Home | | | | Surface Mount EMI Filters

Surface Mount EMI Filters

Three Terminal Chips offer a superior ability to withstand transient voltages and surges and deliver excellent filtering performance in high current applications while providing exceptional solderability and resistance to solder heat.

Square Surface Mount Filters feature high-temperature construction and have current ratings up to 10 amps. This filter chip series is non-polar and surface mountable.  They have excellent performance characteristics and come in a Pi circuit configuration.

The SA Series of EMI filter arrays incorporate (4) three-terminal chips in one compact footprint. These surface-mount filter arrays are structured to minimize the residual inductance and ensure large insertion loss in the wideband.

  • Excellent performance in high current applications
  • Non-polar, surface-mountable
  • Superior filtering characteristics
  • Superb ability to withstand transient voltages and surge
  • Offers exceptional solderability and resistance to solder heat
  • Available in 0603, 0805, 1205, and 1806 body size
  • 2 amp current rating available
  • Available lead-free/RoHS compliant
Capacitance Range COG (NPO) 22 pF to 470 pF
X7R 470 pF to 47,000 pF
Y5V 100,000 pF to 220,000 pF
Capacitance Tolerance COG (NPO) +50/-20%
X7R +50/-20%
Y5V +80/-20%
Temperature Coefficient COG (NPO) 0 ±/30 ppm/°C, -55 to +125°C
X7R +/-15%, -55 to +125°C
Y5V -25 to +85°C
Insulation Resistance Up to 22,000 pF 10,000 Megohms
47,000 pF 5,000 Megohms
DC Resistance 0.4 Amp or less 0.3 ohm max.
1 Amp 0.08 ohm max.
2 Amp 0.04 ohm max.
Rated Voltage Up to 100 VDC
Rated Current Up to 2 amps
  • Square mechanical geometry enhances SMT soldering
  • Rated at 10 amps
  • Packaged in tape and reel or bulk form
  • Operating temperature ranges of -55°C to +125°C
  • Available lead-free/RoHS compliant
Rated Voltage 100 VDC
Test Voltage 250 VDC
Current Rating 10 amps max.
Insulation Resistance Min. 104 MO
Terminations Silver plated
Soldering Conditions Max. 250°C - 5 sec.
Marking None
Packaging Bulk or tape and reel
  • Structure minimizes residual inductance with a high self-resonant frequency, ensuring large insertion loss in a wide band
  • Common ground electrode built into the chip ensures complete grounding of all lines at the ground on both ends
  • Designed to control cross-talk
  • An optimum constant can be selected from the capacity range of 22-22,000 pF to best suit the frequency
  • Solder plated nickel barrier terminations offer good solderability and resistance to soldering heat
  • Available lead-free/RoHS compliant
  • Non-polar and surface-mountable
Rated Voltage 25 VDC to 50 VDC
Rated Current 0.3 amps
IR 10,000 MO min.
DC Resistance 0.3 Ohm max.
Temperature Range -55°C to +125°C
Capacitance Range 22 pF to 22,000 pF
Capacitance Tolerance ±20%

Storage Precautions

Deterioration of solderability can be caused by oxidization/sulfurization due to the high temperature, high humidity, or chlorine/sulfur gas. Parts should be used within 6 months, if possible and stored below 40°C and below 70% RH in an atmosphere free of sulfur, chlorine, or toxic gasses.

These EMI filters are made of ceramic material. Please avoid dropping or other mechanical shocks that could damage the parts.

The products kept in your storage for over 6 months should be used only after checking solderability.

Precautions for safety use

These products are designed and manufactured for use in ordinary electronic products. Performance deterioration or failure is possible, depending on the application they are being used. The capacitor itself will generate heat due to excessive current.  Therefore, the circuit board could be damaged by fire. Please talk to APITech if your intent is to use these products in applications or products that require high quality and reliability, or where product defects or its misconduct might directly or indirectly threaten human life, hurt the human body, damage properties, or may cause a social problem.  Please consult the sales offices and product team well in advance.  Applications include:

  • Aerospace equipment
  • Submarine equipment (submarine repeater, work equipment which used in the sea, etc.)
  • An atomic power control system
  • Vehicle instrument, including its accessories
  • Fuel control equipment
  • Other transportation equipment (vehicles, airplanes, trains, vessels, and traffic rights, etc.)
  • Safety equipment
  • Medical equipment (life-support equipment etc.)
  • Power generation control equipment
  • Disaster prevention and security equipment
  • Military and the Defense Agency applications
  • Information processing equipment (communications infrastructure, etc.)
  • Other equipment requiring the same quality and reliability as above equipment

When using these products in circuit designs, end-users need to contact APITech immediately if the products are having any problems. The safety of these products must be kept in the sufficient, fail-safe design by securing the circuit protection.  These precautions must be taken into consideration in order to maintain the safety of the complete system.