts available from the same manufacturer?

A: Yes. Both the 6CWQ03FN and VS-6CWQ03FN-M3 are manufactured by Vishay General Semiconductor - Diodes Division.

Q: What is the product status of each part?

A: The 6CWQ03FN is classified as obsolete. The VS-6CWQ03FN-M3 is classified as active and currently in production.

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