The Model 8447 six-channel A/B switch from Electro Standards Laboratories has two channels with RJ45 Cat5e connectors and four channels with MIL-STD-1553B concentric twinaxial connectors.

The Model 8447 six-channel A/B switch from Electro Standards Laboratories has two channels with RJ45 Cat5e connectors and four channels with MIL-STD-1553B concentric twinaxial connectors. This robust data switch allows the user to share one device among two others for each of its six channels. The switch ports of the device are transparent to all data. All channels are switched simultaneously using the manual push button located on the front panel. When power is lost, the unit reverts to the A position for all channels; upon power restoration, it automatically switches to the last known position.

Linda Trego

Semelab’s ceramic diode leadless chip carrier packages provide drop-in replacement for metal electrode leadless face-type devices.

Semelab’s ceramic diode leadless chip carrier packages provide drop-in replacement for metal electrode leadless face-type devices. The components are suited for military, aerospace, avionics, and high-temperature applications. The DLCC diodes provide enhanced thermal performance and better solderability in a fully hermetic surface-mount ceramic package. Advanced packaging design features include thermal vias that improve heat transfer to the solder pads, reducing the diode’s junction temperature and increasing its operating lifetime. Castellated terminations ensure that the solder meniscus between the PCB and the device is visible for inspection.

Linda Trego

TSM-DS from Taconic is a dimensionally stable, low-loss laminate that offers a low dielectric function of 0.001 at 10 GHz while providing better dimensional stability than epoxy.

TSM-DS from Taconic is a dimensionally stable, low-loss laminate that offers a low dielectric function of 0.001 at 10 GHz while providing better dimensional stability than epoxy. The ceramic-filled reinforced material features a low fiberglass content of approximately 5% that ensures consistency and predictability in fabricating large-format, high-layer-count printed wiring boards. For microwave applications, the low x, y, and z coefficient of thermal expansion values ensure that critical spacing between traces in filters and couplers has very low movement with temperature. The material can be used with low-profile copper foils, yielding a clear copper edge between coupled lines.

Linda Trego

Electromagnetic interference/RF shields from Photofabrication Engineering feature snap-on, snap-off covers that allow easy access to components within the shields.

Electromagnetic interference/RF shields from Photofabrication Engineering feature snap-on, snap-off covers that allow easy access to components within the shields. The shields protect components from EMI/RF interference and environmental hazards while providing electrical grounding. Standard forming tools in any size and shape are used to create covers that attach onto a fence yet can be removed and replaced easily. The photochemically etched fences have grooves extending approximately 50% into the material thickness to enable the custom spring finger designs to snap into them firmly. Circuit-board shielding applications include one-piece or two-piece construction; standard base materials of brass, tin, tin-lead, nickel, copper, and cold-rolled steel; and nickel-silver base material.

Linda Trego

Narda’s Model 4246B-10 miniature stripline coaxial microwave coupler delivers 10 dB of coupling from 6 to 18 GHz, has a flat frequency response, and meets military requirements.

Narda’s Model 4246B-10 miniature stripline coaxial microwave coupler delivers 10 dB of coupling from 6 to 18 GHz, has a flat frequency response, and meets military requirements. The device handles 50 W of average power and 3 kW of peak power and has directivity of at least 15 dB. Other features include insertion loss of 2.5 dB or less, VSWR of 1.4:1, frequency sensitivity of at least ±0.5 dB, and maximum deviation from nominal of ±11 dB. The module measures 1.4 x 0.66 x 0.42 in, weighs 0.9 oz, and has female SMA connectors.

Linda Trego