HLMP-3650 Equivalent & Substitute Parts

Part Overview

The HLMP-3650 is a yellow diffused T-1 3/4 through-hole LED manufactured by Broadcom Limited, designed for indication applications requiring discrete 5V operation. This part is currently active in production with 2654 units in stock. Substitute parts are necessary when addressing supply constraints, design revisions, or when alternative electrical characteristics better suit specific circuit requirements while maintaining mechanical and optical compatibility within the T-1 3/4 form factor.

Substiute Parts

HLMP-3650

Broadcom LimitedIn Stock: 2686HLMP-3650 Datasheet

Current PartRFQ

LTL-307Y

Lite-On Inc.In Stock: 3185LTL-307Y Datasheet

MFR RecommendedRFQ

TLLY5400

Vishay Semiconductor Opto DivisionIn Stock: 1824TLLY5400 Datasheet

MFR RecommendedRFQ

WP7113YD5V

KingbrightIn Stock: 14198WP7113YD5V Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HLMP-3650 is determined by the following criteria:

Mechanical Compatibility: All substitute parts must maintain the T-1 3/4 through-hole radial package configuration with 5mm lens diameter to ensure direct board-level replacement without mechanical redesign.

Optical Compatibility: Yellow color and diffused lens transparency are required. Wavelength range (583–590nm dominant) and viewing angle (30–60°) variations are acceptable within standard yellow LED specifications.

Electrical Compatibility: Forward voltage (Vf) and test current parameters determine circuit compatibility. The HLMP-3650 operates at 5V with 10mA test current. Substitute parts with different Vf or current ratings require circuit verification but remain mechanically and optically compatible.

Regulatory Compliance: All substitute parts must maintain ROHS3 compliance and EAR99 ECCN classification to meet procurement and export requirements.

Parameter Comparison

Engineering Selection Recommendations

WP7113YD5V (Kingbright) is the primary substitute for direct replacement. This part maintains identical 5V forward voltage and T-1 3/4 package configuration, ensuring circuit compatibility without modification. Product status is active with the highest inventory availability (14124 units). RoHS3 compliance and EAR99 classification match the main part. Millicandela rating (22mcd) is higher than the HLMP-3650 (2.2mcd), and viewing angle is narrower (30° vs. 60°), which may affect visual indication characteristics in applications requiring wide-angle visibility.

LTL-307Y (Lite-On Inc.) provides mechanical and optical compatibility but requires circuit evaluation due to reduced forward voltage (2.1V vs. 5V) and increased test current (20mA vs. 10mA). This part is active in production with adequate inventory (3100 units) and maintains full regulatory compliance. The significantly higher millicandela rating (29mcd) may require brightness limiting in sensitive applications.

TLLY5400 (Vishay Semiconductor Opto Division) is not recommended for new designs. Although mechanically compatible, this part carries obsolete product status and exhibits substantially different electrical characteristics (2.4V Vf, 2mA test current). The reduced millicandela rating (1.2mcd) and increased maximum height (12.80mm) present additional compatibility concerns.

Frequently Asked Questions (FAQ)

Q: Can WP7113YD5V replace HLMP-3650 without circuit modification?

A: Yes. WP7113YD5V maintains identical 5V forward voltage and T-1 3/4 through-hole radial package, enabling direct substitution at the board level. No circuit redesign is required.

Q: What are the optical differences between HLMP-3650 and WP7113YD5V?

A: Both parts emit yellow light with diffused lenses in the 5mm T-1 3/4 form factor. WP7113YD5V has a narrower viewing angle (30° vs. 60°) and higher brightness (22mcd vs. 2.2mcd). Applications requiring wide-angle indication may experience reduced visibility with WP7113YD5V.

Q: Why is LTL-307Y listed as a substitute if it has different voltage?

A: LTL-307Y maintains mechanical and optical compatibility (T-1 3/4 package, yellow diffused lens, 5mm diameter). The 2.1V forward voltage requires circuit evaluation but does not prevent substitution in applications where the lower voltage can be accommodated through resistor adjustment or alternative power supply configuration.

Q: Is TLLY5400 suitable for new production designs?

A: No. TLLY5400 carries obsolete product status and exhibits significant electrical and dimensional variations (2.4V Vf, 2mA test current, 12.80mm height). New designs should prioritize active parts: WP7113YD5V or LTL-307Y.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. HLMP-3650, LTL-307Y, TLLY5400, and WP7113YD5V are all ROHS3 compliant and classified as EAR99 for export purposes.

Q: What is the primary reason to select WP7113YD5V over other substitutes?

A: WP7113YD5V provides the closest electrical match (5V Vf) to the HLMP-3650, ensuring direct circuit compatibility without modification. It is also the only active substitute with significantly higher inventory availability (14124 units), reducing supply risk.