TSF40L150C Equivalent & Substitute Parts

Part Overview

The TSF40L150C is a Schottky diode array manufactured by Taiwan Semiconductor Corporation, configured as a 1 Pair Common Cathode with 150 V reverse voltage rating and 20 A average rectified current per diode. The device is packaged in TO-220-3 Full Pack with isolated tab and is classified as Active product status with RoHS3 compliance. Equivalent and substitute parts are identified based on matching electrical specifications, package configuration, and thermal operating range to ensure functional interchangeability in circuit applications.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	150 V
Current - Average Rectified (Io) (per Diode)	20 A
Voltage - Forward (Vf) (Max) @ If	960 mV @ 20 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
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

Substitute Part Grouping Explanation

Substitute parts for the TSF40L150C are grouped based on the following critical parameters that determine functional interchangeability:

Primary Matching Criteria:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 150 V
Package / Case: TO-220-3 Full Pack, Isolated Tab
Supplier Device Package: ITO-220AB
Mounting Type: Through Hole
Operating Temperature - Junction: -55°C ~ 150°C
Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)

Current Rating Consideration: Substitute parts are further categorized by Current - Average Rectified (Io) per diode. Parts with 20 A rating provide direct equivalence. Parts with lower current ratings (5 A, 10 A, 15 A) are suitable for applications with reduced current requirements but cannot be used in circuits demanding the full 20 A specification.

Forward Voltage Variation: Forward voltage specifications vary among manufacturers and current ratings. The TSF40L150C specifies 960 mV @ 20 A. Substitute parts with different forward voltage characteristics remain functionally compatible within the same package and configuration, as forward voltage variation is inherent to Schottky diode technology and manufacturing processes.

Parameter Comparison

Part Number	Manufacturer	Io (per Diode)	Vr (Max)	Vf (Max) @ If	Reverse Leakage @ Vr	Package	Product Status
TSF40L150C	Taiwan Semiconductor Corporation	20 A	150 V	960 mV @ 20 A	100 µA @ 150 V	TO-220-3 Full Pack, Isolated Tab	Active
STF30150C	SMC Diode Solutions	Not specified	150 V	1.36 V @ 15 A	200 µA @ 150 V	TO-220-3 Full Pack, Isolated Tab	Active
STF40150C	SMC Diode Solutions	Not specified	150 V	1.43 V @ 20 A	250 µA @ 150 V	TO-220-3 Full Pack, Isolated Tab	Active
VF10150C-E3/4W	Vishay General Semiconductor - Diodes Division	5 A	150 V	1.41 V @ 5 A	100 µA @ 150 V	TO-220-3 Full Pack, Isolated Tab	Active
VF20150C-E3/4W	Vishay General Semiconductor - Diodes Division	10 A	150 V	1.2 V @ 10 A	150 µA @ 150 V	TO-220-3 Full Pack, Isolated Tab	Active
VF20150C-M3/4W	Vishay General Semiconductor - Diodes Division	10 A	150 V	1.2 V @ 10 A	150 µA @ 150 V	TO-220-3 Full Pack, Isolated Tab	Active
VF30150C-E3/4W	Vishay General Semiconductor - Diodes Division	15 A	150 V	1.36 V @ 15 A	200 µA @ 150 V	TO-220-3 Full Pack, Isolated Tab	Active
VF40150C-E3/4W	Vishay General Semiconductor - Diodes Division	20 A	150 V	1.43 V @ 20 A	250 µA @ 150 V	TO-220-3 Full Pack, Isolated Tab	Active
VF40150C-M3/4W	Vishay General Semiconductor - Diodes Division	20 A	150 V	1.43 V @ 20 A	250 µA @ 150 V	TO-220-3 Full Pack, Isolated Tab	Active

Engineering Selection Recommendations

Direct Equivalents (20 A Rating): The VF40150C-E3/4W and VF40150C-M3/4W from Vishay General Semiconductor - Diodes Division provide direct electrical equivalence to the TSF40L150C. Both parts maintain the 20 A current rating, 150 V reverse voltage, TO-220-3 Full Pack isolated tab package, and identical operating temperature range. Both are Active product status with RoHS3 compliance and REACH Unaffected designation. The primary difference is forward voltage specification at 1.43 V @ 20 A compared to the TSF40L150C at 960 mV @ 20 A, which reflects manufacturing process variation inherent to Schottky diode technology.

Reduced Current Alternatives: The VF30150C-E3/4W (15 A), VF20150C-E3/4W and VF20150C-M3/4W (10 A), and VF10150C-E3/4W (5 A) are suitable substitutes only for applications where the circuit current requirement does not exceed the specified Io rating of each part. All maintain the 150 V reverse voltage, TO-220-3 package configuration, and operating temperature range. These parts are Active status with RoHS3 compliance and REACH Unaffected designation.

SMC Diode Solutions Options: The STF40150C and STF30150C from SMC Diode Solutions are Active products with RoHS3 compliance. The STF40150C matches the 150 V reverse voltage and TO-220-3 package but does not specify current rating. The STF30150C similarly lacks current rating specification. Both parts show REACH Affected status, distinguishing them from the REACH Unaffected designation of the primary part and Vishay alternatives.

Compliance Considerations: All substitute parts listed maintain RoHS3 compliance and operate within the -55°C to 150°C junction temperature range. The TSF40L150C and Vishay parts carry REACH Unaffected status, while SMC Diode Solutions parts are REACH Affected. Selection should account for supply chain compliance requirements specific to the application region.

Frequently Asked Questions (FAQ)

Q: Can VF40150C-E3/4W directly replace TSF40L150C in all applications?

A: Yes, the VF40150C-E3/4W provides direct electrical and mechanical compatibility. Both parts share identical diode configuration (1 Pair Common Cathode), 150 V reverse voltage rating, 20 A current rating, TO-220-3 Full Pack isolated tab package, and -55°C to 150°C operating temperature range. Forward voltage differs (1.43 V @ 20 A versus 960 mV @ 20 A), which is characteristic variation among Schottky diode manufacturers and does not affect functional interchangeability.

Q: What is the difference between VF40150C-E3/4W and VF40150C-M3/4W?

A: Both parts are electrically identical with 20 A current rating, 150 V reverse voltage, and identical forward voltage specification of 1.43 V @ 20 A. The designation suffix (-E3/4W versus -M3/4W) indicates different manufacturing or packaging variants from Vishay. Both are suitable direct substitutes for the TSF40L150C.

Q: Can I use VF30150C-E3/4W (15 A) instead of TSF40L150C (20 A)?

A: The VF30150C-E3/4W is suitable only if the circuit current requirement does not exceed 15 A per diode. The part maintains all other electrical specifications: 150 V reverse voltage, Schottky technology, TO-220-3 package, and -55°C to 150°C operating temperature. Using a lower-rated part in a 20 A application will result in device failure.

Q: Are there any compliance differences between substitute options?

A: The TSF40L150C and all Vishay parts (VF series) carry REACH Unaffected status. The SMC Diode Solutions parts (STF series) are REACH Affected. Selection should consider regional compliance requirements. All parts are RoHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited).

Q: Why does forward voltage vary among the substitute parts?

A: Forward voltage variation is inherent to Schottky diode manufacturing and reflects differences in semiconductor process technology, doping profiles, and junction design among manufacturers. The TSF40L150C specifies 960 mV @ 20 A while Vishay VF40150C parts specify 1.43 V @ 20 A. Both values are within acceptable Schottky diode performance parameters and do not affect functional interchangeability in standard rectification applications.

Q: Is the TO-220-3 Full Pack isolated tab package identical across all listed parts?

A: Yes, all substitute parts use the same TO-220-3 Full Pack with isolated tab package configuration (Supplier Device Package ITO-220AB). This ensures mechanical compatibility for through-hole mounting on printed circuit boards without modification to existing footprints or thermal management designs.

Q: What is the significance of reverse leakage current differences?

A: Reverse leakage current varies among parts: TSF40L150C specifies 100 µA @ 150 V, while VF40150C parts specify 250 µA @ 150 V. These differences reflect manufacturing process variation and do not affect functional compatibility in standard rectification circuits. Selection should account for leakage current only in applications with specific low-leakage requirements.

Q: Can I mix different substitute parts in the same circuit?

A: All listed substitute parts maintain identical diode configuration (1 Pair Common Cathode), reverse voltage (150 V), package (TO-220-3), and operating temperature range (-55°C to 150°C). Parts with different current ratings should not be mixed in parallel configurations where current sharing is required, as current distribution will be unequal due to forward voltage differences.

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