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HQ Series

Highest Performance RFI Filters for Medical Equipment

UL Recognized
CSA Certified
VDE Approved

Catalog Data Sheet

HQ Series

The HQ series power line filters provide the highest available common-mode and differential-mode attenuation to RFI noise in the frequency range from 10kHz to 30MHz, for IEC 60601 and UL2601 patient-connected equipment, as well as all other electronic equipment that cannot tolerate any leakage current.

They are a size- and more cost-effective solution to the problem of meeting both medical leakage current limits and conducted emissions limits in equipment with high noise sources (such as switching power supplies). HQ series filters can help meet the following Conducted Emissions standards:

European Normalized Standards based on EN55022, Level B
FCC Part 15, Computing Devices, Class B.
FCC Part 18, ISM Equipment, Industrial and Consumer.

See Appendix C for more information on UL2601 health care applications

Note: When using the models with an IEC connector, remember that the leakage current of the companion line cord, GA400, is more significant than that of the filter - which may disqualify this line cord from use in patient care applications.

Electrical Schematic

3 Amp Models

6 Amp Models

Resistor location for reference only

Specifications

Maximum leakage current, each line to ground:
	@ 120 VAC 60 Hz	2 µA
	@ 250 VAC 50 Hz	5 µA

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 6A *
		* refer to part number for rating
Maximum Rated Current Peaks:
	3EHQ	10A
	6EHQ	18A

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

Current Rating	Frequency - MHz
Current Rating	.01	.02	.05	.15	.5	1	2	5	7	10	20	30

3A	19	24	32	44	44	40	38	28	25	22	13	10
6A	24	29	39	42	28	35	36	30	30	24	16	15


Line to line in 50 ohm circuit

Current Rating	Frequency - MHz
Current Rating	.01	.02	.05	.15	.5	1	2	5	7	10	20	30

3A	1	18	43	68	75	75	72	70	66	65	60	60
6A	6	10	43	70	75	75	75	65	50	55	50	40

Case Styles

HQ1

Download .STP files *

3EHQ1	6EHQ1

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

HQ3

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

3EHQ8 & 3EHQ8M (with metric insert)

6EHQ8 & 6EHQ8M (with metric insert)

Typical Dimensions
Wire Leads (min.) :	6.0	Wire Gauge:	18AWG
	152.4

* .STP files can be imported as 3D models into most CAD systems.
Files are compressed in .zip format for easy download

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.)
3EHQ1	3.85	2.07	1.78	2.938	3.34
3EHQ1	97.8	52.6	45.2	74.63	84.8

3EHQ3	2.56	2.07	1..78	2.938	3.34
3EHQ3	65.0	52.6	45.2	74.63	84.8

3EHQ8, 3EHQ8M	3.07	2.25	1.78	1.575	0.63 †
3EHQ8, 3EHQ8M	78.0	57.2	45.2	40.01	16.0

6EHQ1	4.98	2.27	1.8	4.063	4.47
6EHQ1	126.5	57.7	45.7	103.2	113.5

6EHQ3	3.69	2.27	1.8	4.063	4.47
6EHQ3	93.7	57.7	45.7	103.2	113.5

6EHQ8, 6EHQ8M	5.47	2.07	1.78	1.575	2.7 †
6EHQ8, 6EHQ8M	138.9	52.6	45.2	40.01	68.6

† ± .02 [.5]

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.

3EHQ1	6EHQ1
3EHQ3	6EHQ3
3EHQ8	6EHQ8
3EHQ8M	6EHQ8M

Line Cord	GA400

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.