SCS
Frequently asked questions
Common questions about SCS from 3G Electric.
What is the resistance value in SCS elastic antistatic wrist strap kits?
The SCS elastic antistatic wrist strap kit (MPN 2214) includes a 1‑megohm resistor built into the ground cord. This resistor limits current through the wearer in the event of accidental contact with a live circuit. The kit consists of a burgundy elastic strap and a black coiled cord with a maximum extended length of 5 ft. The product is listed to ANSI/ESD S1.1 and ANSI/ESD S20.20, and the wrist strap is adjustable for different wrist sizes. The coiled cord allows movement while maintaining a continuous ground path.
What length and terminal size are available for SCS grounding cords for static control mats?
SCS grounding cords for static control mats (MPN 770115) are 15 ft long with green/yellow insulation and a #10 ring terminal. The cord is used to connect a static control mat to a known ground point, providing a path for dissipating electrostatic charges. Each cord includes six #32 x 1/4 in flat head screws and countersunk washers for attaching the ring terminal to the mat. The product references ANSI/ESD S6.1, which covers grounding practices for static control surfaces. The 15 ft length accommodates typical workstation layouts where the mat may be some distance from the ground point.
What sizes of SCS Tyvek desiccant bags are available and how much moisture can each absorb?
SCS Tyvek desiccant bags are supplied in several sizes: 7 g (protects 0.03 cu ft, 1,200 per pail), 12 g (protects 0.03 cu ft, 700 per pail), 18 g (protects 0.83 cu ft, 550 per pail), 40 g (protects 0.83 cu ft, pail quantity), and 68 g (protects 0.83 cu ft, 150 per pail). The bags use Tyvek material, which allows moisture vapor to pass while containing the desiccant. They are used in packaging and storage to control humidity inside enclosed spaces, such as shipping containers, electronic enclosures, or storage cabinets. The appropriate size depends on the volume of the enclosed space and the expected moisture load.
How do SCS humidity indicator cards work and what is their format?
SCS humidity indicator cards (MPN 6HIC200) are blotter paper cards infused with cobaltous chloride, with six color‑change dots per card. Each dot changes color at a specific relative humidity level, providing a visual indication of moisture exposure. The cards measure 4 3/4 in long and are supplied 200 per case. They are placed inside sealed enclosures or packaging to monitor humidity conditions during storage or transit. The color change is reversible, so the card can indicate both increasing and decreasing moisture levels. These indicators are commonly used alongside desiccant bags to verify that moisture control measures are working.
What standards apply to SCS static control wrist straps and grounding cords?
SCS elastic antistatic wrist strap kits reference ANSI/ESD S1.1 (wrist straps) and ANSI/ESD S20.20 (ESD control program). SCS grounding cords for static control mats reference ANSI/ESD S6.1 (grounding). These standards define test methods, resistance limits, and installation practices for ESD control products. The wrist strap kit includes a 1‑megohm resistor in the ground cord, which is a common requirement for personnel grounding. The grounding cord for mats uses a #10 ring terminal and includes mounting hardware. Buyers should verify that the specific product meets the requirements of their ESD control plan.
Can SCS desiccant bags and humidity indicators be used together in packaging?
Yes. SCS Tyvek desiccant bags and SCS humidity indicator cards are often used together in moisture‑sensitive packaging. The desiccant bags absorb moisture from the enclosed air, while the humidity indicator card provides a visual check of the relative humidity inside the package. For example, a 68 g desiccant bag protecting 0.83 cu ft can be paired with a 6‑dot humidity indicator card to monitor conditions during shipping or storage. The indicator card changes color at predetermined humidity levels, allowing a quick pass/fail assessment without opening the package. This combination is typical for electronics, optical components, and other moisture‑sensitive goods.
