SM76H Series 2.5 V

CMOS Clock Oscillators

March 2008

www.pletronics.com

425-776-1880

7

Mechanical (obsolete version):

The cover is no longer being supplied over this part. This part is made with a hermetically sealed SM77H

series oscillator. This part is now exposed.

The cover has been deleted, the cover was causing problems with the newer high temperature RoHS lead

free processes. The cover purpose was only cosmetic.

All parts ordered in 2008 will be made in the new fashion.

There is no change in electrical properties.

Pletronics does recommend that all designs should transition to the SM77H ceramic part. This is the base

part of the SM76H.

Inches

mm

Cover:

Centered on the base

304 Stainless Steel

0.010 inch (0.25μm)

Electroless Nickel Plated

1 μinch (25 μm) typical

Label:

White Kapton with Black Letters

–or--

Laser marked lettering

FR4 PCB Base:

Solder masked

All via holes tented on bottom

Copper Clad ½ oz. Typical

Gold plated 0.02 μinch (0.5 μm)

Pin 3 Ground plane is typical

Not to scale

A

0.351 +_0.003

8.91 +_0.07

B

0.356 +_0.005

9.04 +_0.13

C

0.103 +_0.005

2.62 +_0.13

0.324

8.23

0.316

8.03

0.050

1.27

0.040

1.02

0.059

1.50

0.020

0.51

0.040

1.02

0.200

5.08

0.026 typical

0.66

•

The package is not hermetically sealed.

•

The sides are intentionally left open to permit cleaning material to freely flow in the package, thus

minimizing the accumulation of contaminants during cleaning processes.

•

The internal part of the package must be thoroughly dry before operating.