SD103BW-13 Equivalent & Substitute Parts

Part Overview

The SD103BW-13 is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 30 V DC reverse voltage and 350 mA average rectified current in a surface mount SOD-123 package. This component is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design requirements and production needs. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts offer compatible performance within defined parameter tolerances for the SOD-123 package category.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	350	mA
Voltage - Forward (Vf) (Max) @ If	600 mV @ 200 mA	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	10	ns
Current - Reverse Leakage @ Vr	5 µA @ 20 V	—
Capacitance @ Vr, F	28	pF @ 0V, 1MHz
Package / Case	SOD-123	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-65 to 125	°C

Substitute Part Grouping Explanation

Substitution of the SD103BW-13 is determined by the following critical parameters:

Electrical Compatibility Requirements:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 30 V
Current - Average Rectified (Io): Must equal or exceed 350 mA
Technology: Schottky rectifier diode
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Compatibility Requirements:

Package / Case: SOD-123 or SOD-123F
Mounting Type: Surface Mount

Compliance Requirements:

RoHS Status: ROHS3 Compliant preferred for new designs
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are organized into two categories:

Category 1 - Direct Electrical Equivalents (30 V, 350 mA): Parts maintaining identical voltage and current ratings with matching forward voltage characteristics.

Category 2 - Upgraded Current Rating Substitutes (30 V, 500 mA): Parts with increased current capacity while maintaining 30 V voltage rating, suitable for applications requiring higher current margin.

Category 3 - Elevated Voltage Substitutes (40 V, 350 mA): Parts with higher voltage rating while maintaining 350 mA current, applicable to circuits with higher voltage headroom requirements.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [mA]	Vf (Max) @ If [mV]	trr [ns]	Ir @ Vr [µA]	Package	Product Status	RoHS Status
SD103BW-13	Diodes Incorporated	30	350	600 @ 200 mA	10	5 @ 20 V	SOD-123	Discontinued	Non-compliant
SD103BW-7-F	Diodes Incorporated	30	350	600 @ 200 mA	10	5 @ 20 V	SOD-123	Active	ROHS3 Compliant
SD103BW-E3-08	Vishay General Semiconductor - Diodes Division	30	350	600 @ 200 mA	10	5 @ 20 V	SOD-123	Active	ROHS3 Compliant
SD103BW-TP	Micro Commercial Co	30	350	600 @ 200 mA	10	5 @ 20 V	SOD-123	Active	ROHS3 Compliant
SD103BW_R1_00001	Panjit International Inc.	30	350	600 @ 200 mA	—	5 @ 20 V	SOD-123	Active	ROHS3 Compliant
BAT48ZFILM	STMicroelectronics	40	350	750 @ 200 mA	—	25 @ 40 V	SOD-123	Active	ROHS3 Compliant
MBR0530-TP	Micro Commercial Co	30	500	550 @ 500 mA	—	200 @ 30 V	SOD-123	Active	ROHS3 Compliant
MBR0530L-TP	Micro Commercial Co	30	500	430 @ 500 mA	—	130 @ 30 V	SOD-123	Active	ROHS3 Compliant
MBR0530T3G	onsemi	30	500	430 @ 500 mA	—	130 @ 30 V	SOD-123	Active	ROHS3 Compliant
NRVB0530T1G	onsemi	30	500	430 @ 500 mA	—	130 @ 30 V	SOD-123	Active	ROHS3 Compliant
PMEG3005EH,115	Nexperia USA Inc.	30	500	430 @ 500 mA	—	150 @ 30 V	SOD-123F	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalents (Recommended for Drop-In Replacement):

The following parts maintain identical electrical specifications to the SD103BW-13 and are suitable for direct substitution:

SD103BW-7-F (Diodes Incorporated): Active product status with ROHS3 compliance. Identical voltage, current, and forward voltage characteristics. Tape & Reel packaging available with 17,660 units in stock.
SD103BW-E3-08 (Vishay General Semiconductor - Diodes Division): Active product status with ROHS3 compliance. Identical core specifications with 18,965 units in stock. Cut Tape & Digi-Reel packaging.
SD103BW-TP (Micro Commercial Co): Active product status with ROHS3 compliance. Identical electrical ratings with 15,435 units in stock. Tape & Reel packaging.
SD103BW_R1_00001 (Panjit International Inc.): Active product status with ROHS3 compliance. Maintains 30 V, 350 mA specifications with 4,066 units in stock.

Upgraded Current Rating Substitutes (30 V, 500 mA):

These parts provide increased current capacity while maintaining 30 V voltage rating:

MBR0530L-TP (Micro Commercial Co): 500 mA rating with reduced forward voltage (430 mV @ 500 mA). ROHS3 compliant with 80,969 units in stock. Tape & Reel packaging.
MBR0530T3G (onsemi): 500 mA rating with 430 mV forward voltage. ROHS3 compliant with 6,520 units in stock. Cut Tape & Digi-Reel packaging.
NRVB0530T1G (onsemi): 500 mA rating with automotive qualification (AEC-Q101). ROHS3 compliant with 212,100 units in stock. Tape & Reel packaging.
PMEG3005EH,115 (Nexperia USA Inc.): 500 mA rating in SOD-123F package variant. ROHS3 compliant with 6,200 units in stock. Tape & Reel packaging.

Elevated Voltage Substitute (40 V, 350 mA):

BAT48ZFILM (STMicroelectronics): 40 V rating with 350 mA current. ROHS3 compliant with 105,100 units in stock. Cut Tape & Digi-Reel packaging. Forward voltage is 750 mV @ 200 mA, higher than the original part.

All recommended substitutes are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, suitable for standard manufacturing and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can SD103BW-7-F be used as a direct replacement for SD103BW-13?

A: Yes. SD103BW-7-F maintains identical electrical specifications: 30 V reverse voltage, 350 mA average rectified current, 600 mV forward voltage @ 200 mA, and 10 ns reverse recovery time. Both use SOD-123 surface mount packaging. The primary difference is product status (active vs. discontinued) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between direct equivalents and upgraded current rating substitutes?

A: Direct equivalents (SD103BW-7-F, SD103BW-E3-08, SD103BW-TP, SD103BW_R1_00001) maintain the 350 mA current rating and are suitable for circuits designed for this specification. Upgraded current rating substitutes (MBR0530-TP, MBR0530L-TP, MBR0530T3G, NRVB0530T1G, PMEG3005EH,115) provide 500 mA capacity, offering higher current margin but with different forward voltage characteristics. Selection depends on circuit current requirements and thermal design.

Q: Can BAT48ZFILM replace SD103BW-13 in all applications?

A: BAT48ZFILM is electrically compatible for voltage rating (40 V exceeds 30 V requirement) and current rating (350 mA matches requirement). However, forward voltage is 750 mV @ 200 mA compared to 600 mV for the original part, resulting in higher power dissipation. This substitute is suitable for applications where the higher forward voltage and increased reverse leakage (25 µA @ 40 V vs. 5 µA @ 20 V) are acceptable.

Q: What is the significance of SOD-123F packaging versus SOD-123?

A: SOD-123F is a variant of the SOD-123 package with different dimensional specifications. PMEG3005EH,115 uses SOD-123F packaging. Verify PCB footprint compatibility before selecting this part. SOD-123 and SOD-123F are not mechanically interchangeable without footprint modification.

Q: Are all substitute parts RoHS compliant?

A: Yes. All recommended substitute parts carry ROHS3 compliance status. The original SD103BW-13 is RoHS non-compliant. Substitution with any recommended part improves regulatory compliance for new designs and manufacturing.

Q: Which substitute offers the best availability?

A: NRVB0530T1G (onsemi) has the highest inventory at 212,100 units in stock. This part provides 500 mA current rating, 30 V voltage rating, automotive qualification (AEC-Q101), and ROHS3 compliance.

Q: Can I use a 500 mA rated diode in a circuit designed for 350 mA?

A: Yes. A 500 mA rated diode can be used in a 350 mA circuit. The higher current rating provides design margin and does not create functional issues. Verify that thermal design and PCB layout accommodate the component without exceeding junction temperature limits.

Q: What is the difference between MBR0530-TP and MBR0530L-TP?

A: Both parts are 30 V, 500 mA Schottky diodes in SOD-123 packaging from Micro Commercial Co. MBR0530L-TP has lower forward voltage (430 mV @ 500 mA vs. 550 mV) and lower reverse leakage (130 µA @ 30 V vs. 200 µA), resulting in better efficiency and lower power dissipation. MBR0530L-TP is the preferred selection for thermal-sensitive applications.

Q: Is NRVB0530T1G suitable for automotive applications?

A: Yes. NRVB0530T1G carries automotive qualification (AEC-Q101) and is rated for -65°C to 125°C junction temperature operation. This part is suitable for automotive and industrial applications requiring qualified components.

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