0.040 (1.02)

0.100 (2.54)

0.050 (1.27)

45°

0.040 (1.02)

13

0.030 (0.76)

NOM

0.184 (4.67)

0.209 (5.31)

1.00 (25.4)

MIN

0.255 (6.48)

ANODE

(CASE)

Ø0.020 (0.51) 2X

PACKAGE DIMENSIONS

FEATURES

• Good optical to mechanical alignment

• Mechanically and wavelength matched to the TO-18 series phototransistor

• Hermetically sealed package

• High irradiance level

NOTES:

1. Dimensions for all drawings are in inches (mm).

2. Tolerance of ± .010 (.25) on all non-nominal dimensions

unless otherwise specified.

DESCRIPTION

The LED55B/LED55C/LED56 are 940 nm LEDs in a narrow angle, TO-46 package.

ANODE

(Connected

To Case)

3

1

CATHODE

SCHEMATIC



 2001 Fairchild Semiconductor Corporation

DS300312

6/05/01

1 OF 4

www.fairchildsemi.com

GaAs INFRARED EMITTING DIODE

LED55B

LED55C

LED56