The recommended footprint and land pattern for the TP1.5KE47CA can be found in the Littelfuse application note 'Surface Mounting Guidelines for TVS Diodes' (document number: 10101).
The TP1.5KE47CA is a commercial-grade device, but Littelfuse offers a similar device, the SP1.5KE47CA, which is qualified to the aerospace standard AS9100 and is suitable for high-reliability applications.
To select the correct TVS diode, consider the following factors: the maximum voltage and current of the circuit, the type of transient protection required (e.g., lightning, ESD, etc.), and the available board space and layout constraints. Littelfuse provides a TVS Diode Selection Guide (document number: 10102) to help with the selection process.
The maximum operating temperature of the TP1.5KE47CA is 150°C, as specified in the datasheet. However, it's essential to consider the derating of the device's characteristics at higher temperatures to ensure reliable operation.
While it's technically possible to use multiple TP1.5KE47CA devices in parallel, it's not recommended as it can lead to uneven current sharing and reduced overall reliability. Instead, consider using a single device with a higher power rating, such as the TP5.0KE47CA.
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TP1.5KE47CA Overview
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