SD103AW-13 Equivalent & Substitute Parts

Part Overview

The SD103AW-13 is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 40 V DC reverse voltage and 350 mA average rectified current in a surface mount SOD-123 package. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and production continuity. Equivalent parts maintain identical electrical specifications, while substitute parts offer compatible performance within defined parameter tolerances for the intended application.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	350	mA
Voltage - Forward (Vf) (Max) @ If	600 mV @ 200 mA	—
Reverse Recovery Time (trr)	10	ns
Current - Reverse Leakage @ Vr	5 µA @ 30 V	—
Mounting Type	Surface Mount	—
Package / Case	SOD-123	—
Operating Temperature - Junction	-65 to 125	°C

Substitute Part Grouping Explanation

Substitution of the SD103AW-13 is determined by the following critical parameters: Schottky technology classification, 40 V maximum reverse voltage rating, 350 mA minimum average rectified current capacity, SOD-123 surface mount package, and fast recovery characteristics (≤500 ns for currents >200 mA). Parts are grouped into three categories based on substitution relationship:

Parametric Equivalents maintain all electrical specifications and differ only in packaging format (Tape & Reel versus Cut Tape) or minor manufacturing revisions. These parts are direct functional replacements.

Direct Manufacturer Equivalents from alternative manufacturers (Micro Commercial Co, STMicroelectronics, Comchip Technology) meet or exceed the primary electrical specifications while maintaining SOD-123 package compatibility. Variations in secondary parameters such as forward voltage, reverse leakage current, or capacitance are within acceptable engineering tolerances for Schottky rectifier applications.

Uprated Substitutes provide higher current ratings (500 mA versus 350 mA) while maintaining 40 V reverse voltage and SOD-123 packaging. These parts are suitable for applications where the original 350 mA specification provides insufficient margin.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [mA]	Vf (Max) @ If [mV]	trr [ns]	Ir @ Vr [µA]	Tj (Max) [°C]	Product Status	RoHS Status
SD103AW-13	Diodes Incorporated	40	350	600 @ 200	10	5 @ 30	125	Obsolete	Non-compliant
SD103AW-13-F	Diodes Incorporated	40	350	600 @ 200	10	5 @ 30	125	Active	ROHS3 Compliant
SD103AW-7-F	Diodes Incorporated	40	350	600 @ 200	10	5 @ 30	125	Active	ROHS3 Compliant
SD103AW-TP	Micro Commercial Co	40	350	600 @ 200	10	5 @ 30	125	Active	ROHS3 Compliant
SD103CW-TP	Micro Commercial Co	20	350	600 @ 200	10	5 @ 10	125	Active	ROHS3 Compliant
BAT48ZFILM	STMicroelectronics	40	350	750 @ 200	10	25 @ 40	150	Active	ROHS3 Compliant
CDBW0540-G	Comchip Technology	40	500	510 @ 500	10	20 @ 40	125	Active	ROHS3 Compliant
MBR0540-TP	Micro Commercial Co	40	500	550 @ 500	10	200 @ 40	150	Active	ROHS3 Compliant
MBR0540-TP-HF	Micro Commercial Co	40	500	550 @ 500	10	200 @ 40	150	Active	Not specified
MBR0540L-TP	Micro Commercial Co	40	500	510 @ 500	10	20 @ 40	125	Active	ROHS3 Compliant
MBR0540L-TP-HF	Micro Commercial Co	40	500	510 @ 500	10	20 @ 40	125	Active	Not specified

Engineering Selection Recommendations

Primary Recommendation: SD103AW-13-F or SD103AW-7-F

These Diodes Incorporated parts are parametric equivalents to the SD103AW-13, maintaining identical electrical specifications while offering active product status and ROHS3 compliance. SD103AW-13-F is supplied in Tape & Reel packaging; SD103AW-7-F is supplied in Cut Tape & Digi-Reel format. Selection between these two depends on procurement and assembly requirements.

Secondary Recommendation: SD103AW-TP

Manufactured by Micro Commercial Co, this part provides identical electrical performance to the original SD103AW-13 with active status and ROHS3 compliance. It is supplied in Cut Tape & Digi-Reel packaging.

Alternative for Reduced Forward Voltage: CDBW0540-G or MBR0540L-TP

These 500 mA rated parts provide higher current capacity and lower forward voltage characteristics. CDBW0540-G (Comchip Technology) offers 510 mV forward voltage at 500 mA. MBR0540L-TP (Micro Commercial Co) provides 510 mV forward voltage at 500 mA with extended temperature range (-65°C to 125°C). Both maintain 40 V reverse voltage and SOD-123 packaging. These substitutes are suitable for applications where the original 350 mA rating provides insufficient margin or where reduced forward voltage drop is beneficial.

Not Recommended: SD103CW-TP

This part features a reduced 20 V reverse voltage rating, making it unsuitable for 40 V applications. Selection of this part would result in inadequate voltage protection.

Not Recommended: BAT48ZFILM

While this STMicroelectronics part maintains 40 V and 350 mA specifications, it exhibits elevated forward voltage (750 mV @ 200 mA versus 600 mV) and significantly higher reverse leakage current (25 µA @ 40 V versus 5 µA @ 30 V). These characteristics make it a less favorable substitute except in applications where higher operating temperature (150°C maximum) is required.

Frequently Asked Questions (FAQ)

Q: Can SD103AW-13-F be used as a direct replacement for SD103AW-13?

A: Yes. SD103AW-13-F is a parametric equivalent with identical electrical specifications. The primary difference is product status (active versus obsolete) and RoHS compliance. Packaging format differs (Tape & Reel versus unspecified), but the component itself is functionally identical.

Q: What is the difference between SD103AW-13-F and SD103AW-7-F?

A: Both parts are parametric equivalents with identical electrical specifications and product status. The difference is packaging format: SD103AW-13-F is supplied in Tape & Reel; SD103AW-7-F is supplied in Cut Tape & Digi-Reel. Selection depends on assembly line requirements and procurement preferences.

Q: Can MBR0540L-TP replace SD103AW-13?

A: Yes, with engineering consideration. MBR0540L-TP maintains the 40 V reverse voltage and SOD-123 package. It provides higher current capacity (500 mA versus 350 mA) and lower forward voltage (510 mV @ 500 mA). The reverse leakage current is lower (20 µA @ 40 V versus 5 µA @ 30 V). This part is suitable for applications where the original 350 mA specification provides insufficient margin or where reduced forward voltage drop is beneficial.

Q: Why is SD103CW-TP not recommended?

A: SD103CW-TP has a maximum reverse voltage rating of 20 V, compared to 40 V for the SD103AW-13. Using this part in a 40 V application would result in inadequate voltage protection and potential component failure.

Q: What is the significance of the packaging designations (TR, CT, Bulk)?

A: Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel designations indicate the physical format in which components are supplied. Tape & Reel is standard for automated assembly lines. Cut Tape & Digi-Reel provides flexibility for lower-volume or mixed-component assembly. Bulk packaging indicates components supplied without standard tape or reel format. Selection depends on assembly equipment and production volume requirements.

Q: Are all recommended substitutes RoHS3 compliant?

A: All primary and secondary recommendations (SD103AW-13-F, SD103AW-7-F, SD103AW-TP, CDBW0540-G, and MBR0540L-TP) are ROHS3 compliant. The original SD103AW-13 is RoHS non-compliant. MBR0540-TP-HF and MBR0540L-TP-HF do not specify RoHS status in the provided data.

Q: What is the operating temperature range difference between substitutes?

A: The original SD103AW-13 and most parametric equivalents operate from -65°C to 125°C. BAT48ZFILM and MBR0540-TP extend the maximum junction temperature to 150°C. MBR0540L-TP maintains the -65°C to 125°C range. SD103AW-TP and SD103CW-TP operate from -55°C to 125°C. Selection depends on application thermal requirements.

Q: Can BAT48ZFILM be used in place of SD103AW-13?

A: BAT48ZFILM maintains 40 V reverse voltage and 350 mA current rating in SOD-123 packaging. However, it exhibits higher forward voltage (750 mV @ 200 mA versus 600 mV) and significantly higher reverse leakage current (25 µA @ 40 V versus 5 µA @ 30 V). This part is suitable only for applications where these parameter variations are acceptable or where the extended temperature range (150°C maximum) is required.

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