T-1, (3-mm) Round, Bi-level PCB Mount
LED Indicator, J478B Series
The J478B is a popular indicator in LAN hubs and network controllers. Designed to save panel space, the assembly measures just over
4.3 mm(0.170") in width and can be CMOS driven to save components. Long arrays should be located on a pitch of 4.4 mm(0.173") to
avoid crowding and tolerance build-up. This series can also be supplied with pinout reversed from that shown by adding “-RL” to the
order code of the part number.
4.3 (0.17)
4.0
3 typ
IDEA
2.54
Anode typ
2.54
5.08
9.0(.355)
9.65
LED 1
IDEA
3.5 min
LED 2
Red or
yellow
Anode
5.08
2.54
Green
Anode
+ –
(Pinout for single color)
(typ for bi-color)
Specify part desired as follows:
J478B/Order Code LED1 + Order Code LED 2
For example:
“J478B/H+G” designates an assembly with a red LED on top and a green LED on the bottom.
“J478B/(H+G)-RL” designates the same assembly with leads reversed.
ORDER CODE AND INFORMATION (ALL RATINGS AT 25°C AMBIENT)
LED Lamp
Epoxy & Type
Color
Order Code
Peak
λ
(nm)
639
575
591
Typical Characteristics
Vf
(V)
@If=20mA
1.8
1.7
1.85
Iv
(mcd)
@If=2 mA
4.0
2.5
4.0
2
Θ
1/2
(Deg)
50
60
45
Recom.
Op. If
(mA)
Red
TInted Diffused
Green
Yellow
I
G
Y
2 - 10
2 - 10
2 - 10
* Specifications subject to change without notice. Dimensions are in mm±0.25 unless stated otherwise.
IDEA, Inc., 1351 Titan Way, Brea, CA 92821 Ph:714-525-3302, 800-LED-IDEA; Fax: 714-525-3304 Catalog 995A
IDEA [ IDEA.LNC. ]
