TLHP5101 Equivalent & Substitute Parts

Part Overview

The TLHP5101 is a green 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 2.4V forward voltage with a 99mcd brightness rating and features a clear, colorless lens with 18° viewing angle. The TLHP5101 is classified as obsolete, making substitute parts necessary for new designs and ongoing production support. Equivalent alternatives must maintain compatibility with the T-1 3/4 radial package, green wavelength specification (560nm dominant), and through-hole mounting requirements while accommodating variations in forward voltage, brightness, and viewing angle within acceptable application tolerances.

Key Parameters

Parameter	TLHP5101 Value
Manufacturer	Vishay Semiconductor Opto Division
Color	Green
Lens Size / Package	T-1 3/4 (5mm), Radial
Mounting Type	Through Hole
Lens Transparency	Clear
Lens Color	Colorless
Wavelength - Dominant	560nm
Wavelength - Peak	555nm
Voltage - Forward (Vf) Typical	2.4V
Current - Test	20mA
Millicandela Rating	99mcd
Viewing Angle	18°
Height (Max)	13.20mm
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the TLHP5101 are qualified based on the following criteria:

Primary Compatibility Requirements:

Package format: T-1 3/4 (5mm) radial through-hole mounting
Color: Green LED indication
Lens transparency: Clear (colorless lens preferred for wavelength consistency)
Wavelength range: 560–575nm dominant/peak wavelength
Forward voltage tolerance: 1.8V–2.4V typical
Current rating: 2mA–20mA test current
Viewing angle: 16°–50° acceptable range
Height: 7.70mm–13.20mm maximum

Compliance Requirements:

RoHS3 compliance mandatory
REACH compliance status documented
Moisture sensitivity level 1 (unlimited) preferred

Substitutes are grouped by electrical performance characteristics and product status (active vs. obsolete/not for new designs). Parts with active product status are prioritized for new designs. Forward voltage and brightness variations are acceptable provided the application circuit accommodates the electrical differences through appropriate current-limiting resistor selection.

Parameter Comparison

Parameter	TLHP5101	4300H5LC	5219201F	LTL-4238	LTL2P3KGKNN	LTL2R3KGKNN	MV3450	SLA-560MT3F	SSL-LX5093GC	SSL-LX5093SGC/B
Manufacturer	Vishay	VCC	Dialight	Lite-On	Lite-On	Lite-On	onsemi	Rohm	Lumex	Lumex
Color	Green	Green	Green	Green	Green	Green	Green	Green	Green	Green
Lens Size	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	T-1 3/4
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Lens Transparency	Clear	Diffused	Not Specified	Clear	Clear	Clear	Clear	Clear	Clear	Clear
Wavelength - Dominant (nm)	560	—	—	—	572	572	—	563	—	—
Wavelength - Peak (nm)	555	565	565	565	575	575	565	—	565	565
Voltage - Forward (Vf) Typical (V)	2.4	1.8	2.1	2.1	2.1	2.1	2.2	2.3	2.2	2.2
Current - Test (mA)	20	2	Not Specified	10	20	20	20	20	20	20
Millicandela Rating (mcd)	99	2.3	60	90	980	680	150	100	50	300
Viewing Angle (degrees)	18	50	Not Specified	16	22	30	24	40	30	30
Height Max (mm)	13.20	8.89	Not Specified	8.60	8.70	8.70	8.89	7.70	8.60	8.60
Product Status	Obsolete	Not For New Designs	Active	Active	Active	Active	Obsolete	Not For New Designs	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not Specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Active Product Status (Recommended for New Designs):

LTL2P3KGKNN, LTL2R3KGKNN, LTL-4238, 5219201F, SSL-LX5093GC, and SSL-LX5093SGC/B are all active products with ROHS3 compliance. These parts maintain T-1 3/4 through-hole compatibility and green wavelength specifications within the 560–575nm range.

LTL2P3KGKNN and LTL2R3KGKNN offer the highest brightness ratings (980mcd and 680mcd respectively) and are suitable for applications requiring enhanced visibility. Both operate at 2.1V forward voltage with 20mA test current, matching the TLHP5101 current specification. LTL2R3KGKNN provides a 30° viewing angle, closer to the original 18° specification.

LTL-4238 provides 90mcd brightness at 2.1V with a 16° viewing angle, offering the closest optical performance match to the TLHP5101 while maintaining active product status.

SSL-LX5093SGC/B delivers 300mcd brightness at 2.2V with 30° viewing angle and represents a mid-range brightness option with active availability.

For Existing Designs (Maintenance/Repair):

SLA-560MT3F (Rohm) and SSL-LX5093GC (Lumex) are classified as "Not For New Designs" but remain available for legacy system support. Both maintain clear lens transparency and operate within acceptable voltage and current parameters.

Compliance Verification:

All recommended substitutes are ROHS3 compliant. REACH status varies; verify REACH compliance requirements for your specific application region before final selection.

Frequently Asked Questions (FAQ)

Q: Can I directly replace TLHP5101 with any T-1 3/4 green LED?

A: No. Direct substitution requires matching the T-1 3/4 radial through-hole package, green color, clear lens transparency, and wavelength range (560–575nm peak). Forward voltage and brightness variations are acceptable if your circuit design accommodates them through resistor adjustment. Viewing angle differences may affect application performance depending on optical requirements.

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

A: Clear lens (colorless) provides directional light output with narrower viewing angles (16°–30°), suitable for focused indication. Diffused lens (white or green tinted) spreads light over wider viewing angles (50°–60°), suitable for omnidirectional visibility. The TLHP5101 uses clear lens; substitutes with diffused lenses (such as 4300H5LC or SSL-LX5093GW) are not direct equivalents unless your application permits wider light distribution.

Q: How do I account for forward voltage differences between TLHP5101 (2.4V) and substitute parts (1.8V–2.3V)?

A: Forward voltage differences require circuit-level adjustment. Lower Vf parts (1.8V–2.1V) require higher series resistor values to maintain the same 20mA test current; higher Vf parts (2.3V–2.4V) require lower resistor values. Recalculate the current-limiting resistor using Ohm's law: R = (Vsupply − Vf) / I. Verify the substitute part's brightness rating meets your application requirements at the adjusted current level.

Q: Are obsolete parts (TLHP5101, MV3450) still available for purchase?

A: Obsolete parts may have limited inventory. The provided data indicates 785 pcs of TLHP5101 and 930 pcs of MV3450 are in stock. For long-term production, transition to active-status parts: LTL2P3KGKNN, LTL2R3KGKNN, LTL-4238, 5219201F, SSL-LX5093GC, or SSL-LX5093SGC/B.

Q: What does "Not For New Designs" mean?

A: Parts marked "Not For New Designs" (4300H5LC, SLA-560MT3F) are still manufactured but not recommended for new product development. These parts are suitable for maintenance, repair, and legacy system support only. For new designs, select from active-status parts.

Q: How do brightness ratings (mcd) affect substitution?

A: Millicandela rating determines LED brightness at the specified test current. TLHP5101 operates at 99mcd. Substitutes range from 2.3mcd to 980mcd. Lower brightness (2.3–60mcd) suits applications with reduced visibility requirements; higher brightness (300–980mcd) suits applications requiring enhanced indication visibility. Select based on your application's optical requirements, not solely on matching the original specification.

Q: Is RoHS3 compliance mandatory for all substitutes?

A: All recommended active-status substitutes are ROHS3 compliant. If your application or region requires RoHS3 certification, verify compliance documentation before final selection. MV3450 (onsemi) does not specify RoHS status and should be avoided if RoHS compliance is mandatory.

Q: Can I use SSL-LX5093GW (diffused lens) as a substitute for TLHP5101?

A: SSL-LX5093GW is not a direct substitute. It features a white diffused lens (vs. clear colorless), operates at 2.2V (vs. 2.4V), provides only 30mcd brightness (vs. 99mcd), and offers a 60° viewing angle (vs. 18°). Use SSL-LX5093GW only if your application requires wide-angle diffused green indication; otherwise, select clear-lens alternatives.

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