Q Series

Highest Performance RFI Filters for Switching Power Supply Emissions down to 10 kHz

UL Recognized
CSA Certified
VDE Approved

Catalog Data Sheet

Q Series

This series of RFI power line filters has been developed specifically for switching power supplies and is designed to be all the power line filtering needed to control conducted emissions all the way down to 10kHz. High attenuation is provided for both common mode and differential mode interference throughout the frequency range with no degradation of performance due to the large peak currents drawn by switching power supplies.

These filters are an ideal choice for applications that must meet emission limits below 150kHz, as well as the mandated limits above 150kHz. In most cases they will bring such equipment into compliance with the B-level limits of CISPR 22. They are also well suited for bringing ISM equipment (such as ultrasonic cleaners) into compliance with the limits of FCC Part 18, from 10kHz to 30MHz.

The EQ models meet the very low leakage current requirements VDE portable equipment, and (120 Volt) UL544 non-patient medical equipment. The VQ models offer higher common mode performance at the expense of higher leakage current, but still meet the leakage current limits of UL, CSA, and VDE non-portable equipment.

Electrical Schematic

3EQ & 3VQ Models

6EQ & 20EQ Models

Resistor location for reference only

Specifications

Maximum leakage current, each line to ground:
		VQ Models	EQ Models
	@ 120 VAC 60 Hz (3A, 20A)	.73 mA	.22 mA
	@ 120 VAC 60 Hz (6A)	-	.29 mA

	@ 250 VAC 50 Hz (3A, 20A)	1.27 mA	.38 mA
	@ 250 VAC 50 Hz (6A)	-	.51 mA

Hipot rating (one minute):
	line to ground	2250 VDC
	line to line	1450 VDC

Operating Frequency:		50 / 60 Hz

Rated voltage (max.):		250 VAC

Rated Current:		3A to 20A *
		* refer to part number for rating

Minimum insertion loss in dB:
Line to ground in 50 ohm circuit

Current Rating	Frequency - MHz
Current Rating	.01	.02	.05	.15	.5	1	5	10	30

3VQ	22	27	37	50	55	55	55	50	55
3EQ	22	27	36	47	47	43	45	45	45
6EQ	26	31	20	68	72	72	65	65	65
20EQ1	6	10	8	39	60	65	65	65	55
20VQ1	6	10	8	39	60	65	65	65	55

Line to line in 50 ohm circuit

Current Rating	Frequency - MHz
Current Rating	.01	.02	.05	.15	.5	1	5	10	30

3VQ	1	17	42	65	75	75	60	65	65
3EQ	1	17	42	65	75	75	65	65	60
6EQ	6	10	43	70	75	75	65	55	55
20EQ1	15	20	20	46	65	70	65	60	60
20VQ1	15	20	20	46	65	70	65	60	60

Case Styles

Typical Dimensions
Terminals (5)	.250	Holes (4)	.07 Dia.
	6.35		1.8
Slot	.07 x .16	Mounting Holes (2)	.188 Dia
	1.8 x 4.1		4.78

Typical Dimensions
Wire Leads (min.) :	4.0	Wire Gauge:	18AWG
	101.6
Mounting Holes (2)	.188 Dia
	4.78

3VQ/EQ8 & 3VQ/EQ8M (with metric insert)

Typical Dimensions
Wire Leads (min.) :	4.0	Wire Gauge:	18AWG
	101.6

6VQ/EQ8 & 6VQ/EQ8M (with metric insert)

Recommended Panel Cutouts

tolerance ± .005 [0.13]

Back mount only

Case Dimensions

Part No.	A	B	C	D	E
	(max.)	(max.)	(max.)	± .015	(max.)
	(max.)	(max.)	(max.)	± .38	(max.)
3VQ1, 3EQ1	3.85	2.07	1.78	2.938	3.34
3VQ1, 3EQ1	97.8	52.6	45.2	74.63	84.8

3VQ3, 3EQ3	2.56	2.07	1.78	2.938	3.34
3VQ3, 3EQ3	65.0	52.6	45.2	74.63	84.8

3VQ8, 3VQ8M, 3EQ8, 3EQ8M	3.07	2.25	1.78	1.575	0.63 †
3VQ8, 3VQ8M, 3EQ8, 3EQ8M	78.0	57.2	45.2	40.01	16.0

6EQ1	4.98	2.27	1.80	4.063	4.47
6EQ1	126.5	57.7	45.7	103.2	113.5

6EQ3	3.69	2.27	1.80	4.063	4.47
6EQ3	93.7	57.7	45.7	103.2	113.5

6EQ8, 6EQ8M	5.47	2.07	1.78	1.575	2.70
6EQ8, 6EQ8M	138.9	52.6	45.2	40.01	68.0

20EQ1, 20VQ1	6.66	2.07	2.28	5.625	6.03 †
20EQ1, 20VQ1	168.1	52.6	57.9	142.9	153.2

† ± .02 [.05]

Part Numbers

Click on any part number for distributor stock status and eCommerce Links. For more information refer to the Corcom Part Numbering System reference.

3EQ1	3VQ1
3EQ3	3VQ3
3EQ8	3VQ8
3EQ8M	3VQ8M
6EQ1	20EQ1
6EQ3	20VQ1
6QE8
6EQ8M

USA Customer Service:	1-800-468-2023
Corcom Products Direct:	1-847-680-7400
Germany:	49-89-6089-0

Dimensions are in inches and millimeters unless otherwise specified. Values in italics are metric equivalents. Dimensions are shown for reference purposes only. Specifications subject to change.