SPEC NO: DSAF7181 REV NO: V.8A DATE: AUG/20/2016 PAGE: 1 OF 6
APPROVED: Wynec CHECKED: Allen Liu DRAWN: L.T.Zhang ERP: 1102000502
3.4mm RIGHT ANGLE LED INDICATOR
Part Number: WP138A8QMP/SRD/TG
Super Bright Red
Features
zSurface mount type.
zBlack case enhances contrast ratio.
zWide viewing angle.
zHigh reliability life measured in years.
zPackage:1000pcs / reel.
zMoisture sensitivity level : level 3.
zHousing UL rating:94V-0.
zHousing material: PPA.
zHigh temperature resistant housing.
zHigh glass transition temperature epoxy.
zRoHS compliant.
Descriptions
zThe Super Bright Red source color devices are made
with Gallium Aluminum Arsenide Red Light Emitting
Diode.
zElectrostatic discharge and power surge could damage
the LEDs.
zIt is recommended to use a wrist band or anti-
electrostatic glove when handling the LEDs.
zAll devices, equipments and machineries must be
electrically grounded.
Package Dimensions
Notes:
1. All dimensions are in millimeters (inches).
2. Tolerance is ±0.25(0.01") unless otherwise noted.
3. The specifications, characteristics and technical data described in the datasheet are subject to change without prior notice.
ATTENTION
OBSERVE PRECAUTIONS
FOR HANDLING
ELECTROSTATIC
DISCHARGE
SENSITIVE
DEVICES
SPEC NO: DSAF7181 REV NO: V.8A DATE: AUG/20/2016 PAGE: 2 OF 6
APPROVED: Wynec CHECKED: Allen Liu DRAWN: L.T.Zhang ERP: 1102000502
Selection Guide
Absolute Maximum Ratings at TA=25°C
Electrical / Optical Characteristics at TA=25°C
Part No. Emitting Color (Material) Lens Type
Iv (mcd) [2]
@ 20mA
Viewing
Angle [1]
Min. Typ. 2θ1/2
WP138A8QMP/SRD/TG Super Bright Red (GaAlAs) Red Diffused
150 300
*40 *90
40°
Symbol Parameter Emitting Color Typ. Max. Units Test Conditions
λpeak Peak Wavelength Super Bright Red 655 nm IF=20mA
λD [1] Dominant Wavelength Super Bright Red 640 nm IF=20mA
Δλ1/2 Spectral Line Half-width Super Bright Red 20 nm IF=20mA
C Capacitance Super Bright Red 45 pF VF=0V;f=1MHz
VF [2] Forward Voltage Super Bright Red 1.85 2.5 V IF=20mA
IR Reverse Current Super Bright Red 10 uA VR = 5V
Parameter Values Units
Power dissipation 75 mW
DC Forward Current 30 mA
Peak Forward Current [1] 155 mA
Reverse Voltage 5 V
Operating/Storage Temperature -40°C To +85°C
Notes:
1. θ1/2 is the angle from optical centerline where the luminous intensity is 1/2 of the optical peak value.
2. Luminous intensity / luminous Flux: +/-15%.
* Luminous intensity value is traceable to CIE127-2007 standards.
Notes:
1. Wavelength: +/-1nm.
2. Forward Voltage: +/-0.1V.
3. Wavelength value is traceable to CIE127-2007 standards.
4. Excess driving current and / or operating temperature higher than recommended conditions may result in severe light degradation or
premature failure.
Notes:
1. 1/10 Duty Cycle, 0.1ms Pulse Width.
2. Relative humidity levels maintained between 40% and 60% in production area are recommended to avoid the build-up of static
electricity – Ref JEDEC/JESD625-A and JEDEC/J-STD-033.
SPEC NO: DSAF7181 REV NO: V.8A DATE: AUG/20/2016 PAGE: 3 OF 6
APPROVED: Wynec CHECKED: Allen Liu DRAWN: L.T.Zhang ERP: 1102000502
Super Bright Red WP138A8QMP/SRD/TG
SPEC NO: DSAF7181 REV NO: V.8A DATE: AUG/20/2016 PAGE: 4 OF 6
APPROVED: Wynec CHECKED: Allen Liu DRAWN: L.T.Zhang ERP: 1102000502
WP138A8QMP/SRD/TG
Recommended Soldering Pattern
(Units : mm; Tolerance: ± 0.1)
Tape Dimensions
(Units : mm)
Reel Dimension
SPEC NO: DSAF7181 REV NO: V.8A DATE: AUG/20/2016 PAGE: 5 OF 6
APPROVED: Wynec CHECKED: Allen Liu DRAWN: L.T.Zhang ERP: 1102000502
PACKING & LABEL SPECIFICATIONS WP138A8QMP/SRD/TG
Terms and conditions for the usage of this document
1. The information included in this document reflects representative usage scenarios and is intended for technical reference only.
2. The part number, type, and specifications mentioned in this document are subject to future change and improvement without
notice. Before production usage customer should refer to the latest datasheet for the updated specifications.
3. When using the products referenced in this document, please make sure the product is being operated within the environmental
and electrical limits specified in the datasheet. If customer usage exceeds the specified limits, Kingbright will not be responsible
for any subsequent issues.
4. The information in this document applies to typical usage in consumer electronics applications. If customer's application has
special reliability requirements or have life-threatening liabilities, such as automotive or medical usage, please consult with
Kingbright representative for further assistance.
5. The contents and information of this document may not be reproduced or re-transmitted without permission by Kingbright.
6. All design applications should refer to Kingbright application notes available at http://www.KingbrightUSA.com/ApplicationNotes
SPEC NO: DSAF7181 REV NO: V.8A DATE: AUG/20/2016 PAGE: 6 OF 6
APPROVED: Wynec CHECKED: Allen Liu DRAWN: L.T.Zhang ERP: 1102000502
