Full Site - : shelf life (Page 2 of 65)

Mondstar International Trading Co., Ltd

Industry Directory | Distributor

Mondstar is a leading supplier of specialty food additives, serving the diverse needs of the food industry. Mondstar offers a comprehensive range of food additives, from emulsifiers and stabilizers to preservatives and flavor

Keeping Tin Solderable

Technical Library | 1999-05-06 15:31:13.0

Tin plating on a component lead makes its soldering easier. Everybody knows that. Not so well known is that tin plating has shelf life -- its ability to be easily soldered degrades over time. the speed and severity of degradation depends both on storage conditions and on the plating itself...

TE Connectivity

Solder Preforms

Solder Preforms

New Equipment | Solder Materials

70% have a shelf life of 6-months from the DOM.

Indium Corporation

Component Reliability After Long Term Storage

Technical Library | 2024-06-19 15:23:54.0

Each year the semiconductor industry routes a significant volume of devices to recycling sites for no reliability or quality rationale beyond the fact that those devices were stored on a warehouse shelf for two years. This study identifies the key risks attributed to extended storage of devices in uncontrolled indoor environments and the risk mitigation required to permit safe shelf-life extension. Component reliability was evaluated after extended storage to assure component solderability, MSL stability and die surface integrity. Packing materials were evaluated for customer use parameters as well as structural integrity and ESD properties. Results show that current packaging material (mold compound and leadframe) is sufficiently robust to protect the active integrated circuits for many decades and permit standard reflow solder assembly beyond 15 years. Standard packing materials (bags, desiccant, and humidity cards) are robust for a 32 month storage period that can be extended by repacking with fresh materials. Packing materials designed for long term storage are effective for more than five years.

Texas Instruments

SMD Adhesives - Epibond�

New Equipment |  

Epibond� 7275-Series surface mount adhesives offer excellent performance for all print and dispensing applications. Consistent high-dot profile and fast curing. Room temperature stability, 6-month room temperature shelf life. Non slumping and non st

Cookson Electronics

Extreme Long Term Printed Circuit Board Surface Finish Solderability Assessment

Technical Library | 2021-01-28 01:55:00.0

Printed circuit board surface finishes are a topic of constant discussion as environmental influences, such as the Restriction of Hazardous Substances (RoHS) Directive or technology challenges, such as flip chip and 01005 passive components, initiate technology changes. These factors drive the need for greater control of processing characteristics like coplanarity and solderability, which influence the selection of surface finishes and impact costs as well as process robustness and integrity. The ideal printed circuit board finish would have good solderability, long shelf life, ease of fabrication/processing, robust environmental performance and provide dual soldering/wirebonding capabilities; unfortunately no single industry surface finish possesses all of these traits. The selection of a printed circuit board surface finish is ultimately a series of compromises for a given application.

Solderability Testing and Solutions Inc

Effects Of Storage Environments On The Solderability Of Nickel Palladium- Gold Finish With Pb-Based And Pb- Free Solders

Technical Library | 2022-03-02 21:26:51.0

The solderability of a nickel-palladium-gold (Ni-Pd-Au) finish on a Cu substrate was evaluated for the Pb-free solder, 95.5Sn-3.9Ag-0.6 Cu (wt.%, abbreviated Sn-Ag-Cu) and the eutectic 63Sn-37 Pb (Sn-Pb) alloy. The solder temperature was 245ºC. The flux was a rosin-based mildly activated (RMA) solution. The Ni-Pd-Au finish was tested in the as-fabricated condition as well as after exposure to one of the following accelerated storage (shelf life) regiments: (1) 33.6, 67.2, or 336 hours in the Battelle Class 2 flowing gas environment or (2) 5, 16, or 24 hours of steam aging (88ºC, 90%RH).

Sandia National Laboratories

antistatic/esd/cleanroon finger cots

antistatic/esd/cleanroon finger cots

New Equipment |  

Anti-skid cut-off finger cots(powder free) Description: Raw materials: 100% pure natural latex;Without plasticizers,silicone oil and amide. Powder-free;Chlorinated-yellow Transparent, Anti-static treated,Textured tip ,Rimless, Unrolled,Class 10 cl

Shenzhen Maxsharer Import & Export Co, Ltd

Polyester kapton tape

Polyester kapton tape

New Equipment | Materials

100% (Test method GB-T7753-87) Storage Details Store under normal conditions of 10° to 30°C and 40 to70% R.H. in their initial packaging. Shelf life is 6 months from the date of

SHENZHEN KHJ TECHNOLOGY CO.,LTD

Environmental Test Chamber Services

Environmental Test Chamber Services

New Equipment | Test Services

All electronic hardware is susceptible to the damaging effects of moisture, temperature, and contaminants. STI understands the criticality of reliability testing and test-to-failure. Improper selection of assembly materials and manufacturing processe

STI Electronics


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2024 Eptac IPC Certification Training Schedule

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Component Placement 101 Training Course
2024 Eptac IPC Certification Training Schedule

Software programs for SMT placement and AOI Inspection machines from CAD or Gerber.
PCB Depanelizers

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