TLCY5100 LED Yellow Clear T-1 3/4 Through Hole - Equivalent & Substitute Parts

Part Overview

The TLCY5100 is a yellow 590nm LED indication component manufactured by Vishay Semiconductor Opto Division, configured as a discrete 2.1V radial through-hole device in T-1 3/4 package format. The product is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement continuity. Substitute parts are selected based on matching electrical characteristics, mechanical form factor compatibility, and optical performance parameters.

Key Parameters

Parameter	TLCY5100 Value
Color	Yellow
Wavelength - Dominant	590nm
Voltage - Forward (Vf) Typical	2.1V
Current - Test	50mA
Millicandela Rating	7500mcd
Lens Style	Round with Domed Top
Lens Size	5.80mm Dia
Viewing Angle	18°
Mounting Type	Through Hole
Package / Case	Radial
Supplier Device Package	T-1 3/4
Height (Max)	13.20mm
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts are organized into two functional categories based on allowed electrical and mechanical parameters:

Category 1: Direct Yellow LED Substitutes (590nm Wavelength Family) Substitutes TLCY6100, 151053YS04500, 333-2UYC/S530-A3, 383-2UYC/S400-A6, 383-2UYC/S530-A3, and 7383-Y7C3-AQSB-P-MS maintain yellow color emission in the 589-590nm dominant wavelength range. These parts share forward voltage characteristics between 2.0V and 2.1V and are configured for through-hole radial mounting. Substitution within this category is determined by: color match (yellow), wavelength compatibility (589-590nm dominant), forward voltage tolerance (2.0-2.1V typical), mounting type (through hole radial), and lens transparency (clear). Lens size and viewing angle variations exist within this group but do not preclude substitution when mechanical envelope permits.

Category 2: Orange LED Alternatives (605nm Wavelength Family) Substitutes HLMP-EJ08-WZ000, HLMP-EJ08-X1000, HLMP-EJ08-Y2000, and HLMP-EJ10-XZ0DD are orange 605nm LEDs manufactured by Broadcom Limited. These parts operate at 1.98V forward voltage and are configured in T-1 3/4 through-hole radial packages. Orange substitution is applicable only when circuit design permits wavelength shift from yellow (590nm) to orange (605nm) and when the lower forward voltage (1.98V vs 2.1V) is compatible with existing current-limiting resistor networks.

Parameter Comparison

Part Number	Manufacturer	Color	Wavelength - Dominant (nm)	Vf Typical (V)	Current - Test (mA)	Millicandela (mcd)	Lens Size	Viewing Angle (°)	Package	Height Max (mm)	Product Status
TLCY5100	Vishay	Yellow	590	2.1	50	7500	5.80mm Dia	18	T-1 3/4	13.20	Obsolete
TLCY6100	Vishay	Yellow	590	2.1	50	7500	5.80mm Dia	18	T-1 3/4	9.00	Active
151053YS04500	Würth Elektronik	Yellow	590	2.1	20	1500	5.00mm Dia	45	5mm Round	8.85	Active
333-2UYC/S530-A6	Everlight	Yellow	589	2.0	20	3200	5.00mm Dia	10	5mm	8.90	Active
383-2UYC/S400-A6	Everlight	Yellow	589	2.0	20	8000	5.00mm Dia	6	5.0mm Round	8.90	Active
383-2UYC/S530-A3	Everlight	Yellow	589	2.0	20	4263	5.00mm Dia	6	5.0mm Round	8.90	Active
7383-Y7C3-AQSB-P-MS	Everlight	Yellow	589	2.0	20	4500	5mm, T-1 3/4	30	T-1 3/4	12.60	Active
HLMP-EJ08-WZ000	Broadcom	Orange	605	1.98	20	10750	5mm, T-1 3/4	8	T-1 3/4	8.91	Active
HLMP-EJ08-X1000	Broadcom	Orange	605	1.98	20	14100	5mm, T-1 3/4	8	T-1 3/4	8.91	Active
HLMP-EJ08-Y2000	Broadcom	Orange	605	1.98	20	18150	5mm, T-1 3/4	8	T-1 3/4	8.91	Active
HLMP-EJ10-XZ0DD	Broadcom	Orange	605	1.98	20	11600	5mm, T-1 3/4	8	T-1 3/4	12.62	Active

Engineering Selection Recommendations

Primary Substitute: TLCY6100 TLCY6100 is the manufacturer-recommended direct replacement for TLCY5100. Both parts are manufactured by Vishay Semiconductor Opto Division and share identical electrical specifications: 590nm dominant wavelength, 2.1V forward voltage, 7500mcd brightness, and 18° viewing angle. TLCY6100 is active product status with ROHS3 compliance and unlimited moisture sensitivity rating. The primary mechanical difference is reduced maximum height (9.00mm vs 13.20mm), which provides improved PCB clearance in space-constrained applications. This substitution requires no circuit redesign.

Secondary Substitutes: Everlight Yellow LEDs (589nm Family) Parts 333-2UYC/S530-A6, 383-2UYC/S400-A6, 383-2UYC/S530-A3, and 7383-Y7C3-AQSB-P-MS are active Everlight Electronics yellow LEDs with 589nm dominant wavelength and 2.0V forward voltage. These parts maintain yellow color emission within acceptable tolerance of the original 590nm specification. Forward voltage reduction from 2.1V to 2.0V requires verification that existing current-limiting resistor networks accommodate the 0.1V differential. The 7383-Y7C3-AQSB-P-MS variant maintains T-1 3/4 package format with 12.60mm maximum height, providing closest mechanical compatibility to TLCY5100. All Everlight substitutes carry ROHS3 compliance.

Würth Elektronik Alternative: 151053YS04500 151053YS04500 is a yellow 590nm LED from Würth Elektronik in 5mm round through-hole package. This part matches the original wavelength and forward voltage but operates at reduced test current (20mA vs 50mA) and lower brightness (1500mcd vs 7500mcd). Mechanical form factor differs from T-1 3/4 configuration. This substitution is applicable only when circuit design permits reduced brightness and when PCB layout accommodates 5mm round package geometry.

Orange LED Alternatives: Broadcom HLMP-EJ Series HLMP-EJ08-WZ000, HLMP-EJ08-X1000, HLMP-EJ08-Y2000, and HLMP-EJ10-XZ0DD are orange 605nm LEDs from Broadcom Limited. These parts are active product status with ROHS3 compliance and maintain T-1 3/4 through-hole radial package format. Forward voltage is 1.98V, requiring circuit verification for compatibility with existing resistor networks. Orange wavelength substitution is applicable only when circuit design permits color change from yellow to orange and when optical filtering or color-specific requirements do not restrict wavelength shift. Brightness ratings range from 10750mcd to 18150mcd, exceeding original 7500mcd specification.

Frequently Asked Questions (FAQ)

Q: Can TLCY6100 be used as a direct replacement for TLCY5100 without circuit modification? A: Yes. TLCY6100 shares identical electrical specifications with TLCY5100: 590nm wavelength, 2.1V forward voltage, 7500mcd brightness, and 18° viewing angle. The reduced maximum height (9.00mm vs 13.20mm) improves PCB clearance. No resistor or current-limiting network changes are required.

Q: What is the impact of forward voltage difference between TLCY5100 (2.1V) and Everlight yellow LEDs (2.0V)? A: The 0.1V reduction affects current-limiting resistor calculations. For a given supply voltage and target LED current, the resistor value must be recalculated using Ohm's law: R = (Vsupply - Vf) / Iled. A 0.1V reduction in forward voltage increases current through a fixed resistor by approximately 5-10%, depending on supply voltage. Verify that the LED current remains within the 20mA test specification for Everlight parts.

Q: Are orange LEDs (HLMP-EJ series) compatible with yellow LED circuit designs? A: Orange LEDs are compatible only if the circuit design permits wavelength shift from 590nm (yellow) to 605nm (orange). Applications with color-specific requirements, optical filters, or human-machine interface color coding must retain yellow emission. Additionally, the 1.98V forward voltage of orange LEDs differs from the original 2.1V, requiring resistor network recalculation.

Q: What is the mechanical compatibility of 5mm round package LEDs with T-1 3/4 through-hole designs? A: 5mm round package LEDs (151053YS04500, Everlight 333-2UYC and 383-2UYC series) have different mechanical form factors than T-1 3/4 packages. PCB footprint, lead spacing, and mounting hole diameter differ. Mechanical compatibility requires PCB redesign or use of adapter components. T-1 3/4 package substitutes (TLCY6100, 7383-Y7C3-AQSB-P-MS, Broadcom HLMP-EJ series) maintain original mechanical envelope.

Q: Do all substitute parts meet RoHS3 compliance? A: Yes. All listed substitute parts carry ROHS3 Compliant certification. TLCY5100 is also ROHS3 compliant. Moisture sensitivity level is 1 (Unlimited) for all parts, indicating no special moisture handling requirements during storage or assembly.

Q: Which substitute provides the closest electrical and mechanical match to TLCY5100? A: TLCY6100 provides the closest match. Both parts are manufactured by Vishay Semiconductor Opto Division with identical electrical specifications (590nm, 2.1V, 7500mcd, 18° viewing angle) and T-1 3/4 through-hole radial package format. TLCY6100 is active product status, ensuring long-term availability.

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