TECHNICAL DATA SHEET
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 620-2600 / Fax: (978) 689-0803
Website: http://www.microsemi.com
Gort Road Business Park, Ennis, Co. Clare, Ireland
Tel: +353 (0) 65 6840044 Fax: +353 (0) 65 6822298
PACKAGE DIMENSIONS
Dimensions
Symbol
CD
CH
HD
LC
LD
LL
LU
L1
L2
P
Q
TL
TW
r
α
.028
.036
.250
.100
.040
.048
.046
.007
45° TP
.71
.91
Inches
Min
Max
.178
.195
.170
.209
.016
.500
.016
.210
.230
.021
.750
.019
.050
6.35
2.54
1.02
1.22
1.17
.18
5
Millimeters
Min
Max
4.52
4.95
4.32
5.31
.406
12.70
.406
5.33
5.84
.533
19.05
.483
1 .27
5
7,8
7,8
7,8
Note
5
.100 TP
2.54 TP
NOTES:
1. Dimension are in inches.
2.
Millimeters are given for general information only.
3.
Beyond r (radius) maximum, TH shall be held for a minimum length of .011 inch (0.28 mm).
4.
Dimension TL measured from maximum HD.
Body contour optional within zone defined by HD, CD, and Q.
5.
6.
Leads at gauge plane .054 +.001 -.000 inch (1.37 +0.025 -0.00 mm) below seating plane shall be within .007 inch
(0.18mm) radius of true position (TP) at maximum material condition (MMC) relative to tab at MMC.
Dimension LU applies between L1 and L2. Dimension LD applies between L2 and LL minimum. Diameter is
7.
uncontrolled in L1 and beyond LL minimum.
8.
All four leads.
Dimension r (radius) applies to both inside corners of tab.
9.
10.
In accordance with ASME Y14.5M, diameters are equivalent to
φx
symbology.
11.
Lead 1 = emitter, lead 2 = base, lead 3 = collector, lead 4 = case (electrically connected).
FIGURE 1.
Physical dimensions for 2N918 (TO-72).
T4-LDS-0010 Rev. 3 (101342)
Page 3 of 4
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