* 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

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.

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

Typical Characteristics

Recom.

Op. If

(mA)

Epoxy & Type

Color

Order Code

Peak

Vf (V)

Iv (mcd)

2

Θ

1/2

λ (nm)

@If=20mA

@If=2 mA

(Deg)

TInted Diffused

Red

I

639

1.8

4.0

50

2 - 10

Green

G

575

1.7

2.5

60

2 - 10

Yellow

Y

591

1.85

4.0

45

2 - 10

4.3 (0.17)

Anode typ

5.08

2.54

2.54

9.0(.355)

4.0

3 typ

5.08

2.54

9.65

3.5 min

(typ for bi-color)

Green

Anode

Red or

yellow

Anode

+

–

(Pinout for single color)

IDEA

LED 1

LED 2

IDEA