SCS140AE2C Equivalent & Substitute Parts

Part Overview

The SCS140AE2C is a Silicon Carbide Schottky diode array manufactured by Rohm Semiconductor, configured as a 1 Pair Common Cathode with 600 V reverse voltage rating and 20 A average rectified current per diode. The device is packaged in TO-247-3 through-hole format and is classified as obsolete product status. Due to its obsolete classification, equivalent and substitute parts from active manufacturers are necessary for ongoing design requirements and procurement continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	SCS140AE2C
Manufacturer	Rohm Semiconductor
Category	Diodes, Rectifiers
Diode Configuration	1 Pair Common Cathode
Technology	SiC (Silicon Carbide) Schottky
Voltage - DC Reverse (Vr) (Max)	600 V
Current - Average Rectified (Io) (per Diode)	20 A (DC)
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 20 A
Reverse Recovery Time (trr)	0 ns
Current - Reverse Leakage @ Vr	400 µA @ 600 V
Operating Temperature - Junction (Max)	175°C
Mounting Type	Through Hole
Package / Case	TO-247-3
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SCS140AE2C is determined by the following critical parameters: diode configuration (1 Pair Common Cathode), package type (TO-247-3 through-hole), voltage rating (600 V minimum), and current rating (20 A minimum per diode). The substitute parts are grouped into two categories based on technology type and current capacity:

Category 1: SiC Schottky Technology with 20 A Current Rating Parts in this category maintain the same Silicon Carbide Schottky technology as the original SCS140AE2C with equivalent or higher current ratings at 600 V or higher voltage ratings. These parts provide direct functional equivalence.

Category 2: SiC Schottky Technology with Reduced Current Ratings (8 A to 10 A) Parts in this category use SiC Schottky technology but with reduced current ratings below the original 20 A specification. These parts are suitable for applications with lower current requirements.

Category 3: Standard Technology Alternative The STTH30L06CW uses standard fast-recovery diode technology instead of SiC Schottky, maintaining the same voltage and current ratings. This part is suitable for applications where SiC technology is not required.

Parameter Comparison

Parameter	SCS140AE2C (Main)	STPSC20H065CW	C3D16065D	C3D20060D	C3D16060D	STPSC2006CW	STTH30L06CW
Manufacturer	Rohm Semiconductor	STMicroelectronics	Wolfspeed, Inc.	Wolfspeed, Inc.	Wolfspeed, Inc.	STMicroelectronics	STMicroelectronics
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	SiC Schottky	SiC Schottky	SiC Schottky	SiC Schottky	SiC Schottky	SiC Schottky	Standard
Voltage - DC Reverse (Vr) (Max)	600 V	650 V	650 V	600 V	600 V	600 V	600 V
Current - Average Rectified (Io) (per Diode)	20 A	10 A	8 A	10 A	8 A	10 A	20 A
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 20 A	1.75 V @ 10 A	1.8 V @ 8 A	1.8 V @ 10 A	1.8 V @ 8 A	1.7 V @ 10 A	1.55 V @ 15 A
Reverse Recovery Time (trr)	0 ns	0 ns	0 ns	0 ns	0 ns	Not specified	85 ns
Current - Reverse Leakage @ Vr	400 µA @ 600 V	100 µA @ 650 V	60 µA @ 650 V	50 µA @ 600 V	50 µA @ 600 V	150 µA @ 600 V	15 µA @ 600 V
Operating Temperature - Junction	175°C (Max)	-40°C ~ 175°C	-55°C ~ 175°C	-55°C ~ 175°C	-55°C ~ 175°C	-40°C ~ 175°C	175°C (Max)
Package / Case	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct SiC Schottky Replacement with Full Current Rating: The STTH30L06CW from STMicroelectronics is not suitable as it uses standard fast-recovery technology rather than SiC Schottky. No substitute part maintains the exact 20 A current rating with SiC Schottky technology at 600 V in the provided list.

For SiC Schottky Replacement with Reduced Current Requirements: The STPSC20H065CW, C3D20060D, and STPSC2006CW are suitable for applications requiring 10 A or less per diode. The STPSC20H065CW and STPSC2006CW offer 650 V and 600 V ratings respectively, both with 10 A capacity. The C3D20060D provides 600 V at 10 A with extended temperature range (-55°C to 175°C). All three maintain SiC Schottky technology and ROHS3 compliance.

For Lower Current SiC Schottky Applications: The C3D16060D and C3D16065D are suitable for applications requiring 8 A or less per diode, with the C3D16065D offering higher voltage rating (650 V) and extended temperature range.

For Standard Technology Alternative: The STTH30L06CW maintains the 20 A current rating and 600 V voltage rating with standard fast-recovery technology, suitable for applications where SiC Schottky characteristics are not required. This part has lower forward voltage (1.55 V @ 15 A) and significantly lower reverse leakage (15 µA @ 600 V) compared to the original part.

All substitute parts are active products with ROHS3 compliance and REACH unaffected status, ensuring regulatory compliance and long-term availability.

Frequently Asked Questions (FAQ)

Q: Can the STTH30L06CW directly replace the SCS140AE2C? A: The STTH30L06CW matches the voltage (600 V) and current (20 A) ratings and uses the same TO-247-3 package. However, it uses standard fast-recovery diode technology instead of SiC Schottky technology. This substitution is valid for applications where the specific SiC Schottky characteristics of the original part are not required.

Q: Why do some substitute parts have lower current ratings than the original SCS140AE2C? A: The C3D16060D, C3D16065D, and related parts with 8 A or 10 A ratings are suitable for applications with lower current requirements. These parts cannot be used in circuits designed for the full 20 A capacity of the SCS140AE2C.

Q: What is the significance of the 0 ns reverse recovery time in SiC Schottky parts? A: SiC Schottky diodes have inherently zero reverse recovery time due to their Schottky junction structure, unlike standard diodes which exhibit recovery time (85 ns for the STTH30L06CW). This characteristic reduces switching losses and improves efficiency in high-frequency applications.

Q: Are all substitute parts RoHS3 compliant? A: All substitute parts listed are ROHS3 compliant. The original SCS140AE2C is also ROHS3 compliant, ensuring regulatory consistency across all options.

Q: What is the difference between the STPSC20H065CW and STPSC2006CW? A: Both parts use SiC Schottky technology with 10 A current rating. The STPSC20H065CW has a 650 V rating with 1.75 V forward voltage, while the STPSC2006CW has a 600 V rating with 1.7 V forward voltage. The STPSC2006CW offers lower forward voltage drop at the cost of lower voltage rating.

Q: Can I use a substitute part with a higher voltage rating than the original? A: Yes. Parts with higher voltage ratings (such as 650 V substitutes for a 600 V original) are electrically compatible and can be used in circuits designed for the lower voltage. The higher voltage rating provides additional safety margin.

Q: What is the impact of different reverse leakage currents on circuit design? A: Reverse leakage current affects power dissipation and circuit performance at high temperatures. The original SCS140AE2C has 400 µA @ 600 V leakage, while substitutes range from 15 µA to 150 µA. Lower leakage reduces standby power consumption and heat generation.

Q: Are the Wolfspeed Z-Rec® parts interchangeable with STMicroelectronics parts? A: Both manufacturers produce SiC Schottky diodes with similar electrical characteristics. Interchangeability depends on matching the specific voltage, current, and temperature requirements of the application. All parts listed use the same TO-247-3 package for mechanical compatibility.

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