SMPZ3940B-E3/85A

Product Overview

Belongs to: Electronic Components
Category: Voltage Regulator
Use: Regulating voltage in electronic circuits
Characteristics: High precision, low dropout voltage, thermal shutdown protection
Package: TO-252-3 (DPAK)
Essence: Efficient voltage regulation
Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

Input Voltage Range: 4.5V to 40V
Output Voltage Range: 1.2V to 37V
Output Current: 1.5A
Dropout Voltage: 1.5V at 1A
Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

Input
Ground
Output

Functional Features

High Precision: Provides accurate and stable output voltage
Low Dropout Voltage: Suitable for low input voltage applications
Thermal Shutdown Protection: Safeguards the device from overheating

Advantages

Wide input voltage range
Compact package size
Thermal protection enhances reliability

Disadvantages

Limited output current compared to some alternatives
Higher dropout voltage under heavy loads

Working Principles

The SMPZ3940B-E3/85A operates by comparing the output voltage to a reference voltage and adjusting the pass element to maintain a constant output voltage.

Detailed Application Field Plans

This voltage regulator is suitable for various applications including: - Battery-powered devices - Automotive electronics - Industrial control systems

Detailed and Complete Alternative Models

LM2940-N
- Category: Voltage Regulator
- Characteristics: Low dropout, adjustable output
- Package: TO-220
- Output Current: 1A
- Operating Temperature Range: -40°C to 125°C
L78L33ACZ
- Category: Positive Voltage Regulator
- Characteristics: Low cost, fixed output voltage
- Package: TO-92
- Output Current: 100mA
- Operating Temperature Range: 0°C to 125°C

In conclusion, the SMPZ3940B-E3/85A voltage regulator offers high precision and thermal protection, making it suitable for a wide range of electronic applications. While it has limitations in terms of output current and dropout voltage, there are alternative models available to suit specific requirements.

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Listen Sie 10 häufige Fragen und Antworten im Zusammenhang mit der Anwendung von SMPZ3940B-E3/85A in technischen Lösungen auf

What is SMPZ3940B-E3/85A?
- SMPZ3940B-E3/85A is a 40V Zener diode designed for voltage regulation and protection in various electronic circuits.
What are the typical applications of SMPZ3940B-E3/85A?
- SMPZ3940B-E3/85A is commonly used in voltage regulator modules, power supplies, and automotive electronics for overvoltage protection.
What is the maximum voltage rating of SMPZ3940B-E3/85A?
- The maximum voltage rating of SMPZ3940B-E3/85A is 40V, making it suitable for regulating and protecting circuits within this voltage range.
What is the power dissipation capability of SMPZ3940B-E3/85A?
- SMPZ3940B-E3/85A has a power dissipation capability of 1.5W, allowing it to handle moderate power levels in circuit protection applications.
Can SMPZ3940B-E3/85A be used for reverse polarity protection?
- Yes, SMPZ3940B-E3/85A can be utilized for reverse polarity protection by connecting it in series with the power supply input.
What are the temperature specifications for SMPZ3940B-E3/85A?
- SMPZ3940B-E3/85A has an operating temperature range of -65°C to +175°C, making it suitable for use in a wide range of environmental conditions.
Is SMPZ3940B-E3/85A RoHS compliant?
- Yes, SMPZ3940B-E3/85A is compliant with the Restriction of Hazardous Substances (RoHS) directive, ensuring its environmental friendliness.
What is the package type of SMPZ3940B-E3/85A?
- SMPZ3940B-E3/85A is available in a surface mount DO-214AC (SMA) package, which is suitable for automated assembly processes.
Can SMPZ3940B-E3/85A be used in battery charging circuits?
- Yes, SMPZ3940B-E3/85A can be employed in battery charging circuits to provide overvoltage protection and voltage regulation for the charging process.
Are there any recommended application circuits for SMPZ3940B-E3/85A?
- Yes, the datasheet for SMPZ3940B-E3/85A provides recommended application circuits for various voltage regulation and protection scenarios, offering guidance for its implementation in technical solutions.