Dongguan Chipsen Electronics Technology Co., Ltd.
| Working Frequency | 50Hz / 60Hz (50Hz - 400Hz Customizable) |
| Delivery Time | 15-22 wark days |
| Bobbin Material & Flammability | PBT / Phenolic (UL94 V-0 Rated) |
| Payment Terms | T/T |
| Audible Noise Level | < 30 dB @ 1m (Full Load) |
| Potting / Encapsulation Type | Epoxy Resin Encapsulated / Open Framing / Vacuum Impregnated |
| Efficiency & No-load Loss | Efficiency: ≥ 85% No-load Power: < 0.5W |
| Supply Ability | 5000 pcs per day |
| Terminal Lead & Pin Finish | Tinned Copper Pin (100% Matte Tin plating, Solderable) |
| Pin Pitch & PCB Footprint | Pitch: 5.0mm / 7.5mm / Custom (DIP / Through-Hole Mount) |
| Packaging Details | Small transformers: blister tray packaging + export cartons; Large transformers packed on wooden pallets. Custom packaging available upon request. |
| Winding Structure & Shielding | Split Bobbin / Faraday Shielding (Copper Foil Shield) |
| Model Number | EI33 |
| Certification | UL/cUL Class B/F/H, VDE, CQC |
| Brand Name | CHIPSEN |
| Place of Origin | China |
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Product Specification
| Working Frequency | 50Hz / 60Hz (50Hz - 400Hz Customizable) | Delivery Time | 15-22 wark days |
| Bobbin Material & Flammability | PBT / Phenolic (UL94 V-0 Rated) | Payment Terms | T/T |
| Audible Noise Level | < 30 dB @ 1m (Full Load) | Potting / Encapsulation Type | Epoxy Resin Encapsulated / Open Framing / Vacuum Impregnated |
| Efficiency & No-load Loss | Efficiency: ≥ 85% No-load Power: < 0.5W | Supply Ability | 5000 pcs per day |
| Terminal Lead & Pin Finish | Tinned Copper Pin (100% Matte Tin plating, Solderable) | Pin Pitch & PCB Footprint | Pitch: 5.0mm / 7.5mm / Custom (DIP / Through-Hole Mount) |
| Packaging Details | Small transformers: blister tray packaging + export cartons; Large transformers packed on wooden pallets. Custom packaging available upon request. | Winding Structure & Shielding | Split Bobbin / Faraday Shielding (Copper Foil Shield) |
| Model Number | EI33 | Certification | UL/cUL Class B/F/H, VDE, CQC |
| Brand Name | CHIPSEN | Place of Origin | China |
| High Light | EI33 pcb mount transformer ，Low Frequency pcb mount transformer ，Pin Type pcb current transformer | ||
The CHIPSEN EI33 Pin-Type Low Frequency Transformer delivers stable voltage transformation and reliable insulation for through-hole PCB assembly. Engineered with premium silicon steel laminations and durable copper windings, it ensures low power loss, low heat generation, and long-term operating efficiency.
| Specification Item | Standard Specifications | Industry / Application Needs |
| Model / Core Size | EI33 Pin-Type / DIP | Industrial controls, home appliances, audio equipment, power modules |
| Input Voltage (I/P) | 120V AC / 230V AC, 50/60Hz | North America (120V/60Hz), Europe/Asia (230V/50Hz), Global dual voltage (115V/230V) |
| Output Voltage (O/P) | Single / Dual outputs (e.g., 9V, 11.5V, 12V, 24V AC) | Small home appliance standby (9V-12V), Industrial relays (24V), Audio preamps (12V-0-12V) |
| Output Current / Power | 0.05A - 0.35A (approx. 1VA - 5VA) | Low-power standby control boards, meters, instrumentation |
| Pin Configuration | DIP / Through-Hole (e.g., Pin 2-6 Input, Pin 7-8 & 11-12 Output) | PCB layout compatibility for direct wave-soldering processes |
| Insulation Class | Class B (130°C) / Class F (155°C) | HVAC controllers, outdoor power equipment, high-temperature machinery |
| Dielectric Strength (Hi-Pot) | 3.75kV AC / 4.0kV AC (50Hz, 1 min) | High-safety medical devices, industrial automation, commercial appliances |
Company Details
Business Type:
Manufacturer
Year Established:
2007
Total Annual:
28820000-29820000
Employee Number:
400~450
Ecer Certification：
Verified Supplier
Chipsen Electronics - Supplier to Fortune Global 500 Companies Magnetic Components Engineered for Performance & Reliability Founded in 2007, Dongguan Chipsen Electronics Technology Co., Ltd. is a professional manufacturer specializing in magnetic components and micro switches. ... Chipsen Electronics - Supplier to Fortune Global 500 Companies Magnetic Components Engineered for Performance & Reliability Founded in 2007, Dongguan Chipsen Electronics Technology Co., Ltd. is a professional manufacturer specializing in magnetic components and micro switches. ...
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