1N5242B-T Zener diode with nominal 12V breakdown voltage and 500mW power dissipation. Packaged in a DO-35 through-hole case with axial leads.
Mfr Part #:

1N5242B-T

Available from 1 distributors
Mfr Name: Diodes Incorporated
Diodes Incorporated
Zener diode with nominal 12V breakdown voltage and 500mW power dissipation. Packaged in a DO-35 through-hole case with axial leads.
Total Stock: 4,400 pcs
$ Price Range: $0.03 - $0.04

1N5242B-T Available from 1 distributor

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Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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4,400 pcs
4400 pcs On Request 1 On Request On Request On Request On Request 2026-04-28 22:15:18

1N5242B-T Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Forward Voltage
Halogen Free
Impedance (Max) (Zzt)
Lead Style
Mounting Type
Operating Temperature
Polarity
Power
SVHC Present
Shipping Package Qty
Storage Temperature
Supplier Device Package
Tape & Reel
Terminals Finish
Thermal Resistance Junction-to-Ambient
Tolerance
Voltage

1N5242B-T Description

Short technical summary and product information.

The 1N5242B-T is a 12V Zener diode from Diodes Incorporated, part of the 1N5221B-1N5267B series. It features a nominal Zener voltage of 12V with ±5% tolerance, and a maximum power dissipation of 500mW at lead temperature ≤75°C. The diode offers a maximum impedance of 30Ω at 20mA test current and a reverse leakage current of 1µA at 9.1V. It is designed for voltage regulation and protection applications. The device is housed in a DO-35 glass package with axial leads and a cathode band for polarity identification. It is RoHS compliant and has a moisture sensitivity level of 1. The operating temperature range is -65°C to 200°C with a thermal resistance of 300°C/W junction-to-ambient.

1N5242B-T Quick Information

Product Type: Zener Diode
Series: 1N5221B-1N5267B
Canonical Name: Zener Diode 12V 500mW DO-35
Subcategory: Single Zener Diode

1N5242B-T Compliance

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

1N5242B-T Estimated Pricing

Qty Low High
10,000+ $0.04 $0.04
20,000+ $0.03 $0.03
30,000+ $0.03 $0.03
50,000+ $0.03 $0.03
70,000+ $0.03 $0.03
100,000+ $0.03 $0.03
250,000+ $0.03 $0.03

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

1N5242B-T Features

  • 12V nominal Zener voltage with ±5% tolerance.
  • 500mW power dissipation at 75°C lead temperature.
  • DO-35 glass through-hole package.
  • RoHS compliant and lead-free finish.
  • Operating temperature range -65°C to 200°C.

1N5242B-T Applications

  • Voltage regulation in low-power circuits.
  • Overvoltage protection for sensitive components.
  • Reference voltage generation in analog circuits.
  • Clamping and limiting applications.

1N5242B-T FAQs

7 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of the 1N5242B-T?

The nominal Zener voltage is 12V, with a minimum of 11.4V and maximum of 12.6V at 20mA test current.

What is the power dissipation rating?

Maximum power dissipation is 500mW at lead temperature ≤75°C with lead length 9.5mm.

What is the forward voltage?

Maximum forward voltage is 1.1V at 200mA forward current.

What is the reverse leakage current?

Maximum reverse leakage current is 1µA at 9.1V reverse voltage.

What is the operating temperature range?

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

What package is the 1N5242B-T available in?

It is available in a DO-35 (DO-204AH) through-hole axial lead package.

Is the 1N5242B-T RoHS compliant?

Yes, it is RoHS3 compliant with a lead-free finish (Sn96.5Ag3.5).

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