LSIC2SD120A08 Silicon Carbide Schottky Diode Equivalent & Substitute Parts

Part Overview

The LSIC2SD120A08 is a 1200 V, 24.5 A silicon carbide Schottky diode manufactured by Littelfuse Inc., packaged in TO-220AC configuration for through-hole mounting applications. This component operates with zero reverse recovery time, making it suitable for high-frequency switching and power conversion circuits requiring fast switching characteristics.

The LSIC2SD120A08 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements. Suitable alternatives maintain the same voltage rating, current capacity, and thermal operating range while offering active product status from multiple manufacturers.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) Maximum	1200	V
Current - Average Rectified (Io)	24.5	A
Voltage - Forward (Vf) Maximum @ If	1.8 V @ 8 A	V @ A
Reverse Recovery Time (trr)	0	ns
Current - Reverse Leakage @ Vr	100	µA @ 1200 V
Technology	SiC (Silicon Carbide) Schottky	—
Mounting Type	Through Hole	—
Package / Case	TO-220-2	—
Operating Temperature - Junction	-55 to 175	°C

Substitute Part Grouping Explanation

Substitution of the LSIC2SD120A08 is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) Maximum: 1200 V
Technology: SiC (Silicon Carbide) Schottky
Mounting Type: Through Hole
Package / Case: TO-220-2 or compatible TO-220 variants
Operating Temperature Range: -55°C to 175°C minimum

Current Capacity Consideration: The LSIC2SD120A08 specifies 24.5 A average rectified current. Substitute parts are grouped into two categories:

Direct Parametric Equivalents (24.5 A rating): Parts with identical current specifications and electrical characteristics, differing only in package style or manufacturer.
Functional Alternatives (10 A to 54.5 A range): Parts meeting all voltage, technology, and thermal requirements but with different current ratings. These are suitable when circuit design permits current derating or when higher current capacity is required.

All substitute parts listed maintain zero or near-zero reverse recovery time, ensuring compatibility with fast-switching applications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) @ If	trr (ns)	Ir @ Vr (µA)	Package	Status
LSIC2SD120A08	Littelfuse Inc.	1200	24.5	1.8 @ 8 A	0	100 @ 1200 V	TO-220AC	Obsolete
LSIC2SD120A10A	Littelfuse Inc.	1200	28	1.8 @ 10 A	0	100 @ 1200 V	TO-220-2L	Active
LSIC2SD120E15CC	Littelfuse Inc.	1200	24.5	1.8 @ 8 A	0	100 @ 1200 V	TO-247AD	Obsolete
C4D02120A	Wolfspeed, Inc.	1200	10	1.8 @ 2 A	0	50 @ 1200 V	TO-220-2	Active
C4D05120A	Wolfspeed, Inc.	1200	19	1.8 @ 5 A	0	150 @ 1200 V	TO-220-2	Active
C4D08120A	Wolfspeed, Inc.	1200	24.5	1.8 @ 7.5 A	0	250 @ 1200 V	TO-220-2	Active
C4D10120A	Wolfspeed, Inc.	1200	33	1.8 @ 10 A	0	250 @ 1200 V	TO-220-2	Active
C4D15120A	Wolfspeed, Inc.	1200	43.5	1.8 @ 15 A	0	200 @ 1200 V	TO-220-2	Active
C4D20120A	Wolfspeed, Inc.	1200	54.5	1.8 @ 20 A	0	200 @ 1200 V	TO-220-2	Active
FFSP08120A	onsemi	1200	8	1.75 @ 8 A	≤500	200 @ 1200 V	TO-220-2L	Active
FFSP10120A	onsemi	1200	10	1.75 @ 10 A	≤500	200 @ 1200 V	TO-220-2L	Active

Engineering Selection Recommendations

Primary Recommendation - Direct Parametric Equivalent:

C4D08120A (Wolfspeed, Inc.) is the primary substitute for LSIC2SD120A08. This part maintains identical voltage rating (1200 V), current capacity (24.5 A), forward voltage characteristics (1.8 V @ 7.5 A), and zero reverse recovery time. The C4D08120A is active product status with RoHS3 compliance and unlimited moisture sensitivity level. Package configuration is TO-220-2, compatible with standard through-hole PCB layouts. Wolfspeed Z-Rec® series technology ensures reliable performance in high-frequency switching applications.

Secondary Recommendation - Littelfuse Alternative:

LSIC2SD120A10A (Littelfuse Inc.) provides an active-status alternative within the same manufacturer family. This part increases current capacity to 28 A while maintaining 1200 V voltage rating and identical forward voltage specification (1.8 V @ 10 A). Package is TO-220-2L, a standard through-hole variant. This option is suitable when higher current margin is required or when maintaining single-manufacturer sourcing is preferred.

Higher Current Alternatives:

For applications requiring increased current capacity beyond 24.5 A, C4D10120A (33 A), C4D15120A (43.5 A), and C4D20120A (54.5 A) from Wolfspeed provide active-status options with identical voltage and thermal specifications. These parts are suitable for circuit designs that can accommodate higher current ratings without modification.

Lower Current Alternatives:

C4D02120A (10 A) and C4D05120A (19 A) are available for applications where current derating is acceptable. These parts maintain full voltage and thermal compatibility.

Compliance Considerations:

All recommended substitutes carry RoHS3 compliance and REACH unaffected status, meeting modern environmental and regulatory requirements. The LSIC2SD120E15CC alternative offers identical electrical specifications but uses TO-247AD package; this option is suitable only if PCB layout accommodates the larger package footprint.

Frequently Asked Questions (FAQ)

Q: Can LSIC2SD120A08 be directly replaced with C4D08120A?

A: Yes. Both parts maintain 1200 V reverse voltage rating, 24.5 A average rectified current, 1.8 V forward voltage specification, and zero reverse recovery time. Package configuration is TO-220-2 in both cases, compatible with standard through-hole mounting. C4D08120A is active product status, making it the preferred substitute for obsolete LSIC2SD120A08.

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

A: Both are through-hole TO-220 variants with two leads. TO-220AC and TO-220-2L are mechanically and electrically compatible for standard PCB applications. Pin spacing and mounting hole positions conform to industry standards. Substitution between these variants does not require PCB redesign.

Q: Can I use LSIC2SD120A10A as a substitute if my circuit requires exactly 24.5 A?

A: Yes. LSIC2SD120A10A is rated for 28 A average rectified current, which exceeds the 24.5 A requirement of LSIC2SD120A08. The higher current rating provides additional design margin without affecting circuit performance. All other electrical parameters remain compatible.

Q: Are there any thermal differences between substitute parts?

A: All listed substitutes maintain operating junction temperature range of -55°C to 175°C, identical to LSIC2SD120A08. Thermal performance depends on package thermal resistance and PCB thermal design. Consult individual datasheets for junction-to-case thermal resistance (θJC) values if thermal management is critical to application design.

Q: What is the significance of zero reverse recovery time?

A: Zero reverse recovery time (trr = 0 ns) indicates silicon carbide Schottky technology, which eliminates reverse recovery charge. This characteristic enables fast switching transitions with minimal switching losses, essential for high-frequency power conversion applications. All listed substitutes maintain this characteristic, ensuring compatibility with fast-switching circuit designs.

Q: Can I substitute FFSP08120A or FFSP10120A for LSIC2SD120A08?

A: FFSP08120A and FFSP10120A are onsemi silicon carbide Schottky diodes with 1200 V rating and TO-220-2L package. However, these parts specify reverse recovery time ≤500 ns rather than 0 ns. While functionally compatible for most applications, they do not provide identical switching characteristics. Use these alternatives only when circuit design permits slightly longer recovery time.

Q: What compliance certifications should I verify for production use?

A: All recommended active-status substitutes carry RoHS3 compliance and REACH unaffected status. Verify specific certifications required by your application and regional regulations. Littelfuse and Wolfspeed parts listed are certified for industrial and automotive applications where applicable.

Q: Is LSIC2SD120E15CC a suitable substitute?

A: LSIC2SD120E15CC maintains identical electrical specifications (1200 V, 24.5 A, 1.8 V @ 8 A, 0 ns trr) but uses TO-247AD package instead of TO-220AC. This part is suitable only if PCB layout accommodates the larger TO-247 footprint. TO-247AD provides superior thermal performance due to larger package size. However, LSIC2SD120E15CC is also obsolete product status, making it less preferable than active alternatives.

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