US5DB-HF General Purpose Rectifier Diode Equivalent & Substitute Parts

Part Overview

The US5DB-HF is an active general purpose rectifier diode manufactured by Comchip Technology, designed for surface mount applications in the DO-214AA (SMB) package. This component operates at 200 V DC reverse voltage with a 5 A average rectified current rating and features fast recovery characteristics with a 50 ns reverse recovery time. The part is RoHS3 compliant and carries an MSL rating of 1 (Unlimited), indicating minimal moisture sensitivity.

Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining electrical and mechanical compatibility within the specified parameter envelope.

Substiute Parts

US5DB-HF

Comchip TechnologyIn Stock: 1029US5DB-HF Datasheet

Current PartRFQ

ES5DB

MDDIn Stock: 3844ES5DB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the US5DB-HF are identified based on strict electrical and mechanical parameter matching within the general purpose rectifier diode category. The substitution criteria are:

Primary Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 200 V
• Current - Average Rectified (Io): 5 A
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 5 A
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Operating Temperature - Junction: -55°C to 150°C
• RoHS Status: ROHS3 Compliant

The ES5DB manufactured by MDD meets all primary matching parameters and is classified as a parametric equivalent. Both parts operate within identical voltage and current specifications, share the same surface mount package configuration, and comply with the same environmental and regulatory standards.

Parameter Comparison

Engineering Selection Recommendations

Both the US5DB-HF and ES5DB are active products with ROHS3 compliance and identical primary electrical specifications. Selection between these parts is based on the following engineering considerations:

US5DB-HF (Comchip Technology):

• Reverse recovery time of 50 ns
• Reverse leakage current of 5 µA @ 200 V
• Current inventory: 1012 pieces
• Established supply chain through Comchip Technology

ES5DB (MDD):

• Reverse recovery time of 35 ns (15 ns faster than US5DB-HF)
• Reverse leakage current of 10 µA @ 200 V (within acceptable tolerance)
• Current inventory: 3810 pieces
• Higher stock availability
• REACH Unaffected status provided

Both parts are suitable for direct substitution in applications requiring 200 V, 5 A general purpose rectification with fast recovery characteristics in the DO-214AA surface mount package. The ES5DB offers improved reverse recovery performance and greater inventory availability. Selection should be based on application-specific performance requirements, supply chain preferences, and inventory status.

Frequently Asked Questions (FAQ)

Q: Can the ES5DB be used as a direct replacement for the US5DB-HF in existing designs?

A: Yes. Both parts meet identical voltage (200 V), current (5 A), forward voltage (1 V @ 5 A), and package specifications (DO-214AA, SMB). Both are fast recovery diodes with operating temperature ranges of -55°C to 150°C and RoHS3 compliance. The ES5DB features a faster reverse recovery time (35 ns vs. 50 ns), which is a performance advantage in switching applications.

Q: What are the differences in reverse recovery time between these parts?

A: The US5DB-HF has a reverse recovery time (trr) of 50 ns, while the ES5DB has a trr of 35 ns. The ES5DB's faster recovery time reduces switching losses and may improve efficiency in high-frequency switching applications. Both parts meet the fast recovery classification of ≤ 500ns for currents > 200mA.

Q: Are there differences in reverse leakage current?

A: The US5DB-HF specifies 5 µA @ 200 V reverse leakage, while the ES5DB specifies 10 µA @ 200 V. Both values are within acceptable ranges for general purpose rectifier applications. The difference is not significant for most circuit designs operating at 200 V.

Q: Do both parts use the same package and mounting method?

A: Yes. Both the US5DB-HF and ES5DB use the DO-214AA (SMB) surface mount package. They are mechanically and electrically compatible for PCB assembly without design modifications.

Q: What is the moisture sensitivity level for these parts?

A: The US5DB-HF carries an MSL rating of 1 (Unlimited), indicating minimal moisture sensitivity and no special storage or handling requirements. Standard component storage conditions apply.

Q: Are both parts RoHS compliant?

A: Yes. Both the US5DB-HF and ES5DB are ROHS3 compliant, meeting current environmental and regulatory requirements for electronic components.

Q: Which part should be selected based on current inventory?

A: The ES5DB has significantly higher inventory availability (3810 pieces vs. 1012 pieces for the US5DB-HF). For applications where supply chain continuity is a priority, the ES5DB offers better stock availability.