DF1510ST-G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DF1510ST-G is a single-phase bridge rectifier manufactured by Comchip Technology, rated for 1 kV peak reverse voltage and 1.5 A average rectified current. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design support and procurement. The part operates across the temperature range of -55°C to 150°C and is packaged in a 4-SMD Gull Wing surface mount configuration (DFS package). ROHS3 compliance and unlimited moisture sensitivity level (MSL 1) are maintained across all qualified substitutes.

Key Parameters

Parameter	Value	Unit
Voltage - Peak Reverse (Max)	1	kV
Current - Average Rectified (Io)	1.5	A
Voltage - Forward (Vf) (Max) @ If	1.1	V @ 1.5 A
Current - Reverse Leakage @ Vr	10	µA @ 1000 V
Operating Temperature Range	-55 to 150	°C (TJ)
Mounting Type	Surface Mount	—
Package / Case	4-SMD, Gull Wing	—
Diode Type	Single Phase	—
Technology	Standard	—

Substitute Part Grouping Explanation

Substitution of the DF1510ST-G is determined by strict equivalence across the following critical parameters:

Voltage - Peak Reverse (Max): 1 kV
Current - Average Rectified (Io): 1.5 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1.5 A
Operating Temperature Range: -55°C to 150°C (TJ)
Mounting Type: Surface Mount
Package / Case: 4-SMD, Gull Wing
Diode Type: Single Phase
Technology: Standard

Parts are grouped into two categories: MFR Recommended (direct manufacturer alternative with identical specifications) and Parametric Equivalents (functionally equivalent across all critical electrical parameters, with minor variations in reverse leakage current or packaging format).

Parameter Comparison

Part Number	Manufacturer	Vr (Max) kV	Io (A)	Vf (Max) V @ If	Ir (Max) µA @ Vr	Temp Range °C	Package	Status
DF1510ST-G	Comchip Technology	1	1.5	1.1 @ 1.5 A	10 @ 1000 V	-55 to 150	4-SMD, Gull Wing (DFS)	Obsolete
DF1510S-G	Comchip Technology	1	1.5	1.1 @ 1.5 A	10 @ 1000 V	-55 to 150	4-SMD, Gull Wing (DFS)	Active
ABS10B-13	Diodes Incorporated	1	1.5	1.1 @ 1.5 A	5 @ 1000 V	-55 to 150	4-SMD, Gull Wing (4-SOPA)	Active
DB157S	MDD	1	1.5	1.0 @ 1.5 A	1 @ 1000 V	-55 to 150	4-SMD, Gull Wing (DBS)	Active
DBLS157G	Taiwan Semiconductor Corporation	1	1.5	1.1 @ 1.5 A	2 @ 1000 V	-55 to 150	4-SMD, Gull Wing (DBLS)	Active
DBLS157GH	Taiwan Semiconductor Corporation	1	1.5	1.1 @ 1.5 A	2 @ 1000 V	-55 to 150	4-SMD, Gull Wing (DBLS)	Active
DF10S	Good-Ark Semiconductor	1	1.0	1.1 @ 500 mA	5 @ 1000 V	-55 to 150	4-SMD, Gull Wing (DFS)	Active
DF1510S	HY Electronic (Cayman) Limited	1	1.5	1.1 @ 1.5 A	10 @ 1000 V	-55 to 150	4-SMD, Gull Wing (DFS)	Active
DF1510S-E3/77	Vishay General Semiconductor - Diodes Division	1	1.5	1.1 @ 1.5 A	5 @ 1000 V	-55 to 150	4-SMD, Gull Wing (DFS)	Active
DFL1510S-E3/77	Vishay General Semiconductor - Diodes Division	1	1.5	1.1 @ 1.5 A	5 @ 1000 V	-55 to 150	4-SMD, Gull Wing (DFS)	Active
SDB157-TP	Micro Commercial Co	1	1.5	1.1 @ 1.5 A	10 @ 1000 V	-55 to 150	4-SMD, Gull Wing (SDB-1)	Active

Engineering Selection Recommendations

Primary Recommendation: DF1510S-G

DF1510S-G is the MFR recommended substitute from Comchip Technology, the original manufacturer. This part maintains identical electrical specifications and packaging to the obsolete DF1510ST-G while carrying Active product status. ROHS3 compliance and unlimited MSL rating are confirmed. This selection eliminates design re-qualification risk.

Secondary Recommendations: Full Parametric Equivalents

The following parts are parametric equivalents with Active status and ROHS3 compliance:

DF1510S-E3/77 (Vishay General Semiconductor - Diodes Division): Identical specifications with 27,097 units in stock. Cut Tape & Digi-Reel packaging available.
DFL1510S-E3/77 (Vishay General Semiconductor - Diodes Division): Identical specifications with 2,953 units in stock. Cut Tape & Digi-Reel packaging available.
DBLS157G (Taiwan Semiconductor Corporation): Meets all electrical requirements with improved reverse leakage performance (2 µA vs. 10 µA). Tape & Reel packaging. 1,770 units in stock.
DBLS157GH (Taiwan Semiconductor Corporation): Automotive-grade equivalent with AEC-Q101 qualification. Identical electrical specifications to DBLS157G. 3,863 units in stock. Suitable for automotive applications.
SDB157-TP (Micro Commercial Co): Meets all electrical requirements. Tape & Reel packaging. 1,529 units in stock.
ABS10B-13 (Diodes Incorporated): Meets all electrical requirements with improved reverse leakage performance (5 µA vs. 10 µA). Tape & Reel packaging. 10,100 units in stock.
DB157S (MDD): Meets all electrical requirements with superior reverse leakage performance (1 µA vs. 10 µA) and lower forward voltage (1.0 V vs. 1.1 V). 10,200 units in stock.

Not Recommended: DF10S

DF10S is rated for 1.0 A average rectified current, below the 1.5 A requirement of the DF1510ST-G. This part is unsuitable for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can DF1510S-G be used as a direct replacement for DF1510ST-G?

A: Yes. DF1510S-G is the MFR recommended substitute from Comchip Technology with identical electrical specifications, operating temperature range, and 4-SMD Gull Wing packaging. The primary difference is product status: DF1510S-G is Active while DF1510ST-G is Obsolete.

Q: What is the difference between parametric equivalents and the MFR recommended substitute?

A: The MFR recommended substitute (DF1510S-G) is provided by the original manufacturer and carries identical specifications. Parametric equivalents meet all critical electrical requirements (1 kV, 1.5 A, -55°C to 150°C) but may be sourced from different manufacturers or have minor variations in reverse leakage current or packaging format.

Q: Are all substitute parts ROHS3 compliant?

A: All recommended substitute parts carry ROHS3 compliance status. Verify REACH status with your supplier for specific applications.

Q: Can I use DBLS157GH instead of DF1510ST-G in non-automotive applications?

A: Yes. DBLS157GH meets all electrical and thermal requirements for the DF1510ST-G. The automotive-grade designation and AEC-Q101 qualification indicate enhanced reliability screening but do not restrict use in non-automotive circuits.

Q: What is the significance of reverse leakage current differences among substitutes?

A: Reverse leakage current (Ir) indicates the small current flowing through the diode in reverse bias. Lower values (1-5 µA) indicate superior leakage performance compared to the original specification (10 µA). Parts with lower reverse leakage may provide improved circuit performance in high-impedance applications but are fully compatible with designs specified for 10 µA.

Q: Why is DF10S not recommended as a substitute?

A: DF10S is rated for 1.0 A average rectified current, which is below the 1.5 A specification of DF1510ST-G. Using an undersized component creates risk of thermal stress and reduced circuit reliability.

Q: What packaging formats are available among the substitute parts?

A: All substitute parts maintain the 4-SMD Gull Wing surface mount package required for DF1510ST-G compatibility. Packaging variations (DFS, DBS, DBLS, SDB-1, 4-SOPA) are supplier-specific designations for the same physical form factor. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel formats are available for high-volume procurement.

Q: Are there inventory considerations when selecting a substitute?

A: Yes. Current inventory levels vary significantly: DB157S and ABS10B-13 offer the highest availability (10,200 and 10,100 units respectively), while DFL1510S-E3/77 has the lowest (2,953 units). Verify supplier stock status for your procurement timeline.

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