FFSP05120A Silicon Carbide Schottky Diode 1200V TO-220-2L Equivalent & Substitute Parts

Part Overview

The FFSP05120A is a 1200V silicon carbide Schottky diode manufactured by onsemi in TO-220-2L through-hole packaging. This component is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The device operates as a high-voltage rectifier with zero reverse recovery time, characteristic of SiC Schottky technology. Equivalent and substitute parts are necessary to ensure design continuity, maintain supply chain flexibility, and accommodate alternative sourcing strategies when the primary part reaches end-of-life status.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) Maximum	1200	V
Voltage - Forward (Vf) Maximum @ If	1.75 @ 5	V @ A
Current - Average Rectified (Io)	5	A
Reverse Recovery Time (trr)	0	ns
Current - Reverse Leakage @ Vr	200	µA @ 1200V
Technology	SiC Schottky	—
Mounting Type	Through Hole	—
Package / Case	TO-220-2	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the FFSP05120A is determined by the following mandatory parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) Maximum: 1200V (exact match required)
Technology: SiC (Silicon Carbide) Schottky (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: TO-220-2 (exact match required)
Reverse Recovery Time (trr): 0 ns (exact match required)

Secondary Compatibility Parameters:

Current - Average Rectified (Io): 5A or higher
Voltage - Forward (Vf) Maximum @ If: 1.75V or lower at rated current
Current - Reverse Leakage @ Vr: 200µA or lower at 1200V
RoHS Status: ROHS3 Compliant (exact match required)

Substitute parts are grouped by current rating. Parts with equal or higher current capacity (5A, 10A, 15A, 20A) are functionally compatible with the FFSP05120A in applications where the forward voltage and leakage current specifications are met or exceeded.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) V	Io A	Vf (Max) @ If V	Reverse Leakage @ Vr µA	Package	Product Status	Inventory Pcs
FFSP05120A	onsemi	1200	5	1.75 @ 5	200 @ 1200V	TO-220-2	Last Time Buy	1561
LFUSCD05120A	Littelfuse Inc.	1200	5	1.7 @ 5	190 @ 1200V	TO-220-2	Active	867
LFUSCD10120A	Littelfuse Inc.	1200	10	1.7 @ 10	250 @ 1200V	TO-220-2	Active	5700
LFUSCD15120A	Littelfuse Inc.	1200	15	1.7 @ 15	375 @ 1200V	TO-220-2	Active	1048
PCDP05120G1_T0_00001	Panjit International Inc.	1200	5	1.7 @ 5	50 @ 1200V	TO-220-2	Active	2697
S4D05120A	SMC Diode Solutions	1200	5	1.8 @ 5	20 @ 1200V	TO-220-2	Active	1717
STPSC15H12DY	STMicroelectronics	1200	15	1.5 @ 15	90 @ 1200V	TO-220-2	Obsolete	1926
STPSC20H12DY	STMicroelectronics	1200	20	1.5 @ 20	120 @ 1200V	TO-220-2	Obsolete	2071
STPSC2H12D	STMicroelectronics	1200	2	1.5 @ 2	12 @ 1200V	TO-220-2	Active	3432
STPSC5H12D	STMicroelectronics	1200	5	1.5 @ 5	30 @ 1200V	TO-220-2	Active	3429

Engineering Selection Recommendations

Direct Equivalent (5A Current Rating):

STPSC5H12D (STMicroelectronics) is the primary recommended substitute for FFSP05120A. This part maintains identical voltage and current specifications with superior electrical characteristics: forward voltage of 1.5V at 5A (0.25V lower than FFSP05120A) and reverse leakage of 30µA at 1200V (170µA lower). Product status is Active with 3429 units in inventory. ROHS3 compliance and AEC-Q101 automotive qualification are confirmed.

LFUSCD05120A (Littelfuse Inc.) provides equivalent 5A current capacity with forward voltage of 1.7V at 5A and reverse leakage of 190µA at 1200V. Product status is Active with 867 units available. ROHS3 compliance is confirmed.

PCDP05120G1_T0_00001 (Panjit International Inc.) offers 5A current rating with superior reverse leakage performance of 50µA at 1200V and forward voltage of 1.7V at 5A. Product status is Active with 2697 units in inventory. ROHS3 compliance is confirmed.

S4D05120A (SMC Diode Solutions) provides 5A current capacity with forward voltage of 1.8V at 5A and exceptional reverse leakage of 20µA at 1200V. Product status is Active with 1717 units available. ROHS3 compliance is confirmed.

Higher Current Rating Alternatives (10A, 15A, 20A):

LFUSCD10120A, LFUSCD15120A, STPSC15H12DY, and STPSC20H12DY are functionally compatible for applications where higher current capacity is acceptable. These parts maintain 1200V reverse voltage and zero reverse recovery time. Selection depends on circuit current requirements and thermal management capability.

Avoid:

STPSC2H12D is not suitable as a substitute due to insufficient current rating (2A versus 5A required).

STPSC15H12DY and STPSC20H12DY are classified as Obsolete and should not be selected for new designs despite current inventory availability.

Frequently Asked Questions (FAQ)

Q: Can STPSC5H12D directly replace FFSP05120A in existing designs?

A: Yes. STPSC5H12D meets all mandatory substitution criteria: 1200V reverse voltage, 5A current rating, SiC Schottky technology, TO-220-2 package, zero reverse recovery time, and ROHS3 compliance. Forward voltage is 0.25V lower, providing improved efficiency. No circuit modifications are required.

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

A: TO-220-2 and TO-220AC refer to the same physical package configuration with two leads. The designations are manufacturer-specific nomenclature. All substitute parts listed use identical mechanical and thermal interfaces.

Q: Why is LFUSCD10120A listed as a substitute if it has 10A rating instead of 5A?

A: Higher current-rated devices are functionally compatible in applications designed for 5A operation. The 10A part will operate safely at 5A with lower junction temperature and improved reliability margin. Selection depends on whether the application circuit can accommodate the slightly different electrical characteristics at the lower operating current.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance, matching the FFSP05120A specification.

Q: Should STPSC15H12DY or STPSC20H12DY be used for new designs?

A: No. Both parts are classified as Obsolete. While inventory is currently available, new designs should select from Active status parts: STPSC5H12D, LFUSCD05120A, PCDP05120G1_T0_00001, or S4D05120A.

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

A: Zero reverse recovery time is a characteristic of SiC Schottky diodes. This eliminates reverse recovery losses present in silicon diodes, reducing switching losses and improving efficiency in high-frequency applications. All substitute parts maintain this specification.

Q: Can PCDP05120G1_T0_00001 be used in automotive applications?

A: PCDP05120G1_T0_00001 does not list AEC-Q101 automotive qualification in the provided specifications. STPSC5H12D and STPSC15H12DY carry explicit AEC-Q101 qualification for automotive use. Verify application requirements before selection.

Q: What is the inventory status for long-term supply?

A: FFSP05120A is Last Time Buy with 1561 units available. For sustained supply, select from Active status parts: STPSC5H12D (3429 units), STPSC2H12D (3432 units), LFUSCD10120A (5700 units), or PCDP05120G1_T0_00001 (2697 units).

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message