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-0010 Rev. 3 (101342)

Page 4 of 4

PACKAGE DIMENSIONS

NOTES:

1. Dimensions are in inches.

2. Millimeters are given for general information only.

3. Hatched areas on package denote metallized areas.

4. Lid material: Kovar.

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

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

φx symbology.

FIGURE 2. Physical dimensions for 2N918UB, surface mount.

Symbol

Dimensions

Dimensions

Inches

Millimeters

Note

Symbol

Inches

Millimeters

Note

Min

Max

Min

Max

Min

Max

Min

Max

BH

.046

.056

1.17

1.42

.036

.040

0.91

1.02

BL

.115

.128

2.92

3.25

.071

.079

1.80

2.01

BW

.085

.108

2.16

2.74

LW

.016

.024

0.41

0.61

CL

.128

3.25

r

.008

.203

CW

.108

2.74

r1

.012

.305

.022

.038

0.56

0.97

r2

.022

.559

.017

.035

0.4.

0.89