TLCY6100 Equivalent & Substitute Parts

Part Overview

The TLCY6100 is a yellow 590nm LED indication component manufactured by Vishay Semiconductor Opto Division, designed for through-hole mounting applications. This T-1 3/4 radial LED operates at 2.1V forward voltage with a 7500mcd brightness rating and 18° viewing angle. The component is RoHS3 compliant and currently in active production status with 4799 units in stock.

Substitute parts are necessary when the primary component becomes unavailable, when alternative sourcing is required for supply chain optimization, or when design flexibility permits selection from multiple qualified manufacturers while maintaining functional equivalence within specified electrical and mechanical parameters.

Key Parameters

Parameter	TLCY6100 Value
Color	Yellow
Wavelength - Dominant	590nm
Voltage - Forward (Vf) (Typ)	2.1V
Current - Test	50mA
Millicandela Rating	7500mcd
Viewing Angle	18°
Lens Style	Round with Domed Top
Lens Size	5.80mm Dia
Mounting Type	Through Hole
Package / Case	Radial
Supplier Device Package	T-1 3/4
Height (Max)	9.00mm
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the TLCY6100 is determined by the following critical parameters:

Primary Substitution Criteria:

Color: Yellow (590nm wavelength range)
Mounting Type: Through Hole
Package Style: T-1 3/4 Radial
Lens Configuration: Round with Domed Top, Clear

Secondary Compatibility Parameters:

Forward Voltage (Vf): 1.9V to 2.1V range
Current Rating: 20mA to 50mA test current
Millicandela Rating: 1000mcd minimum
Viewing Angle: 8° to 40° acceptable range
Height: 7.70mm to 9.00mm maximum
RoHS3 Compliance: Required

Substitute parts are grouped into two categories:

Category A - Direct Yellow LED Substitutes (Preferred): Parts matching yellow color (589-591nm), T-1 3/4 package, similar forward voltage (1.9V-2.1V), and RoHS3 compliance. These include SLI-570YT3F, SLI-570Y2T3F, LTL2R3KSK, OVLFY3C7, OVLGY0C9B9, and SSL-LX5093SYC.

Category B - Alternative Color Substitutes (Limited Compatibility): Orange LED parts (605-611nm wavelength) with T-1 3/4 package and RoHS3 compliance. These include HLMP-EJ30-NR0DD, SLI-560DT3F, and SSL-LX5093SOC. These are suitable only when application requirements permit color variation.

Parameter Comparison

Part Number	Manufacturer	Color	Wavelength (nm)	Vf (Typ)	Current - Test	mcd Rating	Viewing Angle	Height (Max)	Package	Product Status	RoHS3
TLCY6100	Vishay	Yellow	590	2.1V	50mA	7500	18°	9.00mm	T-1 3/4	Active	Yes
SLI-570YT3F	Rohm	Yellow	591	2.1V	20mA	5200	20°	8.85mm	T-1 3/4	Active	Yes
SLI-570Y2T3F	Rohm	Yellow	591	2.1V	20mA	5200	20°	8.85mm	T-1 3/4	Active	Yes
SLI-560YT3F	Rohm	Yellow	591	1.9V	20mA	1000	40°	7.70mm	T-1 3/4	Active	Yes
LTL2R3KSK	Lite-On	Yellow	590	2.05V	20mA	1150	30°	8.70mm	T-1 3/4	Active	Yes
OVLFY3C7	TT Electronics/Optek	Yellow	589	2.0V	20mA	7400	30°	8.70mm	T-1 3/4	Active	Yes
OVLGY0C9B9	TT Electronics/Optek	Yellow	589	2.0V	20mA	14000	8°	8.90mm	T-1 3/4	Active	Yes
SSL-LX5093SYC	Lumex	Yellow	590	2.1V	20mA	1000	30°	8.60mm	T-1 3/4	Active	Yes
HLMP-EJ30-NR0DD	Broadcom	Orange	605	1.98V	20mA	1290	30°	8.91mm	T-1 3/4	Active	Yes
SLI-560DT3F	Rohm	Orange	611	1.9V	20mA	1000	40°	7.70mm	T-1 3/4	Not For New Designs	Yes
SSL-LX5093SOC	Lumex	Orange	610	2.0V	20mA	2500	30°	8.60mm	T-1 3/4	Active	Yes

Engineering Selection Recommendations

Tier 1 - Preferred Substitutes (Active Status, Full Compatibility):

SLI-570YT3F and SLI-570Y2T3F from Rohm Semiconductor are the primary recommended substitutes. Both maintain identical forward voltage (2.1V), matching wavelength (591nm), T-1 3/4 package configuration, and RoHS3 compliance. These parts are in active production status with adequate inventory availability.

OVLFY3C7 from TT Electronics/Optek Technology provides equivalent brightness (7400mcd) to the TLCY6100 (7500mcd) with matching yellow wavelength (589nm) and T-1 3/4 package. This part is suitable for applications where the 30° viewing angle is acceptable.

Tier 2 - Secondary Substitutes (Active Status, Parameter Variations):

LTL2R3KSK from Lite-On Inc. and SSL-LX5093SYC from Lumex Opto/Components Inc. are active production alternatives with T-1 3/4 packages and yellow color. These parts operate within acceptable forward voltage ranges (2.05V and 2.1V respectively) but feature reduced brightness ratings (1150mcd and 1000mcd). Selection is appropriate when brightness reduction is acceptable for the application.

OVLGY0C9B9 from TT Electronics/Optek Technology offers significantly higher brightness (14000mcd) with narrower viewing angle (8°). This part is suitable for applications requiring concentrated light output with directional characteristics.

Tier 3 - Limited Compatibility (Alternative Color):

HLMP-EJ30-NR0DD from Broadcom Limited and SSL-LX5093SOC from Lumex are orange LED alternatives (605nm and 610nm respectively) with T-1 3/4 packages. These parts are suitable only when application requirements permit color substitution from yellow to orange.

Not Recommended:

SLI-560DT3F from Rohm Semiconductor carries "Not For New Designs" product status and should not be selected for new applications despite RoHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can I substitute an orange LED for the yellow TLCY6100?

A: Orange LED substitutes (HLMP-EJ30-NR0DD, SSL-LX5093SOC) are mechanically and electrically compatible with T-1 3/4 through-hole mounting. However, color substitution is only acceptable if the application does not require yellow indication. Verify application requirements before selecting orange alternatives.

Q: What is the difference between the SLI-570YT3F and SLI-570Y2T3F?

A: Both parts are functionally equivalent yellow LEDs from Rohm Semiconductor with identical electrical specifications (2.1V forward voltage, 591nm wavelength, 5200mcd brightness, 20° viewing angle). The designation difference reflects internal manufacturing variations. Either part is suitable as a direct substitute.

Q: Why does OVLGY0C9B9 have a narrower viewing angle (8°) compared to TLCY6100 (18°)?

A: OVLGY0C9B9 is designed for concentrated light output applications, achieving 14000mcd brightness through optical focusing. The narrower 8° viewing angle is a direct result of this design. Select this part only when directional, high-intensity illumination is required.

Q: Is the brightness difference between TLCY6100 (7500mcd) and LTL2R3KSK (1150mcd) significant?

A: Yes. LTL2R3KSK provides approximately 15% of the TLCY6100 brightness. This substitute is suitable only for applications where reduced brightness is acceptable or where the original brightness specification exceeds actual requirements.

Q: Are all substitute parts RoHS3 compliant?

A: All recommended substitute parts in Tier 1 and Tier 2 are RoHS3 compliant. SLI-560DT3F is RoHS3 compliant but carries "Not For New Designs" status and should be avoided.

Q: What is the maximum height variation among substitute parts?

A: Substitute parts range from 7.70mm (SLI-560DT3F, SLI-560YT3F) to 9.00mm (TLCY6100). Height differences of up to 1.30mm may affect PCB layout and mechanical clearance. Verify board-level spacing before final selection.

Q: Can I use parts with lower test current ratings (20mA) in place of TLCY6100 (50mA)?

A: Yes. The test current specification indicates the current at which brightness is measured. All substitute parts operate at 20mA test current, which is lower than TLCY6100's 50mA specification. This does not prevent substitution; however, verify that your circuit design accommodates the different brightness characteristics at your actual operating current.

Q: Which substitute offers the closest match to TLCY6100 specifications?

A: OVLFY3C7 from TT Electronics/Optek Technology provides the closest overall match, with equivalent brightness (7400mcd vs 7500mcd), matching yellow wavelength (589nm), identical forward voltage range (2.0V vs 2.1V), and T-1 3/4 package configuration. This part is recommended as the primary substitute when TLCY6100 becomes unavailable.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message