LSIC2SD065E40CCA Silicon Carbide Schottky Diode Equivalent & Substitute Parts

Part Overview

The LSIC2SD065E40CCA is a 650 V, 45 A silicon carbide Schottky diode manufactured by Littelfuse Inc. in TO-247AD package configuration. This device is classified as an active product with automotive-grade qualification (AEC-Q101) and ROHS3 compliance. The part operates across a junction temperature range of -55°C to 175°C and features zero reverse recovery time characteristic of SiC Schottky technology. Substitute parts are identified to address inventory availability, supply chain continuity, or specific application requirements while maintaining electrical and mechanical compatibility within defined parameter tolerances.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) Maximum	650	V
Current - Average Rectified (Io)	45	A
Voltage - Forward (Vf) Maximum @ If	1.8 V @ 20 A	V
Reverse Recovery Time (trr)	0	ns
Current - Reverse Leakage @ Vr	50	µA @ 650 V
Technology	SiC (Silicon Carbide) Schottky	—
Package / Case	TO-247-3	—
Mounting Type	Through Hole	—
Operating Temperature - Junction	-55 to 175	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution logic for the LSIC2SD065E40CCA is based on the following critical parameters that must align across candidate parts:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) Maximum: 650 V
Package / Case: TO-247-3 (mechanical compatibility)
Technology: SiC (Silicon Carbide) Schottky
Mounting Type: Through Hole
Current - Average Rectified (Io): Minimum 45 A per diode or equivalent configuration

Acceptable Variation Parameters:

Voltage - Forward (Vf) Maximum: Within ±0.35 V of 1.8 V @ 20 A
Current - Reverse Leakage @ Vr: Up to 300 µA @ 650 V
Operating Temperature - Junction: Minimum -40°C to maximum 175°C
Reverse Recovery Time (trr): 0 ns or Fast Recovery ≤ 500 ns

Configuration Consideration: Substitute parts may be configured as diode arrays (1 Pair Common Cathode) with per-diode current ratings that collectively meet or exceed the 45 A requirement of the main part. Single diodes with 45 A or higher ratings are direct substitutes. Array configurations require application-level verification of circuit topology compatibility.

Parameter Comparison

Parameter	LSIC2SD065E40CCA (Main)	C3D16065D	C3D20065D	C3D30065D	S3D40065D	STPSC20H065CWY	STPSC40065CW	STPSC40065CWY
Manufacturer	Littelfuse Inc.	Wolfspeed, Inc.	Wolfspeed, Inc.	Wolfspeed, Inc.	SMC Diode Solutions	STMicroelectronics	STMicroelectronics	STMicroelectronics
Voltage - DC Reverse (Vr) Max	650 V	650 V	650 V	650 V	650 V	650 V	650 V	650 V
Current - Average Rectified (Io)	45 A	8 A (per diode)	10 A (per diode)	39 A (per diode)	48 A (per diode)	10 A (per diode)	20 A (per diode)	20 A
Voltage - Forward (Vf) Max @ If	1.8 V @ 20 A	1.8 V @ 8 A	1.8 V @ 10 A	1.8 V @ 16 A	1.7 V @ 20 A	1.75 V @ 10 A	1.7 V @ 20 A	1.45 V @ 20 A
Reverse Recovery Time (trr)	0 ns	0 ns	0 ns	0 ns	≤ 500 ns	≤ 500 ns	≤ 500 ns	0 ns
Current - Reverse Leakage @ Vr	50 µA @ 650 V	60 µA @ 650 V	60 µA @ 650 V	95 µA @ 650 V	50 µA @ 650 V	100 µA @ 650 V	300 µA @ 600 V	300 µA @ 650 V
Technology	SiC Schottky	SiC Schottky	SiC Schottky	SiC Schottky	SiC Schottky	SiC Schottky	SiC Schottky	SiC Schottky
Package / Case	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3
Diode Configuration	Single Diode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	Single Diode
Operating Temperature - Junction	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C	-40 to 175°C	-40 to 175°C	-40 to 175°C
Grade	Automotive	—	—	—	—	Automotive	—	Automotive
Qualification	AEC-Q101	—	—	—	—	AEC-Q101	—	AEC-Q101
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Single-Diode Substitutes (Highest Compatibility):

S3D40065D (SMC Diode Solutions) is the closest functional equivalent. This part delivers 48 A per diode, exceeding the 45 A requirement of the main part. Both devices share identical 650 V reverse voltage rating, TO-247-3 package, and SiC Schottky technology. Forward voltage is 1.7 V @ 20 A, which is 0.1 V lower than the main part, indicating superior efficiency characteristics. Reverse leakage current matches at 50 µA @ 650 V. Operating temperature range spans -55°C to 175°C, matching the main part exactly. This part is ROHS3 compliant and active in production status.

STPSC40065CWY (STMicroelectronics) is a single-diode configuration rated at 20 A, which does not meet the 45 A current requirement when used as a direct replacement. However, this part carries automotive-grade qualification (AEC-Q101) and is ROHS3 compliant. Forward voltage is 1.45 V @ 20 A, providing lower conduction losses. Operating temperature minimum is -40°C, which is 15°C higher than the main part's -55°C specification. This part is suitable only in applications where the lower temperature minimum is acceptable and where circuit topology permits parallel configuration or where actual current demand is below 20 A.

Array Configuration Substitutes (Application-Dependent):

C3D30065D (Wolfspeed, Inc.) is a diode array with 1 Pair Common Cathode configuration, rated at 39 A per diode. This part approaches the 45 A requirement and may be used in applications where the circuit topology supports array configuration. Forward voltage is 1.8 V @ 16 A, matching the main part specification. Reverse leakage is 95 µA @ 650 V, within acceptable variation. Operating temperature range is -55°C to 175°C. ROHS3 compliant and active status. Array configuration requires verification of circuit-level compatibility.

C3D20065D (Wolfspeed, Inc.) is rated at 10 A per diode in array configuration. This part does not meet the 45 A requirement and is suitable only for applications with significantly reduced current demands or where multiple array pairs can be paralleled. Forward voltage is 1.8 V @ 10 A. ROHS3 compliant and active status.

STPSC20H065CWY (STMicroelectronics) is rated at 10 A per diode in array configuration. This part carries automotive-grade qualification (AEC-Q101) and ROHS3 compliance. Forward voltage is 1.75 V @ 10 A. Operating temperature minimum is -40°C. This part does not meet the 45 A requirement and is suitable only for reduced-current applications or parallel configurations.

STPSC40065CW (STMicroelectronics) is rated at 20 A per diode in array configuration. Forward voltage is 1.7 V @ 20 A. Reverse leakage is 300 µA @ 600 V, which exceeds the main part specification. Operating temperature minimum is -40°C. This part does not meet the 45 A requirement and is suitable only for reduced-current applications or parallel configurations.

C3D16065D (Wolfspeed, Inc.) is rated at 8 A per diode in array configuration. This part does not meet the 45 A requirement and is suitable only for significantly reduced-current applications. Forward voltage is 1.8 V @ 8 A. ROHS3 compliant and active status.

Compliance and Certification Summary:

Parts with automotive-grade qualification (AEC-Q101) and matching operating temperature range (-55°C to 175°C) are: LSIC2SD065E40CCA (main part), STPSC40065CWY, and STPSC20H065CWY. All substitute parts are ROHS3 compliant. For applications requiring automotive qualification and full temperature range, S3D40065D is the recommended single-diode substitute despite lacking explicit AEC-Q101 designation, as it meets all electrical and thermal parameters. STPSC40065CWY is the alternative if automotive qualification is mandatory, with the caveat that its 20 A rating requires circuit topology verification.

Frequently Asked Questions (FAQ)

Q1: Can C3D30065D replace LSIC2SD065E40CCA directly in a single-diode socket?

A: C3D30065D is a diode array with 1 Pair Common Cathode configuration, not a single diode. Direct socket replacement is not possible without circuit modification. The array configuration has three leads (two cathodes and one common anode) versus the three leads of a single diode (anode, cathode, and case). Physical footprint compatibility exists (both TO-247-3), but electrical connectivity differs. Use only if circuit topology supports array configuration.

Q2: What is the significance of the 45 A current rating in the main part?

A: The 45 A rating represents the maximum average rectified current (Io) the diode can conduct continuously at rated conditions. Substitute parts must either be single diodes rated at 45 A or higher, or array configurations where per-diode ratings can be paralleled to achieve equivalent current capacity. Parts rated below 45 A (such as C3D20065D at 10 A per diode) cannot directly replace the main part in applications requiring full 45 A capacity.

Q3: Why do some substitute parts have different operating temperature minimums (-40°C vs. -55°C)?

A: Operating temperature range is determined by device design and thermal characteristics. Parts with -40°C minimum (STPSC20H065CWY, STPSC40065CW, STPSC40065CWY) are suitable for applications where ambient or junction temperatures do not fall below -40°C. Applications requiring operation at -55°C must use parts with -55°C minimum specification (LSIC2SD065E40CCA, C3D16065D, C3D20065D, C3D30065D, S3D40065D).

Q4: What does "1 Pair Common Cathode" configuration mean?

A: This describes a diode array containing two diodes sharing a common cathode terminal. The package has three leads: two anodes (one per diode) and one common cathode. This configuration is used in bridge rectifier circuits or dual-diode applications. It is not equivalent to a single-diode configuration and requires circuit topology compatibility.

Q5: Is S3D40065D the best substitute for LSIC2SD065E40CCA?

A: S3D40065D is the closest functional equivalent based on provided parameters. It is a single diode (not an array) rated at 48 A, exceeding the 45 A requirement. Both parts share 650 V reverse voltage, TO-247-3 package, SiC Schottky technology, and identical operating temperature range (-55°C to 175°C). Forward voltage is 1.7 V @ 20 A versus 1.8 V, indicating slightly better efficiency. Reverse leakage matches at 50 µA @ 650 V. Both are ROHS3 compliant and active products. The primary difference is that S3D40065D lacks explicit automotive-grade (AEC-Q101) designation, whereas the main part carries this qualification.

Q6: Can STPSC40065CWY be used as a substitute despite its 20 A rating?

A: STPSC40065CWY is a single diode rated at 20 A, which is below the 45 A requirement of the main part. Direct substitution is not possible in applications requiring full 45 A capacity. However, this part carries automotive-grade qualification (AEC-Q101) and ROHS3 compliance. It may be used in applications where actual current demand is 20 A or below, or where circuit topology permits parallel configuration of multiple devices. Operating temperature minimum is -40°C, which is 15°C higher than the main part's -55°C specification.

Q7: What is the importance of reverse recovery time (trr) in these diodes?

A: Reverse recovery time is the interval required for a diode to transition from forward conduction to reverse blocking when the applied voltage reverses. The main part LSIC2SD065E40CCA has 0 ns trr, characteristic of SiC Schottky technology. Substitute parts with 0 ns trr (C3D16065D, C3D20065D, C3D30065D, STPSC40065CWY) are directly compatible. Parts with Fast Recovery ≤ 500 ns (S3D40065D, STPSC20H065CWY, STPSC40065CW) have slightly longer recovery times but remain within acceptable SiC Schottky performance envelope. Longer recovery times may affect switching frequency performance in high-frequency applications.

Q8: Are all substitute parts ROHS3 compliant?

A: Yes. All parts listed—LSIC2SD065E40CCA (main), C3D16065D, C3D20065D, C3D30065D, S3D40065D, STPSC20H065CWY, STPSC40065CW, and STPSC40065CWY—are ROHS3 compliant. This ensures compliance with Restriction of Hazardous Substances regulations for lead-free manufacturing.

Q9: Which substitute parts carry automotive-grade qualification?

A: Only STPSC20H065CWY and STPSC40065CWY carry explicit automotive-grade qualification (AEC-Q101) among the substitute parts. The main part LSIC2SD065E40CCA also carries AEC-Q101. If automotive qualification is a mandatory requirement, these two parts are the only qualified substitutes. However, STPSC20H065CWY is rated at 10 A per diode (array configuration) and STPSC40065CWY is rated at 20 A, both below the 45 A requirement.

Q10: What is the difference between forward voltage specifications at different current levels?

A: Forward voltage (Vf) varies with forward current (If). The main part specifies 1.8 V @ 20 A. Substitute parts may specify Vf at different current levels (e.g., 1.8 V @ 8 A, 1.8 V @ 10 A, 1.7 V @ 20 A). These specifications reflect the diode's I-V characteristic curve. When comparing parts, Vf specifications at the same If level provide the most accurate comparison. Lower Vf at equivalent If indicates lower conduction losses and improved efficiency.

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