SD101CW-13 Equivalent & Substitute Parts

Part Overview

The SD101CW-13 is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 40 V DC reverse voltage and 15 mA average rectified current in a surface mount SOD-123 package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design support and procurement.

The SD101CW-13 operates across a junction temperature range of -65°C to 125°C with a forward voltage of 900 mV at 15 mA and exhibits a reverse recovery time of 1 ns. The part is classified as RoHS non-compliant and carries Moisture Sensitivity Level 1 (Unlimited).

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	15	mA
Voltage - Forward (Vf) (Max) @ If	900 mV @ 15 mA	mV
Reverse Recovery Time (trr)	1	ns
Current - Reverse Leakage @ Vr	200 nA @ 30 V	nA
Capacitance @ Vr, F	2.2 pF @ 0V, 1MHz	pF
Package / Case	SOD-123	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-65°C ~ 125°C	°C
Technology	Schottky	—
Speed Classification	Small Signal ≤ 200mA (Io), Any Speed	—

Substitute Part Grouping Explanation

Substitution of the SD101CW-13 is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 40 V
Package / Case: SOD-123
Mounting Type: Surface Mount
Technology: Schottky

Current Rating Considerations: Substitute parts are grouped into two categories based on average rectified current (Io):

Direct Equivalents (15 mA Rating): Parts with identical 15 mA current rating maintain the same electrical operating point as the original SD101CW-13. These parts preserve forward voltage characteristics and reverse recovery time specifications.
Higher Current Rated Substitutes (500 mA to 1 A Rating): Parts with elevated current ratings (500 mA or 1 A) operate at the same voltage class but provide increased current capacity. These parts exhibit different forward voltage characteristics, reverse leakage current, and capacitance values due to their higher current design. These substitutes are suitable for applications where the circuit can tolerate the higher current capability without adverse effects.

Compliance and Status Considerations: The original SD101CW-13 is RoHS non-compliant and discontinued. Active substitute parts listed below are RoHS3 compliant, providing compliance advantages for new designs and ongoing procurement.

Parameter Comparison

Parameter	SD101CW-13	SD101CW-7-F	SD101CW-TP	MBR0540-TP	NRVB0540T3G	STPS0540ZY	STPS140ZY
Manufacturer	Diodes Inc.	Diodes Inc.	Micro Commercial Co	Micro Commercial Co	onsemi	STMicroelectronics	STMicroelectronics
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	40 V	40 V	40 V	40 V	40 V
Current - Average Rectified (Io)	15 mA	15 mA	15 mA	500 mA	500 mA	500 mA	1 A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 15 mA	900 mV @ 15 mA	900 mV @ 15 mA	550 mV @ 500 mA	510 mV @ 500 mA	500 mV @ 500 mA	550 mV @ 1 A
Reverse Recovery Time (trr)	1 ns	1 ns	1 ns	—	—	—	—
Current - Reverse Leakage @ Vr	200 nA @ 30 V	200 nA @ 30 V	200 nA @ 30 V	200 µA @ 40 V	20 µA @ 40 V	40 µA @ 40 V	40 µA @ 400 V
Capacitance @ Vr, F	2.2 pF @ 0V, 1MHz	2.2 pF @ 0V, 1MHz	2.2 pF @ 0V, 1MHz	30 pF @ 4V, 1MHz	—	—	—
Speed Classification	Small Signal ≤ 200mA (Io), Any Speed	Small Signal ≤ 200mA (Io), Any Speed	Small Signal ≤ 200mA (Io), Any Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Package / Case	SOD-123	SOD-123	SOD-123	SOD-123	SOD-123	SOD-123	SOD-123
Operating Temperature - Junction	-65°C ~ 125°C	-65°C ~ 125°C	Max 125°C	-55°C ~ 150°C	-55°C ~ 150°C	-40°C ~ 150°C	-40°C ~ 150°C
Product Status	Discontinued	Active	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Automotive Grade	—	—	—	—	Yes (AEC-Q101)	Yes	Yes (AEC-Q101)
Packaging Format	—	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)

Engineering Selection Recommendations

Direct Equivalent Selection (15 mA Current Rating):

The SD101CW-7-F (Diodes Incorporated) and SD101CW-TP (Micro Commercial Co) are direct parametric equivalents to the SD101CW-13, maintaining identical electrical specifications including 15 mA current rating, 900 mV forward voltage at 15 mA, 1 ns reverse recovery time, and 2.2 pF capacitance. Both parts are active products with RoHS3 compliance. The SD101CW-7-F is available in Cut Tape and Digi-Reel packaging with 17,790 pieces in stock. The SD101CW-TP is available in Tape & Reel packaging with 1,390 pieces in stock. Selection between these two depends on packaging and inventory requirements.

Higher Current Rated Substitutes (500 mA to 1 A Rating):

For applications requiring increased current capacity within the 40 V voltage class, the following parts are available:

MBR0540-TP (Micro Commercial Co): 500 mA rating, 550 mV forward voltage at 500 mA, fast recovery speed, 1,858 pieces in stock, RoHS3 compliant.
NRVB0540T3G (onsemi): 500 mA rating, 510 mV forward voltage at 500 mA, fast recovery speed, automotive grade with AEC-Q101 qualification, 15,300 pieces in stock, RoHS3 compliant.
STPS0540ZY (STMicroelectronics): 500 mA rating, 500 mV forward voltage at 500 mA, fast recovery speed, automotive grade, 3,300 pieces in stock, RoHS3 compliant.
STPS140ZY (STMicroelectronics): 1 A rating, 550 mV forward voltage at 1 A, fast recovery speed, automotive grade with AEC-Q101 qualification, 12,050 pieces in stock, RoHS3 compliant.

Higher current rated parts exhibit lower forward voltage characteristics and increased reverse leakage current compared to the 15 mA rated parts. These substitutes are suitable only for circuits designed to accommodate the higher current capability and different electrical characteristics.

Compliance Advantage:

All active substitute parts listed are RoHS3 compliant, providing regulatory compliance for new designs and procurement cycles. The original SD101CW-13 is RoHS non-compliant.

Frequently Asked Questions (FAQ)

Q: Can I use SD101CW-7-F as a direct replacement for SD101CW-13?

A: Yes. The SD101CW-7-F is a direct parametric equivalent with identical voltage rating (40 V), current rating (15 mA), forward voltage (900 mV @ 15 mA), reverse recovery time (1 ns), and capacitance (2.2 pF @ 0V, 1MHz). Both use SOD-123 surface mount packaging. The primary difference is that SD101CW-7-F is active and RoHS3 compliant, whereas SD101CW-13 is discontinued and RoHS non-compliant.

Q: What is the difference between 15 mA and 500 mA rated parts?

A: The 15 mA rated parts (SD101CW-7-F, SD101CW-TP) are designed for low-current applications and maintain the original electrical characteristics of the SD101CW-13. The 500 mA and 1 A rated parts (MBR0540-TP, NRVB0540T3G, STPS0540ZY, STPS140ZY) are designed for higher-current applications and exhibit different forward voltage, reverse leakage current, and capacitance values. Higher current parts are suitable only if the circuit design accommodates these differences.

Q: Can I substitute a 500 mA part for the 15 mA SD101CW-13?

A: Substitution is possible only if the circuit design can tolerate the different electrical characteristics. The 500 mA parts exhibit lower forward voltage (500–550 mV @ 500 mA versus 900 mV @ 15 mA) and higher reverse leakage current (20–200 µA @ 40 V versus 200 nA @ 30 V). These differences may affect circuit performance, power dissipation, and leakage current behavior. Circuit validation is required to confirm compatibility.

Q: What packaging options are available for substitutes?

A: Substitute parts are available in two packaging formats: Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR). Cut Tape packaging is suitable for manual assembly and small-volume production. Tape & Reel packaging is designed for automated assembly equipment. Selection depends on manufacturing process and volume requirements.

Q: Are any substitute parts automotive qualified?

A: Yes. The NRVB0540T3G (onsemi), STPS0540ZY (STMicroelectronics), and STPS140ZY (STMicroelectronics) are automotive grade parts with AEC-Q101 qualification. These parts are suitable for automotive applications requiring qualified component status.

Q: What is the temperature operating range for substitute parts?

A: The original SD101CW-13 operates from -65°C to 125°C junction temperature. Direct equivalents SD101CW-7-F and SD101CW-TP maintain this range. Higher current rated substitutes operate from -55°C to 150°C (MBR0540-TP, NRVB0540T3G) or -40°C to 150°C (STPS0540ZY, STPS140ZY). Verify that the selected substitute meets the temperature requirements of the target application.

Q: Are all substitute parts RoHS compliant?

A: All active substitute parts listed are RoHS3 compliant. The original SD101CW-13 is RoHS non-compliant. RoHS3 compliance provides regulatory advantage for new designs and procurement in regions with RoHS requirements.

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