DB103S-HF Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DB103S-HF is a single-phase bridge rectifier diode manufactured by Comchip Technology, rated for 200 V peak reverse voltage and 1 A average rectified current. This component is classified as Active product status and is designed for surface mount applications in 4-SMD, Gull Wing package configuration. Bridge rectifier diodes are essential components in AC-to-DC power conversion circuits, and equivalent substitutes are identified based on matching electrical specifications and mechanical compatibility to support procurement flexibility and supply chain continuity.

Substiute Parts

DB103S-HF

Comchip TechnologyIn Stock: 933DB103S-HF Datasheet

Current PartRFQ

DF02S-E3/77

Vishay General Semiconductor - Diodes DivisionIn Stock: 30318DF02S-E3/77 Datasheet

Parametric EquivalentRFQ

DF02S1

Fairchild SemiconductorIn Stock: 10255DF02S1 Datasheet

Parametric EquivalentRFQ

DF02SA-E3/77

Vishay General Semiconductor - Diodes DivisionIn Stock: 2131DF02SA-E3/77 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DB103S-HF are qualified based on the following electrical and mechanical parameters:

Electrical Matching Criteria:

• Diode Type: Single Phase
• Technology: Standard
• Voltage - Peak Reverse (Max): 200 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A
• Operating Temperature Range: -55°C to 150°C (TJ)

Mechanical Matching Criteria:

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

All identified substitute parts meet or exceed these core parameters, ensuring functional and mechanical interchangeability in applications designed for the DB103S-HF. Variations in reverse leakage current and packaging format (Cut Tape, Tape & Reel, or Bulk) do not affect electrical performance within the specified operating conditions.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are Active product status components, ensuring continued manufacturer support and availability. Selection among the qualified substitutes should be based on the following factors:

Compliance & Certifications:

• DF02S-E3/77 and DF02SA-E3/77 (Vishay) carry ROHS3 compliance and REACH Unaffected status with Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating superior environmental and regulatory alignment for applications requiring compliance documentation.
• DF02S1 (Fairchild) meets the same electrical specifications without documented compliance certifications in the provided parameters.

Inventory & Packaging Availability:

• DF02S-E3/77 offers the highest inventory level (30,300 Pcs) in Cut Tape and Digi-Reel packaging, suitable for high-volume production environments.
• DF02SA-E3/77 provides Tape & Reel packaging (2,100 Pcs available) for automated assembly processes.
• DF02S1 is available in Bulk packaging (10,200 Pcs) for applications with flexible packaging requirements.

Reverse Leakage Performance:

• DF02S1 exhibits the lowest reverse leakage current (3 µA @ 200 V), followed by Vishay parts (5 µA @ 200 V), compared to the DB103S-HF (10 µA @ 200 V). Lower leakage improves efficiency in low-current or high-impedance circuit applications.

Frequently Asked Questions (FAQ)

Q: Can DF02S-E3/77, DF02SA-E3/77, and DF02S1 be used interchangeably with DB103S-HF?

A: Yes. All three substitute parts meet the core electrical specifications (200 V peak reverse voltage, 1 A average rectified current, 1.1 V forward voltage drop at 1 A, and -55°C to 150°C operating temperature range) and share identical mechanical packaging (4-SMD, Gull Wing surface mount). They are functionally equivalent for applications designed for the DB103S-HF.

Q: What is the difference between DF02S-E3/77 and DF02SA-E3/77?

A: Both parts are manufactured by Vishay and share identical electrical specifications and compliance certifications (ROHS3, REACH Unaffected, MSL 1). The primary difference is packaging format: DF02S-E3/77 is supplied in Cut Tape and Digi-Reel format, while DF02SA-E3/77 is supplied in Tape & Reel format. Selection depends on assembly equipment compatibility and production volume requirements.

Q: Why does DF02S1 show lower reverse leakage current than the DB103S-HF?

A: Reverse leakage current variation (3 µA for DF02S1 versus 10 µA for DB103S-HF) reflects manufacturing process differences between Fairchild and Comchip. Both values remain within acceptable limits for standard bridge rectifier applications. Lower leakage improves efficiency in circuits sensitive to standby current or high-impedance conditions.

Q: Are there compliance or regulatory differences between these substitutes?

A: DF02S-E3/77 and DF02SA-E3/77 (Vishay) include documented ROHS3 compliance and REACH Unaffected status with MSL 1 (Unlimited) ratings. DF02S1 (Fairchild) meets the same electrical specifications; compliance documentation is not provided in the available parameters. Applications requiring formal compliance certification should prioritize Vishay parts.

Q: Which substitute offers the best inventory availability?

A: DF02S-E3/77 (Vishay) provides the highest inventory level at 30,300 Pcs in Cut Tape and Digi-Reel packaging, supporting high-volume production schedules. DF02S1 (Fairchild) offers 10,200 Pcs in Bulk packaging, and DF02SA-E3/77 (Vishay) provides 2,100 Pcs in Tape & Reel format.

Q: Can I mix packaging formats (Cut Tape, Tape & Reel, Bulk) in the same production run?

A: Packaging format does not affect electrical performance or mechanical compatibility. However, assembly equipment compatibility and inventory management practices should guide packaging selection. Mixing formats within a single production run requires coordination with assembly operations to prevent process delays.