EN
Encapsulated PCB Transformer for Industrial Power Supply Applications
Compact PCB-mounted transformer with fully encapsulated construction, customizable input/output voltage, rated power, pin layout and insulation system for industrial electronic equipment.
| Parameter | Typical Range / Available Options |
|---|---|
| Product Type | Low-frequency encapsulated PCB-mount transformer |
| Construction | EI laminated core, copper windings, insulated bobbin, protective enclosure and resin encapsulation |
| Rated Power | Typically 0.5 VA to 60 VA; other ratings subject to engineering review |
| Primary Voltage | 100 V, 110 V, 115 V, 120 V, 127 V, 200 V, 208 V, 220 V, 230 V or 240 V AC |
| Dual Primary Options | 2 × 115 V, 2 × 120 V or other series/parallel configurations |
| Secondary Voltage | Typically 3 V to 48 V AC; custom voltage available |
| Secondary Configuration | Single, dual, center-tapped or multiple independent windings |
| Frequency | 50 Hz, 60 Hz or 50/60 Hz |
| Output Type | Isolated AC output |
| Core Material | Laminated electrical steel selected according to power, loss and temperature-rise requirements |
| Winding Material | Specified-grade enameled copper wire |
| Dielectric Strength | Commonly designed within a 3,000–4,000 VAC range; final voltage and test duration depend on the approved insulation system and applicable standard |
| Insulation Resistance | Commonly ≥100 MΩ at 500 V DC; final acceptance criteria according to the approved specification |
| Insulation Class | Class B 130°C or Class F 155°C options |
| Temperature Rise | Defined according to rated load, ambient temperature, enclosure condition and applicable standard |
| Voltage Regulation | Optimized according to output voltage, load current, size and temperature-rise requirements |
| Encapsulation | Flame-retardant epoxy or other resin system selected according to project requirements |
| Housing | Standard or custom molded enclosure; flame-retardant material options available |
| Mounting | Through-hole PCB mounting |
| Pin Layout | Standard or fully customized pin spacing and pin assignment |
| Protection Options | Thermal fuse, PTC protection, current-limiting design or short-circuit-resistant design where required |
| Shielding Options | Electrostatic shield between primary and secondary windings |
| Compliance Options | IEC/EN 61558, UL 5085, CE, UL/cUL, RoHS and REACH requirements, subject to model and project scope |
| Marking | Model number, electrical rating, date code, batch code, customer logo or private label |
| Packaging | Individual partitions, trays, cartons and export pallets |
- Overview
- Recommended Products
- Visual Inspection: Routine or sampling
- Dimensional Inspection: Sampling, with critical dimensions controlled as specified
- Winding Resistance: Routine test
- Turns Ratio / Output Voltage: 100% routine test
- No-Load Current: 100% or agreed inspection plan
- No-Load Loss: Sampling or qualification
- Load Voltage and Regulation: Sample and periodic verification
- Insulation Resistance: Routine or sampling
- Dielectric Strength / Hi-Pot: 100% at the approved test level
- Temperature Rise: Type or qualification test
- Audible Noise: When required by the approved specification
- Solderability: Qualification or sampling
- Resistance to Soldering Heat: Verified according to the project requirement
Encapsulated PCB Transformer Specifications
The values above represent common design options rather than the guaranteed specification of every model. Final electrical ratings, dimensions, test limits and compliance requirements are defined in the ECKO-approved product specification and dimensional drawing.
Key Advantages of ECKO Encapsulated PCB Transformers
Custom Encapsulated PCB Transformer Options
Encapsulated PCB Transformer Applications
ECKO encapsulated PCB transformer provide compact AC voltage conversion and electrical isolation for industrial, commercial and consumer electronic assemblies. Each transformer can be customized around the PCB footprint, load profile, operating temperature and safety requirements of the end product.
Why Choose ECKO as Your Encapsulated PCB Transformer Manufacturer?
Engineering Design Based on Your Actual Application
Testing Items and Acceptance Standards
From winding continuity and output voltage to insulation withstand, temperature rise and solderability, ECKO verifies each PCB transformer according to the approved drawing, test specification and inspection plan.
Routine Production Tests
|
Visual and Dimensional Inspection Workmanship, labels, polarity marks, pin condition, outline dimensions, seated height, pin pitch and pin position are checked against the approved drawing. |
Winding and Output Verification Winding resistance testing checks conductor continuity and manufacturing consistency. Turns-ratio and output-voltage testing confirm the required secondary voltage and winding polarity at the specified primary input. |
No-Load and Rated-Load Performance No-load current and no-load loss are evaluated to confirm core assembly, winding consistency and standby performance. Rated-load voltage and regulation are verified under defined input and load conditions. |
|
Insulation Safety Testing Insulation resistance testing checks electrical separation between windings and accessible conductive parts. Dielectric strength testing verifies the specified insulation withstand level at the approved voltage and duration. |
Temperature Rise and Audible Noise Temperature-rise testing verifies thermal performance under defined mounting, ambient and load conditions. Audible-noise evaluation is performed when transformer hum or mechanical vibration is controlled by the project specification. |
PCB Pin Solderability PCB pin wetting and resistance to soldering heat are evaluated to support stable PCB assembly and repeatable solder-joint quality. |
Custom Encapsulated PCB Transformer Development Process
Encapsulated PCB Transformer FAQ
1. What is an encapsulated PCB transformer?
An encapsulated PCB transformer is a compact power transformer designed for direct mounting on printed circuit boards. The windings and core are enclosed in an insulating housing and encapsulated with resin to improve electrical insulation, mechanical stability, moisture resistance, and long-term reliability.
2. What is the difference between an encapsulated PCB transformer and an open-frame PCB transformer?
An encapsulated PCB transformer is protected by a molded housing and potting compound, while an open-frame PCB transformer has exposed windings and core structures. Encapsulation provides better protection against dust, moisture, vibration, and environmental contamination.
3. What power ratings are available for encapsulated PCB transformers?
Encapsulated PCB transformers can be manufactured in a wide range of power ratings, depending on the required input voltage, output voltage, PCB footprint, temperature rise, and application. Custom VA ratings can also be developed according to customer specifications.
4. Can you customize the input and output voltage?
Yes. We can customize primary and secondary voltages according to the customer's circuit requirements, including single-input, dual-input, single-output, dual-output, and multiple-secondary configurations.
5. Are encapsulated PCB transformers suitable for 50Hz and 60Hz?
Yes. Designs can be optimized for 50Hz, 60Hz, or 50/60Hz operation depending on the target market and electrical requirements.
6. Can an encapsulated PCB transformer be mounted directly onto a PCB?
Yes. The transformer can be designed with PCB pins at specified positions and spacing for through-hole mounting directly onto a printed circuit board.
7. What materials are commonly used for encapsulation?
High-quality insulating epoxy resin or other approved potting materials can be used depending on insulation, flame-retardant, thermal, and environmental requirements.
8. Can the transformer dimensions be customized?
Yes. Transformer dimensions, pin layout, mounting footprint, height, and housing structure can be customized where technically feasible.
9. What information is required for a quotation?
We normally require input voltage, output voltage, rated power or output current, frequency, dimensions, PCB pin layout, insulation requirements, application, and estimated order quantity.
10. Can you develop an encapsulated PCB transformer from an existing sample?
Yes. We can evaluate an existing transformer sample, drawing, specification sheet, or PCB layout and develop a compatible transformer according to the customer's technical requirements.
