DistyParts Icon
SZ1SMA5931BT3G On Semiconductor SZ1SMA5931BT3G is a 1.5W surface mount Zener diode with a nominal Zener voltage of 18V and ±5% tolerance. It comes in a DO-214AC (SMA) package and is AEC-Q101 qualified for automotive applications.
Mfr Part #:

SZ1SMA5931BT3G

Available from 4 distributors
Mfr Name: On Semiconductor
On Semiconductor
On Semiconductor SZ1SMA5931BT3G is a 1.5W surface mount Zener diode with a nominal Zener voltage of 18V and ±5% tolerance. It comes in a DO-214AC (SMA) package and is AEC-Q101 qualified for automotive applications.
✓ Total Stock: 80,096 pcs
$ Price Range: $0.23 - $1.15

SZ1SMA5931BT3G Available from 4 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Smaxon Electronics ✓
Non-Authorised Inventory information
60,000 pcs
On Request
60000 pcs On Request 1 On Request On Request 21+ On Request On Request
Flip Electronics ✓
Non-Authorised Inventory information
15,000 pcs
On Request
15000 pcs On Request 1 On Request On Request On Request On Request On Request
Optech Co.,Limited ✓
Non-Authorised Inventory information
3,096 pcs
On Request
3096 pcs On Request 1 On Request On Request 21+ On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
2,000 pcs
On Request
2000 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

SZ1SMA5931BT3G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Current
Impedance (Max) (Zzt)
Lead Style
Mounting Type
Operating Temperature
Power
Supplier Device Package
Termination Style
Tolerance
Voltage
View Similar Products (0)

SZ1SMA5931BT3G Description

Short technical summary and product information.

The SZ1SMA5931BT3G from onsemi is a 1.5 Watt plastic surface mount Zener voltage regulator designed for general-purpose voltage regulation and protection. It features a nominal Zener voltage of 18V with a tolerance of ±5% and a maximum Zener impedance of 12Ω at the test current. The device offers a maximum power dissipation of 1.5W when measured at a lead temperature of 75°C (zero lead length) and 0.5W at 25°C ambient on an FR-4 board.

 

Key electrical characteristics include a maximum forward voltage of 1.2V at 200mA forward current and a reverse leakage current of 500nA at 13.7V. The device is rated for an ESD capability of Class 3 (>16 kV) per the Human Body Model, making it robust for harsh environments. The operating temperature range spans -65°C to +150°C, with a junction-to-lead thermal resistance of 50°C/W and junction-to-ambient of 250°C/W.

 

Mechanically, the SZ1SMA5931BT3G is housed in a void-free, transfer-molded DO-214AC (SMA) package with a Pb-free lead finish. It is compatible with surface mount assembly and is rated UL 94 V-0 for flammability. The SZ prefix indicates AEC-Q101 qualification and PPAP capability, suitable for automotive and other applications requiring stringent change control. This device is also ideal for replacing MELF packages in space-constrained designs.

SZ1SMA5931BT3G Quick Information

Product Type: Zener Voltage Regulator
Series: 1SMA59xxBT3G Series, SZ1SMA59xxBT3G Series
Canonical Name: On Semiconductor SZ1SMA5931BT3G Zener Diode, 18V, 1.5W, DO-214AC (SMA)
Subcategory: Single Zener Diodes

SZ1SMA5931BT3G Compliance

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

SZ1SMA5931BT3G Estimated Pricing

Qty Low High
1+ $1.15 $1.15
10+ $0.72 $0.72
100+ $0.47 $0.47
500+ $0.36 $0.36
1,000+ $0.33 $0.33
2,000+ $0.30 $0.30
5,000+ $0.25 $0.25
10,000+ $0.23 $0.23

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

SZ1SMA5931BT3G Features

  • Nominal Zener voltage of 18V with ±5% tolerance.
  • Maximum power dissipation of 1.5W at 75°C lead temperature.
  • ESD rating of Class 3 (>16 kV) per Human Body Model.
  • AEC-Q101 qualified for automotive and harsh applications.
  • Surface mount DO-214AC (SMA) package with Pb-free finish.

SZ1SMA5931BT3G Applications

  • Voltage regulation in automotive engine control modules.
  • Overvoltage protection in consumer electronics power supplies.
  • Reference voltage in industrial sensor interfaces.
  • Replacement for MELF Zener diodes in compact designs.
  • Protection circuits in telecommunications equipment.

SZ1SMA5931BT3G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of the SZ1SMA5931BT3G?

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

What is the maximum power dissipation of this Zener diode?

The maximum power dissipation is 1.5W at a lead temperature of 75°C (zero lead length) and 0.5W at an ambient temperature of 25°C on an FR-4 board.

What package does the SZ1SMA5931BT3G come in?

It comes in a DO-214AC (SMA) surface mount package.

What is the forward voltage of this diode?

The maximum forward voltage is 1.2V at a forward current of 200 mA.

Is the SZ1SMA5931BT3G qualified for automotive applications?

Yes, the SZ prefix indicates AEC-Q101 qualification and PPAP capability.

What is the ESD rating of this Zener diode?

The ESD rating is Class 3, greater than 16 kV per the Human Body Model.

What is the operating temperature range?

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

Home
Account

Categories