HSM350J/TR13 Equivalent & Substitute Parts

Part Overview

The HSM350J/TR13 is a Schottky rectifier diode manufactured by Microchip Technology, rated for 50 V DC reverse voltage and 3 A average rectified current in a DO-214AB surface mount package. This component is classified as Active product status and is supplied in Tape & Reel packaging. Equivalent and substitute parts are identified based on matching or compatible electrical ratings and mechanical packaging specifications. Alternative components may be required due to inventory availability, supply chain considerations, or design flexibility within specified parameter ranges.

Key Parameters

Parameter	HSM350J/TR13 Value
Voltage - DC Reverse (Vr) (Max)	50 V
Current - Average Rectified (Io)	3 A
Voltage - Forward (Vf) (Max) @ If	620 mV @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	100 µA @ 50 V
Technology	Schottky
Mounting Type	Surface Mount
Package / Case	DO-214AB, SMC
Operating Temperature - Junction	-55°C ~ 175°C
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the HSM350J/TR13 are grouped based on the following substitution criteria:

Primary Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 50 V or higher
Current - Average Rectified (Io): 3 A or higher
Technology: Schottky
Mounting Type: Surface Mount
Package / Case: DO-214AB or SMC compatible
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Acceptable Substitution Logic: Parts with identical or superior voltage ratings (50 V or higher) and equal or greater current capacity (3 A or higher) are considered direct substitutes. Parts with lower voltage ratings (40 V) are listed as functional alternatives for applications where the lower voltage specification is acceptable. Parts with higher current ratings (5 A, 6 A) are suitable for designs requiring additional current margin. All substitute parts maintain Schottky technology, surface mount configuration, and DO-214AB/SMC packaging compatibility.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (A)	Vf (Max) @ If	Reverse Leakage @ Vr	Operating Temp (Junction)	RoHS Status	Product Status
HSM350J/TR13	Microchip Technology	50 V	3	620 mV @ 3 A	100 µA @ 50 V	-55°C ~ 175°C	RoHS non-compliant	Active
B340Q-13-F	Diodes Incorporated	40 V	3	500 mV @ 3 A	500 µA @ 40 V	-55°C ~ 150°C	ROHS3 Compliant	Active
B350-13-F	Diodes Incorporated	50 V	3	700 mV @ 3 A	500 µA @ 50 V	-55°C ~ 125°C	ROHS3 Compliant	Active
B550CQ-13-F	Diodes Incorporated	50 V	5	700 mV @ 5 A	500 µA @ 50 V	-55°C ~ 150°C	ROHS3 Compliant	Active
SK64L-TP	Micro Commercial Co	40 V	6	650 mV @ 6 A	1 mA @ 40 V	-55°C ~ 150°C	ROHS3 Compliant	Not For New Designs
SS34-M3/57T	Vishay General Semiconductor - Diodes Division	40 V	3	500 mV @ 3 A	500 µA @ 40 V	-55°C ~ 125°C	ROHS3 Compliant	Active
SS35	Taiwan Semiconductor Corporation	50 V	3	750 mV @ 3 A	500 µA @ 50 V	-55°C ~ 150°C	ROHS3 Compliant	Active
STPS340S	STMicroelectronics	40 V	3	630 mV @ 3 A	20 µA @ 40 V	-55°C ~ 150°C	ROHS3 Compliant	Active
STPS340SY	STMicroelectronics	40 V	3	630 mV @ 3 A	20 µA @ 40 V	-40°C ~ 150°C	ROHS3 Compliant	Active
STPS3L40S	STMicroelectronics	40 V	3	500 mV @ 3 A	100 µA @ 40 V	-55°C ~ 150°C	ROHS3 Compliant	Active
STPS3L40SY	STMicroelectronics	40 V	3	500 mV @ 3 A	100 µA @ 40 V	-40°C ~ 150°C	ROHS3 Compliant	Active

Engineering Selection Recommendations

Direct Equivalents (50 V, 3 A Rating):

B350-13-F and SS35 are direct electrical equivalents to the HSM350J/TR13, both rated for 50 V reverse voltage and 3 A average rectified current. B350-13-F is manufactured by Diodes Incorporated and carries ROHS3 compliance with Active product status. SS35 is manufactured by Taiwan Semiconductor Corporation and also carries ROHS3 compliance with Active product status. Both parts maintain the DO-214AB/SMC package specification and fast recovery characteristics.

Higher Current Capacity Alternative (50 V, 5 A Rating):

B550CQ-13-F provides increased current capacity at 5 A while maintaining the 50 V voltage specification. This part is suitable for designs requiring additional current margin and carries AEC-Q101 automotive qualification with ROHS3 compliance and Active product status.

Lower Voltage Alternatives (40 V, 3 A Rating):

B340Q-13-F, SS34-M3/57T, STPS340S, STPS340SY, STPS3L40S, and STPS3L40SY are rated for 40 V reverse voltage with 3 A current capacity. These parts are suitable for applications where the lower voltage specification is acceptable. STPS340SY and STPS3L40SY carry AEC-Q101 automotive qualification. All maintain ROHS3 compliance and Active product status except where noted.

Higher Current Capacity with Lower Voltage (40 V, 6 A Rating):

SK64L-TP provides 6 A current capacity at 40 V reverse voltage. This part carries ROHS3 compliance but is designated as Not For New Designs and should not be selected for new circuit designs.

Compliance Considerations:

The HSM350J/TR13 is RoHS non-compliant. All listed substitute parts except the main part carry ROHS3 compliance, providing regulatory advantage for new designs or applications with RoHS requirements.

Frequently Asked Questions (FAQ)

Q: Can B350-13-F be used as a direct replacement for HSM350J/TR13?

A: B350-13-F is electrically compatible as a direct substitute. Both parts are rated for 50 V reverse voltage and 3 A average rectified current with identical DO-214AB/SMC packaging. B350-13-F offers the additional advantage of ROHS3 compliance compared to the HSM350J/TR13.

Q: What is the difference between 40 V and 50 V rated parts?

A: The voltage rating indicates the maximum reverse voltage the diode can withstand. A 50 V rated part (HSM350J/TR13, B350-13-F, SS35) can be used in applications requiring up to 50 V reverse voltage. A 40 V rated part (B340Q-13-F, STPS340SY, etc.) is limited to applications with maximum 40 V reverse voltage. A 40 V part cannot be substituted for a 50 V requirement.

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

A: All listed substitute parts use DO-214AB or SMC packaging, which are mechanically and electrically compatible. The packaging designation may vary slightly between manufacturers (DO-214AB, SMC, or both), but the physical dimensions and pin configuration remain consistent for surface mount assembly.

Q: What does "Not For New Designs" mean for SK64L-TP?

A: This designation indicates the part is in mature or end-of-life status and should not be selected for new circuit designs. While the part may still be available, it is not recommended for applications under development.

Q: Why do some parts have higher current ratings (5 A, 6 A)?

A: Parts with higher current ratings provide additional design margin and can handle greater current loads. B550CQ-13-F (5 A) and SK64L-TP (6 A) are suitable for applications requiring higher current capacity than the 3 A specification of the HSM350J/TR13.

Q: What is the significance of AEC-Q101 qualification?

A: AEC-Q101 is an automotive qualification standard. Parts carrying this qualification (B340Q-13-F, B550CQ-13-F, STPS340SY, STPS3L40SY) have been tested and approved for automotive applications and meet stringent reliability requirements.

Q: How does forward voltage (Vf) affect part selection?

A: Forward voltage indicates the voltage drop across the diode when conducting current. The HSM350J/TR13 has a maximum forward voltage of 620 mV @ 3 A. Substitute parts show variations in forward voltage (ranging from 500 mV to 750 mV @ rated current). Lower forward voltage results in reduced power dissipation and heat generation. Selection should consider the specific application's thermal and efficiency requirements.

Q: What is reverse leakage current and why does it vary among substitutes?

A: Reverse leakage current is the small current that flows through the diode when reverse biased. The HSM350J/TR13 specifies 100 µA @ 50 V. Substitute parts show variations (20 µA to 1 mA depending on part and voltage rating). Lower leakage current indicates better diode quality and lower standby power consumption. Applications sensitive to leakage current should consider this parameter during selection.

Q: Can STPS3L40SY be used in place of HSM350J/TR13?

A: STPS3L40SY is rated for 40 V reverse voltage compared to the HSM350J/TR13's 50 V rating. It can only be used if the application's maximum reverse voltage does not exceed 40 V. The part offers lower forward voltage (500 mV @ 3 A) and carries AEC-Q101 automotive qualification with ROHS3 compliance.

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