RI21-T, BeO.
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| Temperature Coefficient | ||||||||||||
| Model | Temperature Range | |||||||||||
| -55°C~20°C | 20°C~125°C | |||||||||||
| RI21 | ≤±500PPM/°C | ≤±300PPM/°C | ||||||||||
| RI21-T | ≤±300PPM/°C | ≤±300PPM/°C | ||||||||||

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| Power(W) | Model | Figure | Dimensions(mm) | ||||||
| A±0.2 | B±0.2 | E | H(min) | G(max) | W±0.15 | L±0.5 | |||
| 0.125W | RI21 | 1 | 3 | 1.2 | 0.05 | N/A | 1 | 0.7 | 4.5 |
| 0.25W | 1 | 4.5 | 1.5 | 0.05 | N/A | 1 | 1.1 | 5 | |
| 0.5W | 1 | 6 | 2 | 0.12 | N/A | 1.3 | 1.2 | 5 | |
| Power(W) | Model | Figure | Dimensions(mm) | ||||||
| A±0.2 | B±0.2 | E | H(min) | G(max) | W±0.15 | L±0.5 | |||
| 0.5W | RI21-T1 | 1 | 2 | 1 | 0.12 | N/A | 1.2 | 0.7 | 2 |
| 0.5W | RI21-T2 | 1 | 2 | 1 | 0.12 | N/A | 1.2 | 0.7 | 1.5 |
| 0.5W | RI21-T3 | 2 | 2 | 1 | 0.12 | 0.5 | 0.8 | 0.7 | 1.5 |