Output power ranges from 100 microwatts to over 10 milliwatts, sufficient to offset most batteries. Micropelt’s standardized TGP package comes in two flavours, TGP-651 and TGP-751, both types being fully interchangeable. Output power and cost can thus be matched to target applications and markets without any changes to the PCB design. At lower gradients, between 10 and 40 °C, both devices produce very similar power levels, so the TGP-651 with a 6mm2 TEG is more cost-effective. Though, for very low gradient operation or high power demand a TGP-751, with a footprint of 12mm2 is preferable. The TGP’s circular aluminium heat source interface feeds through a 10mm hole of the hosting PCB. The rectangular cold face carries the electrical contacts for reflow soldering and connects to the heat sink on its outer side. The device’s vertical dimensions ensure sufficient clearance for electronic components mounted next to it, underneath the heat sink.
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