!
MENU
Toggle navigation
Products
Pump & Bottle Sets
Cone Top Bottles
Wash Bottles
Trigger Sprayer Bottles
Flux Dispensers
One-Touch Dispensers
Glass Bottle
HDPE (High Density Plastic) Bottle
Tin-Plate Bottle
Lasting-Touch Dispensers
HDPE (High Density Plastic) Bottles
Glass Bottles
Pure-Take Locking Dispensers
HDPE (High Density Plastic) Bottle
Glass Bottle
Tin-Plate Bottle
Pure-Touch Dispensers
Glass Bottle
HDPE (High Density Plastic) Bottle
Take-Along Locking Dispensers
HDPE (High Density Plastic) Bottle
Glass Bottle
Twist-Lock Locking Dispensers
Black Pump
Purple Pump
White Pump
Pump & Bottle Accessories
Replacement Stems
Bottle Closures
Replacement Needles
Pumps Only
Lasting-Touch Pump
One-Touch Pump
Pure-Touch Pump
Pure-Take Locking Pump
Take-Along Locking Pump
Twist-Lock Locking Pump
Bottles Only
HDPE (High Density Plastic)
Blue durAstatic®
Green durAstatic®
Orange durAstatic®
Pink
Purple
White (No Colors Added)
Yellow durAstatic®
Badge & ID Holders
Color Badge Holders
Clear Vinyl Badge Holders
Shielded Badge Holders
Arm Badge
Badge Reels, Lanyards, & Strap Clips
Cable Management
Cable Control
Connector Covers & Dust Caps
Circular Connectors
D-Sub Connectors
Document Holders
With Zipper
No-Zipper
Drinking Cup
Fume Extractors
Series II System (1-2 Operators)
Complete System
Accessories
Replacement Filters
Hand & Power Tools
Cleaning Brushes
Conductive (Black Bristles)
Dissipative (Yellow Nylon Bristles)
Circuitracer™ Continuity Tester
IC Tube End Plug Extractor
Probes & Spudgers
Nylon
Steel
Wood
Screw Removal Pliers
Sleeve & Tubing Cutter
Small Nut Starter
Tool Storage
Wire & Harness Threader
Lotion
Probes, Spudgers, Soldering Aids
Double Ended Soldering Aids
Orange Sticks
Probes and Spudgers
Soldering Aid Kits
Soldering & Rework
Desoldering Braid
Lead-Free
One-Step
Quick Braid
Sea Braid
Solder Tip Cleaners
Stencil Rolls & Wipes
DEK
EKRA
MPM
YAMAHA
Vacuums
Blow Vac
ESD Service Vacuum
HEPA Vac
Workstation Organizers
Overstock & Clearance Deals
EasyBraid Products
ID & Vinyl Products
MENDA Pump Dispensers
Specialty Tools & Accessories
Workstation Organizers
Vacuums
ESD Products
ESD Liquid Dispenser
ESD durAstatic® Bottles Only
ESD Badge Holders
ESD Brushes
ESD Cable Control
ESD Conductive Connector Covers
ESD Drinking Cup
ESD Flux Bottles
ESD Fume Extractor & Accessories
ESD Lotion
ESD Workstation Organizers
ESD Document Holders
ESD Testers, Probes & Tools
ESD Vacuums & Accessories
ESD Clearance & Overstock
Beau Tech Products
Cleaning Brushes
Double Ended Soldering Aids
Hand Tools
Orange Sticks
Probes and Spudgers
Soldering Aid Kits
EasyBraid Products
Desoldering Braid
Stencil Rolls
Solder Tip Cleaners
WickGun Desoldering Braid Dispenser
Badge & ID Holders
Clear Vinyl Badge Holders
Color Badge Holders
Document Holders
Horizontal Badges
Vertical Badges
Proximity Card Badge Holders
Multi-Card Badge Holders
Shielded Badge Holders
Event Badge Holders
Flap Closure Badge Holders
Zipper Closure Badge Holders
Arm Badges
Badge Reels
Strap Clips
Lanyards
Resources
Videos
REGISTER / LOGIN
SHOP
RPL
CART (
0
)
Questions And Answers
#
459
List All Questions
Search
List by Category
Question
I would like to learn the ideal humudity level for ESD protective area. –Alp Korkmaz, Karkel Elektronic, Sincan, Turkey
Answer
There are several recommendations, depending on which standard or book you read. There is a real cost for the equipment associated to keeping a facility humidified within a specified range as well as to having an overly humidified or very dry work area with respect to corrosion and ESD respectively. It is best to put in place an ESD control program that does not rely on humidification as its primary constituent (as this is sometimes very hard to control) and understand the effects that trying the boundary of the ranges have on your products, equipment and people. From previous Q&As: Q73: What is the specified humidity level for a class 100 clean room to make Hard Disk Assembly? A73: A good range would be between 40% and 55%. You want to minimize corrosion and maximize ESD protection. There is a paper on Humidity for your convenience. Standard Humid air helps to dissipate electrostatic charges by keeping surfaces moist, therefore increasing surface conductivity. Substantial electrostatic voltage levels can accumulate with a decrease in relative humidity, see Table 1 above. However, it is also evident from Table 1 that significant electrostatic voltages can still be generated with relative humidity as high as 90 percent. Relative humidity between 40 percent and 60 percent in ESD protective areas is desirable as long as it does not result in corrosion or in other detrimental effects such as PWB delamination during soldering. Where high relative humidity levels cannot be maintained, ionized air can be used to dissipate electrostatic charges. MIL-STD-1695 specifically addresses relative humidity levels in the range of 30 - 70 percent in areas where electronic parts and hybrid microcircuits (MIL-STD-1695, work areas 5 and 6) are handled or processed. MIL-STD-1695 requires the same level of relative humidity controls for handling and storage areas (MIL-STD-1695, work area 13), except when items are covered or protected.
Related Categories:
Humidity
Environmental Conditions
If you have found this Q/A useful, please rate it based on its helpfulness.
This question has been rated:
(
0
% at
0
Ratings)
This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Review our
Cookies Policy
for more information.
Accept