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-0150 Rev. 2 (101161)

Page 3 of 5

PACKAGE DIMENSIONS

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 (0.28 mm).

4

Dimension TL measured from maximum HD.

5

Body contour optional within zone defined by HD, CD, and Q.

6

Leads at gauge plane .054 +.001 -.000 inch (1.37 +0.03 -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.

7

Dimension LU applies between L1 and L2. Dimension LD applies between L2 and LL minimum. Diameter is uncontrolled in

L1 and beyond LL minimum.

8

All four leads.

9

Dimension r (radius) applies to both inside corners of tab.

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 2N4261 (TO-72).

Dimensions

Symbol

Inches

Millimeters

Notes

Min

Max

Min

Max

CD

.178

.195

4.52

4.95

5

CH

.170

.210

4.32

5.33

HD

.209

.230

5.31

5.84

5

LC

.100 TP

2.54 TP

7, 8

LD

.016

.021

.406

.533

7, 8

LL

.500

.750

12.70 19.05

7, 8

LU

.016

.019

.41

.48

L1

.050

1.27

L2

.250

6.35

P

.100

2.54

Q

.040

1.02

5

TL

.028

.048

.71

1.22

TW

.036

.046

.91

1.17

r

.007

.18

α

45° TP