1785/50100SF - 3M Electronic Solutions Division

Interconnect Solutions

http://www.3M.com/interconnects/

3M is a trademark of 3M Company.

For technical, sales or ordering information call

800-225-5373

3M™ Shielded/Jacketed, Flat Cable

.050" 28 AWG Stranded, Twisted Pair, PVC/PVC 1785 Series

• Meets external wiring requirements of National

Electrical Code, Article 725

• UL listed for US and Canadian markets

• Expanded copper shielding provides easier

termination than aluminum/mylar shielding

• 360 degree expanded copper shielding provides 20 db

average shielding effectiveness

• Twist and ﬂat repeat has variable length options

• See Regulatory Information Appendix (RIA) for

chemical compliance information

(RIA E1 & C1 apply)

Date Modied: May 5, 2009 TS-0308-C

Sheet 1 of 2

Physical

Jacket Material: Polyvinyl Chloride (PVC)

Color: Black

Primary Material: PVC

Color: 10 Color Repeat with Tan Common

Marking Standard: (UL) CL2 75C 28 AWG OR AWM 2912 3M NU

C AWM IIA/B 80C 150V FT1 EU <50V

Conductors: 28 AWG, 7 × 36 AWG [ 7 × Ø 0.127 ] Tinned Stranded Copper

Shielding: Expanded Copper

Electrical

Voltage Rating: USA: N.E.C. 725 CL2 or AWM 150V Canada: 150V EU: <50V

Insulation Resistance: (Primary Cable) > 1 × 109 Ω/10 ft. [ 3 m ]

Characteristic Impedance: Unbalanced Balanced

67 Ω 118 Ω

Capacitance: 24.7 pF/ft [ 81.0 pF/m ] 13.8 pF/ft [ 45.3 pF/m ]

Inductance: 0.11 μH/ft [ 0.36 μH/m ] 0.19 μH/ft [ 0.62 μH/m ]

Propagation Delay: 1.65 ns/ft [ 5.41 ns/m ] 1.63 ns/ft [ 5.35 ns/m ]

Velocity of Propagation: 62% 62%

Note: Unbalanced is measured between conductors within a pair with one conductor connected to the shield. Balanced is measured between conductors within a pair with the shield ﬂoating.

Environmental

Temperature Rating: USA: CL2; 75°C or AWM: -20°C to +80°C Canada: 80°C

Flammability Rating: USA: N.E.C. 725, CL2 Canada: FT1

UL File No.: E118773, Power Limited Circuit Cable CL2: (or AWM Style 2912)

Interconnect Solutions

http://www.3M.com/interconnects/

3M is a trademark of 3M Company.

For technical, sales or ordering information call

800-225-5373

3M™ Shielded/Jacketed, Flat Cable

.050" 28 AWG Stranded, Twisted Pair, PVC/PVC 1785 Series

TS-0308-C

Sheet 2 of 2

Ordering Information

1785/XX XX XX

Inch

[mm]

Tolerance Unless Noted

.0 .00 .000

Inch ±.1 ±.05 ±.010

[ ] Dimensions for Reference Only

Note:

1. The twist-ﬂat repeat can be speciﬁed from 8.5 inches

(16.5 cm) to 48 inches (1.219 m), and the ﬂat can be

speciﬁed as anything over 1 inch (2.54 cm)

2. Available in standard 100 ft and 200 ft rolls, please

specify when ordering. Contact 3M for availability of

custom roll lengths or other special requirements.

Number of Conductors

(See Table)

Blank = Standard

Variable Flat-Repeat Length

(See Variable Flat-Repeat Length Sufﬁx Table)

Blank = Standard

SF = Splice Free

Number of

Conductors 3M Part Number Dimension A Dimension B

10 (5 pair) 1785/10 0.63 [16.0] 0.450 ± .010 [11.43]

16 (8 pair) 1785/16 0.93 [23.6] 0.750 ± .015 [19.05]

20 (10 pair) 1785/20 1.13 [ 28.7 ] 0.950 ± .015 [ 24.13 ]

26 (13 pair) 1785/26 1.43 [ 36.3 ] 1.250 ± .015 [ 31.75 ]

34 (17 pair) 1785/34 1.83 [ 46.5 ] 1.650 ± .020 [ 41.91 ]

36 (18 pair) 1785/36 1.93 [ 49.0 ] 1.750 ± .020 [ 44.45 ]

40 (20 pair) 1785/40 2.13 [ 54.1 ] 1.950 ± .020 [ 49.53 ]

50 (25 pair) 1785/50 2.63 [ 66.8 ] 2.450 ± .020 [ 62.23 ]

60 (30 pair) 1785/60 3.13 [ 79.5 ] 2.950 ± .020 [ 74.93 ]

64 (32 pair) 1785/64 3.38 [ 85.9 ] 3.150 ± .020 [ 80.01 ]

Variable Flat-Repeat Length

Sufﬁx Table

Alternative Twist and Flat Repeats

Sufﬁx Repeat (in.) Flat (in.)

Blank

(Standard) 20.0 2.0

TO 22.0 4.0

TB 7.5 1.0

TD 43.0 3.0

BP 9.0 1.5

BA 10.5 2.0

BW 34.0 2.0

Example of alternate twist and ﬂat repeats

* Caliper in Twist Area is .15 ± .03 [ 3.8 ]

* 10 Color Repeat

Brown/Tan

Red /Tan

Orange /Tan

Yellow /Tan

Green /Tan

Blue /Tan

Violet /Tan

Gray /Tan

White /Tan

Black /Tan

.050 ± .002 Typ

[ 1.27 ]

*.12 ± .03

[ 3.0 ]

Tan

Paper

.005 [ 0.13 ] Ref

Expanded Copper

Brown

28 AWG, 7 X 36 AWG [ 7 X Ø 0.127]

Tinned Stranded Copper Conductors

PVC Primary

Insulation

.026 [ 0.66 ] Min

PVC Jacket

Section Through Termination Area

Clear PVC Carrier

2.0 ± .3

[ 51 ]

20.0 ± .7

[ 508 ]

(See note 1)

Regulatory Information Appendix

3M Electronic Solutions Division/Interconnect

EUROPE

Appendix E1: European Union RoHS

Directive 2002/95/EC, Restriction of the Use of Certain Hazardous Substances in Electrical & Electronic Equipment, as

amended by EU Commission Decision 2005/618/EC.

This product is RoHS Compliant 2005/95/EC.

“RoHS Compliant 2005/95/EC” means that the product or part (“Product”) does not contain any of the substances in excess of

the maximum concentration values in EU Directive 2002/95/EC, as amended by Commission Decision 2005/618/EC, unless

the substance is in an application that is exempt under EU RoHS. Unless otherwise stated by 3M in writing, this information

represents 3M’s best knowledge and belief based upon information provided by third party suppliers to 3M.

In the event any product is proven not to conform with 3M’s Regulatory Information Appendix, then 3M’s entire liability and

Buyer’s exclusive remedy will be in accordance with the Warranty stated below.

Appendix E2: European Union RoHS

Directive 2002/95/EC, Restriction of the Use of Certain Hazardous Substances in Electrical & Electronic Equipment, as

amended by EU Commission Decision 2005/618/EC.

This product contains lead in the compliant pin area in excess of the maximum concentration value allowed but is

compliant by exemption under EU Commission Decision 2005/747/EC.

“RoHS Compliant 2005/95/EC” means that the product or part (“Product”) does not contain any of the substances in excess of

the maximum concentration values in EU Directive 2002/95/EC, as amended by Commission Decision 2005/618/EC, unless

the substance is in an application that is exempt under EU RoHS. Unless otherwise stated by 3M in writing, this information

represents 3M’s best knowledge and belief based upon information provided by third party suppliers to 3M.

In the event any product is proven not to conform with 3M’s Regulatory Information Appendix, then 3M’s entire liability and

Buyer’s exclusive remedy will be in accordance with the Warranty stated below.

Appendix E3: European Union RoHS

Directive 2002/95/EC, Restriction of the Use of Certain Hazardous Substances in Electrical & Electronic Equipment as

amended by Commission Decision 2005/618/EC.

This product contains lead in the solder tail area in excess of the maximum concentration value allowed.

Unless otherwise stated by 3M in writing, this information represents 3M’s best knowledge and belief based upon information

provided by third party suppliers to 3M.

In the event any product is proven not to conform with 3M’s Regulatory Information Appendix, then 3M’s entire liability and

Buyer’s exclusive remedy will be in accordance with the Warranty stated below.

Appendix E4: European Union RoHS

Directive 2002/95/EC, Restriction of the Use of Certain Hazardous Substances in Electrical & Electronic Equipment, as

amended by EU Commission Decision 2005/618/EC, as amended by EU Commission Decision 2005/717/EC, as amended by

EU Court of Justice Decision 2008/C 116/04

This product contains decaBDE in the insulating material in excess of the maximum concentration allowed for ﬁnished

products subject to EU RoHS that are placed on the EU market after June 30, 2008.

Unless otherwise stated by 3M in writing, this information represents 3M’s best knowledge and belief based upon information

provided by third party suppliers to 3M.

In the event any product is proven not to conform with 3M’s Regulatory Information Appendix, then 3M’s entire liability and

Buyer’s exclusive remedy will be in accordance with the Warranty stated below.

RIA-2217B-E

Appendix E5: European Union RoHS

Directive 2002/95/EC, Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment, as

amended by EU Commission Decision 2005/618/EC.

This product contains lead in excess of the maximum concentration value allowed but is compliant by exemption under

Item 6 of the Annex to the Directive.

“RoHS Compliant 2005/95/EC” means that the product or part (“Product”) does not contain any of the substances in excess of

the maximum concentration values in EU Directive 2002/95/EC, as amended by Commission Decision 2005/618/EC, unless

the substance is in an application that is exempt under EU RoHS. Unless otherwise stated by 3M in writing, this information

represents 3M’s best knowledge and belief based upon information provided by third party suppliers to 3M.

In the event any product is proven not to conform with 3M’s Regulatory Information Appendix, then 3M’s entire liability and

Buyer’s exclusive remedy will be in accordance with the Warranty stated below.

CHINA

Appendix C1: China RoHS

Electronic Industry Standard of the People’s Republic of China, SJ/T11363-2006, Requirements for Concentration Limits for

Certain Hazardous Substances in Electronic Information Products.

This symbol, per Marking for the Control of Pollution Caused by Electronic Information Products, SJ/T11364-2006, means that the

product or part does not contain any of the following substances in excess of the following maximum concentration values in any

homogeneous material: (a) 0.1% (by weight) for lead, mercury, hexavalent chromium, polybrominated biphenyls or polybrominated

diphenyl ethers (excluding decaBDE); or (b) 0.01% (by weight) for cadmium. Unless otherwise stated by 3M in writing, this

information represents 3M’s best knowledge and belief based upon information provided by third party suppliers to 3M.

In the event any product is proven not to conform with 3M’s Regulatory Information Appendix, then 3M’s entire liability and

Buyer’s exclusive remedy will be in accordance with the Warranty stated below.

Appendix C2: China RoHS

Electronic Industry Standard of the People’s Republic of China, SJ/T11363-2006, Requirements for Concentration Limits for

Certain Hazardous Substances in Electronic Information Products.

This symbol, per Marking for the Control of Pollution Caused by Electronic Information Products, SJ/T11364-2006, means that

the product or part does contain a substance, as detailed in the chart below, in excess of the following maximum concentration

values in any homogeneous material: (a) 0.1% (by weight) for lead, mercury, hexavalent chromium, polybrominated biphenyls or

polybrominated diphenyl ethers (excluding decaBDE); or (b) 0.01% (by weight) for cadmium. Unless otherwise stated by 3M in

writing, this information represents 3M’s best knowledge and belief based upon information provided by third party suppliers to 3M.

The numerical reference in the symbol above should not be construed as a representation regarding the product’s life or an

extension of a product warranty. The product warranty is stated below. In the event any product is proven not to conform with

3M’s Regulatory Information Appendix, then 3M’s entire liability and Buyer’s exclusive remedy will be in accordance with the

product Warranty stated below.

RIA-2217B-E

Important Notice

All statements, technical information, and recommendations related to 3M’s products are based on information believed to be reliable, but the accuracy or completeness

is not guaranteed. Before using this product, you must evaluate it and determine if it is suitable for your intended application. You assume all risks and liability associated

with such use. Any statements related to the product which are not contained in 3M’s current publications, or any contrary statements contained on your purchase order

shall have no force or effect unless expressly agreed upon, in writing, by an authorized ofﬁcer of 3M.

Warranty; Limited Remedy; Limited Liability.

This product will be free from defects in material and manufacture for a period of one (1) year from the time of purchase. 3M MAKES NO OTHER WARRANTIES

INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. If this product is defective within the

warranty period stated above, your exclusive remedy shall be, at 3M’s option, to replace or repair the 3M product or refund the purchase price of the 3M product. Except

where prohibited by law, 3M will not be liable for any indirect, special, incidental or consequential loss or damage arising from this 3M product, regardless of

the legal theory asserted.

Please recycle. Printed in USA.

RIA-2217B-E

3M Electronics Solutions Division

6801 River Place Blvd.

Austin, TX 78726-9000

U.S.A.

1-800-225-5373

www.3m.com/interconnects 3M is a trademark of 3M Company.

Appendix C3: China RoHS