TSF20U100C Equivalent & Substitute Parts

Part Overview

The TSF20U100C is a Schottky diode array manufactured by Taiwan Semiconductor Corporation, configured as a 1 Pair Common Cathode with 100 V reverse voltage rating and 10A average rectified current per diode. The device is packaged in TO-220-3 Full Pack with isolated tab for through-hole mounting applications.

The TSF20U100C carries a "Not For New Designs" product status, indicating it is obsolete or being phased out. This necessitates identification of equivalent and substitute components that maintain electrical and mechanical compatibility with existing designs or provide functional alternatives for new implementations.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io) (per Diode)	10	A
Voltage - Forward (Vf) (Max) @ If	790 mV @ 10 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	500	µA @ 100 V
Operating Temperature - Junction	-55 to 150	°C
Mounting Type	Through Hole	—
Package / Case	TO-220-3 Full Pack, Isolated Tab	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the TSF20U100C is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 100 V
Current - Average Rectified (Io) (per Diode): 10 A
Mounting Type: Through Hole
Package / Case: TO-220-3 Full Pack, Isolated Tab

Secondary Compatibility Parameters:

Voltage - Forward (Vf) (Max) @ If: Must not exceed 790 mV @ 10 A by more than acceptable circuit margin
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Operating Temperature - Junction: Must encompass or exceed -55°C to 150°C range
RoHS Status: ROHS3 Compliant

Substitute parts are grouped into two categories:

Category 1: Direct Electrical and Mechanical Equivalents Parts that match all primary substitution criteria and maintain identical or superior performance characteristics. These parts are pin-compatible and functionally interchangeable without circuit modification.

Category 2: Functional Alternatives Parts that satisfy primary substitution criteria but exhibit variations in secondary parameters such as forward voltage, reverse leakage current, or operating temperature range. These parts require circuit validation to confirm performance acceptability.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [A]	Vf (Max) @ If [mV]	Reverse Leakage @ Vr [µA]	Tj (Min-Max) [°C]	Package	Product Status
TSF20U100C	Taiwan Semiconductor Corporation	100	10	790 @ 10 A	500 @ 100 V	-55 to 150	TO-220-3 Full Pack, Isolated Tab	Not For New Designs
MBRF20100CT-E3/4W	Vishay General Semiconductor - Diodes Division	100	10	800 @ 10 A	100 @ 100 V	-65 to 150	TO-220-3 Full Pack, Isolated Tab	Active
MBRF20H100CT-E3/45	Vishay General Semiconductor - Diodes Division	100	10	770 @ 10 A	4.5 @ 100 V	-65 to 175	TO-220-3 Full Pack, Isolated Tab	Active
STF20100C	SMC Diode Solutions	100	—	750 @ 10 A	300 @ 100 V	-55 to 150	TO-220-3 Full Pack, Isolated Tab	Active
VF20100R-E3/4W	Vishay General Semiconductor - Diodes Division	100	10	900 @ 10 A	150 @ 100 V	-40 to 150	TO-220-3 Full Pack, Isolated Tab	Active
MBRF10100CT-E3/4W	Vishay General Semiconductor - Diodes Division	100	5	850 @ 5 A	100 @ 100 V	-65 to 150	TO-220-3 Full Pack, Isolated Tab	Active
MBRF30H100CT-E3/45	Vishay General Semiconductor - Diodes Division	100	15	820 @ 15 A	5 @ 100 V	-65 to 175	TO-220-3 Full Pack, Isolated Tab	Active
VF30100C-E3/4W	Vishay General Semiconductor - Diodes Division	100	15	800 @ 15 A	500 @ 100 V	-40 to 150	TO-220-3 Full Pack, Isolated Tab	Active
VF40100C-E3/4W	Vishay General Semiconductor - Diodes Division	100	20	730 @ 20 A	1000 @ 100 V	—	TO-220-3 Full Pack, Isolated Tab	Active

Engineering Selection Recommendations

Direct Equivalent (Category 1):

The MBRF20H100CT-E3/45 (Vishay General Semiconductor - Diodes Division) is the primary recommended substitute. This part maintains identical electrical specifications for reverse voltage (100 V) and average rectified current (10 A) per diode, with superior performance characteristics including lower forward voltage (770 mV vs. 790 mV @ 10 A), significantly reduced reverse leakage current (4.5 µA vs. 500 µA @ 100 V), and extended operating temperature range (-65°C to 175°C vs. -55°C to 150°C). The part is Active status and ROHS3 compliant. Pin-for-pin compatibility is maintained with identical TO-220-3 Full Pack, Isolated Tab packaging.

The MBRF20100CT-E3/4W (Vishay General Semiconductor - Diodes Division) provides an alternative direct equivalent with identical current and voltage ratings. Forward voltage is marginally higher (800 mV vs. 790 mV @ 10 A), and reverse leakage is significantly lower (100 µA vs. 500 µA @ 100 V). Operating temperature range is -65°C to 150°C. This part is Active status and ROHS3 compliant.

Functional Alternatives (Category 2):

The STF20100C (SMC Diode Solutions) is functionally compatible with identical reverse voltage (100 V) and forward voltage characteristics (750 mV @ 10 A, superior to the main part). Reverse leakage current is 300 µA @ 100 V. Operating temperature range matches the main part (-55°C to 150°C). This part is Active status and ROHS3 compliant. Current rating per diode is not specified in available data.

The VF20100R-E3/4W (Vishay General Semiconductor - Diodes Division) maintains identical reverse voltage (100 V) and current rating (10 A). Forward voltage is elevated at 900 mV @ 10 A, representing a 110 mV increase over the main part. Reverse leakage is 150 µA @ 100 V. Operating temperature range is -40°C to 150°C, which does not extend to the lower temperature limit of the main part. This part is Active status and ROHS3 compliant. Circuit validation is required to confirm forward voltage performance acceptability.

Higher Current Alternatives:

The MBRF30H100CT-E3/45 and VF30100C-E3/4W provide 15 A per diode capability, suitable for applications requiring higher current capacity than the 10 A rating of the main part. Both maintain 100 V reverse voltage rating and are Active status with ROHS3 compliance.

The VF40100C-E3/4W provides 20 A per diode capability with superior forward voltage (730 mV @ 20 A). This part is suitable for high-current applications but requires circuit validation due to missing operating temperature range specification.

Lower Current Alternative:

The MBRF10100CT-E3/4W provides 5 A per diode capability and is suitable only for applications with reduced current requirements. This part is not recommended as a substitute for the 10 A rated TSF20U100C in designs requiring full 10 A operation.

Frequently Asked Questions (FAQ)

Q: Can MBRF20H100CT-E3/45 be used as a direct replacement for TSF20U100C without circuit modification?

A: Yes. The MBRF20H100CT-E3/45 maintains identical pin configuration (TO-220-3 Full Pack, Isolated Tab), diode configuration (1 Pair Common Cathode), reverse voltage rating (100 V), and average rectified current (10 A per diode). Superior performance characteristics including lower forward voltage and reverse leakage current provide enhanced reliability. No circuit modification is required.

Q: What is the difference between MBRF20100CT-E3/4W and MBRF20H100CT-E3/45?

A: Both parts maintain identical electrical ratings (100 V reverse voltage, 10 A per diode). The MBRF20H100CT-E3/45 exhibits superior performance with lower forward voltage (770 mV vs. 800 mV @ 10 A), significantly lower reverse leakage current (4.5 µA vs. 100 µA @ 100 V), and extended operating temperature range (-65°C to 175°C vs. -65°C to 150°C). Selection depends on application thermal requirements and leakage current sensitivity.

Q: Why is VF20100R-E3/4W not recommended as a primary substitute?

A: While VF20100R-E3/4W maintains identical reverse voltage (100 V) and current rating (10 A), the forward voltage is elevated at 900 mV @ 10 A compared to 790 mV for the TSF20U100C. This 110 mV increase may impact circuit performance, particularly in applications sensitive to forward voltage drop. Additionally, the operating temperature range (-40°C to 150°C) does not extend to the lower temperature limit (-55°C) of the main part. Circuit validation is required before implementation.

Q: Can MBRF30H100CT-E3/45 or VF30100C-E3/4W be used in place of TSF20U100C?

A: These parts are physically and electrically compatible from a package and voltage perspective (TO-220-3 Full Pack, 100 V reverse voltage, 1 Pair Common Cathode configuration). However, they are rated for 15 A per diode rather than 10 A. These parts are suitable for applications where higher current capacity is beneficial or required. No circuit modification is necessary for pin compatibility, but thermal and current distribution characteristics should be verified for the specific application.

Q: What is the significance of the "Not For New Designs" status of TSF20U100C?

A: This status indicates the part is obsolete or being phased out by the manufacturer. New designs should not incorporate this part number. Active status alternatives such as MBRF20H100CT-E3/45, MBRF20100CT-E3/4W, or STF20100C should be selected for new implementations. Existing designs using TSF20U100C may continue operation with available inventory, but long-term supply cannot be guaranteed.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed in this reference are ROHS3 compliant, matching the compliance status of the main part TSF20U100C. This ensures regulatory compatibility for applications requiring ROHS3 certification.

Q: What is the impact of reverse leakage current differences between substitute parts?

A: Reverse leakage current affects power dissipation and circuit performance at elevated temperatures. The TSF20U100C exhibits 500 µA @ 100 V reverse leakage. MBRF20H100CT-E3/45 provides significantly lower leakage at 4.5 µA @ 100 V, reducing power loss and heat generation. VF20100R-E3/4W exhibits 150 µA @ 100 V leakage. Applications sensitive to reverse leakage current or operating at elevated temperatures benefit from parts with lower leakage specifications.

Q: Can STF20100C be used as a substitute if current rating is not specified?

A: STF20100C maintains compatible electrical specifications (100 V reverse voltage, TO-220-3 Full Pack, Isolated Tab, 1 Pair Common Cathode configuration) and exhibits superior forward voltage performance (750 mV @ 10 A vs. 790 mV). However, the average rectified current per diode is not specified in available data. Before implementation, the manufacturer datasheet must be consulted to confirm 10 A current rating capability. If confirmed, this part is suitable for substitution.

Q: What packaging considerations apply to all substitute parts?

A: All substitute parts listed maintain identical through-hole packaging: TO-220-3 Full Pack with Isolated Tab. This ensures mechanical compatibility with existing printed circuit board layouts and mounting hardware. No PCB redesign or mechanical modification is required for any of the recommended substitutes.

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