DSA30C45HB Equivalent & Substitute Parts

Part Overview

The DSA30C45HB is an IXYS Schottky diode array featuring a 1 Pair Common Cathode configuration rated for 45 V DC reverse voltage and 15 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 range requirements, or higher current capacity needs while maintaining core electrical and mechanical compatibility.

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	740 mV @ 15 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Operating Temperature - Junction	-55°C ~ 175°C
Mounting Type	Through Hole
Package / Case	TO-247-3
RoHS Status	RoHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the DSA30C45HB are grouped based on the following substitution criteria:

Primary Substitution Parameters:

Voltage - DC Reverse (Vr) (Max): 45 V (fixed requirement)
Diode Configuration: 1 Pair Common Cathode (fixed requirement)
Technology: Schottky (fixed requirement)
Package / Case: TO-247-3 (fixed requirement)
Mounting Type: Through Hole (fixed requirement)
Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (fixed requirement)

Variable Parameters Allowing Substitution:

Current - Average Rectified (Io) (per Diode): 15 A, 20 A, or 30 A
Voltage - Forward (Vf) (Max) @ If: Varies by part
Current - Reverse Leakage @ Vr: Varies by part
Operating Temperature - Junction: -55°C ~ 175°C, -40°C ~ 175°C, or 150°C (Max)

All substitute parts maintain identical voltage rating, configuration, technology, and package specifications. Substitutes differ in current capacity and thermal characteristics, enabling selection based on application requirements and inventory availability.

Parameter Comparison

Part Number	Manufacturer	Current (Io) per Diode	Vf (Max) @ If	Reverse Leakage @ 45V	Operating Temp (Junction)	Inventory (Pcs)
DSA30C45HB	IXYS	15 A	740 mV @ 15 A	250 µA	-55°C ~ 175°C	1148
STPS3045CW	STMicroelectronics	15 A	570 mV @ 15 A	200 µA	200°C (Max)	1359
STPS30L45CW	STMicroelectronics	15 A	550 mV @ 15 A	400 µA	150°C (Max)	2600
STPS4045CWY	STMicroelectronics	20 A	760 mV @ 20 A	200 µA	-40°C ~ 175°C	3400
STPS40L45CW	STMicroelectronics	20 A	530 mV @ 20 A	600 µA	150°C (Max)	2300
STPS6045CW	STMicroelectronics	30 A	630 mV @ 30 A	500 µA	175°C (Max)	2200
STPS60L45CW	STMicroelectronics	30 A	550 mV @ 30 A	1.5 mA	150°C (Max)	1451
STPS61L45CW	STMicroelectronics	30 A	560 mV @ 30 A	1.5 mA	150°C (Max)	1410

Engineering Selection Recommendations

15 A Current Rating (Direct Equivalents):

STPS3045CW and STPS30L45CW are direct current-rated equivalents to the DSA30C45HB. Both parts maintain 15 A per-diode current capacity with identical voltage and package specifications. STPS3045CW offers extended maximum junction temperature (200°C) and lower forward voltage (570 mV @ 15 A). STPS30L45CW provides the highest inventory availability (2600 pcs) with reduced forward voltage (550 mV @ 15 A) but limited to 150°C maximum junction temperature.

20 A Current Rating (Higher Current Substitutes):

STPS4045CWY and STPS40L45CW provide 20 A per-diode capacity, supporting higher current applications. STPS4045CWY includes automotive qualification (AEC-Q101) and extended operating temperature range (-40°C ~ 175°C), matching the DSA30C45HB temperature span. STPS40L45CW offers lowest forward voltage (530 mV @ 20 A) but operates to 150°C maximum.

30 A Current Rating (Maximum Current Substitutes):

STPS6045CW, STPS60L45CW, and STPS61L45CW provide 30 A per-diode capacity for applications requiring higher current handling. STPS6045CW maintains 175°C maximum junction temperature matching the DSA30C45HB upper limit. STPS60L45CW and STPS61L45CW are limited to 150°C maximum but offer comparable forward voltage characteristics (550 mV and 560 mV respectively at 30 A).

All substitute parts maintain RoHS3 compliance, REACH unaffected status, and identical TO-247-3 through-hole packaging. Selection depends on application current requirements, thermal environment constraints, and forward voltage performance specifications.

Frequently Asked Questions (FAQ)

Q: Can STPS3045CW directly replace DSA30C45HB in all applications?

A: STPS3045CW maintains identical 15 A current rating, 45 V voltage rating, and TO-247-3 package. Both parts are Schottky diode arrays with 1 Pair Common Cathode configuration. STPS3045CW operates to 200°C maximum junction temperature compared to DSA30C45HB's -55°C ~ 175°C range. Direct substitution is valid for applications operating within 0°C ~ 175°C range.

Q: What is the difference between STPS30L45CW and STPS3045CW?

A: Both parts share 15 A current rating and 45 V voltage specification. STPS30L45CW features lower forward voltage (550 mV @ 15 A versus 570 mV) and higher reverse leakage (400 µA versus 200 µA). STPS30L45CW is limited to 150°C maximum junction temperature, while STPS3045CW operates to 200°C. Selection depends on thermal environment and leakage current tolerance.

Q: Can higher current-rated parts (20 A or 30 A) substitute for the 15 A DSA30C45HB?

A: Yes. STPS4045CWY, STPS40L45CW, STPS6045CW, STPS60L45CW, and STPS61L45CW all maintain 45 V voltage rating, Schottky technology, 1 Pair Common Cathode configuration, and TO-247-3 package. Higher current ratings provide design margin and are electrically compatible. Forward voltage and reverse leakage characteristics differ; verify application requirements before selection.

Q: Does STPS4045CWY automotive qualification affect general industrial use?

A: STPS4045CWY includes AEC-Q101 automotive qualification and -40°C ~ 175°C operating range. These specifications exceed general industrial requirements and do not restrict use in non-automotive applications. The part is fully compatible with DSA30C45HB footprint and electrical specifications.

Q: What is the significance of the "L" designation in part numbers like STPS30L45CW?

A: The "L" designation indicates optimized low forward voltage performance. STPS30L45CW (550 mV @ 15 A) and STPS40L45CW (530 mV @ 20 A) feature reduced forward voltage compared to standard variants. This reduces power dissipation in high-current applications but may increase reverse leakage current.

Q: Are all substitute parts available in the same TO-247-3 package?

A: Yes. All substitute parts listed are packaged in TO-247-3 through-hole format with identical mechanical dimensions and pin configuration. PCB layout and thermal management considerations remain consistent across all parts.

Q: What inventory considerations apply to substitute selection?

A: STPS30L45CW offers highest inventory (2600 pcs), followed by STPS4045CWY (3400 pcs). DSA30C45HB maintains 1148 pcs in stock. Inventory availability may influence substitution decisions for high-volume production requirements.

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