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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L9966 датащи(PDF) 11 Page - STMicroelectronics |
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L9966 датащи(HTML) 11 Page - STMicroelectronics |
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11 / 122 page  5.5 Temperature ranges and thermal data Table 6. Temperature ranges and thermal data Symbol Parameter Test condition Min Typ Max Unit Notes Tj (1) Operating junction temperature – -40 – 150 °C – Tstg Storage temperature – -55 150 °C – RTh j-a (2) Thermal resistance junction-to-ambient – – 31 – °C/W Homogeneous internal power distribution (3) RTh j-cb (2) Thermal resistance junction-to-case-bottom – – 3 – °C/W Homogeneous internal power distribution 1. All parameters are guaranteed, and tested, in the temperature range Tj -40 to 150 °C unless otherwise specified. 2. Not subject to production test, guaranteed by design. 3. RTh j-a value is retrieved according to Jedec JESD51-2,-5,-7 guideline with a 2s2p board. Figure 4. 2s2p PCB with thermal vias GADG2702170724PS 2s2p PCB + vias ΘJ-A (2s2p) Note: In “2s2p”, the “s” suffix stands for “Signal” and the number before indicates how many PCB layers are dedicated to signal wires. The “p” suffix stands for “Power” and the number before indicates how many PCB layers are dedicated to power planes. L9966 Temperature ranges and thermal data DS12459 - Rev 10 page 11/122 |
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