DS9840 OSRAM, DS9840 Datasheet - Page 32

• Manufacturer Part Number: DS9840
• Description: LAMP, DULUX, S, COOL, 9W
• Manufacturer: OSRAM

Specifications of DS9840

• Supply Voltage: 60V
• Base Type: 2 Pin
• Power Rating: 9W
• Luminous Flux: 600lm
• Length: 167mm
• Colour Temperature Typ: 4000K
• Svhc: No SVHC (15-Dec-2010)
• External Depth: 19.5mm
• External Diameter: 19.5mm
• External: RoHS Compliant
• Lamp Base Type: 2 Pin
• Rohs Compliant: Yes
• Average Bulb Life: 8000h
• Bulb Diameter: 19.5mm

Economical long-life light sources with plug-in bases.
Compact Fluorescent Lamps OSRAM DULUX
Technical Guide
2.4
2.4.1 Definitions
Lamp life and
loss of
luminous flux
Typical failure distributions are shown in mortality curves.
Because of chemical changes in the phosphor, the luminous flux of a fluorescent lamp
decreases as the lamp ages. The term „maintenance“ is used to indicate how well
luminous flux is retained throughout the life of the lamp. The loss of luminous flux for
the trichrome phosphors (LUMILUX
The mortality and luminous flux curves for OSRAM DULUX
following pages.
There are several definitions of lamp life and these are applied differently depending
on the type of lamp, the lamp manufacturer and the geographical region. The most
important definitions for compact fluorescent lamps are given below.
Lamp life is the period of time during which a lamp can be operated until it is un-
usable (electrical failure, too little light).
Average rated lamp life is the average value of the life values of individual lamps
operated under standardised conditions (50 % failure). In other words, this is the
period of time in which for a standardised 3-hour switching cycle (165 minutes on/15
minutes off in accordance with IEC 60901) 50 % of the lamps fail.
OSRAM DULUX
OSRAM DULUX
OSRAM DULUX
OSRAM DULUX
OSRAM DULUX
OSRAM DULUX
®
®
®
®
®
S, D and T,
S/E, D/E and T/E with CCG
S/E, D/E and T/E with ECG
L and F with CCG
L and F with ECG
®
lamps
®
®
) used in OSRAM DULUX
®
lamps are shown on the
Average rated lamp life
8.000 h
10.000 h
8.000 h
10.000 h
®
lamps is around 15 %.
2. Lamp data
31