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SZ1SMB5931BT3G Surface mount Zener voltage regulator diode rated at 18V with 3W power dissipation. Features ±5% tolerance, AEC-Q101 qualification, and ESD rating Class 3.
Mfr Part #:

SZ1SMB5931BT3G

Available from 5 distributors
Mfr Name: On Semiconductor
On Semiconductor
Surface mount Zener voltage regulator diode rated at 18V with 3W power dissipation. Features ±5% tolerance, AEC-Q101 qualification, and ESD rating Class 3.
Total Stock: 8,544 pcs
$ Price Range: $0.25 - $1.14

SZ1SMB5931BT3G Available from 5 distributors

Authorised
Non-Authorised

SZ1SMB5931BT3G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
AEC-Q101 Qualified
Automotive Grade
Case Material
Current
ESD Rating
Flammability Rating
Halogen Free
Impedance (Max) (Zzt)
Lead Finish
Lead Style
Maximum Soldering Temperature
Mounting Type
Operating Temperature
Power
Power Dissipation (Maximum) @ TA=25°C
Standard Package Quantity
Storage Temperature
Supplier Device Package
Supplier Package
Tape & Reel
Termination Style
Thermal Resistance Junction-to-Ambient
Thermal Resistance, Junction to Lead
Tolerance
Voltage

SZ1SMB5931BT3G Description

Short technical summary and product information.

The SZ1SMB5931BT3G from On Semiconductor is a surface mount Zener voltage regulator diode designed for general purpose voltage regulation and protection. This diode offers a nominal Zener voltage of 18V with a tolerance of ±5%. It is capable of dissipating up to 3W of power when measured at a lead temperature of 75°C, and 550mW at an ambient temperature of 25°C. The device features a low reverse leakage current of 1µA maximum at 13.7V and a forward voltage of 1.5V maximum at 200mA. The Zener impedance is 12Ω maximum at the test current. Packaged in a DO-214AA (SMB) surface mount package, the diode is suitable for automated assembly. It is AEC-Q101 qualified for automotive applications and has an ESD rating of Class 3 (>16 kV) per the Human Body Model. The operating temperature range spans -65°C to 150°C. The device is lead-free (Pb-Free) and meets UL 94 V-0 flammability rating. Typical applications include voltage regulation, overvoltage clamping, and protection circuits in automotive, industrial, and consumer electronics.

SZ1SMB5931BT3G Quick Information

Product Type: Zener Diode
Series: SZ1SMB59xxT3G
Canonical Name: Zener Voltage Regulator Diode, 18V, 3W, Surface Mount, DO-214AA (SMB)
Subcategory: Single Zener Diode

SZ1SMB5931BT3G Compliance

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

SZ1SMB5931BT3G Estimated Pricing

Qty Low High
1+ $1.14 $1.14
10+ $0.71 $0.71
100+ $0.47 $0.47
500+ $0.36 $0.36
1,000+ $0.33 $0.33
2,500+ $0.27 $0.27
5,000+ $0.25 $0.25

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

SZ1SMB5931BT3G Features

  • Rated for 18V Zener voltage regulation.
  • Supports 3W power dissipation maximum.
  • AEC-Q101 qualified for automotive applications.
  • Surface mount in DO-214AA (SMB) package.
  • ESD rated Class 3 (>16 kV) HBM.

SZ1SMB5931BT3G Applications

  • Used in voltage regulation circuits.
  • Ideal for automotive electronics.
  • Suitable for overvoltage protection.
  • Works in power supply clamping.
  • Designed for surface mount assembly.

SZ1SMB5931BT3G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of the SZ1SMB5931BT3G?

The nominal Zener voltage is 18V with a tolerance of ±5%.

What is the power dissipation rating?

Maximum power dissipation is 3W at lead temperature 75°C, and 550mW at ambient temperature 25°C.

What is the forward voltage?

Maximum forward voltage is 1.5V at a forward current of 200mA.

What package type is the SZ1SMB5931BT3G?

The diode is packaged in DO-214AA (SMB) surface mount package.

Is the SZ1SMB5931BT3G AEC-Q101 qualified?

Yes, it is AEC-Q101 qualified and PPAP capable for automotive applications.

What is the operating temperature range?

The operating and storage temperature range is -65°C to +150°C.

Is the SZ1SMB5931BT3G lead-free?

Yes, the device is lead-free (Pb-Free) as per the datasheet statement.

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