WNSC12650T6J Silicon Carbide Schottky Diode Equivalent & Substitute Parts

Part Overview

The WNSC12650T6J is a silicon carbide Schottky diode rated for 650 V DC reverse voltage with 12 A average rectified current in a 5-DFN (8x8) surface mount package. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The part is RoHS compliant with MSL 1 rating, indicating unlimited moisture sensitivity tolerance.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	650	V
Current - Average Rectified (Io)	12	A
Voltage - Forward (Vf) (Max) @ If	1.8	V @ 12 A
Reverse Recovery Time (trr)	0	ns
Current - Reverse Leakage @ Vr	60	µA @ 650 V
Capacitance @ Vr, F	328	pF @ 1V, 1MHz
Operating Temperature - Junction	175	°C
Package / Case	5-DFN (8x8)	Surface Mount
Technology	SiC (Silicon Carbide) Schottky
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution of the WNSC12650T6J is determined by electrical and mechanical parameter equivalence within the silicon carbide Schottky diode category. The critical parameters for substitution are:

Voltage rating: 650 V DC reverse voltage (Vr)
Current rating: 12 A average rectified current (Io)
Package type: 5-DFN (8x8) surface mount configuration
Technology: SiC Schottky diode architecture
Reverse recovery time: 0 ns (ultrafast switching characteristic)
Reverse leakage current: 60 µA @ 650 V

The WNSC5D12650T6J qualifies as a direct substitute based on matching all critical electrical ratings and package specifications. This part is manufactured by the same supplier (WeEn Semiconductors) and maintains identical voltage, current, and package parameters while offering active product status.

Parameter Comparison

Parameter	WNSC12650T6J (Main Part)	WNSC5D12650T6J (Substitute)	Match Status
Voltage - DC Reverse (Vr) (Max)	650 V	650 V	Equivalent
Current - Average Rectified (Io)	12 A	12 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	1.8 V @ 12 A	1.7 V @ 12 A	Substitute Superior
Reverse Recovery Time (trr)	0 ns	0 ns	Equivalent
Current - Reverse Leakage @ Vr	60 µA @ 650 V	60 µA @ 650 V	Equivalent
Capacitance @ Vr, F	328 pF @ 1V, 1MHz	420 pF @ 1V, 1MHz	Substitute Higher
Operating Temperature - Junction	175°C	-55°C ~ 175°C	Substitute Extended Range
Package / Case	5-DFN (8x8)	5-DFN (8x8)	Equivalent
Technology	SiC Schottky	SiC Schottky	Equivalent
Product Status	Obsolete	Active	Substitute Active
RoHS Status	RoHS Compliant	Not Specified	Main Part Compliant

Engineering Selection Recommendations

The WNSC5D12650T6J is the manufacturer-recommended substitute for the obsolete WNSC12650T6J. Both parts are manufactured by WeEn Semiconductors and maintain identical electrical specifications for voltage (650 V), current (12 A), and package configuration (5-DFN 8x8).

The substitute part offers the following advantages:

Active product status ensures continued availability and supply chain reliability
Forward voltage specification of 1.7 V @ 12 A is lower than the main part specification of 1.8 V @ 12 A, indicating improved efficiency characteristics
Extended operating temperature range of -55°C to 175°C provides broader thermal operating envelope compared to the main part's 175°C maximum
Identical reverse recovery time (0 ns) and reverse leakage current (60 µA @ 650 V) maintain switching performance characteristics

The WNSC12650T6J is RoHS compliant. Selection of the WNSC5D12650T6J for new designs and production transitions is supported by manufacturer recommendation and active product status.

Frequently Asked Questions (FAQ)

Q: Can the WNSC5D12650T6J be used as a direct replacement for the WNSC12650T6J in existing circuit designs?

A: Yes. Both parts share identical voltage ratings (650 V), current ratings (12 A), package type (5-DFN 8x8), and core SiC Schottky technology. The substitute part meets all electrical parameter requirements for direct substitution.

Q: What is the significance of the lower forward voltage (1.7 V vs. 1.8 V) in the substitute part?

A: The lower forward voltage specification of the WNSC5D12650T6J indicates reduced voltage drop across the diode during forward conduction at 12 A. This results in lower power dissipation and improved circuit efficiency compared to the main part.

Q: Does the higher capacitance value (420 pF vs. 328 pF) of the substitute part affect circuit performance?

A: The capacitance difference is specified at identical conditions (1V, 1MHz). Circuit impact depends on application-specific requirements. For high-frequency switching applications, the capacitance value should be evaluated against circuit design parameters.

Q: Why is the operating temperature range extended in the substitute part?

A: The WNSC5D12650T6J specifies an operating temperature range of -55°C to 175°C, compared to the main part's 175°C maximum. This extended lower temperature limit provides broader thermal operating capability for applications requiring low-temperature operation.

Q: Are both parts available in the same packaging format?

A: Yes. Both the WNSC12650T6J and WNSC5D12650T6J are supplied in 5-DFN (8x8) surface mount packages with 4-VSFN exposed pad configuration, ensuring mechanical and thermal compatibility.

Q: What is the product status difference between these parts?

A: The WNSC12650T6J is classified as obsolete, while the WNSC5D12650T6J maintains active product status. Active status ensures ongoing manufacturing, quality assurance, and supply chain availability for production requirements.

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