A medical device, comprising: an elongate shaft extending along a shaft longitudinal axis and comprising a shaft proximal portion and a shaft distal portion; an ablation tip (350, 352; 400, 402; 472, 500) connected to the shaft distal portion, wherein the ablation tip (350, 352; 400, 402; 472, 500) is a conductive shell disposed over an end of the shaft distal portion; and a temperature sensor (330-la, 330-2a, 332-la, 332-2a; 330-lb, 330-2b, 332-lb, 332-2b; 330-la', 330-2a', 332-la', 332-2a'; 330-lb', 330-2b', 332-lb', 332-2b'; 362; 410; 422; 426, 432; 452; 484; 516) thermally coupled with the conductive shell, wherein the temperature sensor (330-la, 330-2a, 332-la, 332-2a; 330-lb, 330-2b, 332-lb, 332-2b; 330- la', 330-2a', 332-la', 332-2a'; 330-lb', 330-2b', 332-lb', 332-2b'; 362; 410; 422; 426, 432; 452; 484; 516) is a printed temperature sensor (330-la, 330-2a, 332-la, 332-2a; 330-lb, 330- 2b, 332-lb, 332-2b; 330-la', 330-2a', 332-la', 332-2a'; 330-lb', 330-2b', 332-lb', 332-2b'; 362; 410; 422; 426,432; 452; 484; 516) and is configured to sense a temperature of the conductive shell; wherein the temperature sensor (330-la, 330-2a, 332- la, 332-2a; 330-lb, 330-2b, 332-lb, 332-2b; 330-la', 330-2a', 332-la', 332-2a'; 330-lb', 330-2b', 332-lb', 332-2b'; 362; 410; 422; 426,432; 452; 484; 516) is one of a plurality of temperature sensors (330-la, 330-2a, 332-la, 332-2a; 330-lb, 330-2b, 332-lb, 332-2b; 330- la', 330-2a', 332-la', 332-2a'; 330-lb', 330-2b', 332-lb', 332-2b'; 362; 410; 422; 426, 432; 452; 484; 516) that are thermally coupled with the conductive shell, wherein a pair of leads (334, 336; 414; 424, 426; 438; 454, 456; 486) that extend along the elongate shaft is electrically coupled with each temperature sensor (330-la, 330-2a, 332- la, 332-2a; 330-lb, 330-2b, 332-lb, 332-2b; 330-la', 330-2a', 332-la', 332-2a'; 330-lb', 330- 2b', 332-lb', 332-2b'; 362; 410; 422; 426,432; 452; 484; 516), a proximally extending return lead of each pair of leads (426-1, 426-3) is connected to a common lead, wherein the common lead is connected to a common return contact pad shared between the plurality of temperature sensors (330-la, 330-2a, 332-la, 332-2a; 330-lb, 330-2b, 332-lb, 332-2b; 330-la', 330-2a', 332-la', 332-2a'; 330-lb', 330-2b', 332-lb', 332-2b'; 362; 410;422;426,432;452;484; 516), and a terminal end of a distally extending source lead of each pair of leads (426-2, 426-4) is connected to a respective source contact pad (456-1, 456-2, 456-3, 456-4, 456-5, 456-7, 456-8). an elongate shaft extending along a shaft longitudinal axis and comprising a shaft proximal portion and a shaft distal portion; an ablation tip (350, 352; 400, 402; 472, 500) connected to the shaft distal portion, wherein the ablation tip (350, 352; 400, 402; 472, 500) is a conductive shell disposed over an end of the shaft distal portion; and a temperature sensor (330-la, 330-2a, 332-la, 332-2a; 330-lb, 330-2b, 332-lb, 332-2b; 330-la', 330-2a', 332-la', 332-2a'; 330-lb', 330-2b', 332-lb', 332-2b'; 362; 410; 422; 426, 432; 452; 484; 516) thermally coupled with the conductive shell, wherein the temperature sensor (330-la, 330-2a, 332-la, 332-2a; 330-lb, 330-2b, 332-lb, 332-2b; 330- la', 330-2a', 332-la', 332-2a'; 330-lb', 330-2b', 332-lb', 332-2b'; 362; 410; 422; 426, 432; 452; 484; 516) is a printed temperature sensor (330-la, 330-2a, 332-la, 332-2a; 330-lb, 330- 2b, 332-lb, 332-2b; 330-la', 330-2a', 332-la', 332-2a'; 330-lb', 330-2b', 332-lb', 332-2b'; 362; 410; 422; 426,432; 452; 484; 516) and is configured to sense a temperature of the conductive shell; wherein the temperature sensor (330-la, 330-2a, 332- la, 332-2a; 330-lb, 330-2b, 332-lb, 332-2b; 330-la', 330-2a', 332-la', 332-2a'; 330-lb', 330-2b', 332-lb', 332-2b'; 362; 410; 422; 426,432; 452; 484; 516) is one of a plurality of temperature sensors (330-la, 330-2a, 332-la, 332-2a; 330-lb, 330-2b, 332-lb, 332-2b; 330- la', 330-2a', 332-la', 332-2a'; 330-lb', 330-2b', 332-lb', 332-2b'; 362; 410; 422; 426, 432; 452; 484; 516) that are thermally coupled with the conductive shell, wherein a pair of leads (334, 336; 414; 424, 426; 438; 454, 456; 486) that extend along the elongate shaft is electrically coupled with each temperature sensor (330-la, 330-2a, 332- la, 332-2a; 330-lb, 330-2b, 332-lb, 332-2b; 330-la', 330-2a', 332-la', 332-2a'; 330-lb', 330- 2b', 332-lb', 332-2b'; 362; 410; 422; 426,432; 452; 484; 516), a proximally extending return lead of each pair of leads (426-1, 426-3) is connected to a common lead, wherein the common lead is connected to a common return contact pad shared between the plurality of temperature sensors (330-la, 330-2a, 332-la, 332-2a; 330-lb, 330-2b, 332-lb, 332-2b; 330-la', 330-2a', 332-la', 332-2a'; 330-lb', 330-2b', 332-lb', 332-2b'; 362; 410;422;426,432;452;484; 516), and a terminal end of a distally extending source lead of each pair of leads (426-2, 426-4) is connected to a respective source contact pad (456-1, 456-2, 456-3, 456-4, 456-5, 456-7, 456-8).