TLHG5205 Equivalent & Substitute Parts

Part Overview

The TLHG5205 is a green diffused LED indicator manufactured by Vishay Semiconductor Opto Division, designed for through-hole mounting in T-1 3/4 (5mm) form factor applications. This part operates at 2V forward voltage with a 50mcd brightness rating and 569nm dominant wavelength. The product is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Suitable alternatives must maintain compatibility with the through-hole radial mounting configuration and deliver comparable optical and electrical performance within acceptable parameter ranges.

Key Parameters

Parameter	TLHG5205 Value
Manufacturer	Vishay Semiconductor Opto Division
Color	Green
Lens Transparency	Diffused
Lens Size	5mm, T-1 3/4
Voltage - Forward (Vf) (Typ)	2V
Current - Test	10mA
Millicandela Rating	50mcd
Wavelength - Dominant	569nm
Wavelength - Peak	565nm
Viewing Angle	28°
Mounting Type	Through Hole
Package / Case	Radial
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the TLHG5205 is determined by the following critical parameters:

Form Factor & Mounting: All substitutes must use T-1 3/4 (5mm) through-hole radial mounting to ensure mechanical compatibility with existing PCB layouts.
Color & Wavelength: Green color with dominant wavelength in the 559–570nm range maintains optical consistency for indicator applications.
Lens Transparency: Both diffused and clear lens options are acceptable; diffused lenses provide wider viewing angles while clear lenses offer higher brightness concentration.
Electrical Parameters: Forward voltage (Vf) between 1.8V and 2.2V and test current between 2mA and 20mA are within acceptable operating ranges for standard indicator circuits.
Brightness (Millicandela): Substitutes ranging from 2.3mcd to 300mcd accommodate different application requirements; lower brightness parts suit low-power designs while higher brightness parts support visibility in bright environments.
Compliance: All substitutes must maintain ROHS3 compliance and REACH unaffected status to meet regulatory requirements.

Parameter Comparison

Part Number	Manufacturer	Color	Lens Transparency	Vf (Typ)	Current - Test	Millicandela	Wavelength - Dominant	Viewing Angle	Product Status	RoHS Status
TLHG5205	Vishay	Green	Diffused	2V	10mA	50mcd	569nm	28°	Obsolete	ROHS3 Compliant
4300H5LC	VCC	Green	Diffused	1.8V	2mA	2.3mcd	—	50°	Not For New Designs	ROHS3 Compliant
HLMP-3568	Broadcom	Green	Clear	2.1V	10mA	10.6mcd	569nm	40°	Active	ROHS3 Compliant
HLMP-C515	Broadcom	Green	Clear	2.2V	20mA	300mcd	569nm	15°	Active	ROHS3 Compliant
HLMP-C515-L0002	Broadcom	Green	Clear	2.2V	20mA	300mcd	569nm	15°	Active	ROHS3 Compliant
HLMP-C515-L00B2	Broadcom	Green	Tinted	2.2V	20mA	300mcd	—	20°	Active	ROHS3 Compliant
HLMP-C523	Broadcom	Green	Clear	2.2V	20mA	170mcd	570nm	25°	Active	ROHS3 Compliant
HLMP-C523-J0002	Broadcom	Green	Clear	2.2V	20mA	170mcd	570nm	25°	Active	ROHS3 Compliant
HLMP-C615-G0001	Broadcom	Green	Clear	2.2V	20mA	45mcd	559nm	15°	Active	ROHS3 Compliant
LTL-307GE-012	Lite-On	Green	Clear	2.1V	20mA	60mcd	569nm	40°	Active	ROHS3 Compliant
LTL-4234-012	Lite-On	Green	Clear	2.1V	20mA	60mcd	569nm	16°	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Active Product Status)

HLMP-3568, HLMP-C523, HLMP-C523-J0002, LTL-307GE-012, and LTL-4234-012 are recommended as primary substitutes. These parts maintain active product status, ensuring long-term availability and manufacturer support. All are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. HLMP-C523 and HLMP-C523-J0002 offer the closest brightness match at 170mcd with 2.2V forward voltage and 20mA test current, suitable for applications requiring moderate brightness. LTL-307GE-012 provides 60mcd brightness at 2.1V with a 40° viewing angle, offering wider visibility. HLMP-3568 operates at 2.1V with 10mcd brightness and 10mA test current, appropriate for low-power indicator circuits.

Secondary Substitutes (Conditional Use)

HLMP-C515 and HLMP-C515-L0002 deliver 300mcd brightness at 2.2V with 20mA test current, suitable only for applications requiring high brightness visibility. These parts have narrower 15° viewing angles, limiting their use to direct-view applications. HLMP-C615-G0001 operates at 559nm wavelength with 45mcd brightness, providing an alternative for applications with specific wavelength requirements.

Avoid for New Designs

4300H5LC (VCC) is marked "Not For New Designs" and should not be selected for new product development, though it remains available for legacy system maintenance. TLHG5205 itself is obsolete and should be replaced in all new designs.

Frequently Asked Questions (FAQ)

Q: Can I use HLMP-C515 as a direct replacement for TLHG5205?

A: HLMP-C515 is mechanically compatible (T-1 3/4 through-hole radial) and electrically compatible (2.2V forward voltage, ROHS3 compliant). However, it operates at 300mcd brightness compared to TLHG5205's 50mcd, making it suitable only for applications requiring higher brightness. The narrower 15° viewing angle versus TLHG5205's 28° may also affect visibility in some applications.

Q: What is the difference between diffused and clear lens options?

A: Diffused lenses scatter light over a wider viewing angle, providing visibility from multiple directions at reduced brightness concentration. Clear lenses concentrate light in a narrower beam, delivering higher brightness in the direct viewing direction. TLHG5205 uses diffused optics; clear-lens substitutes like HLMP-3568 and HLMP-C523 maintain the same wavelength but alter the light distribution pattern.

Q: Are HLMP-C515 and HLMP-C515-L0002 interchangeable?

A: Yes. Both parts are electrically and mechanically identical (2.2V, 20mA, 300mcd, 569nm). The difference is packaging: HLMP-C515 is supplied in bulk, while HLMP-C515-L0002 is supplied in cut tape format. Selection depends on assembly process requirements.

Q: Which substitute offers the closest match to TLHG5205 specifications?

A: HLMP-3568 (Broadcom) provides the closest electrical match with 2.1V forward voltage, 10mA test current, and 569nm dominant wavelength. It differs in lens transparency (clear vs. diffused) and brightness (10.6mcd vs. 50mcd). For applications requiring diffused optics and moderate brightness, HLMP-C523 at 170mcd with 2.2V is a practical alternative.

Q: Do all substitutes meet current compliance requirements?

A: Yes. All listed substitutes are ROHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic components in most jurisdictions.

Q: Can I use LTL-307GE-012 in place of TLHG5205?

A: Yes, with considerations. LTL-307GE-012 (Lite-On) is mechanically compatible and operates at 2.1V with 60mcd brightness and 569nm wavelength. It uses clear optics with a 40° viewing angle, providing wider visibility than TLHG5205's 28° diffused lens. It is suitable for applications where wider viewing angle is beneficial or neutral.

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