UL 3239 High Voltage Silicone Wire Philippines — 200°C / 60kV for Manila & Cebu Electronics OEMs
UL Style 3239 is the high-voltage DC wire within UL Subject 758 — certified for internal wiring in TV receivers and similar high-voltage electronic applications at up to 60,000 Vdc maximum and 200°C continuous temperature. For Philippine electronics manufacturers, neon sign fabricators, and high-voltage equipment assemblers, Style 3239 provides the UL-recognized construction for applications where standard 300V or 600V-class wire is entirely insufficient — ignition systems, CRT display high-voltage supplies, neon transformer secondary leads, and similar high-voltage electronic circuit internal wiring.
CableApex supplies Style 3239 directly to Philippine buyers in Manila, Cebu, and Davao with complete English-language UL documentation, 12-hour quote response, and minimum orders from 100 meters — providing UL-recognized high-voltage wire at practical procurement quantities for the Philippines’ mid-scale electronics manufacturing and specialty fabrication sector.
Technical Specifications — UL Style 3239
| Parameter | Value |
|---|---|
| UL Style | 3239 |
| UL Subject | 758, Section 3 |
| Temperature Rating | 200°C maximum (see facing page for individual ratings) |
| Voltage Rating | Up to 60,000 Vdc maximum (see facing page for individual ratings) |
| Flame Rating | Horizontal flame and VW-1 |
| AWG Range | 24 AWG – 10 AWG (copper); 12–10 AWG (aluminum); 27–20 AWG (resistance wire) |
| Conductor | Copper or nickel, solid or stranded; coated high-strength copper min 90% conductivity; copper may be tinned, silver or nickel plated |
| Insulation | Extruded or non-extruded thermoplastic and/or thermosetting — per facing page |
| Optional | Shield / Covering / Jacket — per facing page |
| Typical Use | Internal wiring of TV receivers or where acceptability has been determined by UL |
| UL Recognition | UL Recognized Component — file on record |
| MOQ | 100 meters |
| Quote Response | 12 hours — English language support |
High-Voltage Electronics in the Philippines — UL 3239 Application Context
The Philippines has a significant electronics repair, refurbishment, and specialty fabrication sector alongside its export-oriented OEM manufacturing base. Manila’s electronics districts — Raon Street in Quiapo and the surrounding areas — concentrate electronics component suppliers, repair workshops, and specialty fabricators serving both domestic and export customers. Cebu’s electronics manufacturing zone and Davao’s growing industrial sector add regional demand for specialty wire including high-voltage constructions.
High-voltage wire applications in the Philippine electronics context include neon and gas discharge sign fabrication — a significant industry in the Philippines serving both domestic commercial signage and export markets — where the secondary lead wire connecting neon transformers to electrode terminals must be rated for the transformer open-circuit output voltage of 3,000–15,000 Vac equivalent. CRT display servicing and refurbishment, still active in the Philippines for industrial and commercial display applications, requires high-voltage flyback transformer secondary wire rated for the 20,000–30,000 Vdc flyback output voltage. Electronic ignition systems for industrial gas equipment and commercial cooking equipment assembled or serviced in the Philippines require high-voltage-rated ignition lead wire matching the ignition transformer output specification.
For all these applications, UL Style 3239 — with its 60,000 Vdc maximum rating and 200°C thermal ceiling — provides the UL-recognized high-voltage wire construction that satisfies North American market compliance requirements for finished products incorporating these high-voltage circuits.
High-Voltage Application Categories for Philippine Buyers
- Neon and gas discharge sign fabrication — secondary lead wire connecting neon sign transformers to electrode terminals in neon and cold cathode fluorescent lamp signs fabricated in Manila and Cebu for domestic commercial signage and export markets, where the transformer secondary open-circuit voltage of 3,000–15,000 Vac equivalent requires high-voltage-rated wire throughout the secondary circuit routing from transformer to electrode boot connector.
- CRT display high-voltage supply wiring — flyback transformer secondary lead wire and high-voltage rectifier output wiring in CRT-type displays used in industrial monitoring, gaming, and specialty commercial display applications serviced and assembled in Philippine electronics workshops, where flyback output voltages of 20,000–30,000 Vdc require UL-recognized high-voltage wire rated for the DC operating voltage of the high-voltage power supply circuit.
- Electronic ignition system wiring for export equipment — ignition electrode lead wires in gas range and commercial burner ignition systems assembled or serviced in the Philippines for export to North American markets, where ignition module output voltages of 10,000–30,000 Vdc require high-voltage-rated UL AWM wire for the ignition lead connecting the ignition module to the spark electrode.
- High-voltage power supply OEM internal wiring — internal high-voltage circuit wiring in laboratory power supplies, scientific instruments, electrostatic equipment, and specialty industrial power supplies assembled by Philippine electronics OEM manufacturers for export to U.S. and Japanese markets, where internal circuit voltages in the kilovolt range require UL Style 3239 construction for all high-voltage internal wiring paths in UL-certified finished equipment.
Engineering Notes — Specifying UL 3239 Correctly
Maximum voltage is a ceiling, not a single rating: Style 3239’s 60,000 Vdc maximum represents the ceiling of the style family — individual product constructions are rated at specific voltages confirmed on the product facing page, not assumed to be 60kV for all builds. Common individual voltage ratings within Style 3239 include 3kV, 5kV, 10kV, 15kV, 20kV, 30kV, and 40kV DC. When specifying Style 3239, confirm that the individual construction’s facing page voltage rating meets or exceeds the peak operating voltage of your specific high-voltage circuit with adequate safety margin.
DC rating for electronic circuits: Style 3239 carries a DC voltage rating — appropriate for rectified high-voltage DC circuits in flyback power supplies, CRT high-voltage supplies, and electrostatic equipment where the operating voltage is DC. For AC high-voltage applications — such as neon transformer secondary leads or gas burner ignition transformer outputs — Styles 3304 or 3573 with AC voltage ratings are the correct specifications. Confirm whether your high-voltage circuit operates at AC or DC before specifying between these styles.
VW-1 flame rating — additional flame performance: Style 3239 carries both horizontal flame and VW-1 flame ratings — VW-1 being a more stringent vertical flame test than horizontal flame. This dual flame rating makes Style 3239 suitable for applications where vertical wire routing paths must meet VW-1 flame performance requirements — common in taller equipment enclosures where high-voltage wire routes vertically from a lower power supply to an upper display or output assembly.
Request a Quote — Philippines Manila & Cebu Supply
Submit your required voltage rating, AWG, insulation type, optional shield requirement, and annual volume estimate below. English-language quotation and technical support. Our team responds within 12 business hours. Free wire samples available for high-voltage qualification testing. FOB Shanghai and CIF Manila shipping terms available.
