Portsmouth, R.I. International Manufacturing Services Inc. (IMS) has expanded its product portfolio to include a wide range of resistors and attenuators for microwave, RF, sensor and instrumentation applications.
The new IMA303 "T"-pad thick-film attenuator for RF and microwave applications operates up to 4 GHz. It is available from 1 dB to 20 dB in 1 dB increments. Power handling on input is 2 watts (W), using proper thermal management techniques, said the company. The attenuator is comprised of an alumina substrate with dimensions of 0.145 in. (L) x 0.122 in. (W) x 0.020 in. thick. Key specs include an impedance of 50 ohms on the input and output with a VSWR of 1.25:1 in the frequency range of dc to 4 GHz.
The IMA 303"T"-pad attenuator is priced at $2.88 each in quantities of 2,500.
A new line of low VSWR termination resistors from IMS minimizes reflection in applications such as isolator circuits in RF and microwave amplifiers and antenna systems. Minimum reflection is achieved by presenting a low VSWR to a matched system while maintaining 50 ohms of resistance. The company said the geometry of the resistor chips is designed to optimize high-frequency performance between 5 to 6 GHz and high power capacity. Power handling for the devices is 150 watts. The surface-mount chips measure .375 in. x .250 in. x .040 in.
Available in either long or short lead configurations, the low VSWR termination resistors are priced at $1.95 each in quantities of 10,000.
IMS said its new "S" family of SMT (surface mount) resistors effectively double the industry standard for power handling without sacrificing device performance. As a result, the new resistors offer designers the ability to operate circuits at higher power levels without having to redesign the circuit or increase component size, particularly for applications such as power supplies, miniature medical devices, instrumentation, communications equipment, and sub-systems. Resistors include the RCX-0402S (160 mW), RCX-0603S (200 mW), RCX-0805S (350 mW), and RCX-1206S (500 mW), RCX-2010S (1W) and the RCX-2512S (2W). Case sizes include 0402, 0603, 0805, 1206, 2010, and 2512, respectively. Resistor values range from 10 Ω to 1 MΩ.
Pricing for the RCX-2512S resistors is $.82 in quantities of 2,500 to 4,900.
Designed for a variety of applications including instrumentation and calibration; RF and microwave circuits, as well as high voltage regulation, power switching, and power supplies, a new line of thick-film chip resistors are available with a wide resistance value range of .1 Ω to 1000 GΩ. Available in package sizes from .030 in. x .020 in. to .250 in. x .120 in., resistor terminations include gold, platinum silver, and platinum silver with a 62/36/2 solder coating. Termination attachment methods include wire bonding, soldering, and epoxy bonding. Bulk packaging is standard with tape and reel available.
The HCC0805 (1000 GΩ) is priced at $2.05 each in quantities of 5,000.
IMS also offers a full line of lead-free compatible thick-film chip resistors. These products include the RCI-2512S, RCI-2512T, RCI-2010S, RCI-1206T, RCI-0805S and RCI-0805T and RCI-0201.
Call (401) 683-9700