TLHK5100 Equivalent & Substitute Parts

Part Overview

The TLHK5100 is a red LED indicator from Vishay Semiconductor Opto Division, designed for through-hole mounting applications. This T-1 3/4 radial LED operates at 2V forward voltage with a 1400mcd brightness rating and 630nm dominant wavelength. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are necessary when the original TLHK5100 becomes unavailable, when design requirements demand higher brightness levels, or when alternative viewing angles better suit specific application needs while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Manufacturer Part Number	TLHK5100
Manufacturer	Vishay Semiconductor Opto Division
Color	Red
Wavelength - Dominant	630nm
Voltage - Forward (Vf) (Typ)	2V
Current - Test	20mA
Millicandela Rating	1400mcd
Lens Style	Round with Domed Top
Lens Size	5.80mm Dia
Viewing Angle	18°
Mounting Type	Through Hole
Package / Case	Radial
Supplier Device Package	T-1 3/4
Height (Max)	13.20mm
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the TLHK5100 are qualified based on the following electrical and mechanical parameters:

Primary Compatibility Criteria:

Red color (630nm wavelength range: 623–643nm acceptable)
Through-hole radial mounting configuration
Forward voltage range: 1.9V to 2.1V (allows minor circuit adjustments)
Current rating: 20mA test current
Lens style: Round with domed top
RoHS3 compliance and unlimited MSL rating

Substitution Logic: Substitute parts maintain the same mounting footprint (T-1 3/4 or 5mm round through-hole), operate within compatible voltage ranges, and preserve the red LED indication function. Brightness (millicandela rating) and viewing angle may vary to accommodate different application requirements. Height variations are acceptable within the through-hole design envelope.

Parameter Comparison

Parameter	TLHK5100	151053RS03000	HLMP-EG08-WZ000	HLMP-EG08-X1000	HLMP-EG08-Y2000	HLMP-EG08-YZ000	HLMP-EG10-WZ000	HLMP-EG15-PS000	HLMP-EG15-RU000	HLMP-EG15-UX000	HLMP-EG1G-Y10DD
Manufacturer	Vishay	Würth Elektronik	Broadcom	Broadcom	Broadcom	Broadcom	Broadcom	Broadcom	Broadcom	Broadcom	Broadcom
Color	Red	Red	Red	Red	Red	Red	Red	Red	Red	Red	Red
Wavelength - Dominant (nm)	630	623	626	626	626	626	626	626	626	626	626
Voltage - Forward (Vf) (Typ)	2V	1.9V	1.9V	1.9V	1.9V	1.9V	1.9V	1.9V	1.9V	1.9V	2.1V
Current - Test (mA)	20	20	20	20	20	20	20	20	20	20	20
Millicandela Rating (mcd)	1400	5000	10750	14100	18150	12650	10750	1690	2850	6250	15150
Lens Style	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top
Lens Size	5.80mm Dia	5.00mm Dia	5mm, T-1 3/4	5mm, T-1 3/4	5mm, T-1 3/4	5mm, T-1 3/4	5mm, T-1 3/4	5mm, T-1 3/4	5mm, T-1 3/4	5mm, T-1 3/4	5mm, T-1 3/4
Viewing Angle	18°	30°	8°	8°	8°	8°	8°	15°	15°	15°	15°
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial	Radial	Radial	Radial	Radial	Radial	Radial	Radial	Radial	Radial	Radial
Supplier Device Package	T-1 3/4	5mm Round	T-1 3/4	T-1 3/4	T-1 3/4	T-1 3/4	T-1 3/4	T-1 3/4	T-1 3/4	T-1 3/4	T-1 3/4
Height (Max) (mm)	13.20	8.85	8.91	8.91	8.91	8.91	12.62	8.91	8.91	8.91	8.91
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain active product status and full RoHS3 compliance, ensuring regulatory alignment with the original TLHK5100. Forward voltage compatibility ranges from 1.9V to 2.1V, requiring circuit verification when substituting parts with 1.9V ratings in designs optimized for 2V operation.

Brightness-Matched Selection: HLMP-EG15-PS000 (1690mcd) and HLMP-EG15-RU000 (2850mcd) provide brightness levels closest to the TLHK5100 (1400mcd) while maintaining a 15° viewing angle suitable for general indication applications.

High-Brightness Alternatives: HLMP-EG08-Y2000 (18150mcd), HLMP-EG08-X1000 (14100mcd), and HLMP-EG1G-Y10DD (15150mcd) deliver significantly higher brightness for applications requiring enhanced visibility. These parts feature narrower 8° viewing angles (except HLMP-EG1G-Y10DD at 15°), concentrating light output in a focused beam.

Mechanical Considerations: Most Broadcom substitutes feature reduced height (8.91mm) compared to the TLHK5100 (13.20mm). HLMP-EG10-WZ000 (12.62mm) provides closer height matching. The Würth Elektronik 151053RS03000 operates at 1.9V with 5000mcd brightness but uses a 5mm round package instead of T-1 3/4, requiring PCB layout verification.

Viewing Angle Trade-offs: The TLHK5100 provides an 18° viewing angle. Narrower 8° options concentrate brightness for focused applications, while 15° and 30° alternatives offer wider distribution for general indication use.

Frequently Asked Questions (FAQ)

Q: Can I substitute HLMP-EG08-WZ000 for TLHK5100 in a 2V circuit? A: HLMP-EG08-WZ000 operates at 1.9V typical forward voltage compared to TLHK5100's 2V. Direct substitution is electrically feasible with minimal voltage difference, but verify circuit current-limiting resistor values to ensure proper brightness and component stress levels remain within specification.

Q: What is the primary difference between HLMP-EG08 variants (WZ000, X1000, Y2000, YZ000)? A: These parts share identical electrical specifications (1.9V, 20mA, 626nm wavelength, 8° viewing angle, T-1 3/4 package) but differ in millicandela ratings: WZ000 (10750mcd), X1000 (14100mcd), Y2000 (18150mcd), and YZ000 (12650mcd). Selection depends on required brightness level for the application.

Q: Is the Würth Elektronik 151053RS03000 mechanically compatible with TLHK5100? A: Both are through-hole radial red LEDs with compatible electrical specifications (1.9V, 20mA, 623nm wavelength). However, 151053RS03000 uses a 5mm round package versus TLHK5100's T-1 3/4 package. Verify PCB hole spacing and mounting clearances before substitution.

Q: Why do some substitutes have lower forward voltage (1.9V vs 2V)? A: Broadcom HLMP-EG series parts operate at 1.9V typical, a 0.1V reduction from TLHK5100. This minor difference is within normal LED manufacturing tolerance and does not prevent substitution. Circuit resistor values may require adjustment to maintain consistent brightness.

Q: Which substitute offers the closest brightness match to TLHK5100? A: HLMP-EG15-PS000 (1690mcd) and HLMP-EG15-RU000 (2850mcd) provide the nearest brightness levels to TLHK5100's 1400mcd rating while maintaining a compatible 15° viewing angle and T-1 3/4 package.

Q: Can I use HLMP-EG1G-Y10DD as a direct replacement? A: HLMP-EG1G-Y10DD is electrically compatible (2.1V forward voltage, 20mA, 626nm wavelength, T-1 3/4 package) but operates at higher brightness (15150mcd) and is supplied in cut tape packaging rather than bulk. Verify packaging requirements and brightness suitability for your application.

Q: What viewing angle should I select for my application? A: TLHK5100 provides 18° viewing angle for moderate-angle indication. Select 8° for focused, narrow-beam applications; 15° for general indication; 30° for wide-angle visibility. Narrower angles concentrate brightness; wider angles distribute light across a larger area.

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