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MMSZ5257BT1G

Name: MMSZ5257BT1G
Rating: 4.7 (12 reviews)

DIODE ZENER 33V 500MW SOD123

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製造商。部分 #MMSZ5257BT1G
包 SOD-123
資料表 MMSZ5257BT1G DataSheet
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規格

Supplier	onsemi
Package	Tape & Reel (TR),Cut Tape (CT)
Series	MMSZ52xxxT1G
ProductStatus	Active
Voltage-Zener(Nom)(Vz)	33 V
Tolerance	±5%
Power-Max	500 mW
Impedance(Max)(Zzt)	58 Ohms
Current-ReverseLeakage@Vr	100 nA @ 25 V
Voltage-Forward(Vf)(Max)@If	900 mV @ 10 mA
OperatingTemperature	-55°C ~ 150°C
MountingType	Surface Mount
Package/Case	SOD-123

概述

Description

MMSZ5257BT1G is a small-signal, surface-mount Zener diode from the MMSZ5xxx family. It provides a fixed Zener voltage for regulation, reference, or overvoltage protection in low-power circuits. The “BT1G” suffix indicates RoHS-compliant packaging (tape-and-reel) in a compact SOD-123 style package. The diode is operated in reverse bias to achieve its breakdown voltage; the cathode should be tied to the higher potential and the anode to ground. The exact Zener voltage (Vz) and tolerance are specified in the datasheet for this variant (typically ±5% for the B tolerance). Power rating is around 0.5 W in the SOD-123 package. For exact Vz and electrical characteristics, consult the manufacturer’s datasheet or distributor listings.

Features

Here are the typical features of MMSZ5257BT1G:
- Fixed Zener diode for voltage regulation and clamping
- Zener voltage: 5.7 V (nominal)
- Power rating: 0.5 W (SMD Zener)
- Package: MMSZ series, small surface-mount (SMD) package
- Tolerance: ±5% (VZ)
- Temperature range: -55°C to +125°C
- RoHS compliant; available in tape-and-reel packaging
Common uses: voltage references, transient/clamp protection, simple regulators in low-power circuits. For exact packaging (SOD-123/SOD-323) and tolerance details, refer to the datasheet.

Package

SOD-123 surface-mount package.

Pinout

- Pin count: 2 terminals (anode and cathode)
- Function: Zener diode used for voltage regulation/clamping (reverse-biased to maintain a defined Zener voltage for protection or reference).

Manufacturer

- Manufacturer: Vishay Intertechnology, Inc.
- About the company: A global, publicly traded manufacturer of electronic components and semiconductors, producing diodes, resistors, capacitors, inductors, optoelectronics, and related devices.

Application

MMSZ5257BT1G is a Zener diode. Typical application areas include:
- Low-current shunt voltage regulator and reference in analog circuits
- Voltage clamping and overvoltage protection on power rails and I/O lines
- Transient suppression in power supplies and consumer/automotive electronics
- Part of feedback/reference networks in regulators
- Signal conditioning (level shifting and clipping) for microcontrollers and op-amps.

Equivalent

MMSZ5257BT1G is a 5.7 V, 0.5 W Zener in a SOD-123 package. Typical equivalents:
- BZT52B5V7 (Vishay)
- BZT52H-B5V7 (Rohm)
Other vendors offer similar 5.7 V SOD-123 Zeners; use a cross-reference search (e.g., DigiKey/RS) for additional equivalents.