MMBZ5249B The MMBZ5249B is a 19V Zener diode from ON Semiconductor with 350mW power dissipation and ±5% tolerance. It is housed in a surface-mount SOT-23-3 package.
Mfr Part #:

MMBZ5249B

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
The MMBZ5249B is a 19V Zener diode from ON Semiconductor with 350mW power dissipation and ±5% tolerance. It is housed in a surface-mount SOT-23-3 package.
Total Stock: 30 pcs
$ Price Range: $0.04

MMBZ5249B Available from 1 distributor

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MMBZ5249B Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Forward Voltage (Max @ 10 mA)
Impedance (Max) (Zzt)
Mounting Type
Operating Temperature
Power
SVHC Present
Storage Temperature
Supplier Device Package
Tape & Reel
Tolerance
Voltage
Zener Impedance (Zzk) (Max @ 0.25 mA)

MMBZ5249B Description

Short technical summary and product information.

The MMBZ5249B is a 19V Zener diode designed for voltage regulation and protection applications. It features a nominal zener voltage of 19V with a tolerance of ±5%, ensuring precise voltage clamping. The diode can dissipate up to 350mW of power, making it suitable for low-power circuits. It has a maximum forward voltage of 900mV at 10mA and a reverse leakage current of 100nA at 14V. The device is offered in a compact SOT-23-3 surface-mount package, which is ideal for space-constrained designs. The operating temperature range spans from -55°C to 150°C, allowing use in harsh environments. Typical applications include voltage regulation, overvoltage protection, and reference voltage generation in consumer, industrial, and automotive electronics.

MMBZ5249B Quick Information

Product Type: Zener Diode
Series: MMBZ52xxB
Canonical Name: MMBZ5249B Zener Diode 19V 350mW SOT-23-3
Subcategory: Single Zener Diode

MMBZ5249B Compliance

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

MMBZ5249B Estimated Pricing

Qty Low High
36,000+ $0.04 $0.04

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

MMBZ5249B Features

  • Nominal zener voltage of 19V.
  • ±5% tolerance for precise regulation.
  • 350mW maximum power dissipation.
  • Surface-mount SOT-23-3 package.
  • Operating temperature range -55°C to 150°C.

MMBZ5249B Applications

  • Voltage regulation in low-power circuits.
  • Overvoltage protection for sensitive components.
  • Reference voltage generation in analog circuits.
  • Used in consumer and industrial electronics.

MMBZ5249B FAQs

7 frequently asked questions generated from this part’s specifications.
What is the zener voltage of MMBZ5249B?

19V nominal.

What is the power dissipation rating?

350mW maximum.

What is the tolerance of the zener voltage?

±5%.

What is the forward voltage at 10mA?

900mV maximum.

What is the reverse leakage current at 14V?

100nA maximum.

What package is the MMBZ5249B available in?

SOT-23-3 (also TO-236-3, SC-59).

What is the operating temperature range?

-55°C to 150°C.

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