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
T4-LDS-0042 Rev. 3 (100247) Page 4 of 7
PACKAGE DIMENSIONS
NOTES:
Dimensions
1. Dimensions are in inches. Symbol Inches Millimeters Note
2. Millimeters are given for general information only. Min Max Min Max
3. Beyond r (radius) maximum, TL shall be held for a minimum length CD .178 .195 4.52 4.95
of .011 inch (0.28 mm). CH .170 .210 4.32 5.33
4. Dimension TL measured from maximum HD. HD .209 .230 5.31 5.84
5. Body contour optional within zone defined by HD, CD, and Q. LC .100 TP 2.54 TP 6
6. Leads at gauge plane .054 +.001 -.000 inch (1.37 +0.03 -0.00 mm) LD .016 .021 0.41 0.53 7,8
below seating plane shall be within .007 inch (0.18 mm) radius of LL .500 .750 12.70 19.05 7,8,13
true position (TP) at maximum material condition (MMC) relative to LU .016 .019 0.41 0.48 7,8
tab at MMC. L
1
.050 1.27 7,8
7. Dimension LU applies between L
1
and L
2
. Dimension LD applies L
2
.250 6.35 7,8
between L
2
and LL minimum. Diameter is uncontrolled in L
1
and P .100 2.54
beyond LL minimum. Q .030 0.76 5
8. All three leads. TL .028 .048 0.71 1.22 3,4
9. The collector shall be internally connected to the case. TW .036 .046 0.91 1.17 3
10. Dimension r (radius) applies to both inside corners of tab. r .010 0.25 10
11. In accordance with ASME Y14.5M, diameters are equivalent to φx
α
45° TP 45° TP
6
symbology. 1, 2, 9, 11, 12, 13
12. Lead 1 = emitter, lead 2 = base, lead 3 = collector.
13. For L suffix devices, dimension LL = 1.5 inches (38.10 mm) min.
and 1.75 inches (44.45 mm) max.
FIGURE 1. Physical dimensions (similar to TO-18).