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1N5248B Zener diode with 18V nominal voltage, 500mW power dissipation, in a DO-35 through-hole package. ±5% tolerance and 21Ω impedance.
Mfr Part #:

1N5248B

Available from 3 distributors
Mfr Name: On Semiconductor
On Semiconductor
Zener diode with 18V nominal voltage, 500mW power dissipation, in a DO-35 through-hole package. ±5% tolerance and 21Ω impedance.
Total Stock: 35,661 pcs

1N5248B Available from 3 distributors

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34,660 pcs
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1,000 pcs
1000 pcs On Request 1 On Request On Request On Request On Request On Request
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1N5248B Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Forward Voltage (Vf)
Impedance (Max) (Zzt)
Lead Style
Mounting Type
Operating Temperature
Operating Temperature Range
Package / Case
Power
Power Derating
Power Dissipation
Reverse Leakage Current (IR)
Storage Temperature
Storage Temperature Range
Supplier Device Package
Tape & Reel
Temperature Coefficient (TC)
Termination Style
Test Current (Iz)
Tolerance
Voltage
Zener Impedance (Zzk)
Zener Impedance (Zzt)
Zener Voltage (Vz)
Zener Voltage Tolerance

1N5248B Description

Short technical summary and product information.

The 1N5248B is a Zener diode from On Semiconductor with a nominal Zener voltage of 18V (typical, range 17.1V to 18.9V) and ±5% tolerance. It offers a power dissipation of 500mW with a derating of 4mW/°C above 50°C. The Zener impedance is 21Ω at the 7mA test current and 600Ω at 0.25mA. The reverse leakage current is 100nA at 14V reverse voltage.

 

The device is housed in a DO-35 (DO-204AH) axial lead through-hole package and supports an operating junction temperature range of -65°C to 200°C. The temperature coefficient is 0.085%/°C. Forward voltage is 1.2V at 200mA forward current.

 

The 1N5248B is marked as RoHS3 compliant and REACH unaffected, though these compliance statuses are unverified. The part is suitable for voltage regulation, overvoltage protection, and reference voltage applications in low-power circuits.

1N5248B Quick Information

Product Type: Zener Diode
Series: 1N5221B-1N5252B
Canonical Name: 1N5248B Zener Diode, 18V, 500mW, DO-35
Subcategory: Single Zener Diode

1N5248B Compliance

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

1N5248B Features

  • 18V nominal Zener voltage with ±5% tolerance.
  • 500mW power dissipation capability.
  • DO-35 through-hole axial package.
  • 21Ω impedance at 7mA test current.
  • Operating temperature range -65°C to 200°C.

1N5248B Applications

  • Voltage regulation in low-power circuits.
  • Overvoltage protection and clamping.
  • Reference voltage in bias networks.
  • Used in consumer and industrial electronics.

1N5248B FAQs

7 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of the 1N5248B?

18V typical, with a range of 17.1V to 18.9V.

What is the power dissipation rating?

500mW, with derating of 4mW/°C above 50°C.

What is the package type?

DO-35 (DO-204AH) axial lead through-hole package.

What is the forward voltage?

1.2V at 200mA forward current.

What is the operating temperature range?

-65°C to 200°C.

What is the Zener impedance?

21Ω at 7mA test current, 600Ω at 0.25mA.

Is the 1N5248B RoHS compliant?

RoHS3 Compliant (unverified).

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