1 / 5

Product

Hook-up & equipment wiresUL 2651 · CSA AWM I A FT11.27 mm (.050") IDC Pitch28 AWG (7/36) · 6–64 Ways

UL AWM 2651 Flat Ribbon CableUL AWM 2651 300 V 105 °C 1.27 mm (.050") pitch 28 AWG IDC mass-termination ribbon cable

Precision-extruded 1.27 mm (0.050") pitch flat ribbon cable certified to UL AWM Style 2651 (105 °C, 300 V, VW-1) and CSA FT1, aligning 6 to 64 parallel 28 AWG (7×36 tinned copper) conductors in a zip-separable grey PVC web with a red Pin-1 polarity stripe.

Flame-retardant

Approved

Oil-resistant

Cores × cross-section

Order designation: UL 2651 20-Way (25.4 mm wide)
Outer Ø min: 23.4 mm
Outer Ø max: 25.4 mm
Weight ≈: 38 kg/km
Min. bend R: 76 mm

Check against my drum All sizes (10)

Request a quote Datasheet WhatsApp

Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum

Voltage rating: 300 V RMS
Temp. rating: −20…+105 °C
Conductor pitch: 1.27 ± 0.05 mm
Impedance (Z0): 105 Ω (G-S-G)
Flame rating: UL VW-1 / FT1
Ways & gauge: 6–64W · 28 AWG

Typical values for this cable type, based on UL 758 Style 2651 · CSA AWM I A (105 °C, 300 V, FT1) — confirmed in the datasheet and quotation for your order.

Application fit

Is UL AWM 2651 right for your machine?

UL Style 2651 is the universal 0.050-inch (1.27 mm) pitch flat ribbon cable for one-stroke insulation-displacement-connector (IDC) mass termination onto standard 2-row 0.100-inch (2.54 mm) PCB box headers, D-Sub IDC connectors and DIP transition plugs.

Fixed installation

Suitable

Internal PCB-to-PCB IDC jumpers, display/keypad interconnects, JTAG/ISP headers and rack backplanes.

VFD inverter to AC motor screened feeder

With conditions

Can be wired in Ground-Signal-Ground (G-S-G) 105 Ω configuration; for cylindrical shielded cables use UL 2464.

Use UL 2464 Shielded

Trailing & towing

Not suitable

Internal electronic enclosure ribbon cable; not for external trailing.

Use EN 50264-2-2

Energy chain / drag chain

Not suitable

For discrete point-to-point thin-wall crimp harnesses, select UL 1061 SR-PVC.

Use UL 1061 SR-PVC

Typical machinesPCB-to-PCB 2.54 mm (.100") IDC box headersIndustrial PLC, HMI & display module jumpersJTAG, AVR/ARM debuggers & test fixturesPower-supply sense & control board linksTelecom, server & instrumentation sub-racks

Construction

Layer by layer

Shown: UL AWM 2651 20-Way 28 AWG (7/36) — twenty parallel 7×0.127 mm stranded tinned annealed copper conductors held on precision 1.27 mm (0.050") centres by a 0.89 mm thick grey 105 °C PVC web with a red Pin-1 polarity edge stripe.

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	28 AWG (7/36) tinned copper	Parallel 7×0.127 mm (0.08–0.09 mm²) stranded tinned annealed copper conductors per ASTM B33ASTM B33 · UL 758
2	1.27 mm (.050") pitch PVC web	Co-extruded 105 °C PVC insulation (0.25 mm min. wall) with tear-grooves allowing clean zip-separation for discrete breakoutUL 758 Style 2651
3	Grey PVC surface + red Pin-1 stripe	Precision 0.89 ± 0.08 mm flat profile in slate grey with a permanent red edge polarity stripe on Conductor No. 1UL 1581 VW-1 · CSA FT1

UL 2651 Standard Grey PVC + Red Pin-1 Edge (6 to 64 Ways, 28 AWG)

1.27 mm (.050") pitch flat ribbon cable for 2.54 mm (.100") 2-row IDC sockets and D-Sub connectors

UL 2651 Rainbow Colour-Coded Flat Ribbon (10 to 64 Ways, 28 AWG)

10-colour repeating EIA resistor-code extruded PVC ribbon for easy visual pin tracing during breakout

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on UL 758 Style 2651 · CSA AWM I A (105 °C, 300 V, FT1). Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage: 300 V RMS
Dielectric withstand voltage: 2000 V AC for 1 min · 2500 V AC spark test
Characteristic impedance (G-S-G): 105 Ω ± 10 % (at 1 MHz, Ground-Signal-Ground)
Capacitance & propagation delay: ≈ 45 pF/m (G-S-G at 1 MHz) · ≈ 4.6 ns/m · inductance ≈ 0.50 µH/m
Max. DC conductor resistance (20 °C): 28 AWG (7/36): ≤ 216 Ω/km

Thermal

Temperature rating: −20 °C to +105 °C continuous
Short-circuit / solder heat: +150 °C to +250 °C (5 s)

Mechanical

Conductor pitch (centre-to-centre): 1.27 ± 0.05 mm (0.050 ± 0.002 in)
Cable thickness: 0.89 ± 0.08 mm (0.035 ± 0.003 in) · insulation wall 0.25 mm (10 mil) nominal
Folding & breakout: Folds flat for 90° chassis turns and zips apart cleanly between webs for discrete termination

Resistance

Flame retardance: UL 1581 VW-1 vertical wire flame test & CSA C22.2 FT1
Chemical & moisture resistance: Resistant to oils, weak acids, alkalis and moisture

Reference standards

UL AWM style: UL 758 Appliance Wiring Material Style 2651 (105 °C, 300 V, VW-1)
CSA certification: CSA C22.2 No. 210 AWM Class I Group A (105 °C, 300 V, FT1)
Connector compatibility: Fits all IEC 60603-13 / MIL-DTL-24308 1.27 mm IDC ribbon connectors
RoHS & REACH: 2011/65/EU (RoHS 2) & EC 1907/2006 compliant

Identification

Web colour & polarity mark: Grey PVC web with Red edge stripe on Conductor 1 (or 10-colour EIA rainbow sequence)
Surface marking: E-File AWM STYLE 2651 105C 300V VW-1 28AWG CSA I A 105C 300V FT1 TEBAOFLEX
Customs tariff (HS): 8544.49 (insulated conductors ≤ 1000 V)

Sizes

10 standard UL AWM 2651 configurations

Typical UL 758 Style 2651 · CSA AWM I A (105 °C, 300 V, FT1) outer diameter limits, copper content and cable weight.

Dimensions & weights
Order designation	Cores × mm² / AWG	AWG ≈	Outer Ø min mm	Outer Ø max mm	Copper kg/km	Weight ≈ kg/km	Min. bend R mm
300 V 105 °C 1.27 mm (.050") Pitch 28 AWG Flat Ribbon (UL 2651, 10–64 Ways)
UL 2651 10-Way (12.7 mm wide)	10×28 AWG	28	11.7	12.7	8	19	38
UL 2651 14-Way (17.8 mm wide)	14×28 AWG	28	16.4	17.8	11	27	53
UL 2651 16-Way (20.3 mm wide)	16×28 AWG	28	18.7	20.3	12	30	61
UL 2651 20-Way (25.4 mm wide)	20×28 AWG	28	23.4	25.4	16	38	76
UL 2651 26-Way (33.0 mm wide)	26×28 AWG	28	30.4	33.0	20	49	99
UL 2651 34-Way (43.2 mm wide)	34×28 AWG	28	39.7	43.2	27	65	130
UL 2651 40-Way (50.8 mm wide)	40×28 AWG	28	46.7	50.8	32	76	152
UL 2651 50-Way (63.5 mm wide)	50×28 AWG	28	58.4	63.5	40	95	190
UL 2651 60-Way (76.2 mm wide)	60×28 AWG	28	70.1	76.2	48	114	229
UL 2651 64-Way (81.3 mm wide)	64×28 AWG	28	74.8	81.3	51	122	244

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Dimensions and weights are typical values per UL 758 Style 2651 · CSA AWM I A (105 °C, 300 V, FT1). Minimum fixed bending radius shown is 3 × OD.

Electrical & current ratings
Cross-section mm²	AWG ≈	Max. DC resistance 20 °C, Ω/km	Single wire in air 30 °C, A	Multi-core bundle 30 °C, A
0.08	28	248	1.5	1.2

Current ratings at 30 °C ambient in free air. Apply temperature and bundle grouping factors per applicable equipment standard.

Reel check

Will it fit your machine?

A first screen using datasheet values. Engineering confirms drum geometry, acceleration and tension with your quotation.

Cable sizeDrum core diameter (mm)

Cable length on drum (m)

Drum core 300 mm ≥ 152 mmBending radius OK (3 × OD 25.4 mm)

Minimum bending radius: 76 mm
Min. drum core diameter: ≈ 152 mm
Cable weight on drum: 1.9 kg
Copper content: 0.8 kg

Indicative only: based on the datasheet outer diameter and 3 × OD bending radius. Current derating for wound layers per DIN VDE 0298-4 is assessed separately.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

ConductorClass 5 stranding
Spark test100 % in-line
Lay-upCores, earth, fillers
SheathingInner, braid / screen, outer
Electrical testsAC voltage, resistance
DimensionsOD, wall thickness
Inspection documents & dispatchDrum & dispatch

Testing & inspection	Test value / reference	Frequency
Routine tests
AC dielectric voltage test	2.0 kV AC (50/60 Hz)	Every manufactured length
Conductor DC resistance	IEC 60228 / ASTM (tinned copper)	Every manufactured length
Sample tests
Flame propagation test	IEC 60332-1-2 / UL VW-1 / ISO 6722-1	Per production batch
Insulation & sheath material physical properties	UL 758 Style 2651 · CSA AWM I A (105 °C, 300 V, FT1)	Type approval

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

UL 758 Style 2651 · CSA AWM I A (105 °C, 300 V, FT1)CE · RoHS 2 (2011/65/EU) · REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

AWM STYLE 2651 105C 300V VW-1 28AWG CSA I A FT1 TEBAOFLEX

Delivery form: Export wooden drums, reels or coils, cut-to-length on request
Packaging: Heat-treated ISPM-15 timber drums or spools with sealed ends
Conductor / colour options: Custom core counts, stripe combinations or cut harnesses on request

Technical documents

Downloads

PDFUL AWM 2651 Flat Ribbon Cable – technical datasheet10 sizes · construction, technical data, approvals XLSXUL AWM 2651 spec data (Excel)All 10 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-20
Updated: 2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

Why does a 1.27 mm (0.050 inch) pitch ribbon cable mate with a 2.54 mm (0.100 inch) PCB header?

Standard 2-row 2.54 mm (0.100 inch) IDC box headers stagger their insulation-displacement forks across two rows offset by half a pitch (1.27 mm). A 1.27 mm pitch ribbon cable aligns every odd conductor with Row A and every even conductor with Row B in a single press stroke.

How is characteristic impedance controlled on an unshielded flat ribbon cable?

By terminating every alternate conductor to ground in a Ground-Signal-Ground (G-S-G) pinout on the IDC header, UL 2651 provides a controlled 105 Ω single-ended impedance and low crosstalk for high-speed digital buses.

What do the width values in the size table represent?

For flat ribbon cables, the nominal width equals Ways × 1.27 mm (for example, 20-way = 25.40 mm wide × 0.89 mm thick).

Can the conductors be separated for discrete crimping or soldering?

Yes. The co-extruded web between adjacent 28 AWG conductors is grooved so assembly technicians can zip-split individual conductors or groups cleanly without exposing the copper strands.

Request a quote

Get an engineering quote for UL AWM 2651

Your selection and application details are copied into the enquiry form below.

01Selected sizes

Use + Add next to a size or configuration.

02Reel & motion

Add your operating conditions here to include them in your enquiry.

Reel typeDrum core diameter (mm)Cable length on drum (m)Travel speed (m/min)Max. accelerationCycles per hourLength and quantityAmbient temperatureExposure (outdoor, water, oil, abrasion)Destination countryEquipment and operating conditions

03Message for our engineers

UL AWM 2651 Flat Ribbon Cable

Selected sizes:


Reel & motion:
- Reel type: 
- Drum core diameter (mm): 
- Cable length on drum (m): 
- Travel speed (m/min): 
- Max. acceleration: 
- Cycles per hour: 
- Length and quantity: 
- Ambient temperature: 
- Exposure (outdoor, water, oil, abrasion): 
- Destination country: 
- Equipment and operating conditions:

Send via WhatsApp

Datasheet Request a quote