DF10ST-HF Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DF10ST-HF is a single-phase bridge rectifier diode manufactured by Comchip Technology, rated for 1 kV peak reverse voltage and 1 A average rectified current. This component is classified as obsolete, indicating discontinuation from the manufacturer. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for applications utilizing this bridge rectifier topology.

Key Parameters

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

Substitute Part Grouping Explanation

Substitute parts for the DF10ST-HF are selected based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

Electrical Parameters:

Voltage - Peak Reverse (Max): 1 kV
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A
Operating Temperature Range: -55°C ~ 150°C (TJ)
Diode Type: Single Phase
Technology: Standard

Mechanical Parameters:

Mounting Type: Surface Mount
Package / Case: 4-SMD, Gull Wing

Substitute parts are grouped into two categories: the manufacturer-recommended direct replacement (DF10S-HF) and parametric equivalents from alternative manufacturers. All listed substitutes maintain identical electrical performance specifications and physical mounting characteristics, enabling direct functional replacement in circuit applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Peak Reverse (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Current - Reverse Leakage @ Vr	Operating Temperature	Product Status	Package / Case
DF10ST-HF	Comchip Technology	1 kV	1 A	1.1 V @ 1 A	10 µA @ 1000 V	-55°C ~ 150°C	Obsolete	4-SMD, Gull Wing
DF10S-HF	Comchip Technology	1 kV	1 A	1.1 V @ 1 A	10 µA @ 1000 V	-55°C ~ 150°C	Active	4-SMD, Gull Wing
ABS10-HF	Comchip Technology	1 kV	1 A	1.1 V @ 1 A	5 µA @ 1000 V	-55°C ~ 150°C	Active	4-SMD, Gull Wing
ABS10A-13	Diodes Incorporated	1 kV	1 A	1.1 V @ 1 A	5 µA @ 1000 V	-55°C ~ 150°C	Active	4-SMD, Gull Wing
ABS10U	SMC Diode Solutions	1 kV	1 A	1.1 V @ 1 A	5 µA @ 1000 V	-55°C ~ 150°C	Active	4-SMD, Gull Wing
B1010S_R2_00001	Panjit International Inc.	1 kV	1 A	1.1 V @ 1 A	5 µA @ 1000 V	-55°C ~ 150°C	Active	4-SMD, Gull Wing
DB107S	MDD	1 kV	1 A	1.1 V @ 1 A	10 µA @ 1000 V	-55°C ~ 150°C	Active	4-SMD, Gull Wing
DBLS107GH	Taiwan Semiconductor Corporation	1 kV	1 A	1.1 V @ 1 A	2 µA @ 1000 V	-55°C ~ 150°C	Active	4-SMD, Gull Wing
DF10S-E3/77	Vishay General Semiconductor - Diodes Division	1 kV	1 A	1.1 V @ 1 A	5 µA @ 1000 V	-55°C ~ 150°C	Active	4-SMD, Gull Wing
DF10S1	Fairchild Semiconductor	1 kV	1 A	1.1 V @ 1 A	3 µA @ 1 V	-55°C ~ 150°C	Active	4-SMD, Gull Wing

Engineering Selection Recommendations

Primary Recommendation: DF10S-HF

The DF10S-HF from Comchip Technology is the manufacturer-recommended replacement for the obsolete DF10ST-HF. This part maintains identical electrical specifications and package configuration. The DF10S-HF carries Active product status with 984 units in stock, ensuring supply availability. This selection eliminates any design modification requirements and provides direct functional compatibility.

Secondary Recommendations: Parametric Equivalents

For applications requiring alternative sourcing or higher inventory availability, the following parametric equivalents provide identical electrical performance within the specified operating parameters:

ABS10-HF (Comchip Technology): Active status with 15,262 units available. ROHS3 compliant with MSL 1 rating.
ABS10A-13 (Diodes Incorporated): Active status with 20,206 units available. ROHS3 compliant with MSL 1 rating.
DF10S-E3/77 (Vishay General Semiconductor): Active status with 26,100 units available. ROHS3 compliant with MSL 1 rating.
DB107S (MDD): Active status with 44,552 units available. ROHS3 compliant with MSL 1 rating.

Specialized Application: DBLS107GH

The DBLS107GH from Taiwan Semiconductor Corporation is qualified to AEC-Q101 automotive standards and carries automotive-grade designation. This part is suitable for applications requiring automotive qualification. Current - Reverse Leakage is 2 µA @ 1000 V, representing superior leakage performance compared to the original part.

All recommended substitutes maintain the 4-SMD, Gull Wing package configuration and operate across the -55°C to 150°C temperature range, ensuring mechanical and thermal compatibility with existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can DF10S-HF directly replace DF10ST-HF without PCB modification?

A: Yes. The DF10S-HF maintains identical electrical specifications (1 kV, 1 A, 1.1 V forward voltage) and physical package (4-SMD, Gull Wing). No circuit design changes or PCB layout modifications are required.

Q: What is the difference between the original DF10ST-HF and the recommended DF10S-HF?

A: Both parts share identical electrical parameters and package specifications. The primary difference is product status: DF10ST-HF is obsolete, while DF10S-HF is active with current manufacturing support and supply availability.

Q: Are all listed substitute parts interchangeable?

A: All substitute parts listed maintain the core electrical specifications (1 kV peak reverse voltage, 1 A average rectified current, 1.1 V forward voltage) and 4-SMD, Gull Wing package configuration. Reverse leakage current varies among manufacturers (ranging from 2 µA to 10 µA @ 1000 V), but all values remain within acceptable operating parameters for standard bridge rectifier applications.

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

A: Reverse leakage current indicates the small current flowing through the diode in reverse bias condition. Lower leakage (2-5 µA) represents superior performance and is beneficial in high-impedance circuits. The original DF10ST-HF specifies 10 µA leakage. Substitutes with lower leakage (ABS10-HF, ABS10A-13, DF10S-E3/77, DBLS107GH) provide equivalent or improved performance.

Q: Which substitute offers the best availability?

A: DB107S from MDD provides the highest inventory level with 44,552 units in stock. DF10S-E3/77 from Vishay offers 26,100 units. Both parts maintain active product status and full electrical compatibility.

Q: Is DBLS107GH suitable for non-automotive applications?

A: Yes. DBLS107GH meets all electrical and mechanical requirements for standard bridge rectifier applications. The AEC-Q101 automotive qualification is an additional certification that does not restrict use in non-automotive designs. This part offers superior reverse leakage performance (2 µA) compared to the original specification.

Q: What packaging options are available for these substitutes?

A: Most substitutes are available in Tape & Reel (TR) packaging for automated assembly. DF10S-HF and DB107S are available without specified packaging restrictions. DF10S-E3/77 is supplied in Cut Tape (CT) & Digi-Reel format. Verify packaging requirements with your procurement process before final selection.

Q: Are all substitutes RoHS3 compliant?

A: All active substitute parts listed carry RoHS3 compliance certification, meeting current environmental and material restriction requirements for electronic components.

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