LTST-5630UBWT Equivalent & Substitute Parts

Part Overview

The LTST-5630UBWT is a blue 460nm LED indication component manufactured by Lite-On Inc., configured as a 4-SMD discrete device with flat lead exposed pad. This part operates at 3.3V forward voltage with a 120mA test current and features a 120° viewing angle in a diffused lens configuration. The component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity.

Substiute Parts

LTST-5630UBWT

Lite-On Inc.In Stock: 14510LTST-5630UBWT Datasheet

Current PartRFQ

LTW-5630SD458

Lite-On Inc.In Stock: 1014LTW-5630SD458 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The LTW-5630SD458 qualifies as a direct substitute for the LTST-5630UBWT based on the following critical parameters:

Wavelength compatibility: Both components operate in the blue spectrum with peak wavelengths of 458nm, ensuring identical optical output characteristics.

Package equivalence: Both use 4-SMD, flat lead exposed pad configuration with identical footprint dimensions (5.30mm L x 3.00mm W), enabling direct PCB layout compatibility.

Mounting type: Both are surface mount components, maintaining assembly process compatibility.

Viewing angle: Both provide 120° viewing angle, preserving optical performance in circuit applications.

Forward voltage and current: The LTW-5630SD458 operates at 3.1V forward voltage with 150mA test current, representing acceptable operational parameters within typical LED circuit design tolerances for the 5630 series.

Product status transition: The LTW-5630SD458 is active production status, providing long-term availability for designs requiring the LTST-5630UBWT.

Parameter Comparison

Engineering Selection Recommendations

The LTW-5630SD458 is the designated manufacturer substitute for the obsolete LTST-5630UBWT. Selection of this alternative is based on:

Product status: The LTW-5630SD458 maintains active production status, ensuring supply chain continuity and long-term component availability.

Regulatory compliance: The LTW-5630SD458 carries ROHS3 compliance certification, meeting current environmental and material restriction requirements.

Optical and electrical equivalence: Identical peak wavelength (458nm) and viewing angle (120°) preserve optical performance. Forward voltage differential (3.1V vs 3.3V) and test current increase (150mA vs 120mA) fall within standard LED circuit design parameters and do not require fundamental circuit redesign.

Physical compatibility: Identical footprint dimensions and reduced height (0.97mm vs 1.10mm) ensure PCB layout compatibility with potential improvement in assembly clearance.

Frequently Asked Questions (FAQ)

Q: Can the LTW-5630SD458 replace the LTST-5630UBWT in existing designs without PCB modification?

A: Yes. Both components share identical footprint dimensions (5.30mm L x 3.00mm W) and 4-SMD flat lead exposed pad configuration. The LTW-5630SD458 has reduced height (0.97mm vs 1.10mm), which improves clearance without requiring layout changes.

Q: What is the impact of the forward voltage difference (3.1V vs 3.3V)?

A: The 0.2V difference is within typical LED circuit design tolerance. Current-limiting resistor values may require minor adjustment to maintain desired brightness levels, but fundamental circuit topology remains unchanged.

Q: Why does the LTW-5630SD458 have higher test current (150mA vs 120mA)?

A: Test current specification reflects measurement conditions and does not mandate higher operating current in circuit applications. Design current is determined by application requirements and current-limiting circuit design.

Q: Are the MSL ratings identical?

A: Yes. Both components carry MSL 3 (168 Hours) moisture sensitivity classification, requiring identical handling and storage protocols.

Q: What compliance advantage does the LTW-5630SD458 provide?

A: The LTW-5630SD458 is ROHS3 compliant, meeting current environmental regulations. The LTST-5630UBWT compliance status is not specified, making the substitute preferable for new designs and regulated applications.