Development and manufacturing of inductive components such as coils, chokes and transformers from a lot size of 1.
SARFERT electronic GmbH
Perlesreut (Heiblmühle 2)New on Amplifa
About SARFERT electronic
SARFERT electronic GmbH, headquartered in Perlesreut (Lower Bavaria), has been developing and manufacturing inductive components since 1979 – from simple rod-core chokes to highly complex high-voltage transformers in chamber windings. The product range includes coils, chokes and transformers, produced on an order-specific basis from a lot size of one piece; around one million components are produced annually. The entire value chain – development, in-house toolmaking, injection moulding, winding, soldering, core assembly, vacuum impregnation and vacuum potting, marking and 100% inspection – takes place at the Heiblmühle site, partially supported by contract workers in the Czech Republic and Hungary. The products are used in the electronics and electrical engineering industry; purchasing and sales are international. The company employs 55 staff and is certified to DIN EN ISO 9001.
- Site
- Perlesreut
- Processes
- Development of inductive components, Toolmaking (tools, production equipment, gauges, test fixtures, injection moulds), CNC milling, Wire EDM, Die sinking EDM, Surface grinding (horizontal grinding), Milling, Turning
- Materials
- Enamelled copper wire, Epoxy resin (potting compound), PUR (casting resin), Lead-free tin (solder), Heat-resistant plastic (3D printing, up to 80 °C), Epoxy resin, PUR casting resin, lead-free tin
- Certificates
- DIN EN ISO 9001, UL monitoring, ISO 9001
- Founded
- 1979
- Employees
- 55
- Industries
- Electronics/Electrical engineering
- 01
Development
- 02
Toolmaking
- 03
Injection moulding / 3D printing
- 04
Winding
- 05
Soldering
- 06
Core assembly
- 07
Vacuum impregnation / vacuum potting
- 08
Marking
- 09
100% inspection
- 10
Packaging
Materials and Processes
Enamelled copper wire
Winding wires from 0.02 mm diameter for coils, chokes and transformers.
Epoxy resin
Potting compound for vacuum potting with the Scheugenpflug system.
PUR casting resin
Casting resin for impregnations and potting depending on the application.
lead-free tin
Solder for wave, dip and hand soldering.
heat-resistant plastic (up to 80 °C)
Material for prototypes and small series in 3D printing.
Injection moulding plastic
Injection moulding of coil bobbins, cups and holders.
Site
Perlesreut
DEDevelopment, toolmaking, manufacturing, administration
- Lot size
- from 1 piece
- Materials
- Enamelled copper wire, epoxy resin, PUR, plastics
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Development of inductive componentsEngineering | – | – | – | – | – |
| Toolmaking (tools, production equipment, gauges, test fixtures, injection moulds)Engineering | – | – | – | – | – |
| CNC millingMachining | – | – | – | – | – |
| Wire EDMMachining | – | – | – | – | – |
| Die sinking EDMMachining | – | – | – | – | – |
| Surface grinding (horizontal grinding)Machining | – | – | – | – | – |
| MillingMachining | – | – | – | – | – |
| TurningMachining | – | – | – | – | – |
| Drilling (pillar drilling machines)Machining | – | – | – | – | – |
| Injection moulding of coil bobbins, cups and holdersPlastics | – | – | – | – | Plastic |
| 3D printing (plastic, heat-resistant up to 80 °C, prototypes and small series)Additive | – | – | – | – | heat-resistant plastic (up to 80 °C) |
| Winding (transformers, coils, chokes; wires from 0.02 mm)Assembly | – | – | – | 1 piece | Enamelled copper wire from 0.02 mm |
| Soldering (wave and dip baths, hand soldering with lead-free tin)Joining | – | – | – | – | Lead-free tin (solder) |
| Core assembly (bonding or clipping, with intermediate testing using LCR meters)Assembly | – | – | – | – | – |
| Vacuum impregnationSurface | – | – | – | – | Casting resins PUR or epoxy |
| Vacuum potting (Scheugenpflug potting system with epoxy resin; manual vacuum potting withPlastics | – | – | – | – | Epoxy resin, PUR, Casting resins |
| Marking (inkjet printers, standard or customer-specific labelling)Surface | – | – | – | – | – |
| Testing (programmable test systems, 100% inspection, DC current sources/sinks,Testing | – | – | – | – | – |
| Quality inspection with digital 3D microscope and standard measuring equipmentTesting | – | – | – | – | – |
| Manufacture of inductive components (rod-core chokes to high-voltage transformers in chamberAssembly | – | – | – | from 1 piece | Enamelled copper wire, Ferrite/laminate cores (derived) |
19 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC milling machine | – | – | – | – | Perlesreut (Heiblmühle) |
| Wire EDM machine | – | – | – | – | Perlesreut (Heiblmühle) |
| Die sinking EDM machine | – | – | – | – | Perlesreut (Heiblmühle) |
| Horizontal surface grinding machine | – | – | – | – | Perlesreut (Heiblmühle) |
| Milling machine | – | – | – | – | Perlesreut (Heiblmühle) |
| Lathe | – | – | – | – | Perlesreut (Heiblmühle) |
| Pillar drilling machine | – | – | – | – | Perlesreut (Heiblmühle) |
| Profile projector | – | – | – | – | Perlesreut (Heiblmühle) |
| Measuring table with measuring instruments | – | – | – | – | Perlesreut (Heiblmühle) |
| Digital 3D microscope | – | – | – | – | Perlesreut (Heiblmühle) |
| Semi-automatic winding machine | – | 35 | – | – | Perlesreut (Heiblmühle) |
| Fully automatic winding machine | – | 1 | – | – | Perlesreut (Heiblmühle) |
| Toroidal core winding machine | – | 2 | – | – | Perlesreut (Heiblmühle) |
| Pullwinder (winding machine) | – | 4 | – | – | Perlesreut (Heiblmühle) |
| Wave and dip soldering bath | – | – | – | – | Perlesreut (Heiblmühle) |
| Potting system (vacuum potting) | Scheugenpflug | – | – | – | Perlesreut (Heiblmühle) |
| Inkjet printer (marking) | – | – | – | – | Perlesreut (Heiblmühle) |
| Programmable test system | – | – | – | – | Perlesreut (Heiblmühle) |
| 3D printer (plastic) | – | – | – | – | Perlesreut (Heiblmühle) |
Additional services
Quality
The site is certified to DIN EN ISO 9001, and UL requirements are regularly monitored by UL. Quality control uses standard measuring equipment, special measuring devices for transformers, a digital 3D microscope and programmable test systems for 100% inspection including partial discharge testing.
| Evidence | Perlesreut |
|---|---|
| ISO 9001 | |
| UL monitoring |
History
- 1410
Trade at the Heiblmühle since 1410; use of natural energy sources for the production facility
- 1979
Founded as a sole proprietorship; production of inductive components