IPN 220-01398-02
M850-00
T857 PCB Information
C6.3.3
Copyright TEL 31/09/98
T857 Parts List (IPN 220-01398-02)
How To Use This Parts List
The components listed in this parts list are divided into two main types: those with a circuit reference (e.g. C2, D1, R121, etc.) and
those without (miscellaneous and mechanical).
Those with a circuit reference are grouped in alphabetical order and then in numerical order within each group. Each component
entry comprises three or four columns: the circuit reference, variant (if applicable), IPN and description. A number in the variant col-
umn indicates that this is a variant component which is fitted only to the product type listed. Static sensitive devices are indicated by
an (S) at the start of the description column.
The miscellaneous and mechanical section lists the variant and common parts in IPN order. Where possible, a number in the legend
column indicates their position in the mechanical assembly drawing.
The Parts List Amendments box below lists component changes that took place after the parts list and diagrams in this section were
compiled. These changes (e.g. value changes, added/deleted components, etc.) are listed by circuit reference in alphanumeric order
and supersede the information given in the parts list or diagrams. Components without circuit references are listed in IPN order.
Parts List Amendments
#C315 Changed from 12p (IPN 015-22120-01) to 8p2 (IPN 015-21820-01)
#C316 Changed from 33p (IPN 015-22330-01) to 27p (IPN 015-22270-01)
#L313 Changed from 1.5T/3.0 (IPN 052-08130-15) to 1.5T/2.5 (IPN 052-08125-15)
R326 Chip resistor deleted - fitted as a leaded component across the emitter/base
leads of Q304
New Product
Types
The following component changes apply to the T857-16-0500/26-0500/36-0500 Product Types:
&C269 changed to 4p7 (IPN 015-21470-01)
C271 changed to 56p (IPN 015-22560-01) - circuit reference changed to &C271
C289 changed to 68n (IPN 015-25680-08) - circuit reference changed to &C289
R290 changed to 680Ω (IPN 036-13680-00) - circuit reference changed to &R290.
303-11169-03 T800 chassis: replaced by 303-11169-04
312-01052-01 T800 top lid: replaced by 312-01052-02
312-01053-01 T800 bottom lid: replaced by 312-01053-02
T857-2X-XXXX Only:
to improve power output &
flatness across the band
(710389).
New chassis and lid tooling introduced, incorporating
mechanical improvements and better RF shielding
(750027, 750028 & 750029). Note that the new lids
should be used only with the new chassis.
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