參數(shù)資料
型號(hào): TMDS3770110
廠商: Texas Instruments, Inc.
英文描述: TMS370 MICROCONTROLLER FAMILY DATA BOOK
中文描述: TMS370微控制器系列數(shù)據(jù)手冊(cè)
文件頁數(shù): 63/78頁
文件大小: 919K
代理商: TMDS3770110
SPECIFIC HANDLING PROCEDURES FOR STATIC-SENSITIVE ITEMS
3–9
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
specific handling procedures for static-sensitive items (continued)
soldering and lead-forming operations
All soldering machines, conveyors, cleaning machines, and equipment must be grounded electrically to
ensure that they are at the same ground potential as the grounded operators working on their stations. No
machine surfaces exposed to static-sensitive items are to be above ground potential.
All processing equipment must be grounded, including all loading and unloading stations, that is, the
stations before and after each piece of processing equipment.
All nonmetallic, static-generating components in the handling systems must be treated to ensure protection
from static.
All workstations must be identified by posting signs as outlined in ESD Labels and Signs in Work Areas.
Operators are to be properly grounded with a grounding wrist strap during handling, loading, unloading,
inspection, rework, or proximity to static-sensitive items.
Unloading-operators working at a grounded station must place static-sensitive items into approved
static-protective bags or containers.
All manual soldering, repair, and touch-up workstations on the solder line are to be static protected.
Operators are to wear grounding wrist straps when working on static-senstive items. Only grounded-tip
soldering/desoldering irons are allowed when working on static-sensitive items.
It is the responsibility of the area supervisor to ensure that all personnel handling static-sensitive items are
familiar with this procedure and fully aware of the damage or degradation of these units in the event of
noncompliance. A periodic inspection must be made using an electrostatic voltmeter to ensure that the
static-free workstations are in proper working order and to ensure that the operators are wearing grounding
wrist straps properly (snugly and in contact with bare skin).
electrical testing operations
All electrical test stations must be static-protected. Operators must be grounded properly when working on
these items.
Reused antistatic magazines must be monitored for maintenance of antistatic characteristics.
Devices must be in an antistatic/conductive environment except at the moment when actually under test.
Devices must not be inserted into or removed from circuits or tester with the power on or with signals applied
to inputs to prevent transient voltages from causing permanent damage.
All unused input leads must be biased if possible.
Device or module repairs must be performed at static-free workstations with the operator attached to a
grounding wrist strap. Grounded-tip soldering irons must be used when working on static-sensitive items.
Static-sensitive items must be handled through all electrical inspections in static protective containers.
Removal of the items from the protective containers must be done at a static-free workstation as discussed
in Preparation for Working at a Static-Free Workstation. The units must be returned to the containers before
leaving the station.
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