DSS1-60BA Equivalent & Substitute Parts

Part Overview

The DSS1-60BA is a Schottky rectifier diode manufactured by IXYS, rated for 60 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Schottky diodes in this voltage and current class are widely used in power supply circuits, reverse polarity protection, and high-frequency rectification applications where fast recovery characteristics are required. The DSS1-60BA's fast recovery time (≤500 ns at >200 mA) and low forward voltage drop support efficient switching performance in these applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	60	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 1 A	mV
Speed	Fast Recovery ≤500 ns, >200 mA (Io)	ns
Current - Reverse Leakage @ Vr	100	µA @ 60 V
Mounting Type	Surface Mount	—
Package / Case	DO-214AC, SMA	—
Operating Temperature - Junction	-55 to 150	°C
Technology	Schottky	—

Substitute Part Grouping Explanation

Substitution of the DSS1-60BA is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 60 V
Current - Average Rectified (Io): 1 A minimum
Package / Case: DO-214AC (SMA) surface mount
Technology: Schottky
Speed: Fast Recovery ≤500 ns, >200 mA (Io)
Mounting Type: Surface Mount

Allowable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: Lower values are acceptable (improved performance)
Current - Reverse Leakage @ Vr: Lower values are acceptable (improved performance)
Operating Temperature - Junction: Extended ranges are acceptable
Current - Average Rectified (Io): Higher ratings are acceptable (backward compatible)

Substitute parts are grouped into two categories:

Direct Equivalents (1 A rated): Parts with identical 1 A current rating and 60 V voltage specification.

Higher Current Alternatives (2 A rated): Parts with 2 A current rating, which operate within the same voltage class and package but provide increased current capacity. These are suitable for applications where the original 1 A specification is not a limiting constraint.

Parameter Comparison

Parameter	DSS1-60BA (IXYS)	B160-13-F (Diodes Inc.)	STPS160A (STMicro)	STPS160AY (STMicro)	STPS1L60A (STMicro)	STPS2L60A (STMicro)	STPS2L60AY (STMicro)
Voltage - DC Reverse (Vr) (Max)	60 V	60 V	60 V	60 V	60 V	60 V	60 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A	1 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 1 A	700 mV @ 1 A	670 mV @ 1 A	670 mV @ 1 A	570 mV @ 1 A	600 mV @ 2 A	600 mV @ 2 A
Speed	Fast Recovery ≤500 ns, >200 mA	Fast Recovery ≤500 ns, >200 mA	Fast Recovery ≤500 ns, >200 mA	Fast Recovery ≤500 ns, >200 mA	Fast Recovery ≤500 ns, >200 mA	Fast Recovery ≤500 ns, >200 mA	Fast Recovery ≤500 ns, >200 mA
Current - Reverse Leakage @ Vr	100 µA @ 60 V	500 µA @ 60 V	4 µA @ 60 V	4 µA @ 60 V	50 µA @ 60 V	100 µA @ 60 V	100 µA @ 60 V
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Operating Temperature - Junction	-55 to 150°C	-65 to 150°C	150°C (Max)	-40 to 150°C	150°C (Max)	150°C (Max)	-40 to 150°C
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (1 A Applications):

The STPS160A and STPS160AY from STMicroelectronics are the primary direct equivalents to the DSS1-60BA. Both parts maintain the 60 V / 1 A specification and DO-214AC (SMA) package. STPS160A is available in standard cut tape and digi-reel packaging. STPS160AY is qualified to AEC-Q101 automotive standards and is supplied in tape and reel format, with an extended operating temperature range of -40°C to 150°C.

The STPS1L60A offers improved forward voltage characteristics (570 mV @ 1 A versus 500 mV @ 1 A for the DSS1-60BA) and lower reverse leakage (50 µA @ 60 V), making it suitable for applications where thermal efficiency is a secondary consideration.

The B160-13-F from Diodes Incorporated is a direct 1 A equivalent with extended temperature range (-65°C to 150°C) and ROHS3 compliance. This part exhibits higher forward voltage (700 mV @ 1 A) and higher reverse leakage (500 µA @ 60 V) compared to the original specification.

For Higher Current Applications (2 A Capacity):

The STPS2L60A and STPS2L60AY are rated for 2 A average rectified current at 60 V reverse voltage. These parts are suitable for applications where the original 1 A specification provides insufficient margin or where circuit redesign permits higher current handling. STPS2L60AY includes automotive qualification (AEC-Q101) and extended temperature range (-40°C to 150°C).

Compliance and Availability:

All substitute parts listed are active products with ROHS3 compliance and REACH unaffected status. Inventory availability is confirmed for all alternatives, with STPS2L60A and B160-13-F showing the highest stock levels (40,200 and 245,300 units respectively).

Frequently Asked Questions (FAQ)

Q: Can the STPS2L60A or STPS2L60AY be used as a direct replacement for the DSS1-60BA?

A: Yes. The STPS2L60A and STPS2L60AY are electrically compatible with the DSS1-60BA. Both maintain the 60 V reverse voltage specification and DO-214AC (SMA) package. The 2 A current rating is a higher specification that does not prevent operation in 1 A applications. Forward voltage and reverse leakage characteristics differ slightly but remain within acceptable ranges for most rectification circuits.

Q: What is the difference between STPS160A and STPS160AY?

A: Both parts are 60 V / 1 A Schottky diodes in DO-214AC (SMA) packages with identical electrical characteristics (670 mV forward voltage, 4 µA reverse leakage). The primary differences are: STPS160AY is qualified to AEC-Q101 automotive standards, operates over -40°C to 150°C (versus unspecified minimum for STPS160A), and is supplied in tape and reel packaging (versus cut tape and digi-reel for STPS160A).

Q: How does the forward voltage of substitute parts compare to the original DSS1-60BA?

A: The DSS1-60BA specifies 500 mV forward voltage at 1 A. Substitute parts vary: STPS1L60A (570 mV), STPS160A and STPS160AY (670 mV), STPS2L60A and STPS2L60AY (600 mV at 2 A), and B160-13-F (700 mV). Higher forward voltage results in increased power dissipation. For applications sensitive to thermal performance, STPS1L60A offers the closest match to the original specification.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts are supplied in DO-214AC (SMA) surface mount packages, ensuring mechanical and electrical compatibility with the original DSS1-60BA footprint. Packaging formats (cut tape, digi-reel, or tape and reel) vary by manufacturer and part number but do not affect board-level compatibility.

Q: What is the significance of the reverse leakage current difference?

A: Reverse leakage current affects standby power consumption and circuit performance at elevated temperatures. The DSS1-60BA specifies 100 µA @ 60 V. STPS160A and STPS160AY offer significantly lower leakage (4 µA), while B160-13-F exhibits higher leakage (500 µA). For low-power or battery-operated applications, lower reverse leakage is preferable.

Q: Can I use an automotive-qualified part (STPS160AY or STPS2L60AY) in non-automotive applications?

A: Yes. Automotive qualification (AEC-Q101) indicates additional testing and reliability screening. These parts are fully functional in non-automotive applications and offer the same electrical performance as their non-automotive counterparts, with the added benefit of extended temperature range specifications.

Q: What is the moisture sensitivity level (MSL) for these parts?

A: All parts listed, including the original DSS1-60BA and all substitutes, have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

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