STPSC1206D Silicon Carbide Schottky Diode Equivalent & Substitute Parts

Part Overview

The STPSC1206D is a 600 V, 12 A silicon carbide Schottky diode manufactured by STMicroelectronics in a through-hole TO-220AC package. This device is designed for high-frequency rectification applications requiring zero reverse recovery time and low forward voltage drop characteristics inherent to SiC Schottky technology. The part is currently active in production with 54,509 units in stock and carries ROHS3 compliance certification.

Substitute parts are necessary when the STPSC1206D is unavailable, when application requirements demand higher current ratings, elevated voltage ratings, or when alternative manufacturer sourcing is required for supply chain continuity.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	12	A
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 12 A	V
Reverse Recovery Time (trr)	0	ns
Current - Reverse Leakage @ Vr	150	µA @ 600 V
Technology	SiC (Silicon Carbide) Schottky	—
Mounting Type	Through Hole	—
Package / Case	TO-220-2	—
Operating Temperature - Junction	-40 to 175	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the STPSC1206D is determined by the following electrical and mechanical parameters:

Primary Substitution Criteria:

Technology: SiC (Silicon Carbide) Schottky (all substitutes must match)
Mounting Type: Through Hole (all substitutes must match)
Package / Case: TO-220-2 or TO-220AC (compatible package families)
Voltage - DC Reverse (Vr) (Max): Equal to or greater than 600 V
Current - Average Rectified (Io): Equal to or greater than 12 A
Reverse Recovery Time (trr): 0 ns (zero recovery time requirement)

Secondary Compatibility Factors:

Forward voltage drop (Vf) characteristics within acceptable operating range
Reverse leakage current performance
Operating temperature range coverage
RoHS3 compliance and regulatory alignment

Substitute parts are grouped into two categories: direct replacements (600 V, 12 A rating) and higher-rated alternatives (650 V with increased current capacity). All listed substitutes maintain zero reverse recovery time and SiC Schottky technology.

Parameter Comparison

Manufacturer	Part Number	Vr (Max) [V]	Io [A]	Vf (Max) [V]	Reverse Leakage @ Vr [µA]	Package	Status
STMicroelectronics	STPSC1206D	600	12	1.7 @ 12 A	150 @ 600 V	TO-220AC	Active
Wolfspeed, Inc.	C3D04060A	600	13.5	1.8 @ 4 A	50 @ 600 V	TO-220-2	Active
Wolfspeed, Inc.	C3D04065A	650	13.5	1.8 @ 4 A	60 @ 650 V	TO-220-2	Active
Wolfspeed, Inc.	C3D06065A	650	19	1.8 @ 6 A	60 @ 650 V	TO-220-2	Active
Wolfspeed, Inc.	C3D08065A	650	24	1.8 @ 8 A	60 @ 650 V	TO-220-2	Active
Wolfspeed, Inc.	C3D10065A	650	30	1.8 @ 10 A	60 @ 650 V	TO-220-2	Active
Infineon Technologies	IDH04S60CAKSA1	600	4	1.9 @ 4 A	50 @ 600 V	TO-220-2	Discontinued
Infineon Technologies	IDH05SG60CXKSA1	600	5	2.3 @ 5 A	30 @ 600 V	TO-220-2	Discontinued
Infineon Technologies	IDH06S60CAKSA1	600	6	1.7 @ 6 A	80 @ 600 V	TO-220-2	Discontinued
Infineon Technologies	IDH10S60CAKSA1	600	10	1.7 @ 10 A	140 @ 600 V	TO-220-2	Discontinued
Panjit International Inc.	PCDP1265G1_T0_00001	650	12	1.7 @ 12 A	80 @ 650 V	TO-220AC	Active

Engineering Selection Recommendations

Direct Substitutes (Recommended for 1:1 Replacement):

The PCDP1265G1_T0_00001 from Panjit International Inc. is the closest functional equivalent. It maintains the 12 A current rating and 1.7 V forward voltage characteristic at rated current. The voltage rating is elevated to 650 V, providing additional design margin. This part is currently active in production with 3,131 units in stock and carries ROHS3 compliance.

The C3D04060A from Wolfspeed, Inc. provides 600 V operation with 13.5 A capacity, exceeding the STPSC1206D current requirement. This part is active and widely available with 16,272 units in stock.

Higher-Rated Alternatives (For Upgraded Performance):

The Wolfspeed Z-Rec® series (C3D06065A, C3D08065A, C3D10065A) offers elevated voltage ratings (650 V) with progressively higher current capacities (19 A, 24 A, 30 A respectively). These parts are suitable for applications requiring enhanced thermal headroom or higher current handling. All are currently active with substantial inventory availability.

Parts Not Recommended for New Designs:

The Infineon CoolSiC™+ series (IDH04S60CAKSA1, IDH05SG60CXKSA1, IDH06S60CAKSA1, IDH10S60CAKSA1) are discontinued at DiGi Electronics. While limited inventory exists, these parts should not be selected for new product development due to end-of-life status.

Compliance and Regulatory Alignment:

All recommended active substitutes carry ROHS3 compliance certification and REACH Unaffected status, matching the regulatory profile of the STPSC1206D. All parts are classified under ECCN EAR99 and HTSUS 8541.10.0080.

Frequently Asked Questions (FAQ)

Q: Can the C3D04060A replace the STPSC1206D in all applications?

A: The C3D04060A is electrically compatible as a direct substitute. It maintains 600 V reverse voltage rating and exceeds the 12 A current requirement with 13.5 A capacity. The forward voltage characteristic (1.8 V @ 4 A) is slightly higher than the STPSC1206D (1.7 V @ 12 A), but both operate within typical SiC Schottky performance ranges. Package compatibility is confirmed (TO-220-2 family). Thermal design should account for the different current rating.

Q: What is the advantage of using C3D10065A over the STPSC1206D?

A: The C3D10065A provides 650 V reverse voltage rating and 30 A current capacity compared to the STPSC1206D's 600 V and 12 A. The elevated voltage rating provides additional design margin for transient overvoltage conditions. The higher current capacity reduces thermal stress in the device, potentially improving reliability and extending operational life in high-current applications. Both maintain zero reverse recovery time and SiC Schottky technology.

Q: Are the TO-220AC and TO-220-2 packages mechanically interchangeable?

A: Both TO-220AC and TO-220-2 are through-hole packages with identical lead spacing and mounting hole patterns. They are mechanically interchangeable on standard PCB layouts. The primary difference is in lead configuration and thermal characteristics. Verify PCB footprint compatibility before substitution.

Q: Why are the Infineon IDH series parts listed as discontinued?

A: The Infineon CoolSiC™+ series diodes (IDH04S60CAKSA1, IDH05SG60CXKSA1, IDH06S60CAKSA1, IDH10S60CAKSA1) are marked as discontinued at DiGi Electronics, indicating end-of-life status. While limited inventory may be available through alternative channels, these parts are not recommended for new designs. Active alternatives from Wolfspeed and Panjit provide equivalent or superior performance with assured long-term availability.

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

A: Zero reverse recovery time is a defining characteristic of SiC Schottky diodes. Unlike silicon junction diodes, SiC Schottky devices do not exhibit reverse recovery transients during switching transitions. This eliminates reverse recovery losses, reduces electromagnetic interference, and enables higher switching frequencies. All listed substitutes maintain this zero recovery time specification.

Q: Can I use a higher-rated diode (e.g., C3D10065A) in place of the STPSC1206D without circuit modification?

A: Yes, higher-rated diodes are generally suitable as substitutes provided the application circuit does not depend on specific forward voltage or leakage current characteristics. The C3D10065A's higher current capacity (30 A vs. 12 A) and elevated voltage rating (650 V vs. 600 V) represent design improvements. Verify that the forward voltage drop at your operating current does not adversely affect circuit performance, and confirm thermal management is adequate for the device's power dissipation profile.

Q: What is the difference between the Wolfspeed Z-Rec® series parts?

A: The Wolfspeed Z-Rec® series diodes (C3D04060A, C3D04065A, C3D06065A, C3D08065A, C3D10065A) differ in voltage rating and current capacity. The C3D04060A operates at 600 V with 13.5 A capacity. The remaining parts operate at 650 V with current ratings of 13.5 A, 19 A, 24 A, and 30 A respectively. Selection depends on application voltage and current requirements. Higher-rated devices provide greater thermal margin but may introduce unnecessary cost and board space considerations.

Q: Is the PCDP1265G1_T0_00001 a direct replacement for the STPSC1206D?

A: The PCDP1265G1_T0_00001 is the closest functional equivalent to the STPSC1206D. Both maintain 12 A current rating and 1.7 V forward voltage at rated current. The PCDP1265G1_T0_00001 operates at 650 V (versus 600 V), providing additional voltage margin. Both use TO-220AC packaging and carry ROHS3 compliance. This part is currently active in production with 3,131 units available.

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