STPS3045CPIRG Equivalent & Substitute Parts

Part Overview

The STPS3045CPIRG is a Schottky diode array manufactured by STMicroelectronics, configured as 1 pair common cathode with 45 V reverse voltage rating and 15 A average rectified current per diode. The device is packaged in TOP-3 Insulated through-hole configuration and is classified as obsolete product status.

Due to obsolescence, equivalent substitute parts are necessary for ongoing design support, production continuity, and component sourcing. Alternative Schottky diode arrays with matching or superior electrical characteristics and active product status are available from STMicroelectronics and IXYS manufacturers.

Key Parameters

Parameter	Value	Unit
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 ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	200	µA @ 45 V
Operating Temperature - Junction (Max)	200	°C
Mounting Type	Through Hole	—
Package / Case	TOP-3 Insulated	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the STPS3045CPIRG is determined by the following critical parameters:

Mandatory Matching Parameters:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 45 V
Current - Average Rectified (Io) (per Diode): 15 A minimum
Mounting Type: Through Hole
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Allowable Variation Parameters:

Voltage - Forward (Vf): Substitute parts with equal or lower forward voltage are acceptable
Current - Reverse Leakage @ Vr: Substitute parts with equal or lower reverse leakage are acceptable
Operating Temperature - Junction: Substitute parts with equal or higher maximum junction temperature are acceptable
Package / Case: TO-247-3 is functionally equivalent to TOP-3 Insulated for through-hole applications with pin compatibility verification

Substitute parts are grouped by current rating capability. Parts rated for 15 A, 30 A, or 40 A average rectified current are presented, with higher current ratings providing design margin for the 15 A application requirement.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [A]	Vf (Max) [mV]	Ir @ Vr [µA]	Tj (Max) [°C]	Package	Product Status
STPS3045CPIRG	STMicroelectronics	45	15	570 @ 15 A	200 @ 45 V	200	TOP-3 Insulated	Obsolete
STPS3045CW	STMicroelectronics	45	15	570 @ 15 A	200 @ 45 V	200	TO-247-3	Active
DSA30C45HB	IXYS	45	15	740 @ 15 A	250 @ 45 V	175	TO-247-3	Active
DSB30C45HB	IXYS	45	15	580 @ 15 A	10000 @ 45 V	175	TO-247-3	Active
DSA60C45HB	IXYS	45	30	770 @ 30 A	450 @ 45 V	175	TO-247-3	Active
DSB60C45HB	IXYS	45	30	620 @ 30 A	10000 @ 45 V	150	TO-247-3	Active
DSA80C45HB	IXYS	45	40	780 @ 40 A	680 @ 45 V	175	TO-247-3	Active
DSB80C45HB	IXYS	45	40	620 @ 40 A	15000 @ 45 V	150	TO-247-3	Active
DSSK60-0045A	IXYS	45	30	690 @ 30 A	1000 @ 45 V	175	TO-247-3	Active
DSSK60-0045B	IXYS	45	30	500 @ 30 A	20000 @ 45 V	150	TO-247-3	Active
DSSK80-0045B	IXYS	45	40	510 @ 40 A	30000 @ 45 V	150	TO-247-3	Active

Engineering Selection Recommendations

Primary Recommendation: STPS3045CW

The STPS3045CW from STMicroelectronics is the direct functional equivalent to the STPS3045CPIRG. This part maintains identical electrical specifications including 45 V reverse voltage, 15 A average rectified current, and 570 mV forward voltage at 15 A. The STPS3045CW is active product status with full manufacturing support and is ROHS3 compliant. The primary difference is package format: TO-247-3 versus TOP-3 Insulated. Both are through-hole configurations with verified pin compatibility for standard PCB layouts.

Secondary Recommendations: IXYS DSB Series (DSB30C45HB, DSB60C45HB, DSB80C45HB)

The IXYS DSB series provides active product status alternatives with superior reverse leakage characteristics (10 mA to 15 mA at 45 V versus 200 µA to 680 µA for DSA series). DSB30C45HB matches the 15 A current requirement with forward voltage of 580 mV at 15 A, closely aligned with the original specification. DSB60C45HB and DSB80C45HB provide 30 A and 40 A ratings respectively, offering design margin for applications requiring higher current capacity. All DSB parts are ROHS3 compliant and packaged in TO-247-3 through-hole format.

Alternative Recommendations: IXYS DSA Series and DSSK Series

The IXYS DSA30C45HB provides 15 A current rating with active product status and ROHS3 compliance. The DSA60C45HB and DSA80C45HB offer 30 A and 40 A ratings. DSSK60-0045A and DSSK80-0045B provide 30 A and 40 A ratings with active product status. All alternatives maintain 45 V reverse voltage specification and fast recovery Schottky technology. Forward voltage and reverse leakage characteristics vary across the product line; selection depends on specific thermal and efficiency requirements of the application.

Compliance and Certification:

All recommended substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the original STPS3045CPIRG. Moisture sensitivity level is 1 (Unlimited) for all parts, indicating no special handling requirements during storage or assembly.

Frequently Asked Questions (FAQ)

Q: Can STPS3045CW directly replace STPS3045CPIRG in existing PCB designs?

A: STPS3045CW is electrically equivalent with identical specifications. Package format differs (TO-247-3 versus TOP-3 Insulated), but both are through-hole configurations. PCB footprint verification is required to confirm pin spacing and hole diameter compatibility with existing board layouts.

Q: What is the difference between DSA and DSB series from IXYS?

A: Both series maintain 45 V reverse voltage and Schottky technology. The primary difference is reverse leakage current: DSA series exhibits higher reverse leakage (250 µA to 680 µA at 45 V) while DSB series exhibits lower reverse leakage (10 mA to 15 mA at 45 V). DSB series also features lower forward voltage characteristics. Selection depends on application requirements for leakage current and thermal dissipation.

Q: Are higher current-rated parts (30 A, 40 A) suitable for 15 A applications?

A: Yes. Parts rated for 30 A or 40 A average rectified current satisfy the 15 A requirement of the original STPS3045CPIRG. Higher current ratings provide design margin and typically result in lower junction temperatures during operation due to improved thermal characteristics of larger die geometry.

Q: What is the significance of the TO-247-3 package format?

A: TO-247-3 is a standard through-hole package for power semiconductors, functionally equivalent to TOP-3 Insulated for circuit applications. Both formats provide three leads with electrical isolation. Pin spacing and hole diameter must be verified against PCB design specifications to ensure mechanical compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts listed in this document are ROHS3 compliant and REACH unaffected, matching the regulatory compliance of the original STPS3045CPIRG.

Q: What is the operating temperature range difference between substitute parts?

A: The original STPS3045CPIRG specifies maximum junction temperature of 200°C. IXYS DSA series parts specify -55°C to 175°C operating range. IXYS DSB and DSSK series specify -55°C to 150°C operating range. Application thermal design must account for these maximum junction temperature limits to ensure reliable operation.

Q: Can DSSK60-0045B and DSSK80-0045B be used interchangeably with DSA and DSB series?

A: DSSK series parts maintain 45 V reverse voltage and Schottky technology with active product status. DSSK60-0045B provides 30 A rating with 500 mV forward voltage at 30 A and 20 mA reverse leakage. DSSK80-0045B provides 40 A rating with 510 mV forward voltage at 40 A and 30 mA reverse leakage. Interchangeability depends on specific application requirements for forward voltage drop and reverse leakage characteristics.

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