A-Series Thin Film Surface Mount Chip Attenuator Datasheet

Category: Electronics, International Manufacturing Services Inc, RF Microwave Devices

Overview of A-Series Thin Film SMT Chip Attenuator

The A-Series Thin Film Surface Mount Chip Attenuator datasheet outlines features, specifications, and ordering information for International Manufacturing Services, Inc.’s range of attenuators designed for high-frequency performance. Utilized in a variety of electronic circuits, the A-Series attenuators are crafted on a 99.5% Alumina (AI2O3) substrate, ensuring excellent durability and performance over time.

Key Features

Significant features include a nickel barrier layer for enhanced solderability and mechanical strength, ultra-low noise, and high-frequency viability. These attenuators exhibit low inductance, minimal parasitic capacitance, and maintain stable characteristics across temperature changes and over time. A polyimide layer passivates the attenuator element, ensuring reliability. They are also RoHS compliant, indicating a commitment to environmental standards by avoiding the use of certain hazardous substances.

Specifications

The datasheet lists part numbers alongside their respective dimensions for length, width, and height, as well as rated power (at 70°C), ranging from 32 mW for the smallest A-0402WA model to 250 mW for the A-1612 model. All models maintain a standard impedance of 50 Ohms. Performance criteria include an operating temperature range from -55°C to +125°C and a maximum VSWR (Voltage Standing Wave Ratio) of 1.3:1, except for the A-0402WA which is 1.5:1.

Attenuation and Tolerance

Attenuation values are available from 0 dB to 20 dB, depending on the part number, with specific tolerances detailed for various dB levels. For instance, the A-0402WA & IMS2652 have a tolerance of ±0.3 dB for 0-3 dB attenuation and up to ±1.0 dB for 8-10 dB attenuation. This precise level of control renders them suitable for applications needing exact signal modulation.

Ordering Information

Ordering codes for these surface-mount attenuators indicate the orientation (face up or face down), attenuation level, and power rating alongside the form factor, directed by the product code (e.g., “0805” for an SMT 0805 attenuator). Additional codes such as IMS1141 and IMS2652-C specify face-down orientation for particular form factors.

Performance and Applications

Specialization in frequency performance is highlighted with assurances of operation within specifications up to 20 GHz when mounted face down. The A-Series attenuators are therefore suitable for advanced electronic applications where signal attenuation with high precision and stability across a broad range of frequencies is essential.

Contact details and an invitation for queries demonstrate the manufacturer’s commitment to customer service and support. The datasheet concludes by noting that specifications are subject to change, recommending users to stay updated with the latest information.