High Frequency Transformer Ferrite Core EPC25 Switching Power Supply Transformer For Doorbells

Short Description:

SANHE-EPC25

EPC25 is a switching power transformer used in electronic doorbells. It is mainly used to provide power supply of doorbell with power. The mains can be connected to maintain a continuous standby state. With a chip and pin structure, SMD automatic placement can be realized for higher production efficiency. Fully insulated design for longevity and safety in use, SANHE-25-201 can pass reliability test of strict standards.

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Product Detail

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Introduction

EPC25 transformer mainly supplies power to each functional module of the doorbell to realize image and sound transmission, data storage, sending control commands and other functions. It can output three sets of voltages at the same time, including power supply and protection. In addition, primary and secondary isolation protection is realized to prevent danger of leakage caused by circuit failures.

Parameters

Voltage & Current Load
Input（Type）	110-220V
Output（Type）	V1	V2	V3
Output（Type）	12V	12V	10V
Electrical Characteristics
NO.	ITEMS	TEST PIN	SPECIFICATION	TEST CONDITIONS
1	Inductance	8-9	1.3mH±10%	100KHz 1Vrms
2	Leakage	8-9	26uH Max	100KHz 1Vrms Pin 2,3,4,5,6,7,10,11 short
3	DCR	2-3	90mΩ Max	At 25℃
		4-5	80mΩ Max
		6-7	290mΩ Max
		8-9	2.5mΩ Max
		10-11	82mΩ Max
4	HI-POT	P-S	No short break	AC1.8KV/1mA/2s
4	HI-POT	P,s-Core	No short break	AC1.2KV/1mA/2s
5	Insulation resistance	P-S	No short break	AC1.5KV/1mA/60s
5	Insulation resistance	P,s-Core	No short break	AC1.0KV/1mA/60s

Dimensions:（Unit: mm）& Diagram

Features

1. SMD chip structure
2. Adopt internal shield winding to improve the anti-electromagnetic interference ability
3. Magnetic core with additional protective tape extends safety distance
4. There are strict size requirements for smoothness of the SMD pins
5. Blister packaging

Advantages

1. EPC25 SMD structure makes it possible to be installed by mounting technology which has high efficiency
2. Sufficient protecion of insulation and isolation for use safety
3. Designed with shielded winding, good EMC anti-interference ability
4. It can provide multiple stable output voltages at the same time, and the voltage fluctuation is small