Equivalent & Substitute Parts Reference for UES1003

Part Overview

The Microchip Technology UES1003 is a general-purpose rectifier diode specified for 150 V maximum DC reverse voltage and 1 A average rectified current in an axial through-hole package. Active inventory positions and comprehensive technical specifications support its use across various power electronics applications requiring fast recovery and a robust junction temperature range. Alternative models may be necessary due to RoHS compliance requirements, regional supply chain needs, or compatibility preferences within given mechanical and electrical key parameters.

Substiute Parts

UES1003

Microchip TechnologyIn Stock: 765UES1003 Datasheet

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STTH102

STMicroelectronicsIn Stock: 1615STTH102 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for UES1003 are selected strictly according to matching category (Diodes, Rectifiers), mounting type (Through Hole), current rating (≥1A), voltage rating (≥150 V), fast recovery speed, device package, and active status. Only parameters explicitly provided—voltage, current, forward voltage, reverse recovery, speed, mechanical form factor, and compliance statuses—define interchangeability.

Parameter Comparison

Engineering Selection Recommendations

Component selection between UES1003 and STTH102 should consider the active product status, stated RoHS and REACH compliance levels, and matching supply formats. If RoHS compliance is required, the STTH102 provides this attribute; if matching package nomenclature or compliance with inventory format is necessary, reference the declared packaging and device case specifications.

Frequently Asked Questions (FAQ)

Q: What are the essential criteria for substituting UES1003 in a design?
A: Substitution should adhere to the minimum requirements for DC reverse voltage, average rectified current, package type, and form factor. Only parameters explicitly provided in the documentation should be considered.

Q: Is the mechanical package identical between UES1003 and STTH102?
A: UES1003 uses an “A, Axial” package, while STTH102 specifies “DO-204AL, DO-41, Axial.” Both support through-hole, axial mounting; confirm compatibility at the board level if package designation is critical.

Q: How does RoHS compliance affect part selection?
A: UES1003 is RoHS non-compliant; STTH102 is ROHS3 compliant. Regulatory compliance requirements should be matched to project specifications using provided documentation.

Q: Do both parts maintain equivalent electrical performance under specified conditions?
A: Both provide fast recovery, 1A continuous current, and comparable forward voltage. STTH102 offers a higher DC reverse voltage rating and lower reverse recovery time per listed parameters.

Q: Are temperature ratings matched between options?
A: UES1003 supports -55°C ~ 175°C junction temperature; STTH102 is specified to 175°C maximum junction temperature. Usage within this range remains consistent.

Q: Are substitute part recommendations limited to those listed?
A: Substitute status is strictly limited to the parts and parameters provided; additional alternatives require explicit parameter documentation for consideration.