MMBZ5242B The MMBZ5242B is a 12V Zener diode from On Semiconductor with 300mW power dissipation and ±5% tolerance. It is designed for surface mount applications in a SOT-23 package.
Mfr Part #:

MMBZ5242B

Available from 4 distributors
Mfr Name: On Semiconductor
On Semiconductor
The MMBZ5242B is a 12V Zener diode from On Semiconductor with 300mW power dissipation and ±5% tolerance. It is designed for surface mount applications in a SOT-23 package.
Total Stock: 1,561 pcs
$ Price Range: $0.04

MMBZ5242B Available from 4 distributors

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MMBZ5242B Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Impedance (Max) (Zzt)
Mounting Type
Power
Supplier Device Package
Supplier Package
Tape & Reel
Tolerance
Voltage
Zener Voltage

MMBZ5242B Description

Short technical summary and product information.

The MMBZ5242B is a silicon Zener diode from On Semiconductor offering a nominal Zener voltage of 12V with a tolerance of ±5%. It is rated for a maximum power dissipation of 300mW, making it suitable for low-power voltage regulation and clamping applications.

 

This device features a maximum Zener impedance of 30 Ω and a reverse leakage current of 1 µA at 9.1V. The forward voltage is specified at 900 mV at a test current of 10 mA. These electrical characteristics support stable voltage reference and protection functions in compact designs.

 

The MMBZ5242B is housed in a surface mount SOT-23 package, also known as TO-236-3 or SC-59. It is designed for automated assembly and is suitable for space-constrained PCB layouts.

MMBZ5242B Quick Information

Product Type: Zener Diode
Canonical Name: MMBZ5242B Zener Diode 12V 300mW ±5%
Subcategory: Single Zener Diode

MMBZ5242B Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

MMBZ5242B Estimated Pricing

Qty Low High
36,000+ $0.04 $0.04

Estimated market price range - modelled values for guidance only, not live distributor offers.

MMBZ5242B Features

  • Nominal Zener voltage of 12V.
  • Maximum power dissipation of 300mW.
  • ±5% tolerance for voltage accuracy.
  • Surface mount SOT-23 package.
  • Maximum Zener impedance of 30 Ω.

MMBZ5242B Applications

  • Voltage regulation in low-power circuits.
  • Voltage reference for analog circuits.
  • Overvoltage protection in portable devices.
  • Waveform clipping and clamping circuits.

MMBZ5242B FAQs

7 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of the MMBZ5242B?

The nominal Zener voltage is 12V.

What is the power dissipation rating of the MMBZ5242B?

The maximum power dissipation is 300mW.

What is the tolerance of the MMBZ5242B Zener diode?

The tolerance is ±5%.

What package is the MMBZ5242B available in?

It is available in a surface mount SOT-23 package (also TO-236-3, SC-59).

What is the maximum Zener impedance of the MMBZ5242B?

The maximum Zener impedance is 30 Ω.

What is the reverse leakage current of the MMBZ5242B?

The maximum reverse leakage current is 1 µA at 9.1V.

What is the forward voltage of the MMBZ5242B?

The maximum forward voltage is 900 mV at 10 mA.

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