DSB30C45HB Equivalent & Substitute Parts

Part Overview

The DSB30C45HB is an IXYS Schottky diode array in a 1 Pair Common Cathode configuration rated for 45 V DC reverse voltage and 15 A average rectified current per diode. This component is packaged in a Through Hole TO-247-3 case and is classified as Active product status. The device operates across a junction temperature range of -55°C to 175°C and exhibits fast recovery characteristics with a maximum forward voltage of 580 mV at 15 A.

Equivalent and substitute parts are identified when alternative manufacturers offer diode arrays with matching or superior electrical specifications within the same package category, enabling procurement flexibility and supply chain continuity.

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	580 mV @ 15 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Mounting Type	Through Hole
Package / Case	TO-247-3
Operating Temperature - Junction	-55°C ~ 175°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the DSB30C45HB is determined by the following critical parameters:

Mandatory Matching Criteria:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 45 V
Mounting Type: Through Hole
Package / Case: TO-247-3

Allowable Variation Criteria:

Current - Average Rectified (Io): Equal to or greater than 15 A per diode
Voltage - Forward (Vf): Equal to or less than 580 mV at rated current
Operating Temperature - Junction: Minimum -55°C and maximum 175°C or higher
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Substitute parts identified in this reference meet all mandatory matching criteria and operate within allowable variation parameters, ensuring functional compatibility in applications designed for the DSB30C45HB.

Parameter Comparison

Parameter	DSB30C45HB (IXYS)	STPS3045CW (STMicroelectronics)	STPS4045CWY (STMicroelectronics)
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	45 V	45 V	45 V
Current - Average Rectified (Io) (per Diode)	15 A	15 A	20 A
Voltage - Forward (Vf) (Max) @ If	580 mV @ 15 A	570 mV @ 15 A	760 mV @ 20 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	10 mA @ 45 V	200 µA @ 45 V	200 µA @ 45 V
Operating Temperature - Junction	-55°C ~ 175°C	200°C (Max)	-40°C ~ 175°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	TO-247-3	TO-247-3	TO-247-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

STPS3045CW (STMicroelectronics)

The STPS3045CW is a direct electrical equivalent to the DSB30C45HB. Both devices share identical voltage ratings (45 V), current ratings (15 A per diode), and package configuration (TO-247-3). The STPS3045CW exhibits a lower forward voltage drop (570 mV versus 580 mV at 15 A), resulting in reduced power dissipation. Both parts are ROHS3 Compliant and maintain fast recovery characteristics. The STPS3045CW is suitable for applications requiring direct replacement of the DSB30C45HB with equivalent performance characteristics.

STPS4045CWY (STMicroelectronics)

The STPS4045CWY is a higher-current variant rated for 20 A per diode, compared to the 15 A rating of the DSB30C45HB. This part maintains the same 45 V reverse voltage rating and TO-247-3 package. The STPS4045CWY is qualified to AEC-Q101 automotive standards and carries a Grade designation for automotive applications. This device is suitable for applications where the DSB30C45HB is used but higher current capacity is required. The STPS4045CWY is ROHS3 Compliant and maintains fast recovery performance. Selection of this part should be based on application current requirements exceeding 15 A per diode.

Frequently Asked Questions (FAQ)

Q: Can the STPS3045CW directly replace the DSB30C45HB in existing designs?

A: Yes. The STPS3045CW matches the DSB30C45HB in voltage rating (45 V), current rating (15 A per diode), diode configuration (1 Pair Common Cathode), and package (TO-247-3). The lower forward voltage of the STPS3045CW (570 mV versus 580 mV) represents an improvement in thermal performance.

Q: What is the primary difference between the STPS3045CW and STPS4045CWY?

A: The STPS4045CWY is rated for 20 A per diode, while the STPS3045CW is rated for 15 A per diode. Both maintain 45 V reverse voltage ratings and TO-247-3 packaging. The STPS4045CWY includes automotive qualification (AEC-Q101).

Q: Are all substitute parts ROHS3 Compliant?

A: Yes. The DSB30C45HB, STPS3045CW, and STPS4045CWY are all ROHS3 Compliant.

Q: Can the STPS4045CWY be used in applications designed for 15 A operation?

A: Yes. The STPS4045CWY is rated for 20 A per diode and operates within the same voltage parameters (45 V) as the DSB30C45HB. Applications designed for 15 A operation will function with the STPS4045CWY, which provides additional current margin.

Q: What is the operating temperature range for each part?

A: The DSB30C45HB operates from -55°C to 175°C junction temperature. The STPS3045CW has a maximum junction temperature of 200°C. The STPS4045CWY operates from -40°C to 175°C junction temperature.

Q: Are the substitute parts available in the same packaging format?

A: Yes. All three parts are packaged in TO-247-3 Through Hole configuration and are supplied in Tube packaging.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message