TLHG4200 Equivalent & Substitute Parts

Part Overview

The TLHG4200 is a green LED indicator manufactured by Vishay Semiconductor Opto Division, designed for through-hole mounting applications. This T-1 (3mm) radial LED operates at 2.4V forward voltage with a 10mcd brightness rating and 569nm dominant wavelength. The part is currently active in production and ROHS3 compliant.

Substitute parts are necessary when the TLHG4200 becomes unavailable, when design requirements demand different electrical characteristics such as higher brightness or lower forward voltage, or when alternative sourcing is required for supply chain optimization.

Key Parameters

Parameter	TLHG4200 Value
Manufacturer	Vishay Semiconductor Opto Division
Color	Green
Lens Size	3mm, T-1
Lens Style	Round with Domed Top
Lens Transparency	Clear
Voltage - Forward (Vf) Typical	2.4V
Current - Test	10mA
Millicandela Rating	10mcd
Wavelength - Dominant	569nm
Wavelength - Peak	565nm
Viewing Angle	44°
Mounting Type	Through Hole
Package / Case	Radial
Height (Max)	6.10mm
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution validity for the TLHG4200 is determined by the following criteria:

Mandatory Compatibility Parameters:

Color: Green
Lens Size: 3mm, T-1
Lens Style: Round with Domed Top
Lens Transparency: Clear
Mounting Type: Through Hole
Package / Case: Radial

Allowable Variation Parameters:

Voltage - Forward (Vf): 2.1V to 2.4V (within typical operating range)
Current - Test: 10mA to 20mA (standard test currents for this category)
Millicandela Rating: 10mcd to 240mcd (brightness variation acceptable based on application requirements)
Wavelength - Dominant: 557nm to 573nm (green spectrum range)
Viewing Angle: 30° to 85° (application-dependent)
Height (Max): 4.60mm to 6.35mm (PCB clearance dependent)

All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) rating, ensuring regulatory and environmental compatibility.

Parameter Comparison

Part Number	Manufacturer	Vf (Typ)	Current - Test	mcd Rating	Wavelength - Dominant	Viewing Angle	Height (Max)	Product Status
TLHG4200	Vishay Semiconductor Opto Division	2.4V	10mA	10mcd	569nm	44°	6.10mm	Active
5219430F	Dialight	2.1V	10mA	50mcd	—	45°	5.89mm	Active
HLMP-1520	Broadcom Limited	2.1V	10mA	22mcd	569nm	45°	6.35mm	Active
HLMP-1521	Broadcom Limited	2.1V	10mA	22mcd	569nm	45°	6.35mm	Active
HLMP-Y502-F0000	Broadcom Limited	2.2V	20mA	40mcd	573nm	55°	5.20mm	Active
HLMP-Y802-F0000	Broadcom Limited	2.1V	20mA	240mcd	572nm	45°	5.20mm	Active
SLR-332MC3F	Rohm Semiconductor	2.1V	10mA	16mcd	572nm	85°	4.60mm	Not For New Designs
SSL-LX3044GT	Lumex Opto/Components Inc.	2.2V	20mA	40mcd	—	30°	4.60mm	Active
WP132XGT	Kingbright	2.2V	20mA	40mcd	568nm	50°	5.20mm	Active
WP710A10GT	Kingbright	2.2V	20mA	40mcd	568nm	34°	5.90mm	Active
WP710A10PGT	Kingbright	2.25V	20mA	12mcd	557nm	34°	5.90mm	Active

Engineering Selection Recommendations

Primary Substitutes (Active Status, Closest Electrical Match):

HLMP-1520 and HLMP-1521 from Broadcom Limited are the most direct substitutes. Both maintain identical forward voltage (2.1V), test current (10mA), and wavelength characteristics (569nm dominant) to the TLHG4200. The 22mcd brightness is higher than the original 10mcd, suitable for applications where increased visibility is acceptable. Both parts are in active production with full ROHS3 compliance.

Secondary Substitutes (Active Status, Moderate Parameter Variation):

HLMP-Y502-F0000, WP132XGT, WP710A10GT, and SSL-LX3044GT are active parts with 40mcd brightness ratings and forward voltages between 2.1V and 2.2V. These parts operate at 20mA test current and are suitable for applications requiring higher brightness. Wavelength dominants range from 565nm to 573nm, maintaining green spectrum compliance.

HLMP-Y802-F0000 offers significantly higher brightness (240mcd) at 2.1V forward voltage and 20mA test current, appropriate for applications demanding maximum visibility.

Limited Substitutes (Active Status, Specific Application Use):

WP710A10PGT operates at 2.25V with lower brightness (12mcd) and narrower wavelength (557nm), suitable only for applications with specific brightness and wavelength requirements.

5219430F from Dialight provides 50mcd brightness at 2.1V and 10mA, with slightly reduced height (5.89mm), suitable for space-constrained PCB layouts.

Not Recommended for New Designs:

SLR-332MC3F from Rohm Semiconductor carries "Not For New Designs" status and should be avoided for new product development, despite technical compatibility.

Frequently Asked Questions (FAQ)

Q: Can I substitute the TLHG4200 with any green T-1 LED?

A: No. Substitutes must maintain the same lens size (3mm, T-1), lens style (round with domed top), lens transparency (clear), and mounting type (through hole). Additionally, forward voltage must remain within the 2.1V to 2.4V range to ensure proper circuit operation without redesign.

Q: What is the brightness difference between the TLHG4200 and substitute parts?

A: The TLHG4200 operates at 10mcd. Most active substitutes range from 12mcd to 240mcd. Higher brightness parts (40mcd and above) will produce noticeably brighter indication. Lower brightness parts (12mcd to 22mcd) will produce similar or slightly brighter indication. Application requirements determine acceptable brightness variation.

Q: Does forward voltage variation affect circuit design?

A: The TLHG4200 operates at 2.4V typical. Substitutes range from 2.1V to 2.25V. This 0.15V to 0.3V variation is within standard LED circuit tolerance and typically does not require redesign. However, current-limiting resistor values may require recalculation for optimal brightness and component lifespan in precision applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring regulatory and environmental compatibility with the original TLHG4200.

Q: What is the difference between HLMP-1520 and HLMP-1521?

A: Both parts are electrically and mechanically identical. They share the same forward voltage (2.1V), brightness (22mcd), wavelength (569nm), and physical dimensions. Selection between them is based on inventory availability and supplier preference.

Q: Can I use HLMP-Y802-F0000 as a direct replacement?

A: HLMP-Y802-F0000 is electrically compatible but produces significantly higher brightness (240mcd versus 10mcd). It is suitable only if increased visibility is acceptable or required. The 20mA test current versus the original 10mA may require circuit resistor recalculation.

Q: Why is SLR-332MC3F marked "Not For New Designs"?

A: SLR-332MC3F carries obsolescence status from Rohm Semiconductor. While technically compatible, it should not be selected for new product development due to uncertain long-term availability and potential discontinuation.

Q: What viewing angle differences exist among substitutes?

A: The TLHG4200 has a 44° viewing angle. Substitutes range from 30° (SSL-LX3044GT, narrow beam) to 85° (SLR-332MC3F, wide beam). Viewing angle selection depends on application requirements for light distribution and visibility from different angles.

Q: Are there height restrictions for PCB layout?

A: The TLHG4200 has a maximum height of 6.10mm. Substitutes range from 4.60mm to 6.35mm. Space-constrained designs should prioritize parts with lower maximum heights (4.60mm to 5.20mm). Taller parts (6.35mm) may require PCB layout verification for clearance.

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