024
LED Middle POWER
K140SZRxx Series
BNC-OD-C131/A4
Created Date: 03/01/2013
Revision: 16, 06/06/2014
(A) Recommended circuit.
(B) The brightness of each LED might appear different due to the differences in the I-V characteristics
of those LEDs.
10.5 ESD (Electrostatic Discharge)
Static Electricity or power surge will damage the LED. Suggestions to prevent ESD damage:
Use of a conductive wrist band or anti-electrostatic glove when handling these LEDs.
All devices, equipment, and machinery must be properly grounded.
Work tables, storage racks, etc. should be properly grounded.
Use ion blower to neutralize the static charge which might have built up on surface of the
LED’s plastic lens as a result of friction between LEDs during storage and handling.
ESD-damaged LEDs will exhibit abnormal characteristics such as high reverse leakage current, low
forward voltage, or “no lightup” at low currents.To verify for ESD damage, check for “light up” and Vf of
the suspect LEDs at low currents.The Vf of “good” LEDs should be >2.0V@0.1mA for InGaN product and
>1.4V@0.1mA for AlInGaP product.
10.6 Suggested Checking List:
Training and Certification
1. Everyone working in a static-safe area is ESD-certified?
2. Training records kept and re-certification dates monitored?
Static-Safe Workstation & Work Areas
1. Static-safe workstation or work-areas have ESD signs?
2. All surfaces and objects at all static-safe workstation and within 1 ft measure less
than 100V?
3. All ionizer activated, positioned towards the units?
4. Each work surface mats grounding is good?
Personnel Grounding
1. Every person (including visitors) handling ESD sensitive (ESDS) items wear wrist strap,
heel strap or conductive shoes with conductive flooring?
2. If conductive footwear used, conductive flooring also present where operator stand
or walk?