DB104S-G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DB104S-G is a single-phase bridge rectifier manufactured by Comchip Technology, rated for 400 V peak reverse voltage and 1 A average rectified current in a 4-SMD surface mount package. The product status is obsolete, making identification of equivalent and substitute parts necessary for ongoing design support and procurement continuity. Substitute parts maintain identical electrical performance within the specified parameter range while offering active product status or alternative packaging configurations.

Substiute Parts

DB104S-G

Comchip TechnologyIn Stock: 1569DB104S-G Datasheet

Current PartRFQ

DB104S-HF

Comchip TechnologyIn Stock: 1011DB104S-HF Datasheet

MFR RecommendedRFQ

DF04S-G

Comchip TechnologyIn Stock: 1502DF04S-G Datasheet

Parametric EquivalentRFQ

DF04S-HF

Comchip TechnologyIn Stock: 754DF04S-HF Datasheet

Parametric EquivalentRFQ

DBLS104G C1G

Taiwan Semiconductor CorporationIn Stock: 1109DBLS104G C1G Datasheet

Parametric EquivalentRFQ

DBLS104GHC1G

Taiwan Semiconductor CorporationIn Stock: 1103DBLS104GHC1G Datasheet

Parametric EquivalentRFQ

DF04S-E3/45

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

Parametric EquivalentRFQ

DF04SA-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 807DF04SA-E3/45 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DB104S-G are grouped based on strict electrical and mechanical parameter equivalence. The primary substitution criteria are:

• 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 ~ 150°C (TJ)
• Mounting Type: Surface Mount
• Package / Case: 4-SMD, Gull Wing

Substitute parts are classified into two categories:

MFR Recommended Substitute: DB104S-HF (Comchip Technology) — identical electrical specifications with active product status.

Parametric Equivalents: DF04S-G, DF04S-HF (Comchip Technology); DBLS104G C1G, DBLS104GHC1G (Taiwan Semiconductor Corporation); DF04S-E3/45, DF04SA-E3/45 (Vishay General Semiconductor - Diodes Division) — all meet the core electrical parameters with variations in reverse leakage current and product status.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring direct replacement of the obsolete DB104S-G, the DB104S-HF (Comchip Technology) is the primary recommendation. This part maintains identical electrical specifications and reverse leakage characteristics while offering active product status and ROHS3 compliance.

For designs accepting alternative manufacturers, the DF04S-HF (Comchip Technology) provides equivalent performance with active availability. The DBLS104G C1G and DBLS104GHC1G (Taiwan Semiconductor Corporation) offer superior reverse leakage performance (2 µA versus 10 µA) and active product status. The DBLS104GHC1G variant includes AEC-Q101 automotive qualification for applications requiring automotive-grade components.

The DF04S-E3/45 and DF04SA-E3/45 (Vishay General Semiconductor - Diodes Division) are available in high-volume inventory and provide active product status with ROHS3 compliance. Reverse leakage is specified at 5 µA, intermediate between the Comchip and Taiwan Semiconductor options.

All substitute parts maintain the 4-SMD Gull Wing package configuration, surface mount mounting type, and -55°C to 150°C operating temperature range, ensuring PCB layout and thermal management compatibility.

Frequently Asked Questions (FAQ)

Q: Can DB104S-G be directly replaced with DB104S-HF?

A: Yes. DB104S-HF is the manufacturer-recommended substitute with identical electrical specifications, forward voltage, reverse leakage current, and operating temperature range. The primary difference is product status: DB104S-HF is active while DB104S-G is obsolete.

Q: What is the difference between Comchip and Vishay substitute parts?

A: All parts meet the core electrical requirements (400 V, 1 A, 1.1 V forward voltage). Differences exist in reverse leakage current: Comchip DB104S-HF and DF04S-HF specify 10 µA, Vishay DF04S-E3/45 and DF04SA-E3/45 specify 5 µA, and Taiwan Semiconductor DBLS variants specify 2 µA. These variations remain within acceptable limits for standard bridge rectifier applications.

Q: Are all substitute parts in the same package?

A: Yes. All substitute parts use the 4-SMD Gull Wing package configuration, ensuring compatibility with existing PCB layouts designed for DB104S-G.

Q: Which substitute part offers the best reverse leakage performance?

A: The DBLS104G C1G and DBLS104GHC1G (Taiwan Semiconductor Corporation) specify 2 µA reverse leakage at 400 V, the lowest among all listed substitutes. The DBLS104GHC1G variant includes AEC-Q101 automotive qualification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the compliance profile of the original DB104S-G.

Q: What is the difference between DF04S-E3/45 and DF04SA-E3/45?

A: Both parts are manufactured by Vishay General Semiconductor - Diodes Division with identical electrical specifications. The difference is in the base product number designation (DF04S versus DF04SA), but electrical performance and package configuration are equivalent.