DSA70C150HB Equivalent & Substitute Parts

Part Overview

The DSA70C150HB is an IXYS Schottky diode array featuring a 1 Pair Common Cathode configuration rated for 150 V DC reverse voltage and 35 A average rectified current per diode. The device is packaged in TO-247-3 through-hole format and is classified as Active product status with full RoHS3 compliance. Substitute parts are identified to address inventory availability, extended temperature operating ranges, or alternative manufacturer sourcing requirements while maintaining electrical and mechanical compatibility within the specified parameter envelope.

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)	35	A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 35 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Operating Temperature - Junction	-55 to 175	°C
Mounting Type	Through Hole	—
Package / Case	TO-247-3	—
RoHS Status	RoHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the DSA70C150HB is determined by strict adherence to the following electrical and mechanical parameters:

Mandatory Matching Parameters:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 150 V
Mounting Type: Through Hole
Package / Case: TO-247-3

Current Rating Consideration: Substitute parts are grouped by average rectified current (Io) per diode. The DSA70C150HB operates at 35 A. Substitute parts with equal or greater current ratings (40 A) provide direct functional equivalence. Parts with lower current ratings (15 A, 20 A, 30 A) are classified as similar but with reduced current capacity and are suitable only for applications requiring lower current specifications.

Forward Voltage (Vf) Tolerance: Forward voltage specifications vary across manufacturers and current ratings. All listed substitutes operate within the Schottky diode forward voltage envelope (840–920 mV range) and are electrically compatible.

Temperature Operating Range: The DSA70C150HB operates from -55°C to 175°C. Substitute parts from STMicroelectronics (STPS series) specify 175°C maximum junction temperature, providing equivalent thermal performance. The MBR80150WT from SMC Diode Solutions operates to 150°C maximum, representing a 25°C reduction in upper temperature limit.

Compliance and Certifications: All substitute parts maintain RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols.

Parameter Comparison

Parameter	DSA70C150HB (IXYS)	MBR80150WT (SMC)	STPS30150CW (STM)	STPS40150CW (STM)	STPS61150CW (STM)	STPS80150CW (STM)
Manufacturer	IXYS	SMC Diode Solutions	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	150 V	150 V	150 V	150 V	150 V	150 V
Current - Average Rectified (Io) (per Diode)	35 A	Not specified	15 A	20 A	30 A	40 A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 35 A	900 mV @ 40 A	920 mV @ 15 A	920 mV @ 20 A	840 mV @ 30 A	840 mV @ 40 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	680 µA @ 150 V	2 mA @ 150 V	6.5 µA @ 150 V	8 µA @ 150 V	20 µA @ 150 V	30 µA @ 150 V
Operating Temperature - Junction	-55 to 175°C	-55 to 150°C	Max 175°C	Max 175°C	Max 175°C	Max 175°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Equivalent (Equal or Greater Current Rating):

The STPS80150CW from STMicroelectronics is the primary direct equivalent to the DSA70C150HB. Both devices are rated for 40 A average rectified current, matching or exceeding the 35 A specification of the main part. The STPS80150CW maintains identical voltage ratings (150 V reverse), identical package format (TO-247-3), identical configuration (1 Pair Common Cathode), and identical temperature operating range (175°C maximum). RoHS3 compliance and MSL 1 rating are maintained. This part is suitable for direct substitution in applications requiring the full 35 A current capacity.

The MBR80150WT from SMC Diode Solutions provides an alternative direct equivalent with 40 A current capability. However, the maximum junction temperature is specified at 150°C, representing a 25°C reduction compared to the DSA70C150HB. This part is suitable for applications where the reduced upper temperature limit does not conflict with system thermal requirements. REACH status differs (REACH Affected versus REACH Unaffected), which may impact supply chain compliance documentation.

Reduced Current Rating Alternatives:

The STPS61150CW (30 A), STPS40150CW (20 A), and STPS30150CW (15 A) from STMicroelectronics are classified as similar parts with progressively lower current ratings. These devices are electrically and mechanically compatible with the DSA70C150HB but are suitable only for applications where the reduced current specification meets system requirements. All three maintain 175°C maximum junction temperature and full RoHS3 compliance.

Product Status and Availability:

All listed substitute parts maintain Active product status, ensuring continued availability and manufacturer support. Inventory levels vary across suppliers and part numbers, with STPS61150CW showing the highest stock level (5876 Pcs) among STMicroelectronics offerings.

Frequently Asked Questions (FAQ)

Q: Can the STPS80150CW directly replace the DSA70C150HB in all applications?

A: The STPS80150CW is electrically and mechanically compatible with the DSA70C150HB. Both devices share identical voltage ratings (150 V), identical package format (TO-247-3), identical diode configuration (1 Pair Common Cathode), and identical maximum junction temperature (175°C). Direct substitution is supported for applications operating within these parameter specifications.

Q: What is the significance of the current rating difference between the DSA70C150HB (35 A) and STPS80150CW (40 A)?

A: The DSA70C150HB is rated for 35 A average rectified current per diode, while the STPS80150CW is rated for 40 A. The higher rating of the STPS80150CW provides additional current capacity margin. For applications requiring exactly 35 A or less, the STPS80150CW operates within its specified limits. The STPS80150CW is not suitable for applications requiring current above 40 A.

Q: Why does the MBR80150WT have a lower maximum junction temperature (150°C) compared to the DSA70C150HB (175°C)?

A: The MBR80150WT from SMC Diode Solutions specifies a maximum junction temperature of 150°C, while the DSA70C150HB and STMicroelectronics STPS series devices specify 175°C. This represents a 25°C difference in thermal rating. Selection of the MBR80150WT is appropriate only for applications where the system thermal environment does not exceed 150°C at the device junction.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts maintain RoHS3 compliance status, matching the compliance profile of the DSA70C150HB. Moisture Sensitivity Level (MSL) is uniformly rated as 1 (Unlimited) across all parts, indicating no moisture sensitivity restrictions during storage or handling.

Q: What is the difference between the STPS30150CW, STPS40150CW, STPS61150CW, and STPS80150CW?

A: These four STMicroelectronics parts differ primarily in average rectified current rating: STPS30150CW (15 A), STPS40150CW (20 A), STPS61150CW (30 A), and STPS80150CW (40 A). All four maintain identical voltage ratings (150 V), identical package format (TO-247-3), identical configuration (1 Pair Common Cathode), and identical maximum junction temperature (175°C). Selection is determined by application current requirements. The STPS80150CW (40 A) is the closest match to the DSA70C150HB (35 A) in terms of current capacity.

Q: Can I use the STPS61150CW (30 A) as a substitute for the DSA70C150HB (35 A)?

A: The STPS61150CW is electrically and mechanically compatible with the DSA70C150HB in terms of voltage rating, package format, and configuration. However, the STPS61150CW is rated for 30 A average rectified current, which is 5 A below the DSA70C150HB specification. Use of the STPS61150CW is appropriate only for applications where the maximum required current does not exceed 30 A per diode.

Q: Is the TO-247-3 package format identical across all listed parts?

A: Yes, all listed substitute parts use the TO-247-3 through-hole package format, matching the DSA70C150HB. This ensures mechanical compatibility with existing printed circuit board layouts and thermal management solutions designed for the TO-247-3 form factor.

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

A: Reverse leakage current (Ir) varies across the listed parts, ranging from 6.5 µA (STPS30150CW) to 2 mA (MBR80150WT) at 150 V reverse voltage. The DSA70C150HB specifies 680 µA. Reverse leakage current affects power dissipation in reverse-biased conditions and heat generation. Applications sensitive to reverse leakage performance should evaluate the specific leakage characteristics of candidate substitute parts.

Q: Are there any REACH compliance differences between substitute parts?

A: The DSA70C150HB and all STMicroelectronics STPS series parts (STPS30150CW, STPS40150CW, STPS61150CW, STPS80150CW) are listed as REACH Unaffected. The MBR80150WT from SMC Diode Solutions is listed as REACH Affected. Organizations subject to REACH compliance requirements should confirm that the MBR80150WT meets their specific regulatory obligations before selection.

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