Low pass filters from API

Low pass filters from API

Low Pass Filters

Available from APC Hi-Rel, API’s low pass EMI filters provides more style, size IL performance and cost alternatives. The filters have a wide range of package size, mounting options and circuit configuration offering maximum design flexibility. The low pass filters has a range of models including Hermetically Sealed Threaded Case FiltersSolder-in FiltersMiniature Solder-in Filters and L Circuit Filters, Large Diameter Solder-in High Temperature Filters and more.

Contact our technical sales team on 0330 124 4540 or email hi-rel@apcplc.com to discuss your requirements.

APC Technology Group plc

Hermetically Sealed Threaded Case Filters

This series of filters features hermetic glass seals and high EMI filtering performance. They are excellent for critical applications that demand high reliability in the toughest environmental conditions and provide broadband high performance EMI filtering from 10 KHz to over 10 GHz.

Features

  • Popular .375″, .410″ and .690″ case diameters
  • Voltage ratings from 50 VDC to 400 VDC/240 VAC, 400 Hz
  • Filter configurations available: C, L, Pi, T and double T
  • MIL-F-15733, DSCC84084, and MIL-F-28861 QPL filters available
  • Impervious to high moisture environments, solvents and severe environmental conditions
  • High temperature terminal construction
  • D-slotted bushings
  • High reliability testing available
Hermetically Sealed Threaded Case Filters Applications
  • Power supplies
  • Signal lines
  • Rocket igniters
  • Aerospace
  • DC motors
  • Telecomm and military / secure communications
  • Medical equipment
  • Mining / oil drilling
  • Transceivers
  • Microwave filters
  • Industrial control systems
  • Multi-circuit filter assemblies
APC Technology Group plc

Solder-in Filters

Solder-in EMI filters are ideal for use in critical areas where space does not allow use of mounting tools or hardware. The solder-in feature also allows installation in unison with other board mounted components.

Features

  • Small size to allow effective use of space
  • Voltage ratings to 750 VDC
  • Multiple circuit configurations: C, L and Pi available
  • High temperature construction to prevent reflow during installation
  • MIL-F-15733 QPL versions available
Solder-in Filters Applications
  • Signal and data lines
  • DC power lines
  • Microwave applications such as attenuators and oscillators
  • Preform well in high imedance circuits where large capacitance values are not practical
APC Technology Group plc

Miniature Solder-in Filters and L Circuit Filters

Miniature Solder-in EMI Filters are ideal for microwave applications that perform well in high impedance circuits where large capacitance values are not practical.

Features

  • Available in C, Pi, and standard L circuit
  • 156 diameter
  • Miniature size to allow effective use of space
  • Standard capacitance values from 5pF to .033µF
  • Voltage ratings to 200 VDC/115 VAC 0–400 Hz
  • Hermetically sealed on one end allows for through-hole sealing between compartments
  • High temperature construction meets MIL-F-28861 solderability and resistance to soldering heat requirements
  • Available in MIL-C-11015 versions
  • Gold plating compatible with gold bonding techniques
Miniature Solder-in Filters and L Circuit Filters Applications
  • Signal and data lines
  • DC power lines
  • Microwave applications such as attenuators and oscillators
  • Perform well in high impedance circuits where large capacitance values are not practical
APC Technology Group plc

Large Diameter Solder-in High Temperature Filters

Large Diameter Solder-in High Temperature Filters can withstand 300°C installation temperatures and are ideal for low to medium impedance circuits where large amounts of capacitance to ground can be tolerated.

Features

  • 400” diameter mounting vs .128” diameter mounting
  • Increased capacitance values – up to 1.2uF
  • EMI filtering from 500KHz up to 10GHz
  • 15 Amp current rating
  • Glass sealed one end provided protection from hostile environments and maintain hermeticity
  • Rugged monolithic discoidal capacitor construction
  • Gold plated suited for gold bonding
  • Designed to be soldered into a package, bracket or bulkhead
  • Reverse seal available
  • Special lead length and end terminations available
  • High temperature construction withstands 300°C installation temperatures
  • Ideal for low to medium impedance circuits where large amounts of capacitance to ground can be tolerated (feed-through “C” circuit)
Large Diameter Solder-in High Temperature Filters Applications
  • Microwave Attenuators
  • Microwave Oscillators
  • High impedance circuits where large capacitance values are not practical
  • Signal and data lines
  • DC power lines
APC Technology Group plc

Mini-Press Filters

The Spec Mini-Press 9925 Series Lowpass Filters are knurled filters designed to be pressed into place and create a reliable mechanical bond. This feature makes it an excellent selection for applications where soldering is undesirable. Spec Mini-Press filters perform well in high impedance circuits where large capacitance values are not practical. Suitable plating is available that allows gold bonding to the terminals.

Installation

  • 136″ to .137″ (3.45-3.48mm) diameter hole
  • Hole must be free of all insulating materials
  • Installation tool must have a hole of sufficient depth and diameter to accept the terminal of the filter
  • Installation force must be applied gradually and smoothly until the flange of the filter is seated against the receiving part (request installation instructions)
Mini-Press Filters Applications
  • Attenuators
  • Synthesizers
  • Oscillators
APC Technology Group plc

Mini Solder-in Feed Thru Filters

Miniature solder-in filters are hermetically sealed on one end for thru-hole sealing between compartments, allowing it to be soldered into a package, bracket, or bulkhead while maintaining hermetically. The high temperature construction meets military requirements for solderability and resistance to soldering heat and its high-purity gold plating provides excellent compatibility with gold bonding techniques.

Features

  • 120″ diameter mounting
  • Capacitance values from 5pF to .027uF
  • RoHS compliant
  • Reverse seal available
  • High temperature construction
  • High temperature construction meets military requirements for solderability and resistance to soldering heat
  • High-purity gold plating provides excellent compatibility with gold bonding techniques
  • Easily swapped out, allowing for flexibility in filter replacement and capacitance and filter substitution
  • Custom designs also available
Mini Solder-in Feed Thru Filters Applications
  • Microwave applications
  • Oscillators
  • Attenuators
  • Synthesizers
APC Technology Group plc

EMI Spanner Filters

This threaded filter is designed without a hex and does not require soldering for installation.

These features make our spanner filter an excellent selection for applications that require many lines to be filtered in close proximity. The easy swap out also allows for flexibility in filter replacement and capacitance substitution. Easy filter substitution also allows for flexibility in filter placement.

Installation

  • 136″ to .137″ (3.45 to 3.48mm) diameter hole
  • Hole must be free of all insulating materials
  • Installation tool must have a hole of sufficient depth and diameter to accept the termination of the filter
  • Installation force must be applied gradually and smoothly until the flange of the filter is seated against the receiving part
EMI Spanner Filters Applications
  • Microwave applications
  • Frequency synthesizers
  • Power amplifiers
  • MMW radio
  • Commercial and high-reliability applications
APC Technology Group plc

Resin Sealed Bolt-in Filters

These filters are easily mounted in a tapped hole or thru-hole with supplied nut and lock-washer. The rugged case with resin seals at both ends provides excellent environmental protection. Primarily used in filtering signal/data lines and DC power lines.

Features

  • Wide range of sizes: 4-40 thread through 5/16-24 thread
  • Voltage ratings to 500 VDC/220 VAC (400 Hz)
  • MIL-F-15733 QPL filters available
  • Multiple circuit configurations: C, L and Pi
  • Metric threaded filters available, consult factory
Resin Sealed Bolt-in Filters Applications
  • Power supplies
  • Signal lines
  • Rocket igniters
  • Aerospace
  • DC motors
  • Telecom and secure communications
  • Military
  • Medical equipment
  • Mining and oil drilling
  • Transceivers
  • Microwave filters
  • Industrial control systems
  • Multi-circuit filter assemblies
APC Technology Group plc

High Current/ High Voltage Resin Sealed Filters

High current filters are ideal for use in high current 5-volt logic buss, but also can be used for ±48 VDC telephone rack buss, high current switch mode power supplies and DC charging systems. High voltage filters find use in high voltage power supplies and applications requiring U.L. Hi-Pot.

Features

  • Current ratings up to 100 Amps
  • Continuous voltage ratings up to 1250 VDC/240 VAC (400Hz)
  • U.L. 1459 recognized and CSA C22.2 approved versions available
  • Rugged bolt-in style for easy installation
  • Available in C and Pi circuits
  • Cost effective solutions
  • Design flexibility
High Current/ High Voltage Resin Sealed Filters Applications
  • Power supplies
  • Signal lines
  • Rocket igniters
  • Aerospace
  • DC motors
  • Telecom and military secure communications
  • Medical equipment
  • Mining and oil drilling
  • Transceivers
  • Microwave filters
  • Industrial control systems
  • Multi-circuit filter assemblies
APC Technology Group plc

Value-Added Low Pass Filter Assemblies

Value-added low pass filters provide flexible solutions to meet your unique design challenges. Our manufacturing process allows you to add connectors, modify terminations or add wire harnesses without adding much cost or drastically increasing lead times.

Value Added Services

  • Allow you to stream-line your bill of materials.
  • Reduce inventory/production costs.
  • Offer custom application-specific low pass filter assemblies.
Benefits of Low Pass Filter Assemblies Applications
  • Incorporate specific terminations, connectors or wire harnesses to accommodate your application
  • Lower the cost of acquisition and assembly
  • Reduce production operations and lead times
  • Built-to-order low pass filters

For technical sales and expert advice on our range of high reliability electronic components contact the Hi-Rel team on: