UL 3135 high temperature silicone wire for power supply internal wiring
Product Overview
UL 3135 silicone wire is widely used in power supply assemblies where internal wiring is exposed to elevated temperature, confined routing space, or both. In many power units, wire is required to pass near transformers, resistors, switching devices, and thermal management sections that create localized heat. Under these conditions, buyers often avoid ordinary PVC lead wire and move to silicone-insulated constructions that remain flexible and easier to handle during assembly.
For OEM manufacturers, the value of UL 3135 is not only the temperature rating. It is also about process stability. A wire that routes cleanly inside a compact enclosure, strips consistently, and holds up better in heat-exposed sections can reduce assembly trouble and improve product consistency from batch to batch.
Key Ratings
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UL Style: UL 3135 (AWM, UL 758)
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Temperature Rating: up to 200°C
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Voltage Rating: 600V
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Insulation: silicone rubber
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Conductor: stranded copper, tinned copper optional
Why UL3135 Is Chosen for Power Supply Wiring
Power supply internal wiring is often more demanding than it looks. The wire may need to bend around corners, pass close to warm components, and still remain manageable for crimping or soldering. Silicone insulation gives the wire a softer handling feel than many standard constructions, which can help during installation in compact housings.
This is especially useful when buyers want to reduce stress during routing or avoid stiff wire paths inside crowded assemblies. In practical purchasing terms, UL 3135 is often selected because it solves both a heat issue and an assembly issue at the same time.
Typical Applications
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Internal wiring in switching power supplies
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Lead connections between terminals and power modules
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Harness routing near transformers or heat-generating components
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Internal wiring inside enclosed electrical assemblies
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OEM lead wire supply for heat-exposed power sections
Buyer Concerns Before Ordering
Buyers sourcing UL 3135 for power supply work usually focus on more than the style number. Common questions include:
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Which AWG sizes will be used in the same project?
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Will the assembly be crimped, soldered, or both?
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Is bare copper acceptable, or is tinned copper preferred for better soldering and storage stability?
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Does the routing path include narrow bends or tight enclosure corners?
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Is color consistency important across repeated production lots?
Selection Notes
If the main requirement is temperature resistance plus flexible routing, UL 3135 is often a strong fit. If the job also requires fluoroplastic insulation for chemical resistance or lower surface friction, UL1332 or UL10362 may be more suitable depending on the environment. If the wire is expected to face more extreme heat than silicone can practically handle, mica and fiberglass constructions should also be considered.
Quotation Information
To receive a faster and more accurate quotation, buyers should provide:
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Required AWG size or size range
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Bare copper or tinned copper requirement
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Color list
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Packaging format: spool, reel, or cut-to-length
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Estimated order quantity and destination market
Explore More AWM Wire Options
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UL 3135 Silicone Wire: https://cableapex.com/product-category/awm-wire/ul3135-silicone-wire/
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UL 1332 FEP Wire: https://cableapex.com/product-category/awm-wire/ul1332-fep-wire/
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UL 1007 Wire: https://cableapex.com/product-category/awm-wire/ul-1007-wire/
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UL 10362 PFA Wire: https://cableapex.com/product-category/awm-wire/ul10362-pfa-wire/
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Mica & Fiberglass High Temperature Wire: https://cableapex.com/product-category/awm-wire/mica-fiberglass-high-temperature-wire/
