SR1660PTH Equivalent & Substitute Parts

Part Overview

The SR1660PTH is a Schottky diode array manufactured by Taiwan Semiconductor Corporation, configured as a 1 Pair Common Cathode with 60 V reverse voltage rating and 16 A average rectified current per diode. The device is packaged in TO-247-3 through-hole format and qualified to AEC-Q101 automotive standards.

The SR1660PTH is discontinued at DiGi Electronics. Equivalent and substitute parts are available from active product lines that maintain the same diode configuration, voltage rating, and package type while accommodating variations in current capacity and electrical characteristics.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	60 V
Current - Average Rectified (Io) (per Diode)	16 A
Voltage - Forward (Vf) (Max) @ If	700 mV @ 8 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 60 V
Operating Temperature - Junction	-55°C ~ 150°C
Mounting Type	Through Hole
Package / Case	TO-247-3
RoHS Status	ROHS3 Compliant
Grade	Automotive
Qualification	AEC-Q101

Substitute Part Grouping Explanation

Substitution of the SR1660PTH is determined by the following criteria:

Mandatory Parameters (Must Match):

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 60 V
Mounting Type: Through Hole
Package / Case: TO-247-3

Variable Parameters (Acceptable Variation):

Current - Average Rectified (Io) (per Diode): Substitute must equal or exceed 16 A
Voltage - Forward (Vf) (Max) @ If: Variation permitted within application tolerance
Current - Reverse Leakage @ Vr: Variation permitted within application tolerance
Operating Temperature - Junction: Substitute must support minimum -55°C ~ 150°C range or equivalent maximum rating

Compliance Considerations:

RoHS3 compliance preferred for new designs
AEC-Q101 qualification preferred for automotive applications

Parameter Comparison

Parameter	SR1660PTH	SR1660PT C0G	STPS3060CW	STPS30L60CW	STPS61L60CW	VS-MBR4060WT-N3
Manufacturer	Taiwan Semiconductor	Taiwan Semiconductor	STMicroelectronics	Vishay	STMicroelectronics	Vishay
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
Technology	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	60 V	60 V	60 V	60 V	60 V	60 V
Current - Average Rectified (Io) (per Diode)	16 A	16 A	15 A	15 A	30 A	20 A
Voltage - Forward (Vf) (Max) @ If	700 mV @ 8 A	700 mV @ 8 A	850 mV @ 15 A	800 mV @ 30 A	660 mV @ 30 A	720 mV @ 20 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 60 V	500 µA @ 60 V	150 µA @ 60 V	480 µA @ 60 V	800 µA @ 60 V	1 mA @ 60 V
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	150°C (Max)	150°C (Max)	150°C (Max)	-55°C ~ 150°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3
Product Status	Discontinued	Active	Active	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Equivalent (Direct Replacement):

SR1660PT C0G is the primary equivalent part. Manufactured by Taiwan Semiconductor Corporation, this part maintains identical electrical specifications to the SR1660PTH, including 16 A current rating, 700 mV forward voltage at 8 A, and -55°C to 150°C operating temperature range. The part is currently in active production status with 636 units in stock. RoHS3 compliance and identical package configuration (TO-247-3) ensure direct substitution capability.

Active Substitutes (Current Production):

STPS61L60CW (STMicroelectronics) provides the highest current capacity at 30 A per diode, exceeding the SR1660PTH specification. This part is suitable for applications requiring additional current margin. RoHS3 compliance and active product status support long-term availability. Forward voltage is 660 mV at 30 A, representing improved efficiency characteristics.

VS-MBR4060WT-N3 (Vishay) offers 20 A current capacity with 720 mV forward voltage at 20 A. This part maintains the full -55°C to 150°C operating temperature range of the original SR1660PTH and carries RoHS3 compliance. Current production status ensures supply continuity.

STPS3060CW (STMicroelectronics) provides 15 A current capacity, which is below the SR1660PTH specification of 16 A. This part is suitable only for applications where 15 A capacity is sufficient. RoHS3 compliance and active production status are confirmed.

Obsolete Substitute (Not Recommended for New Designs):

STPS30L60CW (Vishay) is marked as obsolete and carries RoHS non-compliant status. This part does not meet current regulatory requirements and should not be selected for new designs.

Frequently Asked Questions (FAQ)

Q: Can STPS3060CW replace SR1660PTH in all applications?

A: STPS3060CW is suitable only for applications where the diode current requirement does not exceed 15 A. The SR1660PTH is rated for 16 A per diode. If the application requires the full 16 A capacity, STPS3060CW is not an appropriate substitute.

Q: What is the difference between SR1660PTH and SR1660PT C0G?

A: Both parts are manufactured by Taiwan Semiconductor Corporation and share identical electrical specifications. The primary difference is product status: SR1660PTH is discontinued, while SR1660PT C0G is in active production. SR1660PT C0G is the direct replacement for discontinued SR1660PTH applications.

Q: Are all substitute parts RoHS3 compliant?

A: STPS30L60CW is RoHS non-compliant and obsolete. All other substitute parts listed (SR1660PT C0G, STPS3060CW, STPS61L60CW, and VS-MBR4060WT-N3) are RoHS3 compliant.

Q: Can STPS61L60CW be used as a direct replacement for SR1660PTH?

A: STPS61L60CW is electrically compatible with SR1660PTH in terms of voltage rating, configuration, and package type. The 30 A current rating exceeds the SR1660PTH specification of 16 A, making it suitable for applications requiring higher current capacity or additional design margin. Forward voltage characteristics differ (660 mV at 30 A versus 700 mV at 8 A), which may affect circuit performance in applications sensitive to forward voltage variation.

Q: What is the operating temperature range of substitute parts?

A: SR1660PTH and SR1660PT C0G specify -55°C to 150°C. VS-MBR4060WT-N3 also specifies -55°C to 150°C. STPS3060CW, STPS30L60CW, and STPS61L60CW specify 150°C maximum only, without a minimum temperature specification. For applications requiring full -55°C to 150°C range, SR1660PT C0G or VS-MBR4060WT-N3 are appropriate selections.

Q: Are all substitute parts available in TO-247-3 package?

A: Yes. All substitute parts listed are packaged in TO-247-3 through-hole format, ensuring mechanical and thermal compatibility with SR1660PTH PCB layouts and mounting requirements.

Q: What is the reverse leakage current difference between substitute parts?

A: Reverse leakage current at 60 V varies among substitutes: SR1660PTH and SR1660PT C0G specify 500 µA; STPS3060CW specifies 150 µA; STPS30L60CW specifies 480 µA; STPS61L60CW specifies 800 µA; VS-MBR4060WT-N3 specifies 1 mA. Applications sensitive to leakage current should verify compatibility with the selected substitute.

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