Dongguan Chipsen Electronics Technology Co., Ltd.
| Usage | Audio / Signal / Impedance Matching |
| Efficency | ≥ 95% |
| Delivery Time | 4-5 Weeks |
| Core material | Laminated Silicon Steel / Permalloy |
| Payment Terms | T/T |
| Winding material | UL Approved Pure Copper Transformer |
| Phase Type | Single phase |
| Supply Ability | 10000000/Month |
| Product name | Audio Transformer |
| Frequency | 20Hz - 20KHz |
| Power Rating | 0.5VA - 1000VA |
| Packaging Details | Carton 1: 25.5 X 21.5 X 21cm Carton 2: 43.5 x 24.5 x 21 cm |
| Total Harmonic Distortion (THD) | < 0.1% |
| Certification | UL/CUL/ISO9001/ISO14001/RoHS/Reach/IATF16949 |
| Model Number | EI48-Audio Series |
| Place of Origin | China |
| Brand Name | Chipsen |
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Product Specification
| Usage | Audio / Signal / Impedance Matching | Efficency | ≥ 95% |
| Delivery Time | 4-5 Weeks | Core material | Laminated Silicon Steel / Permalloy |
| Payment Terms | T/T | Winding material | UL Approved Pure Copper Transformer |
| Phase Type | Single phase | Supply Ability | 10000000/Month |
| Product name | Audio Transformer | Frequency | 20Hz - 20KHz |
| Power Rating | 0.5VA - 1000VA | Packaging Details | Carton 1: 25.5 X 21.5 X 21cm Carton 2: 43.5 x 24.5 x 21 cm |
| Total Harmonic Distortion (THD) | < 0.1% | Certification | UL/CUL/ISO9001/ISO14001/RoHS/Reach/IATF16949 |
| Model Number | EI48-Audio Series | Place of Origin | China |
| Brand Name | Chipsen | ||
| High Light | EI48 pcb isolation transformer ，14mH pcb isolation transformer ，10VA isolation transformer pcb | ||
The EI48 Audio Transformer is a high-performance magnetic component designed for precision signal coupling and impedance matching in professional audio systems. Utilizing a high-permeability EI48 laminated core, this transformer is optimized for low-level signal processing where preserving the harmonic richness and tonal balance of the source material is paramount. Whether used for balancing unbalanced lines or as an output stage for small amplifiers, the EI48 provides a transparent electrical interface that eliminates ground loops and common-mode noise.
| Parameter | Typical Value / Spec |
|---|---|
| Core Type | EI48 Laminated Core |
| Mounting Type | Vertical / Horizontal PCB Mount / Lead Wire |
| Shielding | Optional Mu-metal / Steel Case Shielding |
| Dimensions | Approx. 48.0mm x 40.0mm x 42.0mm (Standard) |
| Frequency Response | 20Hz - 20KHz (+/- 1.0dB) |
| Impedance Matching | 600:600 / 10K:10K / 600:10K (Customizable) |
| THD (Distortion) | < 0.1% (at 1KHz, 0dBm) |
| Insertion Loss | < 1.5 dB (at 1KHz) |
| Phase Shift | < 5 Degrees (at 20Hz - 20KHz) |
| Power Handling | 50mW - 5W (Depending on stack) |
| Hi-Pot (Isolation) | 1.5KV - 2.5KV AC / 1min |
| Insulation Resistance | >=100MΩ (at 500V DC) |
| Core Material | Laminated Silicon Steel / Permalloy (Ni-Fe) |
| Winding Wire | 100% Pure Copper / Oxygen-Free Copper (OFC) |
| Insulation Class | Class B (130°C) |
| Operating Temp | ~20°C to +85°C |
| Compliance | RoHS, REACH, CE |
The core material dictates the "sonic signature" and technical limits of the transformer. Standard Silicon Steel is excellent for higher-level signals and output stages as it has a high saturation flux density, making it resistant to clipping at high volumes. However, for low-level studio or microphone signals, Permalloy is preferred because its significantly higher initial permeability allows the EI48 to maintain high primary inductance at very low signal levels. This results in much lower THD at low frequencies (20Hz -100Hz), where standard steel cores might introduce subtle non-linearities and bass roll-off.
In high-fidelity audio, high inter-winding capacitance can act as a low-pass filter or cause resonant "ringing" at the upper edge of the frequency spectrum. To mitigate this, our EI48 transformers employ sectionalized winding structures where the primary and secondary are split into multiple layers. This technique drastically reduces distributed capacitance, pushing the resonant frequency well above the audible range (typically >50KHz). This ensures a smooth high-frequency roll-off and excellent phase linearity, which is critical for maintaining accurate spatial imaging and "soundstage" in stereo applications.
Chipsen Electronics Technology Co., Ltd., established in 2000, is a specialized manufacturer of high frequency transformer, low frequency transformer, toroidal inductor, SMD power inductor, super high current inductor, choke coil and switch. Chipsen has got a good reputation in domestic and oversea markets which include North & South America, Europe and Southeast Asia.
Chipsen possesses a professional management team, as an ISO9001, ISO14001 & IATF16949 audited company, which always commits to producing environmental protection and qualified products. Our products are certified by UL Class B/Class F/Class H, CQC and RoHS, and obtained 21 patents.
These achievements mainly come from our strong R&D team, providing various solutions for temperature decreasing, noise cancellation and coupled radiation conductivity. Our products widely used in various fields of new energy, PV, UPS, Robotics, smart home, security systems, health care and communication.
Vision: To Be Global Transformer Brand Supplier
Mission: Create Values for Customers and Society, Grow with Customers and Staffs
Values: Customer First, Team Cooperation, Embrace Changes, Integrity, Creative & Happy
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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