SD101BW-13 Equivalent & Substitute Parts

Part Overview

The SD101BW-13 is a Schottky rectifier diode manufactured by Diodes Incorporated, designed for surface mount applications in the SOD-123 package. This component is rated for 50 V DC reverse voltage with a 15 mA average rectified current and a maximum forward voltage of 950 mV at 15 mA. The part is discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	15	mA
Voltage - Forward (Vf) (Max) @ If	950 mV @ 15 mA	—
Reverse Recovery Time (trr)	1	ns
Current - Reverse Leakage @ Vr	200 nA @ 40 V	—
Package / Case	SOD-123	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-65 to 125	°C

Substitute Part Grouping Explanation

Substitution of the SD101BW-13 is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

Schottky diode technology
Minimum 50 V DC reverse voltage rating
Minimum 15 mA average rectified current capability
SOD-123 surface mount package
Forward voltage characteristics compatible with 950 mV @ 15 mA specification
Reverse recovery time of 1 ns or faster
Reverse leakage current at rated voltage

Substitute Classification:

Group 1 - Direct Parametric Equivalents: Parts meeting all primary criteria with identical or superior electrical specifications and active product status.

Group 2 - Functional Equivalents with Parameter Variance: Parts meeting core substitution criteria but with electrical parameters that differ from the original specification. These parts function in the same circuit role but require circuit-level validation.

Parameter Comparison

Parameter	SD101BW-13 (Original)	SD101BW-7-F (Diodes Inc.)	SD101BW-TP (MCC)	STPS0540ZY (STMicroelectronics)
Manufacturer	Diodes Incorporated	Diodes Incorporated	Micro Commercial Co	STMicroelectronics
Product Status	Discontinued	Active	Active	Active
Technology	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	50 V	50 V	50 V	40 V
Current - Average Rectified (Io)	15 mA	15 mA	15 mA	500 mA
Voltage - Forward (Vf) (Max) @ If	950 mV @ 15 mA	950 mV @ 15 mA	950 mV @ 15 mA	500 mV @ 500 mA
Reverse Recovery Time (trr)	1 ns	1 ns	1 ns	Fast Recovery ≤ 500 ns
Current - Reverse Leakage @ Vr	200 nA @ 40 V	200 nA @ 40 V	200 nA @ 40 V	40 µA @ 40 V
Package / Case	SOD-123	SOD-123	SOD-123	SOD-123
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-65 to 125°C	-65 to 125°C	Max 125°C	-40 to 150°C
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Type	Bulk	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

SD101BW-7-F (Diodes Incorporated) is the primary direct substitute for the SD101BW-13. This part maintains identical electrical specifications across all critical parameters: 50 V reverse voltage, 15 mA average rectified current, 950 mV forward voltage at 15 mA, and 1 ns reverse recovery time. The SD101BW-7-F is currently in active production status with 16,060 units in stock. The part is ROHS3 compliant and available in Tape & Reel packaging, addressing the discontinuation of the original part while maintaining full electrical and mechanical compatibility.

SD101BW-TP (Micro Commercial Co) is a secondary direct substitute with identical electrical specifications to the SD101BW-13. This part is actively produced and ROHS3 compliant. The SD101BW-TP is available in Tape & Reel packaging with 2,487 units in stock. Selection of this part is appropriate where supply chain diversification or alternative manufacturer sourcing is required.

STPS0540ZY (STMicroelectronics) is a functional equivalent with significant parameter differences. This part operates at 40 V maximum reverse voltage (10 V lower than the original specification) and supports 500 mA average rectified current (33 times higher than the original specification). The reverse leakage current is 40 µA at 40 V, substantially higher than the 200 nA specification of the original part. The STPS0540ZY is suitable only for applications where the lower voltage rating and higher leakage current are acceptable, and where the increased current capability does not introduce thermal or circuit design complications. This part is ROHS3 compliant, automotive-grade, and actively produced with 3,300 units in stock.

Frequently Asked Questions (FAQ)

Q: Can the SD101BW-7-F directly replace the SD101BW-13 without circuit modification?

A: Yes. The SD101BW-7-F maintains identical electrical specifications across all critical parameters: 50 V reverse voltage, 15 mA average rectified current, 950 mV forward voltage at 15 mA, and 1 ns reverse recovery time. The part is mechanically compatible in the SOD-123 package and requires no circuit modification.

Q: What is the difference between the SD101BW-13 and SD101BW-7-F?

A: The primary difference is product status and packaging. The SD101BW-13 is discontinued and supplied in bulk packaging. The SD101BW-7-F is actively produced by Diodes Incorporated and supplied in Tape & Reel packaging. Electrical specifications are identical.

Q: Is the STPS0540ZY a suitable replacement for the SD101BW-13?

A: The STPS0540ZY is not a direct replacement. While both are Schottky diodes in SOD-123 packages, the STPS0540ZY has a 40 V maximum reverse voltage rating compared to the 50 V rating of the SD101BW-13. Additionally, the STPS0540ZY has significantly higher reverse leakage current (40 µA versus 200 nA) and supports 500 mA average rectified current versus 15 mA. The STPS0540ZY is suitable only for applications where these parameter differences are acceptable.

Q: What does RoHS compliance mean for these parts?

A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances regulations and does not contain restricted materials such as lead, cadmium, or mercury. The original SD101BW-13 is RoHS non-compliant. Both substitute parts SD101BW-7-F and SD101BW-TP are ROHS3 compliant, making them suitable for applications with RoHS requirements.

Q: Are there packaging considerations when switching from SD101BW-13 to substitute parts?

A: Yes. The SD101BW-13 is supplied in bulk packaging. The SD101BW-7-F and SD101BW-TP are supplied in Tape & Reel (TR) packaging, which is standard for automated assembly processes. The STPS0540ZY is supplied in Cut Tape (CT) and Digi-Reel® packaging. All parts use the same SOD-123 surface mount package and are mechanically compatible on printed circuit boards.

Q: What is the inventory status of these substitute parts?

A: SD101BW-7-F has 16,060 units in stock, SD101BW-TP has 2,487 units in stock, and STPS0540ZY has 3,300 units in stock. All parts are currently available for procurement.

Q: Can I use the STPS0540ZY in a circuit designed for the SD101BW-13?

A: The STPS0540ZY can be used only if the circuit design accommodates the lower 40 V reverse voltage rating and higher reverse leakage current. If the circuit operates at voltages above 40 V or requires low leakage characteristics, the STPS0540ZY is not suitable. Direct substitutes SD101BW-7-F or SD101BW-TP are recommended for full compatibility.

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