All replacement semiconductors are processed and stocked at the

factory to insure complete interchangeability with the devices in

the original equipment. To insure that proper replacements are

provided, the original devices are coded with a Power Designs Inc.

part number as follows:

Semiconductor

Power Designs Inc.

Suffix Identifying

Manufacturer’ s

Type

Special Parameters

Code

When ordering replacements, please identify the device as

completely as possible, listing the model and serial number if available.

In some cases, the replacement part received may have a different

part number from that given in the Electrical Parts List. This can

be due to several factors:

a. A different prefix indicates that Power Designs Inc. is using

a different vendor source. The operating characteristics of the

devices are identical.

b. A completely different part number indicates:

1.

The original vendor discontinued manufacture of the item

or could no longer manufacture it to the original speci-

fications.

2.

A better device for use in the particular circuit has

been substituted.

3.

Tighter controls for interchangeability have provided

greater assurance of improved reliability with the new

replacement.

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