June, 2017
www.us-tech.com
Page 75 KOA Speer Intros Low-Ohm Anti-Sulfur Resistor
Bradford, PA — KOA Speer Electronics has introduced its SR73-RT, a low-resistance anti-sulfuration chip resistor. SR73-RT cur- rent sense resistors offer excellent anti-sulfu- ration characteristics due to the use of a spe- cial high sulfuration proof inner top electrode material and are designed for use in harsh environments with a high level of sulfur con- tamination. SR73-RT current sense resistors deliver
in standard resistors) reacts with sulfur found in the environment and loses conductivity. The resistor’s electrode can lose all conduc-
low resistance values of 0.43 to 10W and are available in a range of sizes from 0603 up to 1210 in ±1, ±2 and ±5 percent tolerances. Power ratings are offered up to 0.66W in an operating temperature range of –55 to +155°C (–67 to +311°F). Sulfuration of a chip resistor occurs when the silver-based inner electrode (used
Diversified Technologies: High-Voltage Pulse
Modulator
Bedford, MA — Diversified Tech - nologies has introduced a compact, high-voltage pulse modulator for applications that include generating vacuum and atmospheric plasmas, semiconductor production, surface sterilization, R&D, and materials modification.
tivity and disconnect the circuit as sulfuration continues. KOA Speer’s RT series uses a sulfur- resistant material to strengthen the electrode and adds a protective layer to serve as an anti-sulfur barrier. The SR73-RT series passes ASTM-N809 anti-sulfur testing. SR73-RT current sense resistors are suitable
for use in applications including mining, agricul- ture and oil-rich environments. It is also a good choice for automotive electronics and factory automation. The SR73-RT is AEC-Q200-qualified,
with a lead time of 10 weeks. Contact: KOA Speer Electronics, Inc., 199
Low-resistance current sense chip resistors.
Bolivar Drive, Bradford, PA 16701 % 814-362- 5536 fax: 814-362-8883 Web:
www.koaspeer.com
PowerMod pulse modulator. PowerMod™ high-voltage pulse
modulators are solid-state, provide high repeatability, low droop, can be configured for a wide range of cur- rent and voltage requirements, and deliver up to 99 percent efficiency. With fully-adjustable pulse
widths from 1 to 100 microseconds and up to 30 kHz nominal pulse fre- quency, depending on the power level, they yield rise times as low as 15 nanoseconds. The pulse modulators offer full
internal protection against over-volt- age and over-current. PowerMod’s voltage and other settings are easily changed to provide up to 30 kV of peak pulse and currents from 10 to 200A. They are air-insulated and water-cooled, operate on 110 VAC and are mountable on standard racks.
Contact: Diversified Technologies, Inc., 35 Wiggins
Avenue, Bedford, MA 01730 % 781-275-9444 fax: 781-275-6081 E-mail:
kempkes@divtecs.com Web:
www.divtecs.com
Replaces 3 or more wet tantalum capacitors in parallel or series
Replaces 3 or more wet tantalum capacitors in parallel or series
Superior capacitance retention at -55ºC
Superior capacitance retention at -55ºC
Less weight and requires less space
Less weight and requires less space
Rugged stainless steel case withstands up to 80g’s
Rugged stainless steel case withstands up to 80g’s
Glass-to-metal seal prevents dry-out for exceptionally long life
Your Mission-critical applications require SlimPack performance
MLSH Slimpack is designed to meet the most demanding military and aerospace applications. It’s the world’s only hermetic aluminum electrolytic capacitor with a glass-to-metal seal. Slimpack delivers extremely high capacitance at ultra-low temperatures. Energize your next idea with MLSH Slimpack.
MLSH Slimpack is designed to meet the most demanding military and aerospace applications. It’s the world’s only hermetic aluminum electrolytic capacitor with a glass-to-metal seal. Slimpack delivers extremely high capacitance at ultra-low temperatures. Energize your next idea with MLSH Slimpack.
Your Mission-critical applications require SlimPack performance
cde.com/MLSHSlimpack cde.com/MLSHSlimpack
Glass-to-metal seal prevents dry-out for exceptionally long life
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