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Both UL1332 and UL1333 are standards for Teflon (FEP) insulated hook-up wires, but they have some key differences. Below is a detailed comparison of their features:
Common Features (UL1332 & UL1333)
Insulation Material: FEP(Teflon)
Excellent chemical & heat resistance
Low smoke emission when burned
High dielectric strength
Temperature Rating: Up to 200°C (392°F)Voltage Rating: 300V (standard)
Conductor Options:
Stranded or solid copper (often tinned for corrosion resistance)
Flame Retardant: Self-extinguishingApplications:
Aerospace, military, medical devices
High-temperature industrial & automotive wiringKey Differences Between UL1332 & UL1333
| Feature | UL1332 | UL1333 |
| Conductor Type| Bare or tinned copper |
| Primary Use| General high-temp applications|
| Skin Effect| Standard (not optimized for RF)|
| Corrosion Resistance| Good (tinned option available)|UL1332 → Best for general high-temperature wiring.
UL1333 → Best for RF, high-frequency, and superior conductivity needs.Specification and Parameter
Conductor
Insulator
Package
AWG
Conductor
Construction
(No.Φxmm)Diameter
mmInsulator Thickness
mmOverall Diameter
(mm)Coil (Mt/Roll)
30
7x0.1
0.31
0.3
0.91
610
28
7x0.127
0.37
0.3
0.97
610
26
7x0.16
0.49
0.3
1.14
610
19x0.1
0.50
0.3
1.11
610
24
7x0.2
0.61
0.3
1.25
610
19x0.12
0.60
0.3
1.21
610
22
7x0.254
0.78
0.3
1.42
610
19x0.15
0.76
0.3
1.42
610
20
7x0.31
0.95
0.3
1.60
305
19x0.19
0.96
0.3
1.63
305
18
7x0.39
1.19
0.3
1.83
305
19x0.235
1.18
0.3
1.83
305
16
7x0.49
1.53
0.35
2.15
305
14
19x0.37
1.86
0.35
2.16
200
12
19x0.47
2.32
0.4
3.01
100
10
37x0.43
3.02
0.4
3.71
100
Shipping packaging
Roll packing, Spool Packing, Carton ,With Pallet
FAQ
1. What is the key difference between UL1332 and UL1333?
UL1332: Uses tinned or bare copper, ideal for general high-temperature applications.
UL1333: Uses silver-plated copper, optimized for high-frequency (RF) and low-loss signal transmission.2. What temperature can these wires withstand?
Both are rated for -65°C to +200°C (-85°F to +392°F).3. Are UL1332 and UL1333 flame-resistant?
Yes, both have self-extinguishing FEP insulation with low smoke emission.4. What voltage rating do they support?
Standard rating: 300V (depends on wire gauge).5. Are they resistant to chemicals and oils?
Yes, FEP insulation resists fuels, solvents, acids, and moisture.6. Which one is more expensive?
UL1333 (due to silver plating) is typically 20-30% more costly than UL1332.7. Can I use UL1332 instead of UL1333 for general wiring?
Yes, if high-frequency performance isn’t critical, UL1332 is a cost-effective alternative.8. Are these wires RoHS compliant?
Yes, both meet RoHS and REACH environmental standards.9.. Where can I buy UL1332&UL1333 wire?
Welcome to Buy From Shenzhen City Runqi Wire Co.Ltd/Factory at Huizhou City
UL1332 and UL1333 FEP TEFLON Electric Wires Cable 300V 200Degree Hook UP Wires 16AWG/18AWG/20AWG/22AWG/24AWG
Common Features (UL1332 & UL1333) Insulation Material: FEP(Teflon) Excellent chemical & heat resistance Low smoke emission when burned High dielectric strength Temperature Rating: Up to 200°C (392°F)
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Contact Us
Factory Address: Floor 1to 3,Building B,Dingfang Industrial Area Tangjing Group BaiShi Village QiuChang Street HuiYang District HuiZhou City 516265
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