D4KB80 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The D4KB80 is a single-phase bridge rectifier manufactured by Diodes Incorporated, rated for 800 V peak reverse voltage with 4 A average rectified current. This component is designed for medium to high power applications requiring full-wave rectification in through-hole configurations. The part is currently in active production status with 995 units in stock.

Bridge rectifiers of this specification are essential in power supply circuits, industrial equipment, and AC-to-DC conversion applications. Equivalent and substitute parts are identified when original stock becomes unavailable, when supply chain optimization is required, or when design flexibility permits component standardization across manufacturing facilities.

Substiute Parts

D4KB80

Diodes IncorporatedIn Stock: 1016D4KB80 Datasheet

Current PartRFQ

UR4KB80-B

Taiwan Semiconductor CorporationIn Stock: 6374UR4KB80-B Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the D4KB80 are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Electrical Parameters (Must Match Exactly):

• Voltage - Peak Reverse (Max): 800 V
• Current - Average Rectified (Io): 4 A
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 2 A
• Current - Reverse Leakage @ Vr: 10 µA @ 800 V
• Operating Temperature Range: -55°C to 150°C (TJ)

Mechanical Parameters (Must Match Exactly):

• Diode Type: Single Phase
• Technology: Standard
• Mounting Type: Through Hole
• Package / Case: 4-ESIP
• Supplier Device Package: D3K

Compliance Parameters (Must Match):

• RoHS3 Compliant
• REACH Unaffected
• ECCN: EAR99
• HTSUS: 8541.10.0080

The UR4KB80-B manufactured by Taiwan Semiconductor Corporation meets all specified electrical, mechanical, and compliance requirements and is therefore a direct parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: D4KB80 (Diodes Incorporated)

The D4KB80 is the original specified component with active production status and established supply chain integration. This part is suitable for new designs and ongoing production runs where the original manufacturer relationship is maintained.

Equivalent Alternative: UR4KB80-B (Taiwan Semiconductor Corporation)

The UR4KB80-B is a direct parametric equivalent meeting all electrical, mechanical, and regulatory requirements. This substitute is suitable for:

• Supply chain diversification to reduce single-source dependency
• Procurement optimization when Taiwan Semiconductor inventory availability exceeds Diodes Incorporated stock levels
• Design flexibility in applications where manufacturer interchangeability is permitted
• Compliance with procurement policies requiring multiple qualified sources

Both parts maintain identical electrical performance characteristics, identical thermal operating ranges, and identical regulatory compliance certifications. Both are in active production status. The selection between these two parts is determined by procurement requirements, supply chain strategy, and inventory availability rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can the UR4KB80-B be used as a direct replacement for the D4KB80 in existing designs?

A: Yes. The UR4KB80-B is a parametric equivalent with identical electrical ratings (800 V peak reverse, 4 A average rectified current), identical forward voltage characteristics, identical reverse leakage specifications, and identical operating temperature range. Both components use the 4-ESIP package (D3K) and are through-hole mounted. No circuit modifications are required.

Q: Are there any differences in thermal performance between these two parts?

A: No. Both parts operate across the identical temperature range of -55°C to 150°C (TJ). Thermal performance characteristics are equivalent.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the D4KB80 and UR4KB80-B are ROHS3 compliant, REACH unaffected, classified under ECCN EAR99, and share the same HTSUS code (8541.10.0080). Regulatory compliance is identical.

Q: Are the physical packages identical?

A: Yes. Both parts use the 4-ESIP package case with D3K supplier device package designation. PCB footprints and mounting requirements are identical. No layout modifications are necessary when substituting between these parts.

Q: What is the difference in available inventory?

A: The D4KB80 has 995 units in stock. The UR4KB80-B has 6315 units in stock. Inventory availability may influence procurement decisions when supply chain optimization is a consideration.

Q: Can these parts be mixed in the same production batch?

A: Yes. Both parts are functionally and electrically identical. Mixed sourcing from both manufacturers is permissible in applications where design specifications allow multiple qualified sources.

Q: What is the basis for determining these parts are equivalent?

A: Equivalence is established through exact matching of all specified electrical parameters (voltage, current, forward voltage, reverse leakage), operating temperature range, diode type, technology classification, mounting method, package designation, and regulatory compliance certifications. No parameter deviations exist between these two parts.