HDSP-078 HP [Agilent(Hewlett-Packard)], HDSP-078 Datasheet - Page 5

• Manufacturer Part Number: HDSP-078
• Description: Glass/Ceramic Numeric and Hexadecimal Displays for Industrial Applications
• Manufacturer: HP [Agilent(Hewlett-Packard)]

Absolute Maximum Ratings
Mechanical
These displays are hermetically
sealed for use in environments
that require a high reliability
device. These displays are
designed and tested to meet a
helium leak rate of
5 x 10
These displays may be mounted
by soldering directly to a printed
circuit board or insertion into a
socket. The lead-to-lead pin
spacing is 2.54 mm (0.100 inch)
and the lead row spacing is 15.24
mm (0.600 inch). These displays
may be end stacked with 2.54
mm (0.100 inch) spacing
between outside pins of adjacent
displays. Sockets such as Augat
324-AG2D (3 digits) or Augat
Storage Temperature, Ambient
Operating Temperature, Ambient
Forward Current, Each LED
Reverse Voltage, Each LED
-8
cc/sec.
Description
508-AG8D (one digit, right angle
mounting) may be used.
The primary thermal path for
power dissipation is through the
device leads. Therefore, to insure
reliable operation up to an
ambient temperature of +100 C,
it is important to maintain a
base-to-ambient thermal
resistance of less than
35 C watt/device as measured on
top of display pin 3.
For further information on
soldering and post solder
cleaning, see Application Note
1027, Soldering LED
Components.
Symbol
T
T
V
I
F
A
R
S
Min
–65
–55
+125
+100
Max
10
5
Unit
mA
V
C
C
5
Preconditioning
These displays are 100% pre-
conditioned by 24 hour storage at
125 C, at 100 C for the HDSP-
098x Series.
Contrast Enhancement
These display devices are
designed to provide an optimum
ON/OFF contrast when placed
behind an appropriate contrast
enhancement filter. For further
information on contrast
enhancement, see Application
Note 1015, Contrast
Enhancement for LED
Displays.
Over Range Display
The over range devices display
“ 1” and decimal point. The
character height and package
configuration are the same as the
numeric and hexadecimal
devices. Character selection is
obtained via external switching
transistors and current limiting
resistors.