TSF30L150C Equivalent & Substitute Parts

Part Overview

The TSF30L150C is a Schottky diode array manufactured by Taiwan Semiconductor Corporation, configured as a 1 Pair Common Cathode device rated for 150 V DC reverse voltage and 15 A average rectified current per diode. The component is packaged in a TO-220-3 Full Pack with isolated tab for through-hole mounting applications.

This part carries a "Not For New Designs" product status, indicating it is obsolete or being phased out. Equivalent and substitute parts are necessary for ongoing production support, maintenance applications, and design continuity where the TSF30L150C specifications remain functionally appropriate.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	150	V
Current - Average Rectified (Io) (per Diode)	15	A
Voltage - Forward (Vf) (Max) @ If	920 mV @ 15 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	100	µA @ 150 V
Operating Temperature - Junction	-55 to 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)	—

Substitute Part Grouping Explanation

Substitution of the TSF30L150C is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

Diode Configuration: 1 Pair Common Cathode (exact match required)
Voltage - DC Reverse (Vr) (Max): 150 V (exact match required)
Current - Average Rectified (Io) (per Diode): 15 A minimum (equal or greater acceptable)
Technology: Schottky (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: TO-220-3 Full Pack, Isolated Tab (exact match required)
Supplier Device Package: ITO-220AB (exact match required)

Secondary Compliance Criteria:

Operating Temperature - Junction: -55°C to 150°C (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)
Moisture Sensitivity Level (MSL): 1 (Unlimited) (exact match required)

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents (15 A Rating): Parts with identical 15 A current rating and common cathode configuration. These provide direct functional replacement with minimal circuit redesign consideration.

Category B - Higher Current Rated Alternatives (≥ 15 A): Parts rated for 20 A or higher current capacity. These are electrically compatible for applications where the TSF30L150C is used, as higher current ratings provide design margin and are backward compatible in circuits designed for 15 A operation.

Category C - Configuration Variant (Common Anode): The STF20150CR is a common anode configuration. This part is electrically distinct and requires circuit topology verification before substitution.

Parameter Comparison

Part Number	Manufacturer	Diode Configuration	Vr (Max) [V]	Io per Diode [A]	Vf (Max) @ If [mV]	Reverse Leakage @ Vr [µA]	Product Status	RoHS Status
TSF30L150C	Taiwan Semiconductor Corporation	1 Pair Common Cathode	150	15	920 @ 15 A	100 @ 150 V	Not For New Designs	ROHS3 Compliant
STF20150CR	SMC Diode Solutions	1 Pair Common Anode	150	—	1200 @ 10 A	150 @ 150 V	Active	ROHS3 Compliant
STF30150C	SMC Diode Solutions	1 Pair Common Cathode	150	—	1360 @ 15 A	200 @ 150 V	Active	ROHS3 Compliant
VF10150C-E3/4W	Vishay General Semiconductor - Diodes Division	1 Pair Common Cathode	150	5	1410 @ 5 A	100 @ 150 V	Active	ROHS3 Compliant
VF20150C-E3/4W	Vishay General Semiconductor - Diodes Division	1 Pair Common Cathode	150	10	1200 @ 10 A	150 @ 150 V	Active	ROHS3 Compliant
VF20150C-M3/4W	Vishay General Semiconductor - Diodes Division	1 Pair Common Cathode	150	10	1200 @ 10 A	150 @ 150 V	Active	ROHS3 Compliant
VF30150C-E3/4W	Vishay General Semiconductor - Diodes Division	1 Pair Common Cathode	150	15	1360 @ 15 A	200 @ 150 V	Active	ROHS3 Compliant
VF40150C-E3/4W	Vishay General Semiconductor - Diodes Division	1 Pair Common Cathode	150	20	1430 @ 20 A	250 @ 150 V	Active	ROHS3 Compliant
VF40150C-M3/4W	Vishay General Semiconductor - Diodes Division	1 Pair Common Cathode	150	20	1430 @ 20 A	250 @ 150 V	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: VF30150C-E3/4W

The VF30150C-E3/4W manufactured by Vishay General Semiconductor - Diodes Division is the optimal substitute for the TSF30L150C. This part provides:

Identical diode configuration (1 Pair Common Cathode)
Matching voltage rating (150 V DC reverse)
Equivalent current rating (15 A per diode)
Active product status with full manufacturing support
ROHS3 compliance and unlimited moisture sensitivity level
Identical package and mounting specifications (TO-220-3 Full Pack, Isolated Tab, ITO-220AB)
Identical operating temperature range (-55°C to 150°C)

Secondary Recommendation: STF30150C

The STF30150C manufactured by SMC Diode Solutions is an alternative substitute meeting all primary substitution criteria. This part is active and ROHS3 compliant. Selection between VF30150C-E3/4W and STF30150C depends on supplier availability and procurement lead times.

Higher Current Alternatives: VF40150C-E3/4W and VF40150C-M3/4W

These 20 A rated parts are electrically compatible for applications where the TSF30L150C is specified. The higher current rating provides additional design margin and is backward compatible in circuits designed for 15 A operation. These parts are active and ROHS3 compliant.

Not Recommended: VF10150C-E3/4W and VF20150C Series

The VF10150C-E3/4W (5 A) and VF20150C series (10 A) are rated below the TSF30L150C current specification and are not suitable substitutes for applications requiring 15 A operation.

Not Recommended: STF20150CR

The STF20150CR features a common anode configuration, which is electrically distinct from the TSF30L150C common cathode configuration. This part requires circuit topology verification and is not a direct substitute.

Frequently Asked Questions (FAQ)

Q: Can the VF30150C-E3/4W be used as a direct replacement for the TSF30L150C without circuit modification?

A: Yes. The VF30150C-E3/4W matches all critical electrical and mechanical parameters of the TSF30L150C, including diode configuration, voltage rating, current rating, package type, and operating temperature range. No circuit modification is required.

Q: What is the difference between VF30150C-E3/4W and VF30150C-M3/4W?

A: Both parts are identical in electrical specifications and package configuration. The difference is in the manufacturing or tape/reel designation indicated by the suffix. Both are acceptable substitutes for the TSF30L150C.

Q: Can I use the VF40150C-E3/4W (20 A) in place of the TSF30L150C (15 A)?

A: Yes. The VF40150C-E3/4W is electrically compatible and backward compatible. The higher current rating provides additional design margin. All other parameters match the TSF30L150C requirements.

Q: Why is the STF20150CR not recommended as a substitute?

A: The STF20150CR is configured as a 1 Pair Common Anode device, while the TSF30L150C is a 1 Pair Common Cathode device. These configurations are electrically distinct and require different circuit topologies. Substitution requires circuit redesign and verification.

Q: What is the significance of the "Not For New Designs" status on the TSF30L150C?

A: This status indicates the part is obsolete or being phased out by the manufacturer. Existing inventory may be available, but the manufacturer is not recommending this part for new circuit designs. Substitute parts with "Active" status are recommended for new designs and ongoing production.

Q: Are all substitute parts ROHS3 compliant like the TSF30L150C?

A: Yes. All recommended substitute parts listed in this document are ROHS3 compliant and have unlimited moisture sensitivity level (MSL 1), matching the TSF30L150C compliance profile.

Q: What is the difference between the E3/4W and M3/4W package designations?

A: Both designations refer to the same TO-220-3 Full Pack, Isolated Tab package (ITO-220AB). The suffix variation indicates different manufacturing or tape/reel configurations. Electrical and mechanical specifications are identical.

Q: Can I substitute the TSF30L150C with a lower current rated part like the VF20150C-E3/4W (10 A)?

A: No. The VF20150C-E3/4W is rated for 10 A per diode, which is below the TSF30L150C specification of 15 A. Using an undersized part may result in thermal stress, reduced reliability, or circuit failure. Use only parts rated for 15 A or higher.

Q: Is the forward voltage drop (Vf) difference between the TSF30L150C and substitute parts significant?

A: The TSF30L150C specifies 920 mV @ 15 A, while most substitute parts specify 1.2 to 1.43 V at their respective rated currents. This difference reflects different semiconductor technologies and manufacturing processes. For most applications, this variation is within acceptable design tolerance. Verify forward voltage drop specifications against circuit requirements if thermal or efficiency performance is critical.

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