Overview
Punched transistor mica insulators — the thin, thermally conductive, electrically isolating pads between power semiconductors and heatsinks. Natural muscovite remains the cost-advantaged choice against synthetic substitutes for TO-3/TO-220 packages, combining high dielectric strength with low thermal resistance at a fraction of ceramic pad cost.
Supplied by Wedge Industries Limited with manufacturing and processing bases in India, UK, Spain and China, exporting to 45+ countries. Browse related ranges: Insulation · Electrical Insulation, or see our phlogopite fire-resistant mica tape and muscovite mica tape for cable and coil taping duties.
Technical Specifications
| Material | Muscovite / phlogopite splittings or micanite |
| Fabrication | Punched / die-cut to customer drawing |
| Dielectric strength | ~20–25 kV/mm (thin mica, typical) |
| Tolerance | Per drawing — confirmed at order |
| Grades / sizes | TO-3, TO-220, TO-247 and custom footprints; 0.05–0.15 mm typical |
| HS code | 6814 90 90 |
| Indicative FOB price | ₹ 0.90–44 / pc (US$ 0.01–0.50 / pc) |
| Packing | Boxed in 100/1,000 pc packs |
| Origin | India (Giridih–Koderma mica belt / Wedge fabrication) |
| Documentation | MTC-style lot certificate; COO; responsible-sourcing traceability on request |
| MOQ & lead time | On request — quoted per specification |
Values marked typical are standard published properties for natural mica / micanite; lot-specific values are confirmed on the MTC. Prices are indicative planning benchmarks, not a quotation.
Applications
- Power transistor and MOSFET mounting
- Power supply and inverter assembly
- Audio amplifier output stages
- Rectifier and thyristor isolation
Export & Packing
Priority export markets: the USA, Mexico, Vietnam and Bangladesh. Boxed in 100/1,000 pc packs. FCL/LCL ex-Kolkata, Haldia and Nhava Sheva with complete export documentation — commercial invoice, packing list, COO (including India–UAE CEPA where applicable) and MTC-style lot certificates.
Why Buy From Wedge Industries Limited
- Direct access to Giridih–Koderma belt muscovite — India holds a near-monopoly in high-grade natural mica
- Two-track supply: bulk raw grades for volume plus fabricated micanite lines at OEM quality
- MTC-style certification per lot; responsible-sourcing traceability documentation available
- Fabrication to drawing: punching, die-cutting, CNC and winding capability
- Export to 45+ countries with in-house documentation and logistics support
FAQs
What is the price of transistor mica insulator in India?
Indicative export price is ₹ 0.90–44 / pc (US$ 0.01–0.50 / pc) FOB India, depending on grade, specification and order quantity. Final pricing is quoted per enquiry — request a quote for a firm offer with MOQ and lead time.
Which countries does Wedge Industries Limited export transistor mica insulator to?
Priority export markets for this product are the USA, Mexico, Vietnam and Bangladesh. Wedge Industries Limited exports to 45+ countries with FCL/LCL shipments ex-Kolkata, Haldia and Nhava Sheva, and full export documentation including COO.
What quality documentation is supplied with transistor mica insulator?
Every lot ships with an MTC-style certificate covering grade, visual quality and dimensional tolerance. Responsible-sourcing traceability documentation (mine-to-port chain of custody) is available for buyers with ESG due-diligence requirements.
Can transistor mica insulator be supplied to a custom specification?
Yes. TO-3, TO-220, TO-247 and custom footprints; 0.05–0.15 mm typical. Samples can be arranged before volume orders — share your drawing or specification when requesting a quote.
Get a firm quote: send your specification, drawing or target quantity — indicative range ₹ 0.90–44 / pc (US$ 0.01–0.50 / pc). Request a quote.
