LSIC2SD120C08 Equivalent & Substitute Parts

Part Overview

The LSIC2SD120C08 is a Silicon Carbide (SiC) Schottky diode rated for 1200 V DC reverse voltage and 24.5 A average rectified current in a Surface Mount TO-252 (DPAK) package. Manufactured by Littelfuse Inc., this component operates across a junction temperature range of -55°C to 175°C with zero reverse recovery time, characteristic of SiC Schottky technology.

The LSIC2SD120C08 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production and field replacements. Substitute components must maintain electrical compatibility within the specified voltage and current parameters while accommodating mechanical and thermal requirements of the TO-252 package family.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1200	V
Current - Average Rectified (Io)	24.5	A
Voltage - Forward (Vf) (Max) @ 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	-
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	-
Mounting Type	Surface Mount	-
Operating Temperature - Junction	-55 to 175	°C

Substitute Part Grouping Explanation

Substitution of the LSIC2SD120C08 is determined by the following critical electrical and mechanical parameters:

Voltage Compatibility: All substitute parts must maintain a DC reverse voltage rating of 1200 V to ensure equivalent blocking capability in the application circuit.

Current Rating: The original part is rated for 24.5 A average rectified current. Substitute parts are grouped into two categories:

Direct Current Match (24.5 A): Parts with identical or higher current ratings that provide drop-in replacement capability without circuit redesign.
Lower Current Ratings (6 A to 19 A): Parts with reduced current capacity that require circuit evaluation but maintain voltage compatibility.

Package Compatibility: All substitute parts use the TO-252-3 DPAK (2 Leads + Tab) package, ensuring mechanical and thermal interface compatibility with the original design.

Technology Consistency: All substitute parts employ SiC Schottky technology, maintaining the zero reverse recovery time characteristic and thermal performance profile of the original component.

Forward Voltage Characteristics: Forward voltage drop varies across substitute parts (1.75 V to 3.0 V at specified test currents). Selection depends on application power dissipation requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V @ A]	Reverse Leakage @ Vr [µA]	Package	Product Status
LSIC2SD120C08	Littelfuse Inc.	1200	24.5	1.8 @ 8	100 @ 1200	TO-252-3 DPAK	Obsolete
C4D02120E	Wolfspeed, Inc.	1200	10	1.8 @ 2	50 @ 1200	TO-252-3 DPAK	Active
C4D02120E-TR	Wolfspeed, Inc.	1200	10	1.8 @ 2	50 @ 1200	TO-252-3 DPAK	Active
C4D05120E	Wolfspeed, Inc.	1200	19	1.8 @ 5	150 @ 1200	TO-252-3 DPAK	Active
C4D05120E-TR	Wolfspeed, Inc.	1200	19	1.8 @ 5	150 @ 1200	TO-252-3 DPAK	Active
C4D08120E	Wolfspeed, Inc.	1200	24.5	3.0 @ 2	250 @ 1200	TO-252-3 DPAK	Active
C4D10120E	Wolfspeed, Inc.	1200	33	1.8 @ 10	250 @ 1200	TO-252-3 DPAK	Active
C4D10120E-TR	Wolfspeed, Inc.	1200	33	1.8 @ 10	250 @ 1200	TO-252-3 DPAK	Active
FFSD10120A	onsemi	1200	Not Specified	1.75 @ 10	200 @ 1200	TO-252-3 DPAK	Active
S4D08120E	SMC Diode Solutions	1200	8	1.8 @ 8	15 @ 1200	TO-252-3 DPAK	Active
STPSC6H12B-TR1	STMicroelectronics	1200	6	1.9 @ 6	400 @ 1200	TO-252-3 DPAK	Active

Engineering Selection Recommendations

Direct Replacement (Current Match):

The C4D08120E (Wolfspeed, Inc.) provides the closest electrical match to the LSIC2SD120C08, with identical 1200 V voltage rating and 24.5 A current rating. This part is Active status and ROHS3 Compliant. The primary difference is forward voltage specification (3.0 V @ 2 A versus 1.8 V @ 8 A), which affects thermal dissipation characteristics. The C4D08120E is available in Tube packaging.

The C4D10120E and C4D10120E-TR (Wolfspeed, Inc.) offer higher current capacity (33 A) at the same 1200 V rating, providing design margin for applications requiring current headroom. Both are Active status and ROHS3 Compliant. The -TR variant is supplied in Cut Tape (CT) & Digi-Reel® packaging.

Alternative Suppliers:

The FFSD10120A (onsemi) maintains 1200 V voltage compatibility with Active product status and ROHS3 Compliance. This part is supplied in Tape & Reel (TR) packaging with MSL 1 (Unlimited) moisture sensitivity rating.

Lower Current Alternatives:

The C4D05120E and C4D05120E-TR (Wolfspeed, Inc.) provide 19 A capacity at 1200 V, suitable for applications with reduced current requirements. Both are Active status and ROHS3 Compliant.

The C4D02120E and C4D02120E-TR (Wolfspeed, Inc.) provide 10 A capacity at 1200 V. The -TR variant offers higher inventory availability (23,135 pcs) in Cut Tape & Digi-Reel® packaging.

Compliance Considerations:

All recommended substitute parts are ROHS3 Compliant and classified as EAR99 for export control purposes. Wolfspeed parts are REACH Affected; onsemi and STMicroelectronics parts have specified REACH status. Moisture sensitivity levels range from MSL 1 (Unlimited) to MSL 3 (168 Hours), affecting storage and handling requirements.

Frequently Asked Questions (FAQ)

Q: Can the C4D08120E directly replace the LSIC2SD120C08?

A: The C4D08120E provides electrical equivalence at 1200 V and 24.5 A ratings with identical package (TO-252-3 DPAK). The forward voltage specification differs (3.0 V @ 2 A versus 1.8 V @ 8 A), which affects power dissipation. Circuit thermal analysis is required to confirm suitability for the specific application.

Q: What is the difference between C4D02120E and C4D02120E-TR?

A: Both parts are electrically identical (1200 V, 10 A, SiC Schottky). The primary difference is packaging: C4D02120E is supplied in Tube; C4D02120E-TR is supplied in Cut Tape (CT) & Digi-Reel®. The -TR variant has significantly higher inventory availability (23,135 pcs versus 1,845 pcs).

Q: Can I use a lower current rated part like the C4D05120E (19 A) instead of the LSIC2SD120C08 (24.5 A)?

A: Lower current rated parts maintain 1200 V voltage compatibility and TO-252-3 DPAK package compatibility. Selection depends on application current requirements. If the circuit operates below 19 A, the C4D05120E is electrically suitable. If the circuit requires the full 24.5 A capacity, a higher or equal current rated part is necessary.

Q: What are the packaging options available for substitute parts?

A: Substitute parts are available in three packaging formats: Tube (standard reel), Cut Tape (CT) & Digi-Reel® (for automated assembly), and Tape & Reel (TR). Package selection depends on manufacturing process requirements and inventory management practices.

Q: How do forward voltage differences affect part selection?

A: Forward voltage drop directly impacts power dissipation (P = Vf × If). The LSIC2SD120C08 specifies 1.8 V @ 8 A; the C4D08120E specifies 3.0 V @ 2 A. At identical operating currents, higher forward voltage results in greater heat generation. Thermal design calculations must account for these differences to ensure junction temperature remains within the -55°C to 175°C operating range.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed are ROHS3 Compliant. REACH compliance status varies by manufacturer: Wolfspeed parts are REACH Affected; onsemi FFSD10120A is REACH Unaffected; STMicroelectronics STPSC6H12B-TR1 is REACH Unaffected.

Q: What is the significance of MSL (Moisture Sensitivity Level) ratings?

A: MSL ratings specify storage and handling requirements. MSL 1 (Unlimited) parts have no moisture sensitivity restrictions. MSL 3 (168 Hours) parts require controlled storage conditions and have a 168-hour floor life after opening. Selection depends on manufacturing environment and inventory management capabilities.

Q: Can I substitute parts from different manufacturers?

A: Yes. All substitute parts maintain 1200 V voltage rating, TO-252-3 DPAK package compatibility, and SiC Schottky technology. Manufacturer differences do not prevent substitution provided electrical and mechanical parameters are compatible with the application circuit.

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