DB104G Bridge Rectifier Single Phase 400V 1A Equivalent & Substitute Parts

Part Overview

The DB104G is an active single-phase bridge rectifier manufactured by GeneSiC Semiconductor, rated for 400V peak reverse voltage and 1A average rectified current. This component is designed for through-hole mounting applications requiring standard rectification technology in industrial and power conversion circuits. The part is RoHS compliant and maintains unlimited moisture sensitivity level (MSL 1), making it suitable for standard storage and handling conditions.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter ranges while maintaining compatible mechanical form factors and mounting characteristics.

Substiute Parts

DB104G

GeneSiC SemiconductorIn Stock: 3456DB104G Datasheet

Current PartRFQ

DF204-G

Comchip TechnologyIn Stock: 2169DF204-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DB104G are identified based on the following critical parameters that determine functional equivalence:

Electrical Compatibility Criteria:

• Voltage - Peak Reverse (Max): 400V minimum requirement
• Diode Type: Single Phase configuration
• Technology: Standard rectification technology
• Operating Temperature Range: -55°C to 150°C (TJ)

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package / Case: 4-EDIP (0.321", 8.15mm) form factor

Current Rating Consideration: The DB104G specifies 1A average rectified current. Substitute parts with equal or higher current ratings (2A or greater) maintain backward compatibility in applications where the original 1A specification is required, as higher-rated components can operate safely at lower current levels within their thermal and electrical limits.

Compliance Baseline: All substitute parts must maintain RoHS compliance status and MSL 1 rating to ensure equivalent handling and environmental performance.

Parameter Comparison

Engineering Selection Recommendations

DB104G Selection: The DB104G remains the primary choice for applications requiring 1A average rectified current with 400V peak reverse voltage. GeneSiC Semiconductor manufacturing and RoHS compliance status support this selection for standard industrial rectification applications.

DF204-G Selection: The DF204-G from Comchip Technology serves as a functional substitute where the following conditions are met:

• Application current requirement does not exceed 2A average rectified current
• PCB layout and thermal management accommodate the higher current rating
• ROHS3 compliance status is acceptable for the application
• Comchip Technology device qualification is approved in the design documentation

The DF204-G maintains identical voltage ratings, forward voltage characteristics, reverse leakage specifications, operating temperature range, and mechanical form factor. The 2A current rating provides operational margin in applications originally designed for 1A operation.

Compliance Verification: Both parts maintain RoHS compliance and MSL 1 rating. The DF204-G includes REACH Unaffected status, providing additional regulatory documentation for certain applications.

Frequently Asked Questions (FAQ)

Q: Can DF204-G replace DB104G in a 1A application?

A: Yes. The DF204-G is rated for 2A average rectified current, which exceeds the 1A requirement of the original application. Higher current-rated bridge rectifiers operate safely at lower current levels. All other electrical parameters (voltage, forward drop, leakage, temperature range) are equivalent.

Q: Are the packages physically identical?

A: Yes. Both parts use the 4-EDIP (0.321", 8.15mm) package with through-hole mounting. PCB footprints and lead spacing are identical, allowing direct mechanical substitution without layout modification.

Q: What is the difference between RoHS and ROHS3 compliance?

A: Both designations indicate RoHS compliance. ROHS3 represents a more recent compliance verification or documentation standard. For component selection purposes, both parts meet RoHS requirements.

Q: Does the higher current rating of DF204-G affect thermal performance?

A: The forward voltage drop remains 1.1V at the respective rated currents. In a 1A application, the DF204-G operates below its maximum rating, resulting in lower power dissipation and improved thermal margin compared to operation at its 2A maximum rating.

Q: Are there inventory or lead time considerations?

A: DB104G inventory is 3440 pieces. DF204-G inventory is 2065 pieces. Both parts are listed as active products with new original stock available.

Q: Can DB104G be used where DF204-G is specified?

A: No. If an application is designed for 2A operation, the DB104G's 1A rating is insufficient. Component selection must match or exceed the application's current requirement.