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SZMMSZ5249BT1G 19V Zener diode with 500mW power dissipation, ±5% tolerance, in surface mount SOD-123 package.
Mfr Part #:

SZMMSZ5249BT1G

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
19V Zener diode with 500mW power dissipation, ±5% tolerance, in surface mount SOD-123 package.
✓ Total Stock: 14,910 pcs
$ Price Range: $0.06 - $0.29

SZMMSZ5249BT1G Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Flip Electronics ✓
Non-Authorised Inventory information
14,910 pcs
On Request
14910 pcs On Request 1 On Request On Request On Request On Request On Request
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SZMMSZ5249BT1G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Current
Impedance (Max) (Zzt)
Mounting Type
Operating Temperature
Power
Storage Temperature
Supplier Device Package
Tape & Reel
Tolerance
Voltage
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SZMMSZ5249BT1G Description

Short technical summary and product information.

The SZMMSZ5249BT1G is a 19V Zener diode from On Semiconductor, part of the SZMMSZ52xxxT1G series. It offers a nominal Zener voltage of 19V with a tolerance of ±5%, and a maximum power dissipation of 500mW when mounted on FR-4 or FR-5 board. The device features a low impedance of 23Ω and a reverse leakage current of 100nA at 14V. The forward voltage drop is 900mV at 10mA.

 

This Zener diode is housed in a surface mount SOD-123 package, designed for automated assembly and high-density applications. It has an operating temperature range of -55°C to 150°C, with thermal resistance junction-to-ambient of 340°C/W and junction-to-lead of 150°C/W. The device is ESD rated Class 3 (>16kV) per Human Body Model, providing robust protection.

 

The SZMMSZ5249BT1G is Pb-Free and has a flammability rating of UL 94 V-0. It is AEC-Q101 qualified, making it suitable for automotive applications. The standard packaging is Tape & Reel with 3000 units per reel.

SZMMSZ5249BT1G Quick Information

Product Type: Zener Diode
Series: SZMMSZ52xxxT1G
Canonical Name: Zener Diode 19V 500mW ±5% SOD-123
Subcategory: Single Zener Diode

SZMMSZ5249BT1G Compliance

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

SZMMSZ5249BT1G Estimated Pricing

Qty Low High
1+ $0.29 $0.29
10+ $0.18 $0.18
100+ $0.11 $0.11
500+ $0.08 $0.08
1,000+ $0.07 $0.07
3,000+ $0.06 $0.06

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

SZMMSZ5249BT1G Features

  • 19V nominal Zener voltage with ±5% tolerance.
  • 500mW power dissipation on FR-4 board.
  • Surface mount SOD-123 package for automated assembly.
  • ESD rating Class 3 >16kV per HBM.
  • AEC-Q101 qualified for automotive applications.

SZMMSZ5249BT1G Applications

  • Used in voltage regulation and clamping circuits.
  • Ideal for automotive electronics and power management.
  • Suitable for high-density PCB designs.
  • General purpose medium current Zener applications.

SZMMSZ5249BT1G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the nominal Zener voltage of SZMMSZ5249BT1G?

The nominal Zener voltage is 19V.

What is the forward voltage drop at 10mA?

The maximum forward voltage is 900mV at 10mA.

What package type is SZMMSZ5249BT1G available in?

It is available in a surface mount SOD-123 package.

What is the maximum power dissipation of this Zener diode?

The maximum power dissipation is 500mW.

What is the tolerance on the Zener voltage?

The tolerance is ±5%.

Does this Zener diode have ESD protection?

Yes, it has an ESD rating of Class 3 (>16 kV) per Human Body Model.

What is the operating temperature range?

The operating temperature range is -55°C to 150°C.

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