HLMP-Q155-F0021 Equivalent & Substitute Parts

Part Overview

The HLMP-Q155-F0021 is a red 637nm LED indication component manufactured by Broadcom Limited, configured as a 2-SMD surface mount device with yoke bend leads. This Active product is ROHS3 compliant and designed for discrete LED indication applications requiring a 1.6V forward voltage at 1mA test current. The component features a clear, domed round lens with 1.78mm diameter and 28° viewing angle, housed in a compact 2.09mm × 2.21mm × 2.92mm package.

Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameters for surface mount red LED indication components, particularly when original inventory is unavailable or when alternative lead configurations better suit specific assembly requirements.

Substiute Parts

HLMP-Q155-F0021

Broadcom LimitedIn Stock: 1078HLMP-Q155-F0021 Datasheet

Current PartRFQ

CMD95-21SRC/TR7

Visual Communications Company - VCCIn Stock: 1823CMD95-21SRC/TR7 Datasheet

MFR RecommendedRFQ

CMD95-21VRC/TR7

Visual Communications Company - VCCIn Stock: 5022CMD95-21VRC/TR7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HLMP-Q155-F0021 are qualified based on the following criteria:

Color Match: Red LED indication components only.

Mounting Type: Surface mount configuration required.

Package Configuration: 2-SMD devices with alternative lead styles (gull wing vs. yoke bend) are acceptable substitutes when mechanical footprint and assembly process compatibility are verified.

Electrical Parameters: Forward voltage (Vf) tolerance within typical application ranges (1.6V to 2.0V), with wavelength characteristics in the red spectrum (637nm to 660nm dominant/peak wavelength).

Optical Performance: Lens style consistency (round domed top), comparable lens diameter (1.78mm to 1.80mm), and viewing angle within acceptable ranges (25° to 28°).

Compliance & Status: Active product status with ROHS3 compliance and REACH unaffected designation.

The two identified substitutes, CMD95-21SRC/TR7 and CMD95-21VRC/TR7, both manufactured by Visual Communications Company (VCC), meet these criteria with gull wing lead configuration as an alternative to the yoke bend design.

Parameter Comparison

Engineering Selection Recommendations

CMD95-21SRC/TR7 Selection Criteria:

This substitute is suitable for applications where increased luminous intensity (100mcd vs. 4mcd) is acceptable or beneficial. The forward voltage of 1.7V is marginally higher than the HLMP-Q155-F0021 (1.6V), requiring circuit design verification to confirm compatibility with existing current-limiting resistor values. The gull wing lead configuration requires PCB footprint redesign compared to yoke bend leads. Peak wavelength of 660nm represents a shift toward longer wavelengths within the red spectrum. MSL rating of 2 (1 Year) provides extended moisture protection compared to the original component's 2A rating. Both components maintain ROHS3 compliance and Active product status.

CMD95-21VRC/TR7 Selection Criteria:

This substitute is appropriate for applications requiring moderate luminous intensity (25mcd) with a more conservative brightness increase. The forward voltage of 2V represents a 0.4V increase from the HLMP-Q155-F0021, necessitating circuit recalculation for current-limiting resistor values to maintain proper LED operation. The gull wing lead configuration requires PCB footprint modification. Peak wavelength of 640nm is closer to the original component's 645nm specification. MSL rating of 3 (168 Hours) indicates reduced moisture protection compared to both the original and CMD95-21SRC/TR7. Both components maintain ROHS3 compliance and Active product status.

Lead Configuration Consideration:

The transition from yoke bend to gull wing leads represents a mechanical substitution requiring PCB layout and assembly process changes. Both substitute parts are qualified for Tape & Reel packaging, maintaining supply chain compatibility.

Frequently Asked Questions (FAQ)

Q: Can CMD95-21SRC/TR7 or CMD95-21VRC/TR7 be used as direct drop-in replacements for HLMP-Q155-F0021?

A: No. While both substitutes are functionally equivalent red LED indication components, the lead configuration differs (gull wing vs. yoke bend), requiring PCB footprint redesign. Additionally, forward voltage differences (1.7V and 2V vs. 1.6V) necessitate circuit recalculation for current-limiting resistor values to maintain proper LED operation and brightness consistency.

Q: What are the key electrical differences between these three components?

A: The HLMP-Q155-F0021 operates at 1.6V forward voltage with 4mcd brightness. CMD95-21SRC/TR7 operates at 1.7V with 100mcd brightness. CMD95-21VRC/TR7 operates at 2V with 25mcd brightness. These differences affect circuit design, power consumption, and visual indication intensity.

Q: How do the wavelength specifications compare?

A: HLMP-Q155-F0021 has a peak wavelength of 645nm (dominant 637nm). CMD95-21SRC/TR7 has a peak wavelength of 660nm. CMD95-21VRC/TR7 has a peak wavelength of 640nm. All three are within the red spectrum, with CMD95-21VRC/TR7 closest to the original specification.

Q: What is the impact of different MSL ratings?

A: HLMP-Q155-F0021 has MSL 2A (4 Weeks), CMD95-21SRC/TR7 has MSL 2 (1 Year), and CMD95-21VRC/TR7 has MSL 3 (168 Hours). MSL rating indicates moisture sensitivity during storage and handling. Lower MSL numbers and longer time periods provide greater protection. CMD95-21SRC/TR7 offers the best moisture protection, while CMD95-21VRC/TR7 requires more careful handling.

Q: Are all three components RoHS compliant?

A: Yes. HLMP-Q155-F0021, CMD95-21SRC/TR7, and CMD95-21VRC/TR7 are all ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for electronic component manufacturing and use.

Q: What viewing angle differences exist between these components?

A: HLMP-Q155-F0021 has a 28° viewing angle, while both CMD95-21SRC/TR7 and CMD95-21VRC/TR7 have 25° viewing angles. This 3° difference may affect the spatial distribution of light in applications requiring wide-angle indication.

Q: How do the physical dimensions compare?

A: HLMP-Q155-F0021 measures 2.09mm L × 2.21mm W × 2.92mm H. Both CMD95-21SRC/TR7 and CMD95-21VRC/TR7 measure 2.20mm L × 2.10mm W × 2.88mm H. Dimensional differences are minimal, but the lead configuration change (yoke bend to gull wing) requires PCB footprint adjustment.