DF04S2 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DF04S2 is a single-phase bridge rectifier manufactured by onsemi, rated for 400 V peak reverse voltage and 2 A average rectified current. This component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing design support and procurement continuity. The DF04S2 operates across a wide temperature range of -55°C to 150°C and is packaged in a 4-SMD, Gull Wing surface mount configuration. Locating functionally equivalent alternatives ensures design flexibility and supply chain resilience for applications requiring this rectification topology.

Substiute Parts

DF04S2

onsemiIn Stock: 845DF04S2 Datasheet

Current PartRFQ

DF204ST-G

Comchip TechnologyIn Stock: 16120DF204ST-G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DF04S2 are identified based on strict electrical and mechanical parameter matching. The following criteria define substitution eligibility:

• Voltage Rating: Peak reverse voltage must equal 400 V
• Current Rating: Average rectified current must equal 2 A
• Forward Voltage: Maximum forward voltage at rated current must not exceed 1.1 V @ 2 A
• Diode Configuration: Single-phase bridge rectifier topology
• Technology: Standard rectifier technology
• Temperature Range: Operating range must encompass -55°C to 150°C
• Mounting: Surface mount configuration required
• Package Compatibility: 4-SMD, Gull Wing package footprint

The DF204ST-G from Comchip Technology meets all substitution criteria and is classified as a parametric equivalent. While packaging format differs (Tape & Reel versus Cut Tape), the electrical specifications and physical footprint remain compatible for direct circuit substitution.

Parameter Comparison

Engineering Selection Recommendations

The DF04S2 is classified as obsolete. The DF204ST-G from Comchip Technology is a direct parametric equivalent meeting all electrical and mechanical specifications. Both components are ROHS3 compliant and REACH unaffected, ensuring regulatory alignment for current manufacturing standards.

The primary distinction between these parts is reverse leakage current: the DF04S2 specifies 3 µA @ 400 V, while the DF204ST-G specifies 10 µA @ 400 V. This difference remains within acceptable tolerances for standard bridge rectifier applications and does not compromise functional equivalence.

Packaging format differs between the original part (Cut Tape) and the substitute (Tape & Reel), but both maintain identical 4-SMD, Gull Wing footprints suitable for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the DF204ST-G replace the DF04S2 in existing designs?

A: Yes. The DF204ST-G meets all electrical and mechanical substitution criteria, including voltage rating, current rating, forward voltage characteristics, temperature range, and package footprint. Direct circuit substitution is supported.

Q: What is the significance of the reverse leakage current difference?

A: The DF204ST-G exhibits higher reverse leakage current (10 µA versus 3 µA at 400 V). This difference is typical among standard rectifier technologies from different manufacturers and remains within acceptable operating margins for bridge rectifier applications.

Q: Are there packaging considerations for assembly?

A: Both components use identical 4-SMD, Gull Wing surface mount packages. The primary difference is supply format: DF04S2 is supplied in Cut Tape, while DF204ST-G is supplied in Tape & Reel. Assembly equipment compatibility remains unchanged.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the DF04S2 and DF204ST-G are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component manufacturing and use.

Q: What is the operating temperature range for both parts?

A: Both components operate across -55°C to 150°C junction temperature, providing equivalent thermal performance across industrial and commercial application ranges.