SDB204-TP Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The SDB204-TP is a single-phase bridge rectifier manufactured by Micro Commercial Co, rated for 400 V peak reverse voltage and 2 A average rectified current in a 4-SMD, Gull Wing surface mount package. This component is classified as Not For New Designs, indicating it has reached end-of-life status. Finding equivalent substitute parts is necessary for ongoing maintenance, repair, and legacy system support where the original component is no longer readily available or when design flexibility permits alternative sourcing.

Substiute Parts

SDB204-TP

Micro Commercial CoIn Stock: 2181SDB204-TP Datasheet

Current PartRFQ

DF1504S-G

Comchip TechnologyIn Stock: 1001DF1504S-G Datasheet

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DF1504ST-G

Comchip TechnologyIn Stock: 997DF1504ST-G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SDB204-TP must meet the following criteria to ensure functional compatibility:

• Single-phase bridge rectifier topology
• Voltage - Peak Reverse rating of 400 V
• Surface mount technology with 4-SMD, Gull Wing package configuration
• Operating temperature range of -55°C ~ 150°C (TJ)
• RoHS3 compliance and MSL 1 rating

The current rating of substitute parts may vary within acceptable limits for the application. The SDB204-TP is rated for 2 A average rectified current; substitute parts rated at 1.5 A represent a reduced current capacity and must be evaluated against circuit requirements. Forward voltage characteristics remain consistent across qualified substitutes at standard operating conditions.

Parameter Comparison

Engineering Selection Recommendations

DF1504S-G is the primary substitute for SDB204-TP. This part is manufactured by Comchip Technology with Active product status, ensuring ongoing availability and support. It maintains identical voltage ratings, temperature range, package configuration, and compliance certifications. The reduced current rating of 1.5 A versus 2 A requires circuit-level evaluation to confirm suitability for the intended application.

DF1504ST-G is an alternative substitute also manufactured by Comchip Technology with identical electrical and mechanical specifications to DF1504S-G. However, this part carries Obsolete product status, indicating limited future availability. Selection of DF1504ST-G should be considered only when DF1504S-G is unavailable and immediate supply is critical.

Both substitute parts maintain RoHS3 compliance and MSL 1 rating, consistent with the original SDB204-TP specification.

Frequently Asked Questions (FAQ)

Q: Can DF1504S-G directly replace SDB204-TP in all applications?

A: DF1504S-G is mechanically and electrically compatible with SDB204-TP in terms of package, voltage rating, temperature range, and compliance. The current rating difference (1.5 A versus 2 A) must be verified against circuit requirements. If the circuit operates at or near 2 A, DF1504S-G may not be suitable.

Q: What is the difference between DF1504S-G and DF1504ST-G?

A: Both parts share identical electrical specifications and package configuration. The primary distinction is product status: DF1504S-G is Active, while DF1504ST-G is Obsolete. DF1504S-G is the preferred choice for new sourcing due to availability assurance.

Q: Are there packaging differences between the main part and substitutes?

A: SDB204-TP is supplied in Tape & Reel (TR) packaging. DF1504S-G is supplied in Tube packaging. Both maintain the same 4-SMD, Gull Wing component package configuration suitable for surface mount assembly. Packaging format does not affect electrical or mechanical compatibility.

Q: Do the substitute parts meet the same compliance requirements?

A: Yes. Both DF1504S-G and DF1504ST-G are ROHS3 compliant with MSL 1 (Unlimited) rating, matching the SDB204-TP specification. REACH status is Unaffected for all three parts.

Q: What should be considered when selecting between available substitutes?

A: DF1504S-G is the recommended choice due to Active product status and assured long-term availability. DF1504ST-G should be selected only if DF1504S-G is unavailable, given its Obsolete classification. Current rating compatibility with the circuit design is the primary technical consideration for both options.