TECHNICAL DATA SHEET
6 Lake Street, Lawrence, MA 01841 Gort Road Business Park, Ennis, Co. Clare, Ireland
1-800-446-1158 / (978) 620-2600 / Fax: (978) 689-0803 Tel: +353 (0) 65 6840044 Fax: +353 (0) 65 6822298
Website: http://www.microsemi.com
T4-LDS-0010 Rev. 3 (101342) Page 4 of 4
PACKAGE DIMENSIONS
NOTES:
1. Dimensions are in inches.
2. Millimeters are given for general information only.
3. Hatched areas on package denote metallized areas.
4. Lid material: Kovar.
5. Pad 1 = Base, Pad 2 = Emitter, Pad 3 = Collector, Pad 4 = Shielding connected to the lid.
6. In accordance with ASME Y14.5M, diameters are equivalent to φx symbology.
FIGURE 2. Physical dimensions for 2N918UB, surface mount.
Symbol
Dimensions
Dimensions
Inches
Millimeters
Note Symbol Inches Millimeters Note
Min Max Min Max Min Max Min Max
BH .046 .056 1.17 1.42 LS
1
.036 .040 0.91 1.02
BL .115 .128 2.92 3.25 LS
2
.071 .079 1.80 2.01
BW .085 .108 2.16 2.74 LW .016 .024 0.41 0.61
CL .128 3.25 r .008 .203
CW .108 2.74 r1 .012 .305
LL
1
.022 .038 0.56 0.97 r2 .022 .559
LL
2
.017 .035 0.4. 0.89
