Radiation Hardened NPN Silicon Switching Transistors

Rev. V1

2N2221A, L, UA, UB &

2N2222A, L, UA, UB

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Outline Drawing (UB Surface Mount):

Symbol

Dimensions

Inches

Millimeters

Min.

Max.

Min.

Max.

BH

0.046

0.056

1.17

1.42

BL

0.115

0.128

2.92

3.25

BW

0.085

0.108

2.16

2.74

CL

—

0.128

3.25

CW

0.108

2.74

LL1

0.022

0.038

0.56

0.96

LL2

0.017

0.035

0.43

0.89

LS1

0.036

0.040

0.91

1.02

LS2

0.071

0.079

1.81

2.01

LW

0.016

0.024

0.41

0.61

r

—

0.008

—

0.203

r1

—

0.012

—

0.305

r2

—

0.022

—

0.559

1. Dimensions are in inches.

2. Millimeters are given for general information only.

3. Hatched areas on package denote metalized areas.

4. Pad 1 = Base, Pad 2 = Emitter, Pad 3 = Collector, Pad 4 = Shielding connected to the lid.

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