a 0.500 (12.70) MIN 0.030 (0.76) MAX 0.100 (2.54) T.P. 3 0.335 (8.51) 0.305 (7.75) 0.370 (9.40) 0.335 (8.51) 0.185 (4.70) 0.155 (4.19) 3-Pin Metal Header Package [TO-5] (H-03B) Dimensions shown in inches and (millimeters) 0.200 (5.08) T.P. 0.019 (0.48) 0.016 (0.41) 0.045 (1.14) 0.029 (0.74) 2 0.034 (0.86) 0.028 (0.71) 1 45° T.P. BASE & SEATING PLANE CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.