2n6659.pdf datasheet:

2N6659MECHANICAL DATADimensions in mm (inches)NCHANNEL8.89 (0.35)ENHANCEMENT MODE9.40 (0.37)7.75 (0.305)8.51 (0.335)MOS TRANSISTOR4.19 (0.165)4.95 (0.195)0.89max.FEATURES(0.035)12.70(0.500)7.75 (0.305)min.8.51 (0.335) Switching Regulatorsdia. Converters5.08 (0.200)typ. Motor Drivers2.542(0.100)1 30.66 (0.026)1.14 (0.045)0.71 (0.028)0.86 (0.034)45TO39 METAL PACKAGEUnderside ViewPIN 1 Source PIN 3 DrainPIN 2 Gate CASE DrainABSOLUTE MAXIMUM RATINGS (TCASE = 25C unless otherwise stated)VDS Drain Source Voltage 35VVGS Gate Source Voltage 20VID Drain Current @ TCASE = 25C 1.4AID Drain Current @ TCASE = 100C 1AIDM Pulsed Drain Current * 3APD Power Dissipation @ TCASE = 25C 6.25WPD Power Dissipation @ TCASE = 100C 2.5WTj Operating Junction Temper