EVERLIGHT ELECTRONICS CO., LTD.
DEVICE NUMBER : DIR-325-073 REV : 1.2
ECN : PAGE : 1/8
3mm Infrare d LED ,T-1
MODEL NO : IR3254-A
Features :
High radiant intensity
Peak wavelength p=940nm
View angle 30
High reliability
2.54mm Lead spacing
Description :
EVERLIGHT’s Infrared Emitting Diode (IR3254-A) is a high intensity diode, molded
in a blue transparent plastic package.
The device is spectrally matched with phototransistor, photodiode and infrared receiver
module.
Applications :
Free air transmission system
Optoelectronic switch
Floppy disk drive
Infrared applied system
Smoke detector
CHIP
PART NO. MATERIAL LENS COLOR
IR GaAlAs Blue
EVERLIGHT ELECTRONICS CO., LTD.
DEVICE NUMBER : DIR-325-073 REV : 1.2
ECN : PAGE : 2/8
3mm Infrare d LED ,T-1
MODEL NO : IR3254-A
Package Dimensions :
Notes :
1.All d imensions are in millim eter.
2.Protruded resin under flange 1.5 mm Max.
3.Lead spacing is measured where the lead emerge from the package.
4.Lens colorBlue transparen t.
5.Above spe c if ication may be changed without notice. EVERLIGHT will reserve authority
on material change for above specification.
6.These specification sheets include materials protected under copyright of EVERLIGHT
corporation . Please don’t reproduce or cause anyone to reproduce them without
EVERLIGHT’s consent.
7.When using this product , please observe the absolute maximum ratings and the
instructions for use outlined in these specification sheets. EVERIGHT assumes no
responsibility for any damage resulting from use of the product which does not comply
with the absolute maximum ratings and the instructions included in these specification
sheets.
EVERLIGHT ELECTRONICS CO., LTD.
DEVICE NUMBER : DIR-325-073 REV : 1.2
ECN : PAGE : 3/8
3mm Infrare d LED ,T-1
MODEL NO : IR3254-A
Absolute Maximum Ratings at Ta = 25
Parameter Symbol Rating Unit Notice
Continuous Forward Current IF50 mA
Peak Forward Current
Pulse width=100s, Duty cycle=1IFP 1.0 A
Reverse Voltage VR5V
Operating Temperature Topr -40 ~ +85
Storage Temperature Tstg -40 ~ +85
Soldering Temperature Tsol 260 4mm from mold
body less than
5 seconds
Power Dissipation at(or below)
25Free Air Tempera tur e Pd 100 
Electronic Optical Characteristics :
Parameter Symbol Min. Typ. Max. Unit Condition
4.0 8.0 ---- IF=20mA
---- 4.0 ---- IF=100mA,tp=100s, tP/T=0.01
Radiant I ntensity Ee ---- 400 ---- mW/sr IF=1A,tp=100s, tP/T=0.01
Peak Wavelength P---- 940 ---- nm IF=20mA
Spectral
Bandwidth  ---- 45 ---- nm IF=20mA
---- 1.2 1.5 IF=20mA
---- 1.4 1.85 IF=100mA,tp=100s, tP/T=0.01
Forward Voltage VF---- 2.6 4.0 VIF=1A,tp=100s, tP/T=0.01
Reverse Current IR---- ---- 10 AVR=5V
View Angle 21/2 ---- 30 ---- deg IF=20mA
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EVERLIGHT ELECTRONICS CO., LTD.
DEVICE NUMBER : DIR-325-073 REV : 1.2
ECN : PAGE : 4/8
3mm Infrare d LED ,T-1
MODEL NO : IR3254-A
Typical Electrical/Optical/Characteristics Curves
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EVERLIGHT ELECTRONICS CO., LTD.
DEVICE NUMBER : DIR-325-073 REV : 1.2
ECN : PAGE : 5/8
3mm Infrare d LED ,T-1
MODEL NO : IR3254-A
Typical Electrical/Optical/Characteristics Curves
EVERLIGHT ELECTRONICS CO., LTD.
DEVICE NUMBER : DIR-325-073 REV : 1.2
ECN : PAGE : 6/8
3mm Infrare d LED ,T-1
MODEL NO : IR3254-A
Reliability Test It em And Conditi on
The relia bility of products shall be satisf ied with items listed below.
Confidence level:90%
LTPD:10%
NO. Item Test Conditions Test
Hours/
Cycles
Sample
Size Failure
Judgement
Criteria
Ac/Re
1 Solder Heat TEMP : 2 60 ± 5 5 secs 22 pcs 0/1
H : +85 30 mins
2 Temperature Cycle 5 mins 50 cycles 22 pcs
IR 2
 0.8
VF 1.2 0/1
L : -55 30 mins
H : +100 5 mins U :Upper
specification
limit
3 Thermal Shock 10 secs 50 cycles 22 pcs L :Lower
specification
limit
0/1
L : -10 5 mins
4 High Temperature
Storage TEMP. : +1001000 hrs 22 pcs 0/1
5 Low Temperature
Storage TEMP. : -551000 hrs 22 pcs 0/1
6 DC Operating Life IF=20mA 1000 hrs 22 pcs 0/1
7 High Temperature /
High Humidity 85 / 85% R.H. 1000 hrs 22 pcs 0/1
EVERLIGHT ELECTRONICS CO., LTD.
DEVICE NUMBER : DIR-325-073 REV : 1.2
ECN : PAGE : 7/8
3mm Infrare d LED ,T-1
MODEL NO : IR3254-A
Test Method For Power :
Condition : 
Test Item : 
Unit : mW/sr
To Distinguish Intensity:
Condition:IF=20mA Unit : mW/sr
Bin Number K L M N
Min 4.0 5.6 7.8 11.0
Max 6.4 8.9 12.5 17.6
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EVERLIGHT ELECTRONICS CO., LTD.
DEVICE NUMBER : DIR-325-073 REV : 1.2
ECN : PAGE : 8/8
3mm Infrare d LED ,T-1
MODEL NO : IR3254-A
Packing Specifications
CPN : Customer’s Production Number
P/N : Production Number
QTY : Packing Quantity
CAT : Ranks
HUE : Peak Wav ele ngth
REF : Reference
LOT NO : Lot Number
MADE IN TAIWAN : Production pl ace
Packing Quantity Specification
1. 1000 Pcs/1Bag4 Bags/1Box
2. 10 Boxes/1Carton
IR3254-A