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Filtered D-Sub Connector

APITech offers the industry’s most complete line of filtered D-sub connectors. These connectors are available in shell sizes from 9 to 50, and come in many termination types, such as PC mount, wire wrap, solder cup and 90° PCB. In addition, we offer a wide range of filtering options, allowing you to find the right balance between performance and economy.

EMI filter options include our Pi filter configuration, which provides 45-60 dB per decade slope to insertion loss curve, our capacitive-only C filters that provide cost-effective EMI attenuation, ferrite filtered series F connectors (designed for filtering in situations that do not tolerate capacitive loading of circuit).

Applications: commercial aerospace, weapons, military aircraft, medical electronics, industrial process equipment, peripheral and terminal equipment, cellular base stations, graphics workstations

  • EMI filtered D-sub connector available in 9, 15, 25, 37, and 50 shell sizes
  • Variety of terminal configurations including right angle and straight PCB for both pin and socket contact and as an adapter
  • Capacitive and Pi type EMI filters in a full range of capacitance values
  • RoHS compliant with exemption 7. Fully compliant versions are available.
  • Data Sheet - High Performance Filtered D-Sub Connectors
Current Rating 5 amps
RF Current Rating 0.3 amps
Contact Resistance 10 Milliohms max.
UL Recognition Under the category of communication circuit accessories, file #E149046
Shell Zinc diecast, nickel-plated 150 µin (3.81 µm) min.
Insulators Glass-filled polyester, flammability UL94 V-0
Pin Contacts Copper alloy CA725, 15 µin (0.38 µm) gold plated* over nickel
Socket Contacts Copper alloy CA725, 30 µin (0.76 µm) gold plated* over nickel
Terminations Gold flash for PCB mount and solder cups. Solder dipped also available.
Ground Plane Brass, solder plated
Operating Temperature -55°C to +125°C
Capacitors Proprietary barium titanate ceramic formulations
*Heavier gold plating available upon request
EMI Filter Designation EMI Filter Circuits Capacitance 3 dB Cut-off
Freq. Max.
(MHz)
DWV Working
Voltage DC
-55°C to
+125°C
Minimum Insertion Loss - Decibels (dB)
Value 
pF
Total 5
MHz
10
MHz
20
MHz
50
MHz
100
MHz
200
MHz
500
MHz
1
GHz
J Pi 100 +100/-0% 32 300V 100V -- -- -- 2 5 8 16 33
A Pi 310 ±25% 15.9 300V 100V -- -- 2 6 10 17 33 50
C Pi 1000 +150/-0% 3.2 300V 100V -- 3 8 17 27 39 58 70
K Pi 2500 +100/-0% 1.3 150V 50V 6 10 15 30 42 55 70 70
E Pi 4000 +100/-0% 0.8 150V 50V 8 13 20 37 50 64 70 70
N C 375 ±25% 13.7 600V 200V -- -- 2 7 12 18 26 32
L C 500 ±25% 10.2 600V 200V -- -- 3 9 14 20 28 34
F C 830 ±25% 6.1 600V 200V -- 3 7 13 18 24 32 38
B C 1000 +100/-0% 3.2 600V 200V -- 4 9 16 22 28 36 42
D C 5000 +100/-0% 0.64 300V 100V 10 16 22 30 35 41 50 56
  • Multiple EMI filtered connector options including threaded inserts, grounding bracket, a stand-off with board lock feature, grounding bracket with board lock, gold plating, and water block
  • Design flexibility: 9 through 50 line construction, high density, mixed pin loading, and selectively loaded lines
  • Compact design: interchangeable with standard d-sub connectors
  • Performance: gold plated connects
  • Superior EMI filtering at high-frequency interference
  • Options available: hardware, mounting, waved metal gaskets, hooded strain reliefs, combined filter types, and plating
  • Data Sheet - Combo Filtered D-Sub Connectors
Shell Steel, tin-plated
Power Contacts Brass, gold plated .000030in (.000762 µm) minimum
Signal Contacts Pin: brass, gold plated .000030in. (.000762µm) minimum
Socket: copper alloy, gold plated .000030 in. (.ooo762µm) min.
Insulator Glass-filled polyester, flammability UL94 V-0
Operating Temperature -55°C to +125°C
Capacitors Proprietary barium titanate ceramic formulations
Operating Voltage 200 VDC
Current Rating 40 amps
Insulation Resistance 1 Gohm at 100 VDC
Capacitance 470, 820, 1,000, 1,500, or 4,000 pF (FT only) ±20%
(10-5,000 pF available for signal pins, consult factory for the part number on values above 1,500 pF and below 470 pF)
Dielectric Withstanding Voltage 600 VDC
  • Low cost, high-performance ferrite EMI filter with no distortion of waveforms
  • Saving cost and space by replacing individual ferrite bead filters with .318" footprint
  • Provides both pin-to-ground and pin-to-pin EMI filtering
  • Option to install directly over PCB trace pattern with no shorting
  • 4-40 UNC locking insert shell eliminates loose hardware
  • Metal shielding front shell, gold plated contacts
  • RoHS compliant with exemption 7, full compliant versions available
  • Data Sheet - Ferrite Filtered D-Sub Connectors
Shell Steel, tin-plated
Housing UL 94V-0 rated thermoplastic, black
Contacts Phosphor bronze (sockets) or brass (pins)
Contact Plating Gold flash (<10 µin) over nickel
Frequency Range 10-300 MHz
Current Rating 5 amps
Dielectric Withstanding Voltage 1000 VAC for one minute
Insulator Resistance 1000 Megaohms min. @ 500 VDC
  • EMI filtered connectors designed to MIL-C-24308
  • Capacitance values from 80 pF to 4000 pF
  • EMI filter type feedthrough C
  • Selectively specify and filter each contact position
  • Available in feedthrough capacitive configurations
  • RoHS compliant with exemption 7. Fully compliant versions are available.
  • Data Sheet - High Density Filtered D-Sub Connectors
Shell Zinc diecast, nickel-plated
150 µinches (3.81 µm) min.
Insulators Glass-filled polyester, flammability UL94 V-0
Pin Contacts Copper alloy CA725, 15 µin (0.38 µm) gold plated* over nickel
Socket Contacts Copper alloy CA725, 30 µin (0.76 µm) gold plated* over nickel
Ground Plate Brass, solder plated
Operating Temperature -40°C to +125°C
Capacitors Proprietary barium titanate ceramic formulations

*Heavier gold plating available upon request

**Other environmental tests such as shock, vibration, humidity, etc. Contact us for more details.

EMI Filter Designation EMI Filter Circuits Capacitance 3 dB Cut-off Frequency
Max.
(MHz)
DWV Working Voltage DC

-55°C to +125°C

Minimum Insertion Loss - Decibels (dB)
Value
(pF)
Tol. 5 MHz 10 MHz 20 MHz 50 MHz 100 MHz 200 MHz 500 MHz 1 GHz 2 GHz
15 C 85 ±25% 60 300V 100V -- -- -- -- 1 6 16 21 22
16 C 180 ±25% 28 300V 100V -- -- -- 1 8 10 18 25 26
18 C 1000 ±25% 5.1 300V 100V -- 3 8 14 20 25 32 35 41
19 C 4000 ±25% 1.3 300V 100V 8 13 19 26 31 37 45 48 52
  • "Drop-in" replacements for unfiltered d-sub connectors with compact design, featuring .318" footprint
  • Tubular feedthrough capacitors provide EMI filtering superior to on-board components
  • Full interchangeability; based on MIL-C-24308
  • Selective EMI filters in shell sizes 9, 15, and 25 with board lock feature and 4-40 mounting threads
  • Greater than 40 dB filtering up through 1 GHz without resonance
  • Bi-directional control of EMI at the I/O ports
  • Data Sheet - Low Profile Filtered D-Sub Connectors
Shell Steel, tin-plated
Insulators Glass-filled polyester, flammability UL94 V-0
Pin Contacts Copper alloy CA725, 15 microinches (0.38 µm) gold plated* over nickel
Socket Contacts Copper alloy CA725, 30 microinches (0.76 µm) gold plated* over nickel
* Heavier gold plating available upon request
Ground Plate Phosphor bronze, nickel-plated
Operating Temperature -40°C to +125°C
Capacitors Proprietary barium titanate ceramic formulations
Current Rating 5 amps
RF Current Rating 0.3 amps
Contact Resistance 10 Milliohms max.
Capacitance 120, 440, 840, 1,000, 1,500 pF +- 30%
Working Voltage 100 VDC
Dielectric Withstanding Voltage 300 VDC
Insulation Resistance 1 Gohm min.
UL Recognition Under the category of communication circuit accessories, File #E149046
*Other environmental tests such as shock, vibration, humidity, etc. are also performed. Contact us for more details.
Capacitance (pF)
Value +-30%
3 dB Cut-off
Freq. (MHz)
Insertion Loss (dB)
20 MHz 100 MHz 500 MHz 1 GHz 2 GHz 5 GHz
120 40 - 4 21 26 26 20
440 11 3 15 27 33 32 25
840 6 6 19 32 38 37 25
1000 3 8 21 35 41 38 25
1500 2 10 25 40 47 42 25