H21A1 Overview
Key Specifications
Mount Type: Through Hole
Pins: 4
Height: 11 mm
Length: 24.7 mm
Description
The H21A1, H21A2 and H21A3 consist of a gallium arsenide infrared emitting diode coupled with a silicon phototransistor in a plastic housing. The packaging system is designed to optimize the mechanical resolution, coupling efficiency, ambient light Ø 0.133 (3.4) Ø 0.126 (3.2) (2X) C L 0.39 (1.00) 0.34 (0.85) 0.755 (19.2) 0.745 (18.9) .073 (1.85) .133 (3.38) 0.129 (3.3) 0.119 (3.0) Optical C L rejection, cost and reliability.
Key Features
- Opaque housing
- 035” apertures
- Derate power dissipation linearly 1.33 mW/°C above 25°C
- RMA flux is recommended
- Methanol or isopropyl alcohols are recommended as cleaning agents
