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DIN 76722 code designation
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FL : (Fahrzeugleitung: vehicle cable) voltage class A as defined in ISO 6469-3
FHL : (Fahrzeug-Hochvolt-Leitung: vehicle high-voltage cable) voltage class B as defined in ISO 6469-3
FZL : (Fahrzeug-Zündleitung: vehicle ignition cable) as defined in ISO 3808
F : flat cable
Z : multicore cable with cores that are easily separated
K : compressed conductor
Al : aluminium
W : resistor material
M : other conductor materials
R : reduced insulation thickness ("thin wall" as defined in ISO 6722)
U : ultra-reduced insulation thickness ("ultra-thin wall" as defined in ISO 6722)
S : special insulation thickness
nocode : thick-walled insulation ("thick wall" as defined in ISO 6722)
Code Meaning
Y PVC (polyvinyl chloride)
2Y PE (polyethylene)
4Y PA (polyamide)
5Y PTFE (polytetrafluorethylene)
6Y FEP (tetrafluorethylene/hexafluorpropylene)
7Y E-TFE (ethylene/tetrafluorethylene)
9Y PP (polypropylene)
10Y PVDF (polyvinylidene fluoride)
11Y TPE-U (thermoplastic polyurethane, PUR)
12Y PBT (polybutylene terephthalate)
13Y TPE-E (thermoplastic polyester elastomer)
31Y TPE-S (thermoplastic styrol-block-copolymer)
51Y PFA (perfluoroalkoxy alkane)
52Y MFA (perfluoroalkoxy methylvinylether copolymer)
91Y TPE-O (thermoplastic polyolefin elastomer)
NY non-standardized thermoplastics and thermoplastic elastomers
2G SiR (silicone rubber)
3G E/PRa (ethylene propylene rubber)
4G EVM (ethylene vinyl acetate)
5G CR (chloroprene rubber)
53G PE-C (chlorinated polyethylene)
NG non-standardized elastomers
Code Meaning
B foil shielding
C braided shielding, metal
D spiral wire (or served) shielding, metal
G braid, nonmetallic
L lacquering
Code Meaning
A symmetrical structure as specified in ISO 6722 (all parts)
B asymmetrical structure as specified in ISO 6722 (all parts)
C asymmetrical structure as specified in ISO 6722 (all parts), with finestrands
Sn tin-coated wire surface
Ni nickel-coated wire surface
Ag silver-coated wire surface
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The cable designations are based on DIN 76722.
Example 1:
Designation for an unshielded low-voltage cable (FL) with thin-walled insulation (R), code for radia‐
tion cross-linked PE insulation material (2X) as per DIN 76722, a nominal conductor cross section
of 1.5 mm2 (1,5), (/), a maximum strand diameter of 0.33 mm (0,33), with tinned strands (Sn), a
cable composition of type A (-A), and a maximum long-term service temperature Tmax = +125 °C
(T125):
FLR2X 1,5/0,33Sn-A T125
Example 2:
Designation for an unshielded low-voltage cable (FL), code for silicone insulation material (2G) as
per DIN 76722, a nominal conductor cross section of 35 mm2 (35), (/), with bare strands of max.
0.21 mm (0,21), a cable composition of type B (-B), and a maximum long-term service temperature
Tmax = +200 °C (T200):
FL2G 35/0,21-B T200
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Table 1 – Special Construction Features| Symbol | Meaning |
| F | Flat cable (general) |
| Z | Multi-core, separable cable |
| K | Compressed conductor |
Table 2 – Conductor Material Symbols| Symbol | Meaning |
| Al | Aluminium |
| W | Resistance conductor material |
| M | Other conductor materials |
Table 3 – Insulation Wall Thickness Symbols| Symbol | Meaning |
| R | Reduced wall thickness ("Thin wall" according to ISO 6722) |
| U | Ultra-reduced wall thickness ("Ultra-thin wall" according to ISO 6722) |
| S | Special wall thickness |
| (No symbol) | Thick wall ("Thick wall" according to ISO 6722) |
Table 4 – Thermoplastics and Thermoplastic Elastomers| Symbol | Material |
| Y | PVC (Polyvinyl chloride) |
| 2Y | PE (Polyethylene) |
| 4Y | PA (Polyamide) |
| 5Y | PTFE (Polytetrafluoroethylene) |
| 6Y | FEP (Tetrafluoroethylene / Hexafluoropropylene) |
| 7Y | E-TFE (Ethylene / Tetrafluoroethylene) |
| 9Y | PP (Polypropylene) |
| 10Y | PVDF (Polyvinylidene fluoride) |
| 11Y | TPE-U (Thermoplastic polyurethane) |
| 12Y | PBT (Polybutylene terephthalate) |
| 13Y | TPE-E (Thermoplastic polyester elastomer) |
| 31Y | TPE-S (Thermoplastic styrene block copolymer) |
| 51Y | PFA (Perfluoroalkoxyalkane) |
| 52Y | MFA (Perfluoroalkoxy-methylether copolymer) |
| 91Y | TPE-O (Thermoplastic polyolefin elastomer) |
| NY | Non-standardized thermoplastics or thermoplastic elastomers |
Table 5 – Elastomers| Symbol | Material |
| 2G | SiR (Silicone rubber) |
| 3G | E/PR (Ethylene/Propylene rubber) |
| 4G | EVM (Ethylene/Vinyl acetate) |
| 5G | CR (Chloroprene rubber) |
| 53G | PE-C (Chlorinated polyethylene) |
| NG | Non-standardized elastomers |
Table 6 – Non-Extruded Coverings| Symbol | Meaning |
| B | Foil shield |
| C | Metallic braid shield |
| D | Metallic wire wrap shield |
| G | Non-metallic braid |
| L | Lacquer coating |
Table 7 – Conductor Constructions and Surface Coatings| Symbol | Meaning |
| A | Symmetrical conductor construction according to ISO 6722 (all parts) |
| B | Asymmetrical conductor construction according to ISO 6722 (all parts) |
| C | Asymmetrical conductor construction, fine-stranded, per ISO 6722 |
| Sn | Tinned wire surface |
| Ni | Nickel-plated wire surface |
| Ag | Silver-plated wire surface |
DIN 76722 Cable Designation Breakdown Example: FLRYBDY 3 × 0.5 – B + 0.5 Sn – A T105| Section | Code | Description |
| Cable Type | FL | Automotive cable (Fahrzeugleitung) |
| Conductor Material | R | Copper (default, no marking) |
| Insulation Thickness | R | Reduced wall thickness ("Thin wall" per ISO 6722) |
| Insulation Material | Y | PVC |
| First Shielding | B | Foil shield |
| Second Shielding | D | Wire wrap shield (metallic) |
| Non-extruded Covering | Y | PVC braid |
| Sheath Material | D | PVC jacket |
| Conductor Count | 3X | 3 insulated cores |
| Cross-Section (main) | 0.5 | 0.5 mm² conductor size |
| Additional Cross-Section | +0.5 | Additional conductor 0.5 mm² |
| Surface Coating | Sn | Tinned conductor surface |
| Conductor Structure | A | Symmetrical conductor (ISO 6722) |
| Temperature Class | T105 | Up to 105°C operating temperature |