UL3443 300 V 105 °C XLPVC Hook-Up Wire

UL3443 is a XLPVC-insulated hook-up wire manufactured by Xinya Electronic Co., Ltd. It is rated 300 V, 105 °C. It is supplied in 15 recorded constructions spanning 20–28 AWG, with an overall diameter of 0.86–1.48 mm, cut to the length you order.

UL3443 at a glance

• 20–28 AWG, across 15 listed constructions
• Both solid (single-strand) and stranded conductors are listed — 5 solid and 10 stranded
• Insulation wall 0.27–0.28 mm
• Overall diameter 0.86–1.48 mm
• Max. conductor resistance 35.2–239 Ω/km at 20 °C DC (roughly 10.7–72.8 Ω per 1,000 ft)
• Routine withstand test on every listed row: 2000 VAC, 1 min

How UL3443 compares with its nearest alternatives

UL3443 and UL1430 share the 300 V rating and 105 °C temperature rating. Overall diameter runs 0.86–1.48 mm for UL3443 against 1.05–2.4 mm for UL1430. UL3443 is the tighter of the two where harness space is limited. Insulation wall is 0.27–0.28 mm against 0.39–0.46 mm. Size coverage is 20–28 AWG against 16–30 AWG.

Conductor construction and selection

Both conductor families are listed. Single-strand rows such as 1/0.32 at 28 AWG suit fixed routing and insulation-displacement termination, where the conductor is not flexed after installation. Stranded rows such as 7/0.127 at 28 AWG flex repeatedly and are the usual choice for hand-soldered harnesses and anything that has to follow a moving path. Conductor resistance is the same at a given size, so the choice between them is mechanical rather than electrical.

How to read the UL3443 table

“Insulation O.D. (mm)” is measured over the insulation, not over a jacket, tape or braid. Conductor resistance is stated at 20 °C DC per kilometre — divide by 3.281 for ohms per 1,000 ft. The withstand column is a routine production test applied to finished lengths, not a continuous working voltage.

Questions buyers ask about UL3443

Which sizes of UL3443 are available?

20–28 AWG, across the 15 constructions in the table below. Sizes outside the table can be quoted on request.

Can UL3443 be supplied in both solid and stranded conductor?

Yes. The documented range covers 15 constructions, of which 5 are single-strand and 10 are stranded. Give the construction, not only the AWG, when you request a quotation.

What overall diameter does UL3443 run to?

The documented range is 0.86–1.48 mm. Quote the size, not the style alone, when the diameter has to fit a specific gland, grommet or channel.