1SMB5955BT3G 1SMB5955BT3G is a 180V, 3W Zener diode from On Semiconductor in a surface mount DO-214AA (SMB) package. It features ±5% tolerance and is Pb-Free with UL 94 V-0 flammability rating.
Mfr Part #:

1SMB5955BT3G

Available from 3 distributors
Mfr Name: On Semiconductor
On Semiconductor
1SMB5955BT3G is a 180V, 3W Zener diode from On Semiconductor in a surface mount DO-214AA (SMB) package. It features ±5% tolerance and is Pb-Free with UL 94 V-0 flammability rating.
Total Stock: 2,134 pcs

1SMB5955BT3G Available from 3 distributors

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1SMB5955BT3G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
AEC-Q101 Qualified
Automotive Grade
Current
ESD Rating
Flammability
Flammability Rating
Forward Voltage
Halogen Free
Impedance (Max) (Zzt)
Lead Free Status
Lead Temperature for Soldering
Maximum Junction Temperature
Mounting Type
Operating Temperature
Package / Case
Package Type
Power
Power Dissipation
Reverse Leakage Current
SVHC Present
Standard Package Quantity
Storage Temperature
Storage Temperature Range
Supplier Device Package
Tape & Reel
Tape and Reel
Termination Style
Thermal Resistance Junction-to-Ambient
Thermal Resistance, Junction to Lead
Tolerance
Voltage
Zener Impedance
Zener Voltage

1SMB5955BT3G Description

Short technical summary and product information.

The 1SMB5955BT3G is a 180V Zener voltage regulator diode from On Semiconductor's 1SMB59xxBT3G series. It is rated for 3W maximum steady state power dissipation at a lead temperature of 75°C, with a derating factor of 40 mW/°C above 75°C. The device offers a zener impedance of 900 Ω and a maximum reverse leakage current of 1 µA at 136.8V.

 

This diode is housed in a void-free, transfer-molded plastic DO-214AA (SMB) package with modified L-bend leads for enhanced solder joint reliability. It is designed for surface mount assembly and supports a maximum junction temperature of 150°C. The part is Pb-Free and meets UL 94 V-0 flammability requirements.

 

Typical applications include voltage regulation, overvoltage protection, and reference voltage generation in power supplies and industrial electronics. The device is also available in an automotive-qualified variant (SZ1SMB5955BT3G) for applications requiring AEC-Q101 compliance.

1SMB5955BT3G Quick Information

Product Type: Zener Diode
Series: 1SMB59xxBT3G
Canonical Name: 1SMB5955BT3G Zener Diode 180V 3W ±5% Surface Mount DO-214AA (SMB)
Subcategory: Single Zener Diode

1SMB5955BT3G Compliance

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

1SMB5955BT3G Features

  • 180V Zener voltage with ±5% tolerance.
  • 3W maximum steady state power dissipation.
  • Surface mount DO-214AA (SMB) package.
  • Pb-Free and UL 94 V-0 compliant.
  • ESD rating Class 3 (>16 kV) HBM.

1SMB5955BT3G Applications

  • Voltage regulation in power supply circuits.
  • Overvoltage protection for sensitive electronics.
  • Reference voltage generation in industrial systems.

1SMB5955BT3G FAQs

5 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of 1SMB5955BT3G?

The Zener voltage is 180V with a tolerance of ±5%.

What is the power dissipation rating of this diode?

Maximum steady state power dissipation is 3W at a lead temperature of 75°C.

What package does the 1SMB5955BT3G come in?

It comes in a surface mount DO-214AA (SMB) package.

What is the operating temperature range?

Operating temperature range is -65°C to +150°C.

Is the 1SMB5955BT3G RoHS compliant?

The datasheet states the device is Pb-Free, but RoHS compliance is unverified.

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