TMP93CS41DF datasheet(29/48 Pages) TOSHIBA

29 / 48 page

Quality and Reliability Assurance / Handling Precautions

030901

QUA-29

2002-02-20

(5)

Pay attention to the following points when using automatic

equipment in your workplace:

(a)

When picking up ICs with a vacuum unit, use a conductive

rubber fitting on the end of the pick-up wand to protect against

electrostatic charge.

(b)

Minimize friction on IC package surfaces. If some rubbing is

unavoidable due to the device’s mechanical structure,

minimize the friction plane or use material with a small

friction coefficient and low electrical resistance. Also consider

the use of an ionizer.

(c)

In sections that come into contact with device lead terminals,

use a material which dissipates static electricity.

(d)

Ensure that no statically charged bodies (such as work clothes

or the human body) touch the devices.

(e)

Make sure that sections of the tape carrier which come into

contact with installation devices or other electrical machinery

are made of a low-resistance material.

(f)

Make sure that jigs and tools used in the assembly process do

not touch devices.

(g)

In processes in which packages may retain an electrostatic

charge, use an ionizer to neutralize the ions.

(6)

Make sure that CRT displays in the working area are protected

against static charge, for example by a VDT filter. As much as

possible, avoid turning displays on and off. Doing so can cause

electrostatic induction in devices.

(7)

Keep track of charged potential in the working area by taking

periodic measurements.

(8)

Ensure that work chairs are protected by an anti-static textile cover

and are grounded to the floor surface by a grounding chain.

(Suggested resistance between the seat surface and grounding

chain is 7.5

× 105 to 1012 Ω.)

(9)

Install anti-static mats on storage shelf surfaces. (Suggested

surface resistivity is 10

4 to 108

Ω/sq; suggested resistance between

surface and ground is 7.5

× 105 to 108 Ω.)

(10) For transport and temporary storage of devices, use containers

(boxes, jigs or bags) that are made of anti-static materials or

materials which dissipate electrostatic charge.

(11) Make sure that cart surfaces which come into contact with device

packaging are made of materials which will conduct static

electricity, and verify that they are grounded to the floor surface via

a grounding chain.

(12) In any location where the level of static electricity is to be closely

controlled, the ground resistance level should be Class 3 or above.

Use different ground wires for all items of equipment which may

come into physical contact with devices.

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