Lead-free surface mount polymer PTCs
13 July 2005
Circuit & System Protection
Perimeter Security, Alarms & Intruder Detection
Products & Solutions
Bourns Multifuse Polymer PTC lead (Pb)-free surface mount components' (the MF-SMDF, MF-MSMF, and MFNSMF) standard metal termination finish is electroless nickel immersion gold (ENIG).
Bourns Multifuse surface mount component terminations
This finish gives the components long shelf life and the precious-metal topcoat provides excellent electrical connectivity. The ENIG finished components fully comply with the solderability characteristics defined in the joint industry standard ANSI/J-STD-002 Category 2.
Bourns also offers an alternative electroless 100% tin (Sn) termination finish to the standard ENIG finish. This option is available for applications requiring the soldering characteristics of ANSI/J-STD-002, Category 3.
* Category 2 - typical coating durability for non-tin and non-tin-lead finishes: This category is intended for surfaces finished with other than Sn or Sn/Pb coatings that will be soldered after an extended time from the time of testing. Standard Bourns Multifuse Polymer PTC surface mount products have an ENIG coated terminal consistent with this category. These parts fully comply with the tests and procedures outlined in Category 2.
* Category 3 - typical coating durability default for tin and tin lead finishes: A category intended for surfaces finished with Sn or Sn/Pb coatings, which will be soldered after an extended storage from the time of testing. The Bourns Multifuse Polymer PTC devices with an optional Sn finish fall into this category and all products with the optional Sn finish meet or exceed the requirements of this category.
Further reading:
Safety relay for explosive areas
IOT Electronics
Circuit & System Protection
Phoenix Contact has expanded its safety portfolio with the new PSR-MC35-EXI safety relay module, specifically engineered for use in potentially explosive environments.
Read more...
Clearing the Static: Ensuring effective ESD control
Actum
Circuit & System Protection
To maintain reliable electrostatic discharge control, regular testing and accurate measurement are essential, with grounding products and ESD testing equipment being vital.
Read more...
When your security starts thinking with you
Secutel Technologies
Surveillance Perimeter Security, Alarms & Intruder Detection AI & Data Analytics
If you manage a warehouse or logistics environment, you already understand how quickly risk can escalate during the day and after hours. The question is: how quickly can you respond?
Read more...
SWEAR integrates with Milestone
Milestone Systems
Surveillance Products & Solutions
Security footage, legal evidence, and other critical surveillance assets face increasing risks of tampering, raising chain-of-custody questions, jeopardising admissibility, and undermining the timely operational decisions that depend on credible video.
Read more...
Clearing the Static: The importance of ESD audits
Actum
Circuit & System Protection
An ESD audit is the first step in establishing an effective static control programme in the workplace, and will help identify vulnerable areas and potentially hazardous static zones that require improvement.
Read more...
EMI shielding materials application guide
Circuit & System Protection
TE Connectivity’s shielding solutions include electrically conductive elastomers, gaskets, knitted wire mesh, oriented wire, EMI shielding ventilation panels, shielded window, cable shielding and shielding components.
Read more...
Clearing the Static: ESD containers and packaging
Actum
Circuit & System Protection
Vacuum forming ESD
Electronic components can be damaged by electrostatic discharges. To protect against such damage, electronic assembly parts are often transported or stored in vacuum formed component
...
Read more...
Bringing fire safety closer to home
SafeQuip
Fire & Safety Products & Solutions Smart Home Automation
SafeQuip’s latest product launch introduces two compact, disposable fire extinguishers for everyday use, one suitable for Class A, B, and C fires, the other rated for Class A, B and F fires.
Read more...
Exhibitions across the security spectrum
News & Events Perimeter Security, Alarms & Intruder Detection Smart Home Automation
HomeSec Expo has become the security industry’s premier trade event. Visitors will experience a live showcase of how different aspects of the security spectrum come together under one roof.
Read more...
A clear vision for a safer, smarter future
News & Events Perimeter Security, Alarms & Intruder Detection Smart Home Automation
With its authoritative lineup of sponsors and exhibitors, HomeSec Expo 2026 embodies an authoritative, yet pragmatic vision, for the security industry. It is a vision that recognises both the urgency of current threats and the excitement of technological innovation.
Read more...
printer friendly version