TLHG5400 Equivalent & Substitute Parts

Part Overview

The TLHG5400 is a green diffused LED in T-1 3/4 through-hole radial package manufactured by Vishay Semiconductor Opto Division. This part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. The device operates at 2.4V forward voltage with 10mA test current and delivers 10mcd luminous intensity at 569nm dominant wavelength. Finding suitable alternatives requires matching electrical characteristics, mechanical form factor, and optical performance within acceptable tolerances.

Key Parameters

Parameter	TLHG5400 Value
Color	Green
Wavelength - Dominant	569nm
Wavelength - Peak	565nm
Voltage - Forward (Vf) Typical	2.4V
Current - Test	10mA
Millicandela Rating	10mcd
Lens Transparency	Diffused
Lens Style	Round with Domed Top
Lens Size	5mm, T-1 3/4
Viewing Angle	60°
Mounting Type	Through Hole
Package / Case	Radial
Height (Max)	12.80mm
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution logic for the TLHG5400 is based on the following critical parameters:

Primary Matching Criteria:

Color: Green
Mounting Type: Through Hole Radial
Lens Transparency: Diffused
Lens Style: Round with Domed Top
Voltage - Forward (Vf): 2.0V to 2.4V range
Current - Test: 10mA to 20mA range
Wavelength - Dominant: 565nm to 575nm range
RoHS Status: ROHS3 Compliant

Grouping Strategy:

Parts are grouped into two categories based on how closely they match the original TLHG5400 specifications:

Group 1 - Direct Parametric Equivalents: Parts with identical or near-identical electrical and optical characteristics, differing primarily in millicandela rating or minor dimensional variations. These include TLHG5401 (same series, higher brightness) and HLMP-3507-D0001 (same wavelength, compatible voltage and current).

Group 2 - Functional Alternatives: Parts with compatible electrical operation but different wavelength (yellow-green 573nm) or different brightness levels. These include Everlight and Würth Elektronik parts that maintain through-hole radial mounting and diffused lens characteristics while operating within acceptable voltage and current ranges.

Parameter Comparison

Parameter	TLHG5400	TLHG5401	5219674F	HLMP-3507-D0001	151051VS04000	1383SYGD/S530-E2	323-2SYGD/S530-E2	336SYGSYGD/S530-E2	4300H5LC	HLMP-3507-D00B2	HLMP-3680-B00B2
Manufacturer	Vishay	Vishay	Dialight	Broadcom	Würth Elektronik	Everlight	Everlight	Everlight	VCC	Broadcom	Broadcom
Color	Green	Green	Green	Green	Green	Yellow-Green	Yellow-Green	Yellow-Green	Green	Green	Green
Wavelength - Dominant (nm)	569	569	569	569	572	573	573	573	-	569	-
Wavelength - Peak (nm)	565	565	565	565	573	575	575	575	565	565	565
Voltage - Forward (Vf) Typical (V)	2.4	2.4	2.1	2.1	2.1	2.0	2.0	2.0	1.8	2.1	5.0
Current - Test (mA)	10	10	20	10	20	20	20	20	2	10	10
Millicandela Rating (mcd)	10	12	40	4.2	140	200	80	16	2.3	4.2	1.6
Lens Transparency	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused, Tinted
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	-	-
Lens Size	5mm, T-1 3/4	5mm, T-1 3/4	4.75mm Dia	5mm, T-1 3/4	4.90mm Dia	5.00mm Dia	4.70mm Dia	5.00mm Dia	5mm, T-1 3/4	-	-
Viewing Angle (°)	60	60	60	60	40	25	60	90	50	-	60
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole, Right Angle	Through Hole, Right Angle
Height (Max) (mm)	12.80	12.80	8.21	9.19	8.95	8.90	6.30	8.90	8.89	-	-
Product Status	Discontinued	Active	Active	Active	Active	Active	Active	Active	Not For New Designs	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Recommended Primary Substitutes (Active Status, Direct Equivalents):

TLHG5401 is the preferred direct substitute. It maintains identical electrical characteristics (2.4V, 10mA), same wavelength (569nm), and identical mechanical form factor (5mm T-1 3/4 through-hole radial). The only difference is increased brightness (12mcd vs 10mcd), which is acceptable for most applications. Product status is Active with full availability.

HLMP-3507-D0001 (Broadcom) is a secondary equivalent option. It matches wavelength (569nm), voltage (2.1V), and current (10mA) specifications with compatible 4.2mcd brightness. Mechanical form factor is identical (5mm T-1 3/4 through-hole radial). Product status is Active.

Functional Alternatives (Active Status, Compatible Operation):

5219674F (Dialight) operates at 2.1V with 20mA test current and delivers 40mcd brightness. Wavelength matches at 569nm. Lens size is slightly smaller (4.75mm) but maintains through-hole radial mounting and diffused lens. Suitable where higher brightness is acceptable.

151051VS04000 (Würth Elektronik) operates at 2.1V with 20mA test current and delivers 140mcd brightness. Wavelength is 572nm (within acceptable green range). Lens size is 4.90mm with 40° viewing angle. Suitable for applications requiring higher brightness.

Not Recommended for New Designs:

4300H5LC (VCC) carries "Not For New Designs" status and should be avoided for new applications despite technical compatibility.

HLMP-3680-B00B2 (Broadcom) operates at 5V forward voltage, making it unsuitable for 2.4V circuit designs without redesign.

Yellow-Green Alternatives (Everlight):

1383SYGD/S530-E2, 323-2SYGD/S530-E2, and 336SYGSYGD/S530-E2 are yellow-green (573nm) alternatives with Active status. These are suitable only where color shift from pure green to yellow-green is acceptable. All maintain through-hole radial mounting and diffused lens characteristics.

Frequently Asked Questions (FAQ)

Q: Can TLHG5401 directly replace TLHG5400 in existing designs?

A: Yes. TLHG5401 is a direct substitute with identical voltage (2.4V), current (10mA), wavelength (569nm), and mechanical form factor (5mm T-1 3/4 through-hole radial). The increased brightness (12mcd vs 10mcd) is typically acceptable in indicator applications.

Q: What is the difference between the Broadcom HLMP-3507 variants?

A: HLMP-3507-D0001 is supplied in Tape & Reel packaging with 4.2mcd brightness. HLMP-3507-D00B2 is supplied in Bulk packaging with identical 4.2mcd brightness but features right-angle mounting. Both are electrically equivalent to TLHG5400 at 2.1V and 10mA.

Q: Why do some substitutes have different test currents (20mA vs 10mA)?

A: Test current defines the operating point at which brightness is measured. Parts specified at 20mA test current will deliver their rated brightness at 20mA operation. When operating at 10mA, brightness will be proportionally lower. Circuit design must account for this difference.

Q: Can yellow-green LEDs (573nm) replace the green TLHG5400 (569nm)?

A: Yellow-green substitutes are functionally compatible electrically and mechanically but produce visibly different color output. Substitution is acceptable only where color shift is acceptable to the application. Everlight parts (1383SYGD/S530-E2, 323-2SYGD/S530-E2, 336SYGSYGD/S530-E2) maintain through-hole radial mounting and diffused lens characteristics.

Q: What is the significance of "Right Angle" mounting in HLMP-3507-D00B2?

A: Right-angle mounting orients the LED leads perpendicular to the lens axis, allowing the LED to mount parallel to the circuit board surface. This differs from standard radial mounting where leads extend from the lens base. Right-angle variants require different PCB layout and are not mechanically interchangeable with standard radial packages.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitutes carry RoHS3 Compliant status, matching the TLHG5400 compliance level.

Q: What viewing angle differences should I consider?

A: TLHG5400 specifies 60° viewing angle. Substitutes range from 25° (narrower beam, higher intensity in forward direction) to 90° (wider beam, lower intensity concentration). Application requirements determine acceptable viewing angle. Narrower angles concentrate light output; wider angles distribute it more broadly.

Q: Can I use HLMP-3680-B00B2 as a substitute?

A: No. HLMP-3680-B00B2 operates at 5V forward voltage, incompatible with TLHG5400 circuits designed for 2.4V operation. Substitution would require circuit redesign.

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