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SZMMSZ5242BT3G Zener diode with nominal 12V breakdown voltage, 500mW power dissipation, ±5% tolerance, in SOD-123 surface mount package.
Mfr Part #:

SZMMSZ5242BT3G

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
Zener diode with nominal 12V breakdown voltage, 500mW power dissipation, ±5% tolerance, in SOD-123 surface mount package.
✓ Total Stock: 40,000 pcs
$ Price Range: $0.05 - $0.29

SZMMSZ5242BT3G Available from 1 distributor

✓ Authorised
✓ Non-Authorised
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Flip Electronics ✓
Non-Authorised Inventory information
40,000 pcs
On Request
40000 pcs On Request 1 On Request On Request On Request On Request On Request
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SZMMSZ5242BT3G 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
Supplier Device Package
Tape & Reel
Tolerance
Voltage
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SZMMSZ5242BT3G Description

Short technical summary and product information.

The SZMMSZ5242BT3G is a Zener voltage regulator diode from On Semiconductor, part of the MMSZ52xxxT1G series. It offers a nominal Zener voltage of 12V with a tolerance of ±5%, and a maximum power dissipation of 500mW on FR-4 or FR-5 boards. The device features a maximum impedance of 30Ω, reverse leakage current of 1µA at 9.1V, and a forward voltage of 900mV at 10mA.

 

Designed for general-purpose medium-current applications, this diode is housed in a compact SOD-123 surface mount package optimized for automated assembly. It operates over a junction temperature range of -55°C to 150°C and has a thermal resistance of 340°C/W junction-to-ambient and 150°C/W junction-to-lead. The device is rated for ESD protection exceeding 16kV (Human Body Model, Class 3) and meets UL 94 V-0 flammability requirements.

 

The SZ prefix indicates automotive qualification (AEC-Q101) and PPAP capability, making it suitable for applications requiring stringent change control. The package is Pb-Free and the device is RoHS compliant (low confidence, unverified).

SZMMSZ5242BT3G Quick Information

Product Type: Zener Diode
Series: SZMMSZ52xxxT1G Series
Canonical Name: On Semiconductor SZMMSZ5242BT3G Zener Diode, 12V, 500mW, SOD-123
Subcategory: Single Zener Diode

SZMMSZ5242BT3G Compliance

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

SZMMSZ5242BT3G Estimated Pricing

Qty Low High
1+ $0.29 $0.29
10+ $0.18 $0.18
100+ $0.12 $0.12
500+ $0.09 $0.09
1,000+ $0.08 $0.08
2,500+ $0.07 $0.07
5,000+ $0.06 $0.06
10,000+ $0.05 $0.05

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

SZMMSZ5242BT3G Features

  • 12V nominal Zener voltage with ±5% tolerance.
  • 500mW power dissipation on FR-4/5 board.
  • SOD-123 surface mount package for automated assembly.
  • ESD rating Class 3 (>16kV) per Human Body Model.
  • UL 94 V-0 flammability rating.

SZMMSZ5242BT3G Applications

  • Voltage regulation in low-power circuits.
  • Overvoltage protection in automotive electronics.
  • General purpose clamping and reference applications.
  • Ideal for space-constrained PCB designs.

SZMMSZ5242BT3G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of SZMMSZ5242BT3G?

The nominal Zener voltage is 12V with a tolerance of ±5%.

What is the power dissipation rating?

The maximum power dissipation is 500mW on FR-4 or FR-5 board.

What is the package type and mounting method?

The device is packaged in SOD-123 and is surface mount.

What is the operating temperature range?

The junction and storage temperature range is -55°C to +150°C.

What is the ESD rating?

ESD rating is Class 3 (>16kV) per Human Body Model.

What is the forward voltage?

The maximum forward voltage is 900mV at 10mA.

Is the device Pb-Free?

Yes, the datasheet states it is Pb-Free.

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