5mm Round Standard T-1 3/4 With Flange Type White LED Technical Data Sheet Part No.: LL-54WC2E-W2-3TC Spec No.:B58 X335 Rev No.: V.2 Date: Jun/16/26 Page: 1 OF 8
Features: Popular T-1 3/4 diameter package. Choice of various viewing angles. Viewing angle=15. Reliable and robust. Emission color: X=.28, y=.29. Industrial standard footprint. The product itself will remain within RoHS compliant version. Descriptions: The series is specially designed for applications requiring higher brightness. The LED lamps are available with different colors, intensities. The white LED which was fabricated using a blue LED and a phosphor,and the phosphor is excited by blue light and emits yellow fluorescence.the mixture of blue light and yellow light results in white emission. Utilizing advanced InGaN chip technology. Applications: QA equipment. Backlighting of LCD. Automotive equipment. Replacement of conventional Light bulbs and fluorescent lamps. Indoor and out door displays, etc. Spec No.:B58 X335 Rev No.: V.2 Date: Jun/16/26 Page: 2 OF 8
Package Dimension: Part No. Chip Material Lens Color Source Color LL-54WC2E-W2-3TC InGaN Water Clear White Notes: 1. All dimensions are in millimeters (inches). 2. Tolerance is ±.25 mm (.1 ) unless otherwise noted. 3. Protruded resin under flange is 1. mm (.39 ) max. Spec No.:B58 X335 Rev No.: V.2 Date: Jun/16/26 Page: 3 OF 8
Absolute Maximum Ratings at Ta=25 Parameters Symbol Max. Unit Power Dissipation PD 1 mw Peak Forward Current (1/1 Duty Cycle,.1ms Pulse Width) IFP 1 ma Forward Current IF 25 ma Reverse Voltage VR 5 V Operating Temperature Range Topr -4 to +8 Storage Temperature Range Tstg -4 to +85 Lead Soldering Temperature [4mm (.157 ) From Body] Tsld 26 for 5 Seconds Notes: 1. Proper current derating must be observed to maintain junction temperature below the maximum. 2. LEDs are not designed to be driven in reserve bias. Electrical Optical Characteristics at Ta=25 Parameters Symbol Min. Typ. Max. Unit Test Condition Viewing Angle 2θ 1/2 --- 15 -- Deg IF =2mA Forward Voltage V F 2.8 3.3 3.8 V IF =2mA Reverse Current I R --- --- 1 µa V R =5V Chromaticity Coordinates x ---.28 --- --- y ---.29 --- --- IF =2mA Luminous Intensity Iv 14 25 --- mcd IF =2mA Notes: 1. Luminous Intensity Measurement allowance is ± 1%. 2. θ 1/2 is the off-axis angle at which the luminous intensity is half the axial luminous intensity. Spec No.:B58 X335 Rev No.: V.2 Date: Jun/16/26 Page: 4 OF 8
CIE 1931 Chromaticity Diagram IF=2mA.Ta=25 Bin code x y Color(K) Bin code x y Color(K) B.255.247 2 H.263.237 2 C.268.27 16 I.275.259 16 D.281.293 1 J.288.279 1 E.294.315 8 K.299.3 8 F.37.339 7 L.311.321 7 G.32.361 6 M.323.341 6 Mcasurcmcnt unccrtainty of the color coordinats : ±.1. Spec No.:B58 X335 Rev No.: V.2 Date: Jun/16/26 Page: 5 OF 8
Reliability Test Items And Conditions: The reliability of products shall be satisfied with items listed below: Confidence level: 9%. LTPD: 1%. 1) Test Items and Results: Test Item Resistance to Soldering Heat Solder ability Thermal Shock Temperature Cycle Moisture Resistance Cycle High Temperature Storage Terminal Strength (Pull test) Terminal Strength (bending test) Temperature Humidity Storage Low Temperature Storage Steady State Operating Life Steady State Operating Life of High Humidity Heat Steady State Operating Life of Low Temperature Standard Test Method 3 32 3 33 3 37 1 15 2 23 2 21 4 41 4 41 1 13 2 22 Test Conditions Tsld=26±5, 1sec 4mm from the base of the epoxy bulb Tsld=235±5, 5sec(using flux) Note Number of Damaged 1 time /1 1time over 95% /1 ~1 15sec, 15sec 1 cycles /1-4 ~25 ~1 ~25 3min,5min,3min,5min 25 ~65 ~-1 9%RH 24hrs/1cycle 1 cycles /1 1 cycles /1 Ta=1 1hrs /1 Load 1N (1kgf) 1±1sec Load 5N (.5kgf) ~9 ~ bend 2 times No noticeable damage No noticeable damage /1 /1 Ta=6, RH=9% 1hrs /1 Ta=-4 1hrs /1 Ta=25, IF=3mA 1hrs /1 Ta=6, RH=9%, IF=3mA 5hrs /1 Ta=-3, IF=2mA 1hrs /1 2) Criteria For Judging The Damage: Item Symbol Test Conditions Criteria for Judgment Min Max Forward Voltage VF IF=2mA --- F.V.*) 1.1 Reverse Current IR VR=5V --- F.V.*) 2. Luminous Intensity IV IF=2mA F.V.*).7 --- *) F.V.: First Value. Spec No.:B58 X335 Rev No.: V.2 Date: Jun/16/26 Page: 6 OF 8
Typical Electrical / Optical Characteristics Curves (25 Ambient Temperature Unless Otherwise Noted) Relative Luminous Intensity (%) Relative Luminous Intensity (%) Forward Current IF (ma) 1 8 6 4 2 Spectrum Distribution Ta=25 C 4 45 5 55 6 65 7 Wavelength λp (nm) 1 1 1 Luminous Intensity & Ambient Temperature 1-6 -4-2 2 4 6 8 1 Ambient Temperature Ta ( ) Forward Current Derating Curve 5 4 3 25 2 1 2 4 6 8 1 Ambient Temperature Ta ( ) Forward Current & Forward Voltage Forward Current IF (ma) 5 4 3 2 1 2.8 3. 3.2 3.4 3.6 3.8 4. Forward Voltage VF (V) Luminous Intensity & Forward Current Relative Luminous Intensity (%) 1..9.8.7 1 1 1 1 1.5 Ta=25 f=1khz Duty=1/1 1 1 1 2 1 3 Forward Current IF (ma).3 o Ta=25 C Radiation Diagram 1 o 2 o 3 o.1.2.4.6 4 o 5 o 6 o 7 o 8 o 9 o Spec No.:B58 X335 Rev No.: V.2 Date: Jun/16/26 Page: 7 OF 8
Please read the following notes before using the datasheets: 1. Over-current-proof Customer must apply resistors for protection, otherwise slight voltage shift will cause big current change (Burn out will happen). 2. Storage 2.1 Do not open moisture proof bag before the products are ready to use. 2.2 Before opening the package, the LEDs should be kept at 3 or less and 9%RH or less. 2.3 The LEDs should be used within a year. 2.4 After opening the package, the LEDs should be kept at 3 or less and 7%RH or less. 2.5 The LEDs should be used within 168 hours (7 days) after opening the package. 3. Soldering Condition 3.1 Pb-free solder temperature profile. 3.2 Reflow soldering should not be done more than two times. 3.3 When soldering, do not put stress on the LEDs during heating. 3.4 After soldering, do not warp the circuit board. 4. Soldering Iron Each terminal is to go to the tip of soldering iron temperature less than 26 for 5 seconds within once in less than the soldering iron capacity 25W. Leave two seconds and more intervals, and do soldering of each terminal. Be careful because the damage of the product is often started at the time of the hand solder. 5. Repairing Repair should not be done after the LEDs have been soldered. When repairing is unavoidable, a double-head soldering iron should be used (as below figure). It should be confirmed beforehand whether the characteristics of the LEDs will or will not be damaged by repairing. 6. Caution in ESD Static Electricity and surge damages the LED. It is recommend to use a wrist band or anti-electrostatic glove when handling the LED. All devices equipment and machinery must be properly grounded. Spec No.:B58 X335 Rev No.: V.2 Date: Jun/16/26 Page: 8 OF 8