VT3045CHM3/4W Equivalent & Substitute Parts

Part Overview

The VT3045CHM3/4W is a Schottky diode array with 1 pair common cathode configuration, rated for 45 V DC reverse voltage and 15 A average rectified current per diode. Manufactured by Vishay General Semiconductor - Diodes Division, this component is packaged in TO-220-3 through-hole format and qualified to AEC-Q101 automotive standards.

The VT3045CHM3/4W is classified as obsolete. Equivalent and substitute parts are available from active product lines that maintain identical or superior electrical and mechanical specifications, enabling direct replacement in existing designs or new production applications.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	45 V
Current - Average Rectified (Io) (per Diode)	15 A
Voltage - Forward (Vf) (Max) @ If	570 mV @ 15 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Operating Temperature - Junction	-40°C ~ 150°C
Grade	Automotive
Qualification	AEC-Q101
Mounting Type	Through Hole
Package / Case	TO-220-3
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the VT3045CHM3/4W is determined by the following critical parameters:

Electrical Equivalence Requirements:

Diode configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 45 V
Current - Average Rectified (Io) (per Diode): 15 A
Voltage - Forward (Vf) (Max) @ If: 570 mV @ 15 A
Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)

Mechanical Compatibility Requirements:

Mounting Type: Through Hole
Package / Case: TO-220-3 (for direct pin-compatible replacement)

Compliance Requirements:

Grade: Automotive
Qualification: AEC-Q101
RoHS Status: ROHS3 Compliant

Substitute parts are grouped into two categories:

Category 1: Direct Pin-Compatible Replacements (TO-220-3 Through Hole) Parts maintaining identical package and mounting type: VT3045C-M3/4W, VT3045CBP-M3/4W, VT3060C-E3/4W, STPS3045CT

Category 2: Functional Equivalent with Different Package (Surface Mount) Parts with identical electrical specifications but alternative mounting technology: V30D45CHM3_A/I (TO-263-3 surface mount)

Category 3: Functional Equivalent with Different Package (Through Hole Alternative) Parts with identical electrical specifications but alternative through-hole package: STPS3045CW (TO-247-3)

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	Package / Case	Mounting Type	Product Status	AEC-Q101
VT3045CHM3/4W	Vishay	45 V	15 A	570 mV @ 15 A	TO-220-3	Through Hole	Obsolete	Yes
V30D45CHM3_A/I	Vishay	45 V	15 A	570 mV @ 15 A	TO-263-3, D2PAK	Surface Mount	Active	Yes
VT3045C-M3/4W	Vishay	45 V	15 A	570 mV @ 15 A	TO-220-3	Through Hole	Active	Yes
VT3045CBP-M3/4W	Vishay	45 V	15 A	570 mV @ 15 A	TO-220-3	Through Hole	Active	Yes
VT3060C-E3/4W	Vishay	45 V	15 A	570 mV @ 15 A	TO-220-3	Through Hole	Active	Yes
STPS3045CT	STMicroelectronics	45 V	15 A	570 mV @ 15 A	TO-220-3	Through Hole	Active	Yes
STPS3045CW	STMicroelectronics	45 V	15 A	570 mV @ 15 A	TO-247-3	Through Hole	Active	Yes

Engineering Selection Recommendations

For Direct Replacement in Existing Designs:

VT3045C-M3/4W and VT3045CBP-M3/4W are active Vishay products maintaining identical TO-220-3 through-hole packaging and all electrical specifications of the obsolete VT3045CHM3/4W. Both parts are ROHS3 compliant and AEC-Q101 qualified. VT3045C-M3/4W is available in tube packaging with 1700 units in stock. VT3045CBP-M3/4W is part of the TMBS® series with 3732 units in stock and supports maximum junction temperature of 200°C.

STPS3045CT from STMicroelectronics is an active alternative maintaining identical electrical specifications and TO-220-3 through-hole packaging. This part is ROHS3 compliant, AEC-Q101 qualified, and has the highest inventory availability at 38,369 units. The reverse leakage current specification is 200 µA @ 45 V, compared to 2 mA @ 45 V for the Vishay variants.

VT3060C-E3/4W is an active Vishay product with identical electrical and mechanical specifications, available in tube packaging with 2384 units in stock.

For New Designs with Surface Mount Requirements:

V30D45CHM3_A/I is an active Vishay product providing functional equivalence with surface mount TO-263-3 (D2PAK) packaging. This part maintains identical electrical specifications and is ROHS3 compliant and AEC-Q101 qualified. Selection of this part requires PCB redesign for surface mount assembly.

For Alternative Through-Hole Package:

STPS3045CW from STMicroelectronics is an active product with identical electrical specifications packaged in TO-247-3 through-hole format. This part is ROHS3 compliant and AEC-Q101 qualified. Selection of this part requires PCB footprint modification to accommodate the larger TO-247-3 package.

Frequently Asked Questions (FAQ)

Q: Can VT3045C-M3/4W directly replace VT3045CHM3/4W without PCB modification?

A: Yes. VT3045C-M3/4W maintains identical TO-220-3 through-hole packaging, pin configuration, and all electrical specifications. No PCB modification is required for direct substitution.

Q: What is the difference between VT3045C-M3/4W and VT3045CBP-M3/4W?

A: Both parts maintain identical electrical specifications and TO-220-3 packaging. VT3045CBP-M3/4W is part of the TMBS® series and supports maximum junction temperature of 200°C, compared to -40°C ~ 150°C for VT3045C-M3/4W. Selection depends on thermal operating requirements.

Q: Is STPS3045CT from STMicroelectronics a suitable replacement?

A: Yes. STPS3045CT maintains identical electrical specifications, TO-220-3 through-hole packaging, and AEC-Q101 qualification. The reverse leakage current is 200 µA @ 45 V, which is lower than the 2 mA @ 45 V specification of the Vishay variants. This represents improved performance characteristics.

Q: Can V30D45CHM3_A/I be used as a substitute?

A: V30D45CHM3_A/I provides electrical equivalence with identical 45 V, 15 A specifications and AEC-Q101 qualification. However, this part uses surface mount TO-263-3 (D2PAK) packaging instead of through-hole TO-220-3. Substitution requires PCB redesign and assembly process modification.

Q: What is the difference between STPS3045CT and STPS3045CW?

A: Both parts are from STMicroelectronics with identical electrical specifications and AEC-Q101 qualification. STPS3045CT uses TO-220-3 through-hole packaging, while STPS3045CW uses TO-247-3 through-hole packaging. The TO-247-3 package is larger and requires different PCB footprint design.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance status identical to the original VT3045CHM3/4W.

Q: Why is the VT3045CHM3/4W classified as obsolete?

A: The VT3045CHM3/4W is obsolete, but active equivalent products are available from both Vishay and STMicroelectronics. These active alternatives maintain identical electrical and mechanical specifications with improved availability and support.

Q: Which substitute part has the highest inventory availability?

A: STPS3045CT from STMicroelectronics has the highest inventory availability at 38,369 units in stock.

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