1N748A 1N748A is a 3.9V Zener diode from On Semiconductor with 500mW power dissipation in a DO-35 through-hole package.
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1N748A

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Mfr Name: On Semiconductor
On Semiconductor
1N748A is a 3.9V Zener diode from On Semiconductor with 500mW power dissipation in a DO-35 through-hole package.
✓ Total Stock: 50 pcs

1N748A Available from 1 distributor

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1N748A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Forward Voltage
Impedance (Max) (Zzt)
Lead Spacing
Lead Style
Mounting Type
Operating Temperature
Operating Temperature Range
Package / Case
Power
Power Dissipation
SVHC Present
Storage Temperature
Supplier Device Package
Termination Style
Tolerance
Voltage

1N748A Description

Short technical summary and product information.

The 1N748A is a 3.9V Zener diode manufactured by On Semiconductor, designed for voltage regulation and reference applications. It features a nominal Zener voltage of 3.9V at a test current of 20mA with a tolerance of ±5%. The device can dissipate up to 500mW of power at lead temperatures up to 75°C, with a derating factor of 4.0mW/°C above that.

 

Electrical characteristics include a maximum impedance of 23Ω at the test current, a maximum Zener current of 95mA, and a reverse leakage current of 10µA at 1V. The forward voltage is 1.5V maximum at 200mA. The diode operates over a junction temperature range of -65°C to 200°C.

 

The 1N748A is housed in a DO-35 glass case with axial leads, suitable for through-hole mounting. The cathode is identified by a color band. This device is part of the 1N746A-1N759A series of Zener diodes offering voltages from 2.4V to 12V.

1N748A Quick Information

Product Type: Zener Diode
Canonical Name: 1N748A Zener Diode 3.9V 500mW DO-35
Subcategory: Single Zener Diode

1N748A Compliance

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

1N748A Features

  • 3.9V nominal Zener voltage at 20mA.
  • 500mW power dissipation capability.
  • ±5% voltage tolerance.
  • DO-35 glass through-hole package.
  • Operating temperature range -65°C to 200°C.

1N748A Applications

  • Voltage regulation in low-power circuits.
  • Voltage reference for analog designs.
  • Overvoltage protection in DC lines.
  • Clamping and limiting applications.

1N748A FAQs

5 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of the 1N748A?

The nominal Zener voltage is 3.9V at a test current of 20mA.

What is the power dissipation rating of the 1N748A?

The power dissipation is 500mW at lead temperatures up to 75°C, derated at 4.0mW/°C above that.

What is the package type of the 1N748A?

The 1N748A is available in a DO-35 glass through-hole package with axial leads.

What is the forward voltage of the 1N748A?

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

What is the operating temperature range of the 1N748A?

The operating and storage temperature range is -65°C to 200°C.

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