What is the warranty policy?

We provide a 1-year warranty. If the transformer breaks due to quality issues, we will repair or replace it for free. Common damage causes include overload, short circuits, or harsh environments.

4 Pins Ei 30/18 2.3va PCB Mounted Transformer Encapsulated Transformers

Name: 4 Pins Ei 30/18 2.3va PCB Mounted Transformer Encapsulated Transformers
Brand: Hangzhou Udwells Technology Co., Ltd.
SKU: 2237002685

Zhejiang, ChinaHangzhou Udwells Technology Co., Ltd.

US$0.50-1.50

500 Pieces

Product profile

Customization

Available

Application

Power, Electronic, Instrument, Lighting, Rectifier, Audio

Phase

Single

Model NO.

Core

Core-type Transformer

Cooling Method

Dry-type Transformer

Winding Type

Multi-winding Transformer

Certification

ISO9001

Usage

Single-phase Transformer

Frequency Characteristics

Low Frequency

Shape of Core

Operating Temperature

-40ºCTO +125ºC

Storage Temperature

-25ºCTO+85ºC

Customize

Yes

Type

Ei/Toroidal

Installation Method

Vertical/Horizontal/with a Base/with a Cover

Transport Package

Export Standard Carton and Strong Pallet

Specification

EI Series Low Frequency Transformer

Origin

Zhejiang

Production Capacity

200000 PCS/Month

Key features

Customizable Design: Supports full customization including EI/Toroidal types, vertical/horizontal installation, and shielding layers.

High-Quality Materials: Uses new high-grade silicon steel sheets (H18/H14) and 100% pure copper wire for durability.

Strict Quality Testing: 100% factory inspection including Hi-Pot, inter-winding, and load tests with provided reports.

EMI Shielding Option: Optional copper foil shielding layer between coils to suppress electromagnetic interference.

ISO9001 Certified: Manufacturing process and product quality certified under ISO9001 standards.

1-Year Warranty: Free repair or replacement for quality issues within the 1-year warranty period.

Fast Sample Delivery: Samples typically ready in 3-5 days, with fees refundable upon bulk order.

Company profile

High Repeat Buyers ChoiceFast DeliveryPrivate MoldQuality Assurance

Hangzhou Udwells Technology Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 3 Years CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤2.87h

AI-Powered supplier vetting

SummaryHANGZHOU UDWELLS TECHNOLOGY CO. Ltd. is a combined company with a strong technological base and significant production capacity. It offers OEM services for popular brands and operates more than 10 production lines. However, there are gaps in R&D documentation and service capability procedures. The company does not hold SDKs for development, nor does it have overseas facilities or participate in trade shows. Its primary export market is Europe, and it has proximity to major ports in China.

Supplier typeThe supplier is identified as a 'Combined' type company, indicating a diverse business scope.

After-Sales capabilityThe supplier provides technical support for production and after-sales service but lacks documented procedures for service capability and customer complaint handling.

R&D capabilityThe company lacks R&D audit documentation and SDK availability, indicating limitations in software development and innovation processes.

Production capacityThe supplier operates 27 production lines, indicating robust manufacturing capacity. Its annual production output ranges from US$1 Million to US$2.5 Million.

Customization capabilityThe supplier provides OEM services for well-known brands, demonstrating its ability to customize production.

Product Q&A

Q:What specifications are needed for a custom transformer?

Please provide Input Voltage (with fluctuation range), Output Voltage & Current, Rated Power (VA/W), Frequency (50Hz/60Hz), Construction type (Toroidal/EI/R-type), Installation method, and Insulation Grade.

Q:What is the difference between Toroidal and EI transformers?

Toroidal transformers offer higher efficiency, less leakage magnetism, and smaller volume but are more expensive. EI transformers are lower cost, easier to maintain, and suitable for general industrial equipment.

Q:What is the MOQ and how is pricing determined?

MOQ is 2000 pcs. Price depends on power, material requirements (copper/silicon steel), and process complexity. Standard specs may have lower MOQs, while full customization requires higher MOQs (500-1000 pcs).

Q:What is the delivery time?

Standard products/small orders: 10-15 working days. New customization (with sample confirmation): Additional 5-7 days for sampling. Large orders: 15-30 days. Raw material price fluctuations may affect timing.

Q:Can I get samples before placing a bulk order?

Yes, samples are available for serious customers. Sample fee is usually required but can be refunded or deducted after placing a bulk order. Sample lead time is typically 3-5 days.