LFUSCD10065A Silicon Carbide Schottky Diode 650V 10A TO-220AC Equivalent & Substitute Parts

Part Overview

The LFUSCD10065A is a silicon carbide Schottky diode manufactured by Littelfuse Inc., rated for 650V DC reverse voltage and 10A average rectified current in a through-hole TO-220AC package. This component is classified as Active product status and is ROHS3 compliant. The device features zero reverse recovery time characteristic of SiC Schottky technology, making it suitable for high-frequency switching applications requiring minimal switching losses.

Equivalent and substitute parts are identified based on matching or exceeding the electrical specifications while maintaining compatible mechanical packaging and thermal characteristics. Substitution is necessary when the primary part becomes unavailable, when higher current ratings are required within the same voltage class, or when alternative manufacturer sourcing is needed for supply chain continuity.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	650	V
Current - Average Rectified (Io)	10	A
Voltage - Forward (Vf) (Max) @ If	1.7 @ 10	V @ A
Reverse Recovery Time (trr)	0	ns
Current - Reverse Leakage @ Vr	250	µA @ 650V
Technology	SiC (Silicon Carbide) Schottky	-
Mounting Type	Through Hole	-
Package / Case	TO-220-2	-
Operating Temperature - Junction (Max)	175	°C
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the LFUSCD10065A are selected based on the following critical parameters:

Mandatory Matching Criteria:

Voltage - DC Reverse (Vr) (Max): 650V (exact match required)
Technology: SiC (Silicon Carbide) Schottky (zero reverse recovery time characteristic)
Mounting Type: Through Hole
Package / Case: TO-220-2 or compatible TO-220 variant
Reverse Recovery Time (trr): 0 ns (no recovery time > 500mA)

Allowable Variation Criteria:

Current - Average Rectified (Io): Equal to or greater than 10A
Voltage - Forward (Vf) (Max) @ If: Within acceptable range for SiC Schottky technology (1.35V to 1.8V typical)
Current - Reverse Leakage @ Vr: Lower values indicate superior performance
Operating Temperature - Junction: -55°C to 175°C range acceptable

Substitute parts are grouped by current rating capability. Parts with current ratings of 10A or higher at 650V with zero reverse recovery time are considered direct substitutes. Parts from Wolfspeed (Z-Rec® series), onsemi (FFSP series), and Infineon Technologies (CoolSiC™+ series) meet these criteria.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V @ A]	Ir @ Vr [µA]	Package	Temp Range [°C]	RoHS Status
LFUSCD10065A	Littelfuse Inc.	650	10	1.7 @ 10	250 @ 650V	TO-220-2	-55 to 175	ROHS3
C3D04065A	Wolfspeed, Inc.	650	13.5	1.8 @ 4	60 @ 650V	TO-220-2	-55 to 175	ROHS3
C3D06065A	Wolfspeed, Inc.	650	19	1.8 @ 6	60 @ 650V	TO-220-2	-55 to 175	ROHS3
C3D08065A	Wolfspeed, Inc.	650	24	1.8 @ 8	60 @ 650V	TO-220-2	-55 to 175	ROHS3
C3D10065A	Wolfspeed, Inc.	650	30	1.8 @ 10	60 @ 650V	TO-220-2	-55 to 175	ROHS3
C3D12065A	Wolfspeed, Inc.	650	35	1.8 @ 12	74 @ 650V	TO-220-2	-55 to 175	ROHS3
C3D16065A	Wolfspeed, Inc.	650	39	1.8 @ 16	95 @ 650V	TO-220-2	-55 to 175	ROHS3
FFSP3065A	onsemi	650	30	1.75 @ 30	200 @ 650V	TO-220-2	-55 to 175	ROHS3
IDH04G65C5XKSA2	Infineon Technologies	650	4	1.7 @ 4	70 @ 650V	TO-220-2	-55 to 175	ROHS3
IDH04G65C6XKSA1	Infineon Technologies	650	12	1.35 @ 4	14 @ 420V	TO-220-2	-55 to 175	ROHS3
IDH06G65C6XKSA1	Infineon Technologies	650	16	1.35 @ 6	20 @ 420V	TO-220-2	-55 to 175	ROHS3

Engineering Selection Recommendations

Direct Substitutes (Equal or Higher Current Rating):

The following parts are suitable direct substitutes for the LFUSCD10065A based on matching or exceeding the 10A current specification at 650V with identical zero reverse recovery time:

C3D04065A (Wolfspeed, 13.5A): Meets minimum current requirement with lower reverse leakage current (60µA vs 250µA). ROHS3 compliant. Active product status.
C3D06065A (Wolfspeed, 19A): Exceeds current requirement with superior reverse leakage performance. ROHS3 compliant. Active product status.
C3D10065A (Wolfspeed, 30A): Highest current capacity in Wolfspeed Z-Rec® series. Matches forward voltage at 10A operation. ROHS3 compliant. Active product status.
IDH04G65C6XKSA1 (Infineon, 12A): Meets current requirement with superior forward voltage characteristics (1.35V @ 4A). ROHS3 compliant. Active product status.
IDH06G65C6XKSA1 (Infineon, 16A): Exceeds current requirement with optimized forward voltage profile. ROHS3 compliant. Active product status.

Conditional Substitutes (Lower Current Rating):

IDH04G65C5XKSA2 (Infineon, 4A): Current rating below LFUSCD10065A specification. Suitable only for applications requiring less than 4A average rectified current.

Alternative Sourcing (Different Characteristics):

FFSP3065A (onsemi, 30A): Matches 650V rating and 30A current capacity. Forward voltage 1.75V @ 30A. Higher reverse leakage current (200µA) compared to Wolfspeed alternatives. ROHS3 compliant. Active product status.

All recommended substitutes maintain ROHS3 compliance and active product status. Selection should prioritize parts with lower reverse leakage current and forward voltage characteristics matching application requirements.

Frequently Asked Questions (FAQ)

Q: Can C3D04065A replace LFUSCD10065A in all applications?

A: C3D04065A meets the minimum 10A current requirement at 650V with zero reverse recovery time. However, it features lower reverse leakage current (60µA vs 250µA), which may affect circuit behavior in applications sensitive to leakage characteristics. Electrical compatibility is confirmed for voltage and current ratings.

Q: What is the difference between Wolfspeed Z-Rec® and Infineon CoolSiC™+ series diodes?

A: Both series use SiC Schottky technology with zero reverse recovery time at 650V. Wolfspeed Z-Rec® parts show reverse leakage currents of 60-95µA. Infineon CoolSiC™+ parts demonstrate lower reverse leakage (14-70µA) and lower forward voltage (1.35V @ rated current). Selection depends on application sensitivity to leakage and forward voltage characteristics.

Q: Is the TO-220-2 package identical across all substitute parts?

A: All substitute parts use TO-220-2 or compatible TO-220 through-hole packages. Mechanical compatibility is confirmed. Thermal performance may vary based on die size and internal construction. Verify thermal interface requirements for specific application thermal management.

Q: Can FFSP3065A be used instead of C3D10065A?

A: Both parts are rated 650V, 30A with zero reverse recovery time in TO-220-2 packages. FFSP3065A has higher reverse leakage current (200µA vs 60µA) and different forward voltage characteristics (1.75V @ 30A vs 1.8V @ 10A). Electrical substitution is possible; however, circuit performance differences should be evaluated.

Q: Why do some parts show lower reverse leakage at 420V instead of 650V?

A: Reverse leakage current specifications are provided at the measurement condition stated by the manufacturer. Infineon parts specify leakage at 420V, while Littelfuse and Wolfspeed specify at 650V. Direct numerical comparison requires normalization to identical voltage conditions per device datasheets.

Q: Are all substitute parts suitable for high-frequency switching applications?

A: Yes. All substitute parts feature zero reverse recovery time (trr = 0 ns) characteristic of SiC Schottky technology, confirming suitability for high-frequency switching with minimal switching losses. Forward voltage and leakage current variations may affect efficiency and thermal performance.

Q: What is the impact of higher current rating substitutes on circuit design?

A: Substituting with higher current-rated parts (e.g., C3D10065A at 30A for LFUSCD10065A at 10A) does not degrade circuit performance when operated within the original 10A specification. Higher current rating provides design margin and potential for future application scaling. Thermal management and PCB layout remain unchanged for equivalent power dissipation.

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