WMZ75S Datasheet PDF – PTC thermistor – Sinochip

Part Number: WMZ75S

Function: PTC overcurrent protection thermistor

Package: Disk Type

Manufacturer: Sinochip

Image:

WMZ75S image

Description

A Positive Temperature Coefficient (PTC) thermistor is a temperature-sensitive resistor whose resistance increases with temperature. These devices are commonly used for overcurrent protection, resettable fuses, and self-regulating heating applications, thanks to their nonlinear resistance response.

 

WMZ75S Datasheet Information

Reference Information : WMZ11A

Characteristics

1. WMZ11A series PTC thermistor is pins resin coated parts.

2. High voltage withstanding capacity:420VAC-1000VAC

3. Small dimension

4. Applied for frequently switching

5. Delayed time stability.

6. Complete parts.

7. Switch life can be 100 000 cycles.

WMZ75S Datasheet

Application

1. Energy saving light.

2. Electronic ballast

 

Note

While Reddit-based discussions note the difficulty in sourcing equivalents, some alternatives like the Vishay PTCLL05P251TTE have been mentioned due to somewhat comparable thermal switch properties—though any substitution should be carefully evaluated per datasheet specifications.

 

WMZ11A Datasheet


WMZ11A pdf

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YD7377 PDF – 2 x 30W, Power Amplifier for CAR Radio

Part Number: YD7377 ( = TDA7377 )

Function: 2 x 30W, POWER AMPLIFIER

Package: MULTIWATT 15 Pin Type

Manufacturer: ST, ETC

Images:YD7377 pdf amplifier

Description

The YD7377 is a new technology class AB car radio amplifier able to work either in DUAL BRIDGE or QUAD SINGLE ENDED configuration. The exclusive fully complementary structure of the output stage and the internally fixed gain guaran-tees the highest possible power performances with extremely reduced component count. The on-board clip detector simplifies gain compression operation. The fault diagnostics makes it possible to detect mistakes during car radio set assembly and wiring in the car.

Features

1. MINIMUM EXTERNAL COMPONENTS COUNT :

(1) NO BOOTSTRAP CAPACITORS

(2) NO BOUCHEROT CELLS

(3) INTERNALLY FIXED GAIN (26dB BTL)

2. ST-BY FUNCTION (CMOS COMPATIBLE)

3. NOAUDIBLEPOPDURINGST-BYOPERATIONS

4. DIAGNOSTICS FACILITY FOR:

(1) CLIPPING

(2) OUT TO GND SHORT

(3) OUT TO VS SHORT

(4) SOFT SHORT AT TURN-ON

(5) THERMAL SHUTDOWN PROXIMITY

Pinouts

YD7377 pinout datasheet

Protections

1. SOFT SHORT AT TURN-ON

2. OVERRATING CHIP TEMPERATURE WITH

3. SOFT THERMAL LIMITER

4. LOAD DUMP VOLTAGE SURGE

5. VERY INDUCTIVE LOADS

6. FORTUITOUS OPEN GND

7. REVERSED BATTERY

Applications

  • Car radio audio amplifiers
  • Automotive infotainment systems
  • Vehicle audio systems
  • Automotive speaker amplifiers
  • Multi-channel car audio systems
  • Automotive radio head units
  • Vehicle entertainment systems

Alternative / Equivalent Products

  • TDA7377
  • TDA7375
  • TDA7384

YD7377 PDF Datasheet

YD7377
YD7377 pdf

Similar features and reference parts ( TDA7377 )