Radiation Hardened NPN Silicon Switching Transistors

Rev. V1

2N2221A, L, UA, UB &

2N2222A, L, UA, UB

3

3

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

Visit www.macom.com for additional data sheets and product information.

For further information and support please visit:

https://www.macom.com/support

3

Outline Drawing (TO-18):

Symbol

Dimensions

Notes

Inches

Millimeters

Min.

Max.

Min.

Max.

CD

0.178

0.195

4.52

1.95

—

CH

0.170

0.210

4.32

5.33

—

HD

0.209

0.230

5.31

5.84

—

LC

0.100 Typ.

2.54 Typ

6

LD

0.016

0.021

0.41

0.53

7, 8

LL

0.500

0.750

12.70

19.05

7, 8, 13

LU

0.016

0.019

0.41

0.48

7, 8

L1

—

0.050

—

1.27

7, 8

L2

0.250

—

6.35

—

7, 8

P

0.100

—

2.54

—

—

Q

—

0.030

—

0.76

5

TL

0.028

0.048

0.71

1.22

3, 4

TW

0.036

0.046

0.91

1.17

3

r

—

0.010

—

0.25

10

a

45°Typ.

6

1, 2, 9, 11, 12, 13

1. Dimensions are in inches.

2. Millimeters are given for general information only.

3. Beyond r (radius) maximum, TL shall be held for a minimum length of .011 inch (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 0.007

inch (0.18 mm) 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 three leads.

9. The collector shall be internally connected to the case.

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

11.In accordance with ASME Y14.5M, diameters are equivalent to Фx symbology.

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.