TSF20U80C Equivalent & Substitute Parts

Part Overview

The TSF20U80C is a Schottky diode array manufactured by Taiwan Semiconductor Corporation, configured as a 1 Pair Common Cathode with 80 V reverse voltage rating and 10 A average rectified current per diode. The device is packaged in TO-220-3 Full Pack with isolated tab for through-hole mounting applications.

The TSF20U80C is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production and field replacements.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	80 V
Current - Average Rectified (Io) (per Diode)	10 A
Voltage - Forward (Vf) (Max) @ If	770 mV @ 10 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	600 µA @ 80 V
Operating Temperature - Junction	-55°C ~ 150°C
Mounting Type	Through Hole
Package / Case	TO-220-3 Full Pack, Isolated Tab
Supplier Device Package	ITO-220AB
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution of the TSF20U80C is determined by the following critical parameters:

Mandatory Matching Parameters:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 80 V
Mounting Type: Through Hole
Package / Case: TO-220-3 Full Pack, Isolated Tab
Supplier Device Package: ITO-220AB

Current Rating Consideration: The TSF20U80C operates at 10 A average rectified current per diode. Substitute parts are grouped by current rating capability:

Direct Equivalent (10 A): VFT2080C-E3/4W matches the 10 A current specification exactly
Lower Current Rating (5 A): VFT1080C-E3/4W operates at reduced current capacity and is suitable for applications with lower current demands
Higher Current Rating (15 A): VFT3080C-E3/4W and VFT3080C-M3/4W provide increased current capacity for higher-demand applications

All substitute parts maintain identical reverse voltage rating (80 V), diode configuration, technology type, and package specifications.

Parameter Comparison

Parameter	TSF20U80C	VFT1080C-E3/4W	VFT2080C-E3/4W	VFT3080C-E3/4W	VFT3080C-M3/4W
Manufacturer	Taiwan Semiconductor Corporation	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Product Status	Obsolete	Active	Active	Active	Active
Diode Configuration	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
Voltage - DC Reverse (Vr) (Max)	80 V	80 V	80 V	80 V	80 V
Current - Average Rectified (Io) (per Diode)	10 A	5 A	10 A	15 A	15 A
Voltage - Forward (Vf) (Max) @ If	770 mV @ 10 A	720 mV @ 5 A	810 mV @ 10 A	820 mV @ 15 A	820 mV @ 15 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	600 µA @ 80 V	400 µA @ 80 V	600 µA @ 80 V	700 µA @ 80 V	700 µA @ 80 V
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab
Supplier Device Package	ITO-220AB	ITO-220AB	ITO-220AB	ITO-220AB	ITO-220AB
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Direct Replacement (10 A Current Rating): VFT2080C-E3/4W is the primary substitute for TSF20U80C. Both devices operate at 10 A average rectified current with identical 80 V reverse voltage rating, diode configuration, and package specifications. VFT2080C-E3/4W is manufactured by Vishay General Semiconductor - Diodes Division and maintains Active product status with full ROHS3 compliance and REACH Unaffected certification. Forward voltage at 10 A is 810 mV compared to 770 mV for the original part, representing a 40 mV increase within acceptable operating margins for Schottky diode arrays.

Lower Current Alternative (5 A Current Rating): VFT1080C-E3/4W is suitable for applications where circuit current demands do not exceed 5 A per diode. This part maintains all package and configuration specifications of the TSF20U80C while reducing current capacity. VFT1080C-E3/4W exhibits lower reverse leakage current (400 µA @ 80 V versus 600 µA @ 80 V) and lower forward voltage (720 mV @ 5 A), making it appropriate for lower-power circuit implementations.

Higher Current Alternative (15 A Current Rating): VFT3080C-E3/4W and VFT3080C-M3/4W both provide 15 A average rectified current capacity while maintaining identical voltage ratings and package specifications. These parts are suitable for applications requiring increased current handling beyond the 10 A specification of TSF20U80C. Both variants are manufactured by Vishay General Semiconductor - Diodes Division with Active product status.

All substitute parts maintain compliance with ROHS3 and REACH requirements, ensuring regulatory compatibility with the original TSF20U80C specification.

Frequently Asked Questions (FAQ)

Q: Can VFT2080C-E3/4W be used as a direct replacement for TSF20U80C?

A: Yes. VFT2080C-E3/4W is a direct equivalent substitute. Both devices are configured as 1 Pair Common Cathode Schottky diode arrays with 80 V reverse voltage rating and 10 A average rectified current per diode. Package specifications, mounting type, and thermal operating range are identical. The forward voltage difference of 40 mV at 10 A is within normal operating variation for Schottky diode arrays.

Q: What is the difference between VFT3080C-E3/4W and VFT3080C-M3/4W?

A: Both VFT3080C-E3/4W and VFT3080C-M3/4W are 15 A Schottky diode arrays with identical electrical specifications, diode configuration, voltage ratings, and package specifications. The difference lies in packaging designation (E3/4W versus M3/4W), which reflects different supplier packaging formats. Both parts are functionally equivalent for circuit applications.

Q: Can VFT1080C-E3/4W replace TSF20U80C in a 10 A application?

A: VFT1080C-E3/4W is rated for 5 A average rectified current per diode, which is below the 10 A requirement of TSF20U80C. This part is not suitable for applications requiring the full 10 A current capacity. Use VFT2080C-E3/4W for 10 A applications or VFT3080C-E3/4W and VFT3080C-M3/4W for applications exceeding 10 A.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (VFT1080C-E3/4W, VFT2080C-E3/4W, VFT3080C-E3/4W, and VFT3080C-M3/4W) are ROHS3 compliant and REACH Unaffected, matching the regulatory status of the original TSF20U80C.

Q: What is the significance of the TO-220-3 Full Pack with isolated tab package?

A: The TO-220-3 Full Pack with isolated tab (ITO-220AB) is a through-hole package with three leads and an isolated mounting tab. This configuration allows the diode array to be mounted on a printed circuit board with thermal management through the isolated tab without electrical connection to the board ground plane. All substitute parts maintain this identical package specification, ensuring mechanical and thermal compatibility.

Q: How do reverse leakage currents compare among the substitute parts?

A: Reverse leakage current at 80 V varies among substitutes: VFT1080C-E3/4W exhibits 400 µA, TSF20U80C and VFT2080C-E3/4W both exhibit 600 µA, and VFT3080C-E3/4W and VFT3080C-M3/4W both exhibit 700 µA. Higher current-rated devices typically exhibit slightly higher leakage current. Selection should be based on circuit requirements and thermal management considerations.

Q: What is the operating temperature range for all parts?

A: All parts, including TSF20U80C and all substitute parts, operate across a junction temperature range of -55°C to 150°C, providing identical thermal operating specifications.

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