CDBJSC8650-G Silicon Carbide Schottky Diode 650V 8A Equivalent & Substitute Parts

Part Overview

The CDBJSC8650-G is a silicon carbide Schottky diode manufactured by Comchip Technology, rated for 650V DC reverse voltage and 8A average rectified current in a through-hole TO-220-2 package. This component is classified as an active product with ROHS3 compliance and unlimited moisture sensitivity rating. Alternative equivalent parts are necessary to address supply chain flexibility, inventory availability, and design redundancy requirements in high-reliability applications.

Substiute Parts

CDBJSC8650-G

Comchip TechnologyIn Stock: 706CDBJSC8650-G Datasheet

Current PartRFQ

FFSP0665B

onsemiIn Stock: 2087FFSP0665B Datasheet

Parametric EquivalentRFQ

PCDP0865G1_T0_00001

Panjit International Inc.In Stock: 3132PCDP0865G1_T0_00001 Datasheet

Parametric EquivalentRFQ

UJ3D06508TS

QorvoIn Stock: 29148UJ3D06508TS Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDBJSC8650-G is determined by strict equivalence across the following parameters:

Primary Equivalence Criteria:

• Voltage - DC Reverse (Vr) Maximum: 650V
• Current - Average Rectified (Io): 8A
• Technology: SiC (Silicon Carbide) Schottky
• Mounting Type: Through Hole
• Operating Temperature Range: -55°C to 175°C
• RoHS Compliance: ROHS3 Compliant

Secondary Compatibility Parameters:

• Voltage - Forward (Vf) Maximum: 1.7V or lower
• Reverse Recovery Time (trr): 0 ns (no recovery time specification)
• Package / Case: TO-220-2 or TO-220AC (mechanically compatible)

All substitute parts listed meet or exceed the primary equivalence criteria. Variations in reverse leakage current and junction capacitance do not affect functional substitution within the specified electrical operating range.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts—FFSP0665B (onsemi), PCDP0865G1_T0_00001 (Panjit International Inc.), and UJ3D06508TS (Qorvo)—are functionally equivalent to the CDBJSC8650-G and meet the core electrical and mechanical requirements for direct substitution.

Selection Basis:

FFSP0665B (onsemi): This part demonstrates lower reverse leakage current (40 µA versus 100 µA at 650V) and reduced junction capacitance (259 pF at 1V, 100 kHz). It is suitable for applications where leakage minimization is beneficial. Forward voltage specification is provided at 6A rather than 8A. ROHS3 compliance and REACH unaffected status are confirmed.

PCDP0865G1_T0_00001 (Panjit International Inc.): This part matches the CDBJSC8650-G forward voltage specification exactly (1.7V @ 8A) and provides moderate reverse leakage (60 µA at 650V). The supplier device package is designated TO-220AC, which is mechanically compatible with TO-220-2 footprints. ROHS3 compliance and REACH unaffected status are confirmed. Moisture sensitivity level is not applicable.

UJ3D06508TS (Qorvo): This part is designated as Gen-III series and offers the lowest reverse leakage current (50 µA at 650V) with reduced junction capacitance (250 pF at 1V, 1 MHz). It matches the CDBJSC8650-G forward voltage specification (1.7V @ 8A). ROHS3 compliance and REACH unaffected status are confirmed. Moisture sensitivity level is not applicable.

All substitute parts carry active product status and are available in production quantities.

Frequently Asked Questions (FAQ)

Q: Can FFSP0665B be used as a direct replacement for CDBJSC8650-G?

A: Yes. FFSP0665B meets all primary equivalence criteria: 650V reverse voltage rating, 8A average rectified current, SiC Schottky technology, through-hole mounting, TO-220-2 package, and -55°C to 175°C operating temperature range. Forward voltage is specified at 6A rather than 8A, but the 1.7V maximum rating is identical. Reverse leakage is lower (40 µA), which does not prevent substitution.

Q: What is the difference between TO-220-2 and TO-220AC packages?

A: Both designations refer to mechanically compatible through-hole packages with two leads. TO-220AC is an alternative designation used by some manufacturers. The PCDP0865G1_T0_00001 uses TO-220AC designation but is mechanically and electrically compatible with TO-220-2 footprints.

Q: Why does CDBJSC8650-G have higher reverse leakage current (100 µA) compared to the substitutes?

A: Reverse leakage current variation within the specified range does not affect functional substitution. All parts meet the 650V reverse voltage rating. Lower leakage in substitute parts (40–50 µA) represents improved performance characteristics and does not create incompatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. CDBJSC8650-G, FFSP0665B, PCDP0865G1_T0_00001, and UJ3D06508TS are all ROHS3 compliant. FFSP0665B, PCDP0865G1_T0_00001, and UJ3D06508TS also carry REACH unaffected status.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes. All substitute parts use identical through-hole TO-220-2 or mechanically compatible TO-220AC packages. No PCB layout modifications are required for substitution.

Q: What is the significance of zero reverse recovery time (trr = 0 ns)?

A: Zero reverse recovery time indicates that these are Schottky diodes with inherent fast switching characteristics. This specification is identical across all parts and confirms suitability for high-frequency rectification applications.

Q: Which substitute part offers the best performance for low-leakage applications?

A: UJ3D06508TS (Qorvo Gen-III) provides the lowest reverse leakage current (50 µA at 650V) and lowest junction capacitance (250 pF at 1V, 1 MHz), making it optimal for applications requiring minimal leakage and fast switching response.