DST1050S-A Equivalent & Substitute Parts Reference Page

Part Overview

The Littelfuse DST1050S-A is a Schottky rectifier diode, specified for 50 V DC reverse voltage and 10A average rectified current, in a TO-277B surface-mount package. It is active and AEC-Q101 automotive qualified, suitable for applications requiring fast recovery and reliability. Finding alternative models for DST1050S-A is necessary for ensuring supply chain redundancy, managing inventory challenges, and matching critical parameters for design continuity in the Diodes, Rectifiers category.

Key Parameters

Manufacturer Part Number	Technology	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Speed	Current - Reverse Leakage @ Vr	Package / Case	Supplier Device Package	Mounting Type	Operating Temperature - Junction	RoHS Status	Qualification	Product Status	Moisture Sensitivity Level (MSL)
DST1050S-A	Schottky	50 V	10A	550 mV @ 10 A	Fast Recovery =< 500ns, > 200mA (Io)	1.5 mA @ 50 V	TO-277, 3-PowerDFN	TO-277B	Surface Mount	-55°C ~ 150°C	ROHS3 Compliant	AEC-Q101	Active	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution logic is strictly based on matching the critical parameters fundamental to device compatibility in the Diodes, Rectifiers category. The parameters considered are: technology (Schottky), DC reverse voltage rating (Vr), average rectified current (Io), maximum forward voltage (Vf) at specified current, speed (recovery time), reverse leakage current at Vr, mounting type (surface mount), package/case, supplier device package, operating temperature range, RoHS status, qualification (AEC-Q101 if specified), product status, and moisture sensitivity level (MSL). Parts with identical or compatible values for these parameters are included as substitutes or parametric equivalents.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Technology	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Speed	Current - Reverse Leakage @ Vr	Package / Case	Supplier Device Package	Mounting Type	Operating Temperature - Junction	RoHS Status	Qualification	Product Status	Moisture Sensitivity Level (MSL)
DST1050S-A	Littelfuse Inc.	Schottky	50 V	10A	550 mV @ 10 A	Fast Recovery =< 500ns, > 200mA (Io)	1.5 mA @ 50 V	TO-277, 3-PowerDFN	TO-277B	Surface Mount	-55°C ~ 150°C	ROHS3 Compliant	AEC-Q101	Active	1 (Unlimited)
DST1050S	Littelfuse Inc.	Schottky	50 V	10A	550 mV @ 10 A	Fast Recovery =< 500ns, > 200mA (Io)	1.5 mA @ 50 V	TO-277, 3-PowerDFN	TO-277B	Surface Mount	-55°C ~ 150°C	ROHS3 Compliant	-	Active	1 (Unlimited)
FSV1045V	onsemi	Schottky	45 V	10A	440 mV @ 10 A	Fast Recovery =< 500ns, > 200mA (Io)	220 µA @ 45 V	TO-277, 3-PowerDFN	TO-277-3	Surface Mount	-55°C ~ 150°C	ROHS3 Compliant	-	Not For New Designs	1 (Unlimited)
FSV1550V	onsemi	Schottky	50 V	15A	510 mV @ 15 A	Fast Recovery =< 500ns, > 200mA (Io)	320 µA @ 50 V	TO-277, 3-PowerDFN	TO-277-3	Surface Mount	-55°C ~ 155°C	ROHS3 Compliant	-	Not For New Designs	1 (Unlimited)
FSV2050V	onsemi	Schottky	50 V	20A	550 mV @ 20 A	Fast Recovery =< 500ns, > 200mA (Io)	320 µA @ 50 V	TO-277, 3-PowerDFN	TO-277-3	Surface Mount	-55°C ~ 150°C	ROHS3 Compliant	-	Active	1 (Unlimited)
MBR1045ULPS-TP	Micro Commercial Co	Schottky	45 V	10A	470 mV @ 10 A	Fast Recovery =< 500ns, > 200mA (Io)	250 µA @ 45 V	TO-277, 3-PowerDFN	TO-277-3	Surface Mount	-55°C ~ 150°C	ROHS3 Compliant	-	Obsolete	1 (Unlimited)
MBR10U45L-TP	Micro Commercial Co	Schottky	45 V	10A	470 mV @ 10 A	Fast Recovery =< 500ns, > 200mA (Io)	500 µA @ 45 V	TO-277, 3-PowerDFN	TO-277-3	Surface Mount	-55°C ~ 150°C	ROHS3 Compliant	-	Active	1 (Unlimited)
PMEG045T050EPDZ	Nexperia USA Inc.	Schottky	45 V	5A	465 mV @ 5 A	Fast Recovery =< 500ns, > 200mA (Io)	44 µA @ 45 V	CFP15	CFP15	Surface Mount	175°C (Max)	ROHS3 Compliant	AEC-Q101	Active	1 (Unlimited)
ST1050S	SMC Diode Solutions	Schottky	50 V	10A	550 mV @ 10 A	Fast Recovery =< 500ns, > 200mA (Io)	1.5 mA @ 50 V	TO-277, 3-PowerDFN	TO-277B	Surface Mount	-55°C ~ 150°C	ROHS3 Compliant	-	Active	1 (Unlimited)

Engineering Selection Recommendations

Substitutes with identical technology, voltage ratings, current ratings, package/case, and compliance certifications (such as ROHS3 and, if specified, AEC-Q101) are appropriate for design continuity. Active product status is essential for new designs; parts with "Not For New Designs" or "Obsolete" status should be considered only for non-production or end-of-life support, subject strictly to project compliance requirements. For automotive-qualified applications, AEC-Q101 listed substitutes (DST1050S-A, PMEG045T050EPDZ) fulfill the necessary criteria. Moisture Sensitivity Level (MSL) of 1 ensures unlimited shelf life for all parts listed.

Frequently Asked Questions (FAQ)

Q1: Which key parameters must be matched for DST1050S-A equivalents?
A1: Technology (Schottky), DC reverse voltage (Vr), average rectified current (Io), maximum forward voltage (Vf) at rated current, speed (recovery), current reverse leakage at Vr, mounting type, package/case, operating temperature range, RoHS and AEC-Q101 status, product status, and MSL.

Q2: How critical is package compatibility when substituting DST1050S-A?
A2: The TO-277B and TO-277, 3-PowerDFN, or direct package equivalents are required for surface mount compatibility.

Q3: Are automotive-qualified parts mandatory for automotive applications?
A3: Only parts with AEC-Q101 qualification such as DST1050S-A and PMEG045T050EPDZ are suitable, matching the original specification.

Q4: What does "Active" product status indicate for substitute selection?
A4: "Active" indicates that the part is in production and recommended for ongoing designs and applications.

Q5: Why does RoHS3 compliance matter in selecting rectifier diode substitutes?
A5: RoHS3 compliance ensures the substitute meets environmental and regulatory requirements aligned with the main part.

Q6: What is the importance of Moisture Sensitivity Level (MSL) 1 in the listed substitutes?
A6: MSL 1 guarantees that all substitutes have unlimited floor life, simplifying supply and handling processes.

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