DB104SP-HF Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DB104SP-HF is a single-phase bridge rectifier manufactured by Comchip Technology, designed for 400 V peak reverse voltage applications with 1 A average rectified current capacity. This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing design support and procurement continuity. The part is housed in a 4-SMD, Gull Wing surface mount package suitable for automated assembly processes.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	400 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A
Current - Reverse Leakage @ Vr	10 µA @ 400 V
Operating Temperature Range	-55°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
Supplier Device Package	DBS

Substitute Part Grouping Explanation

Substitution of the DB104SP-HF is determined by electrical and mechanical parameter equivalence across the following criteria:

Primary Substitution Criteria:

Diode Type: Single Phase bridge rectifier configuration
Voltage Rating: 400 V peak reverse voltage (Vrrm)
Current Rating: 1 A average rectified current (Io)
Forward Voltage: 1.1 V maximum at 1 A
Reverse Leakage: 10 µA at 400 V
Temperature Range: -55°C to 150°C operating capability
Package Type: 4-SMD, Gull Wing surface mount configuration
Device Package: DBS supplier package designation

The primary manufacturer-recommended substitute is DB104S-HF, which maintains identical electrical specifications and package configuration while offering active product status. Secondary substitutes (DF04S-E3/45, DB104S-G, DF04S-G) are listed as compatible alternatives meeting the same parameter requirements.

Parameter Comparison

Parameter	DB104SP-HF (Main)	DB104S-HF (Primary Substitute)	DF04S-E3/45	DB104S-G	DF04S-G
Manufacturer	Comchip Technology	Comchip Technology	Comchip Technology	Comchip Technology	Comchip Technology
Diode Type	Single Phase	Single Phase	Single Phase	Single Phase	Single Phase
Technology	Standard	Standard	Standard	Standard	Standard
Voltage - Peak Reverse (Max)	400 V	400 V	400 V	400 V	400 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A
Current - Reverse Leakage @ Vr	10 µA @ 400 V	10 µA @ 400 V	10 µA @ 400 V	10 µA @ 400 V	10 µA @ 400 V
Operating Temperature	-55°C ~ 150°C	-55°C ~ 150°C (TJ)	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing
Supplier Device Package	DBS	DBS	DBS	DBS	DBS
Product Status	Obsolete	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Recommendation: DB104S-HF

The DB104S-HF is the manufacturer-recommended direct substitute for the obsolete DB104SP-HF. This part maintains complete electrical and mechanical equivalence across all specified parameters while offering active product status and improved supply chain availability. The transition from DB104SP-HF to DB104S-HF requires no circuit modifications or design changes.

Secondary Alternatives: DF04S-E3/45, DB104S-G, DF04S-G

These substitute parts are listed as compatible alternatives by the manufacturer and meet all electrical and mechanical requirements specified for the DB104SP-HF. Selection among these alternatives is determined by procurement availability, lead time requirements, and inventory status rather than technical performance differences.

Compliance and Certification

All substitute parts carry identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications, ensuring regulatory compliance equivalence for export and tariff purposes.

Frequently Asked Questions (FAQ)

Q: Can DB104S-HF be used as a direct replacement for DB104SP-HF without circuit modifications?

A: Yes. The DB104S-HF maintains identical electrical specifications (400 V peak reverse voltage, 1 A average rectified current, 1.1 V forward voltage, 10 µA reverse leakage) and mechanical configuration (4-SMD, Gull Wing package, DBS supplier package). No circuit design changes are required.

Q: What is the difference between DB104SP-HF and DB104S-HF?

A: The primary difference is product status. DB104SP-HF is classified as obsolete, while DB104S-HF is active. All electrical parameters and package specifications are identical.

Q: Are DF04S-E3/45, DB104S-G, and DF04S-G interchangeable with DB104SP-HF?

A: These parts meet the same electrical and mechanical specifications as DB104SP-HF and are listed as manufacturer-approved substitutes. They are interchangeable from a functional standpoint within the specified parameter range.

Q: What parameters must remain constant when selecting a substitute for DB104SP-HF?

A: The following parameters must match: 400 V peak reverse voltage, 1 A average rectified current, 1.1 V forward voltage at 1 A, 10 µA reverse leakage at 400 V, -55°C to 150°C operating temperature range, single-phase bridge rectifier configuration, and 4-SMD Gull Wing surface mount package.

Q: Does the package designation "DBS" affect substitution compatibility?

A: The DBS package designation is the supplier device package identifier for the 4-SMD, Gull Wing configuration. All listed substitutes use the same DBS package, ensuring mechanical and electrical compatibility in PCB assembly.

Q: Are there any temperature derating considerations when substituting DB104SP-HF?

A: All substitute parts operate across the same temperature range (-55°C to 150°C). No additional derating is required when transitioning from DB104SP-HF to any of the listed substitutes.

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