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Description
3M 3749-40 Ribbon Cable, Round Conductor Flat, Grey, 40 Core, 30 AWG, 0.051 mm�The 3749 series from 3M are round conductor flat cable. The ribbon cable has 30AWG solid conductors on 0. 025inch spacing that allows for mass termination. The Thermoplastic elastomer (TPE) insulation provides excellent transmission properties. Zippable for branching or discrete termination Meets SCSI 3 Fast 20 characteristic impedance requirements Gray colour insulation Tinned solid copper conductor Voltage rating of 150V Operating temperature range
The 3749 series from 3M are round conductor flat cable. The ribbon cable has 30AWG solid conductors on 0.025inch spacing that allows for mass termination. The Thermoplastic elastomer (TPE) insulation provides excellent transmission properties.
- Zippable for branching or discrete termination
- Meets SCSI-3 Fast-20 characteristic impedance requirements
- Gray colour insulation
- Tinned solid copper conductor
- Voltage rating of 150V
- Operating temperature range -40�C to +105�C
- 10 to 100 conductors based on ordering
- First conductor is identified by a blue marking on one edge of cable
- UL recognised (Style 20297) in FT2 flame retardant
- Close spacing permits higher signal density
Applications
Industrial, Power Management
Product details
| No. of Cores | 40Core |
| Reel Length (Metric) | - |
| Conductor Material | Tinned Copper |
| Pitch Spacing | 0.635mm |
| Jacket Material | TPE |
| Voltage Rating | 50V |
| Cable Width | 25.4mm |
| Reel Length (Imperial) | - |
| Product Range | 3749 Series |
| Wire Gauge | 30AWG |
| Jacket Colour | Grey |
| No. of Max Strands x Strand Size | Solid |
| Conductor Area CSA | 0.051mm� |
| Ribbon Cable Type | Flat Ribbon Cable |
Other details
| Brand | 3M |
| Part Number | 3749-40 |
| Quantity | 1 Metre |
| Technical Data Sheet EN |
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. Image is for illustrative purposes only. Please refer to product description.
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
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4.8 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Stunning Gentleman's Watch
Color: Grey
This is my second Tissot watch. It's quite stunning in person. The online photos don't do it justice. It has the look and feel of a much more expensive gentleman's watch which makes this purchase a great bargain. Tissot is a great reliable Swiss made watch brand. My first Tissot watch which is probably more than 20 years old still runs great. Very pleased with this purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 16, 2025
★★★★★ 5
Good Tissot Watch
Color: Grey
Arrived on time, in its original box, include a 2 year international warranty, into the box include a book with the Tissot brand history in Switzerland. Algo a second book with a whole catalog of Tissot watches men and women.
The watch looks better when you put in on your wrist. The “naval” blue really gives the clock a classy look. The stainless steel workmanship is really good, the metal is bright and perfectly polished. The metal wristband quality is very good, did not have any problem to adjust the size , I went to my preferred clock workshop for this job, they extracted a few pieces of the band to fit to my small wrist size. Have to get used to the butterfly latch, but after a few days, now I learned to open and close it without any effort. The clock it’s very accurate, I’ve been using my Tissot for near a month and it just increased a few seconds per week. I do the setup and check accuracy with my pc clock. In short, It”s a good value watch, nice, good looking, accurate.
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Reviewed in the United States on August 1, 2021
★★★★★ 5
Perfect everyday Watch
Color: Grey, Color: Grey
Super happy with this watch. It looks really clean and goes with pretty much anything dress it up or wear it casual. The blue face is fire in person and catches the light really nicely.
Feels solid on the wrist, not too heavy, and the quality is definitely there. I’ve been wearing it almost every day and it still looks brand new.
For the price, you really can’t beat it. Great everyday watch that looks way more expensive than it is. Would 100% buy again
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Stylish and inexpensive
Color: Grey
Great watch. Came in quickly from seller. Got it sized at a local shop. It’s a pretty stylish watch for the price point. I don’t have big wrists but I still think the face could be a little bigger. But it’s pretty sleek and I’m happy
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Reviewed in the United States on August 24, 2023
★★★★★ 5
Style and elegance
Color: Grey
Excellent
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Reviewed in the United States on May 28, 2026
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