SR506 Schottky Diode Equivalent & Substitute Parts

Part Overview

The SR506 is an active-status Schottky rectifier diode rated for 60 V DC reverse voltage and 5 A average rectified current in a DO-201AD axial through-hole package. This component is manufactured by Taiwan Semiconductor Corporation and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1). The SR506 serves as a fast-recovery rectifier in power conversion and switching applications where low forward voltage drop and rapid switching characteristics are required. Equivalent and substitute parts are identified based on matching or compatible electrical ratings and mechanical packaging specifications.

Key Parameters

Parameter	SR506 Value	Unit
Voltage - DC Reverse (Vr) (Max)	60	V
Current - Average Rectified (Io)	5	A
Voltage - Forward (Vf) (Max) @ If	700 mV @ 5 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	500 µA @ 60 V	µA
Operating Temperature - Junction	-55°C ~ 150°C	°C
Package / Case	DO-201AD, Axial	—
Mounting Type	Through Hole	—
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the SR506 are classified into two categories based on electrical parameter compatibility:

Parametric Equivalents match all critical electrical specifications: 60 V reverse voltage rating, 5 A average rectified current, fast recovery speed (≤ 500ns), and DO-201AD axial through-hole packaging. These parts are direct functional replacements with identical performance characteristics.

Direct Manufacturer Alternatives provide equivalent electrical performance with minor variations in forward voltage drop or reverse leakage current while maintaining the same voltage and current ratings, package type, and fast-recovery speed classification.

Similar Current-Rated Alternatives are rated for lower average rectified current (3 A instead of 5 A) but share the same 60 V reverse voltage rating, fast-recovery speed, DO-201AD package, and through-hole mounting. These parts are suitable for applications where the 5 A rating is not required.

The key parameters determining substitution eligibility are: Voltage - DC Reverse (Vr) (Max), Current - Average Rectified (Io), Speed classification, Package / Case type, and Mounting Type.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Speed	Ir @ Vr	Package	Temp Range	Packaging Type
SR506	Taiwan Semiconductor Corporation	60 V	5 A	700 mV @ 5 A	Fast Recovery ≤ 500ns	500 µA @ 60 V	DO-201AD	-55°C ~ 150°C	Tape & Reel (TR)
SR506 A0G	Taiwan Semiconductor Corporation	60 V	5 A	700 mV @ 5 A	Fast Recovery ≤ 500ns	500 µA @ 60 V	DO-201AD	-55°C ~ 150°C	Cut Tape (CT)
SB560	Good-Ark Semiconductor	60 V	5 A	670 mV @ 5 A	Fast Recovery ≤ 500ns	150 µA @ 60 V	DO-201AD	-55°C ~ 150°C	Cut Tape (CT) & Digi-Reel®
SB560-T	Diodes Incorporated	60 V	5 A	670 mV @ 5 A	Fast Recovery ≤ 500ns	500 µA @ 60 V	DO-201AD	-65°C ~ 150°C	Cut Tape (CT)
SB360-E3/54	Vishay General Semiconductor - Diodes Division	60 V	3 A	680 mV @ 3 A	Fast Recovery ≤ 500ns	500 µA @ 60 V	DO-201AD	-65°C ~ 150°C	Cut Tape (CT)
SB360-E3/73	Vishay General Semiconductor - Diodes Division	60 V	3 A	680 mV @ 3 A	Fast Recovery ≤ 500ns	500 µA @ 60 V	DO-201AD	-65°C ~ 150°C	Cut Tape (CT)
SR306-TP	Micro Commercial Co	60 V	3 A	720 mV @ 3 A	Fast Recovery ≤ 500ns	1 mA @ 60 V	DO-201AD	-55°C ~ 125°C	Cut Tape (CT)
STPS5L60	STMicroelectronics	60 V	5 A	520 mV @ 5 A	Fast Recovery ≤ 500ns	220 µA @ 60 V	DO-201AD	-55°C ~ 150°C	Cut Tape (CT)

Engineering Selection Recommendations

Parametric Equivalent (Identical Specifications): SR506 A0G is a parametric equivalent of SR506, differing only in packaging format (Cut Tape versus Tape & Reel). Both parts are manufactured by Taiwan Semiconductor Corporation, carry active product status, and are ROHS3 compliant. Selection between SR506 and SR506 A0G depends on supply chain requirements and packaging handling procedures.

Direct Manufacturer Alternatives (5 A Rating): SB560 (Good-Ark Semiconductor) and SB560-T (Diodes Incorporated) are direct alternatives rated for 60 V and 5 A with fast-recovery speed and DO-201AD packaging. Both maintain ROHS3 compliance and MSL 1 rating. SB560-T extends the operating temperature range to -65°C (minimum), providing broader thermal coverage. SB560 exhibits lower reverse leakage current (150 µA versus 500 µA at 60 V) and lower forward voltage drop (670 mV versus 700 mV at 5 A). STPS5L60 (STMicroelectronics) also provides 60 V / 5 A performance with notably lower forward voltage drop (520 mV at 5 A) and reduced reverse leakage (220 µA at 60 V), offering improved efficiency characteristics.

Similar Current-Rated Alternatives (3 A Rating): SB360-E3/54, SB360-E3/73 (Vishay General Semiconductor - Diodes Division), and SR306-TP (Micro Commercial Co) are rated for 60 V and 3 A. These parts are suitable for applications where the 5 A current rating of SR506 exceeds system requirements. All three maintain fast-recovery speed and DO-201AD axial through-hole packaging. SB360-E3/54 and SB360-E3/73 are functionally identical variants from Vishay with extended temperature range (-65°C minimum). SR306-TP operates within -55°C to 125°C range with higher reverse leakage current (1 mA at 60 V).

All substitute parts listed carry active product status and ROHS3 compliance, confirming current manufacturing availability and environmental regulatory alignment with the original SR506 specification.

Frequently Asked Questions (FAQ)

Q: Can SR506 A0G be used as a direct replacement for SR506? A: Yes. SR506 A0G is a parametric equivalent with identical electrical specifications (60 V, 5 A, 700 mV forward voltage, fast recovery ≤ 500ns). The only difference is packaging format: SR506 A0G is supplied in Cut Tape (CT) while SR506 is supplied in Tape & Reel (TR). Both are manufactured by Taiwan Semiconductor Corporation and carry identical performance ratings.

Q: What is the difference between SB560 and SB560-T? A: Both parts are rated for 60 V and 5 A with fast-recovery speed and DO-201AD packaging. SB560-T (Diodes Incorporated) extends the minimum operating temperature to -65°C compared to -55°C for SB560 (Good-Ark Semiconductor). SB560 exhibits lower reverse leakage current (150 µA versus 500 µA at 60 V) and identical forward voltage drop (670 mV at 5 A).

Q: Can 3 A rated parts (SB360-E3/54, SB360-E3/73, SR306-TP) replace the 5 A rated SR506? A: These 3 A parts are suitable only for applications where the circuit current requirement does not exceed 3 A. They share the same 60 V reverse voltage rating, fast-recovery speed, and DO-201AD package. Use of a lower current-rated part in a 5 A application will result in component overstress and failure.

Q: Which substitute part offers the lowest forward voltage drop? A: STPS5L60 (STMicroelectronics) provides the lowest forward voltage drop at 520 mV @ 5 A, compared to 700 mV for SR506 and 670 mV for SB560 and SB560-T. This lower forward voltage reduces power dissipation in high-current applications.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All substitute parts listed (SR506 A0G, SB560, SB560-T, SB360-E3/54, SB360-E3/73, SR306-TP, STPS5L60) carry ROHS3 compliance certification and MSL 1 (Unlimited) moisture sensitivity level, matching the environmental and regulatory status of the original SR506.

Q: What is the temperature range difference between SR506 and SB560-T? A: SR506 operates from -55°C to 150°C. SB560-T (Diodes Incorporated) extends the minimum operating temperature to -65°C while maintaining the same 150°C maximum. This extended range provides thermal margin for applications in cold environments.

Q: Can STPS5L60 be used in all SR506 applications? A: STPS5L60 is electrically compatible with SR506 (60 V, 5 A, fast recovery, DO-201AD package). The primary advantage is lower forward voltage drop (520 mV versus 700 mV at 5 A), which reduces power dissipation. Operating temperature range is identical (-55°C to 150°C). Substitution is valid for all SR506 applications.

Q: What is the difference in reverse leakage current between substitute parts? A: Reverse leakage current at 60 V varies: SR506 and SB560-T: 500 µA; SB560: 150 µA; SB360-E3/54 and SB360-E3/73: 500 µA; SR306-TP: 1 mA; STPS5L60: 220 µA. Lower leakage current reduces standby power consumption and improves circuit efficiency.

Q: Are all substitute parts available in DO-201AD axial through-hole package? A: Yes. All substitute parts listed are packaged in DO-201AD axial through-hole format, ensuring mechanical and electrical compatibility with SR506 PCB footprints and assembly processes.

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