Product Overview
The H21A_ and H22A_ series are single-channel optoelectronic slotted interrupter switches featuring a Gallium Arsenide infrared emitting diode and an NPN silicon phototransistor. Designed with a polycarbonate housing, these devices offer optimized mechanical resolution, coupling efficiency, ambient light rejection, and reliability. They operate by interrupting infrared light transmission with opaque objects, switching the output from an "ON" state to an "OFF" state. Key advantages include high gain and a 3mm gap between the LED and detector, with the polycarbonate case providing protection against ambient light. These switches are suitable for applications in copiers, printers, facsimilies, record players, cassette decks, and as general optoelectronic switches.
Product Attributes
- Brand: ISOCOM COMPONENTS LTD
- Model Series: H21A_, H22A_
- Material: Polycarbonate housing
- Origin: England
Technical Specifications
| Parameter | H21A1/H22A1 | H21A2/H22A2 | H21A3/H22A3 | Units | Test Condition |
| Input Forward Voltage (VF) | 1.2 | 1.2 | 1.2 | V | IF = 50mA |
| Input Reverse Voltage (VR) | 5 | V | IR = 100A | ||
| Input Reverse Current (IR) | 100 | A | VR = 5V | ||
| Output Collector-emitter Breakdown (BVCEO) | 30 | V | IC = 1mA | ||
| Output Emitter-collector Breakdown (BVECO) | 5 | V | IE = 100A | ||
| Output Collector-emitter Dark Current (ICEO) | 100 | nA | VCE = 10V | ||
| Coupled On-State Collector Current (IC(ON)) | 0.15 | 0.3 | 0.6 | mA | IF = 5mA, VCE = 5V |
| Coupled On-State Collector Current (IC(ON)) | 1.0 | 2.0 | 4.0 | mA | IF = 20mA, VCE = 5V |
| Coupled On-State Collector Current (IC(ON)) | 1.9 | 3.0 | 5.5 | mA | IF = 30mA, VCE = 5V |
| Collector-emitter Saturation Voltage (VCE(SAT)) | 0.4 | 0.4 | 0.4 | V | IF = 30mA, IC = 1.8mA |
| Turn-on Time (ton) | 8 | s | VCC = 5V, IF = 30mA, RL = 2.5k | ||
| Turn-off Time (toff) | 50 | s | VCC = 5V, IF = 30mA, RL = 2.5k | ||
Absolute Maximum Ratings
| Parameter | Rating | Units |
| Storage Temperature | -40 to +85 | C |
| Operating Temperature | -25 to +85 | C |
| Lead Soldering Temperature | 260 | C |
| Input Diode Forward Current | 50 | mA |
| Input Diode Reverse Voltage | 5 | V |
| Input Diode Power Dissipation | 75 | mW |
| Output Transistor Collector-emitter Voltage (BVCEO) | 30 | V |
| Output Transistor Emitter-collector Voltage (BVECO) | 5 | V |
| Output Transistor Collector Current (IC) | 20 | mA |
| Output Transistor Power Dissipation | 75 | mW |
2410121904_ISOCOM-H22A1_C150418.pdf
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