DB104S-HF Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DB104S-HF is a single-phase bridge rectifier diode manufactured by Comchip Technology, rated for 400 V peak reverse voltage and 1 A average rectified current. This component is designed for surface mount applications in 4-SMD, Gull Wing packaging. The part maintains Active product status with 997 pieces currently in stock.

Substitute parts become necessary when addressing inventory constraints, obsolescence of specific packaging variants, or when alternative manufacturers' components meet identical electrical and mechanical specifications. The parts listed below provide functional equivalence based on matching electrical parameters and mounting characteristics.

Substiute Parts

DB104S-HF

Comchip TechnologyIn Stock: 1011DB104S-HF Datasheet

Current PartRFQ

DB104S-G

Comchip TechnologyIn Stock: 1569DB104S-G Datasheet

Parametric EquivalentRFQ

DF04S-G

Comchip TechnologyIn Stock: 1502DF04S-G Datasheet

Parametric EquivalentRFQ

DF04S-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 5496DF04S-E3/45 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DB104S-HF is determined by the following critical parameters:

• Voltage - Peak Reverse (Max): 400 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)
• Mounting Type: Surface Mount
• Package / Case: 4-SMD, Gull Wing

All substitute parts listed below match these electrical and mechanical specifications. Variations in supplier device package designation (DBS versus DFS) and packaging format (Tube) do not affect functional equivalence when mounted in identical PCB footprints. Current - Reverse Leakage specifications may vary within acceptable limits for this application category.

Parameter Comparison

Engineering Selection Recommendations

DB104S-HF (Primary Selection)

The DB104S-HF maintains Active product status with established supply availability (997 pieces in stock). This part is the preferred selection for new designs and ongoing production requirements.

DF04S-E3/45 (Recommended Substitute)

The DF04S-E3/45 manufactured by Vishay General Semiconductor - Diodes Division is an Active product with the highest inventory level (5400 pieces in stock). This part meets all electrical specifications and carries ROHS3 compliance and REACH Unaffected status. The reverse leakage specification of 5 µA @ 400 V is superior to the main part specification of 10 µA @ 400 V, providing enhanced performance margin. This part is suitable for direct substitution in applications where Vishay components are acceptable.

DB104S-G (Alternative - Obsolete Status)

The DB104S-G is an Obsolete product from Comchip Technology with 1511 pieces available. While electrically equivalent, the obsolete status indicates this part is no longer in active production. Selection of this part should be limited to applications requiring existing inventory depletion or where long-term supply is not a consideration.

DF04S-G (Alternative - Obsolete Status)

The DF04S-G is an Obsolete product from Comchip Technology with 1425 pieces available. This part is electrically equivalent but carries obsolete status. Selection should be reserved for inventory management purposes only.

Frequently Asked Questions (FAQ)

Q: Can DF04S-E3/45 replace DB104S-HF in existing designs?

A: Yes. The DF04S-E3/45 meets all critical electrical parameters: 400 V peak reverse voltage, 1 A average rectified current, 1.1 V forward voltage at 1 A, and -55°C to 150°C operating temperature range. Both components use identical 4-SMD, Gull Wing surface mount packaging. The reverse leakage specification of 5 µA @ 400 V is superior to the 10 µA @ 400 V specification of the DB104S-HF.

Q: What is the difference between DBS and DFS supplier device packages?

A: DBS and DFS are supplier device package designations used by Comchip Technology and Vishay respectively. Both designations refer to the same physical 4-SMD, Gull Wing package configuration. The designation difference reflects manufacturer-specific nomenclature and does not affect PCB footprint compatibility or electrical performance.

Q: Why are DB104S-G and DF04S-G listed as Obsolete?

A: Obsolete status indicates these parts are no longer in active production by their respective manufacturers. While current inventory exists, future availability cannot be guaranteed. These parts should be selected only when existing stock depletion is the objective or when long-term supply commitments are not required.

Q: Are all substitute parts RoHS3 compliant?

A: The substitute parts DB104S-G, DF04S-G, and DF04S-E3/45 are all ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited) and REACH Unaffected status. Compliance information for the main part DB104S-HF is not provided in the available specifications.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. All listed parts use identical 4-SMD, Gull Wing surface mount packaging and are designed for the same PCB footprint. Electrical parameters are matched across all substitute parts, permitting direct substitution without circuit redesign.

Q: Which substitute part has the best availability?

A: The DF04S-E3/45 has the highest inventory level at 5400 pieces in stock. This part is also Active status, indicating ongoing production and long-term availability.