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-0177 Rev. 1 (101229) Page 6 of 7
NOTES:
1 Dimension are in inches.
2 Millimeters are given for general information only.
3
Index area: A notch or pin one identification mark shall be located adjacent to pin one and shall be located within the shaded
area shown. The manufacturer’s identification shall not be used as a pin one identification mark. Alternatively, a tab (dine TL)
may be used to identify pin one.
4
Dimension LD
2
shall be measured at the point of exit of the lead from the body.
5 This dimension allows for off-center lid, meniscus, and glass overrun.
6
The basic pin spacing is .050 inch (1.27 mm) between centerlines. Each pin centerline shall be located within ±.005 inch (0.13
mm) of its exact longitudinal position relative to pins 1 and 14.
7 All leads: Increase maximum limit by .003 inch (0.08 mm) measured at the center of the flat when the lead finish is solder.
8
Twelve spaces.
9
Applies to all four corners (leads number 2, 6, 9 and 13).
10 Dimension LO may be .000 inch (0.00 mm if leads number 2, 6, 9, and 13) bend toward the cavity of the package within one
lead width from the point of entry of the lead into the body or if the leads are brazed to the metalized ceramic body.
11 No organic or polymeric materials shall be molded to the bottom of the package to cover the leads.
12 Optional, see note 1. If a pin one identification mark is used in addition to this tab, the minimum limit of dimension TL does
not apply.
13 Applies to leads number 1, 7, 8, and 14.
14 Lead configuration is optional within dimension BW except dimensions LW and LT apply.
15 In accordance with ASME Y14.5M, diameters are eqivalent to φx symbology.
16 Pins 1, 7, 8, and 14 are collectors.
17 Pin 2, 6, 9, and 13 are bases.
18 Pin 3, 5, 10, and 12 are emitters.
19 Pins 4 and 11 are no contacts.
FIGURE 2. Physical dimensions for type 2N6990
FIGURE 3. Schematic and terminal connections for types 2N6989 & 2N6990
