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1N5261B 1N5261B is a 500 mW Zener diode from Microchip Technology in a DO-35 axial-leaded package. It features ±5% tolerance and operates over -65°C to 175°C.
Mfr Part #:

1N5261B

Available from 2 distributors
Mfr Name: Microchip Technology
Microchip Technology
1N5261B is a 500 mW Zener diode from Microchip Technology in a DO-35 axial-leaded package. It features ±5% tolerance and operates over -65°C to 175°C.
Total Stock: 30,100 pcs

1N5261B Available from 2 distributors

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
30,000 pcs
30000 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
100 pcs
100 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request

1N5261B Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
ESD Sensitivity
Forward Voltage (Vf) @ 200mA
Impedance (Max) (Zzt)
Lead Style
Military Grade
Mounting Type
Operating Temperature
Package / Case
Power
Radiation Hardness
Reverse Leakage Current
Solder Temperature
Supplier Device Package
Tape & Reel
Termination Style
Thermal Resistance, Junction to Lead
Tolerance
Voltage

1N5261B Description

Short technical summary and product information.

The 1N5261B is a 500 mW Zener voltage regulator diode from Microchip Technology, part of the 1N5221-1N5281B series. It provides voltage regulation with ±5% tolerance and is housed in a DO-35 (DO-204AH) axial-leaded glass package.

 

Key specifications include a maximum impedance of 105 Ω, forward voltage of 1.5 V at 200 mA, and reverse leakage current of 100 nA at 36 V. The device is rated for power dissipation of 500 mW and can operate over a junction temperature range of -65°C to 175°C.

 

The through-hole mounting style with axial leads allows for flexible installation. The DO-35 package is suitable for various PCB layouts. The device is nonsensitive to ESD per MIL-STD-750 and is inherently radiation hard.

 

RoHS compliant devices are available with the e3 suffix; this part number does not include the e3 suffix. The device has an MSL rating of 1 (unlimited) and is REACH unaffected.

1N5261B Quick Information

Product Type: Zener Diode
Series: 1N5221-1N5281B
Canonical Name: 1N5261B Zener Diode, 500 mW, DO-35
Subcategory: Single Zener Diodes

1N5261B Compliance

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

1N5261B Features

  • 500 mW power dissipation rating.
  • ±5% Zener voltage tolerance.
  • DO-35 axial-leaded through-hole package.
  • Operating temperature range -65°C to 175°C.
  • Nonsensitive to electrostatic discharge.

1N5261B Applications

  • Voltage regulation in low-power circuits.
  • Overvoltage protection applications.
  • Reference voltage in power supplies.

1N5261B FAQs

7 frequently asked questions generated from this part’s specifications.
What is the forward voltage of the 1N5261B?

1.5 V at 200 mA.

What package is the 1N5261B available in?

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

What is the power dissipation rating of the 1N5261B?

500 mW.

What is the tolerance of the 1N5261B Zener diode?

±5%.

What is the operating temperature range of the 1N5261B?

-65°C to 175°C (junction).

What is the reverse leakage current of the 1N5261B?

100 nA at 36 V.

Is the 1N5261B sensitive to electrostatic discharge?

No, it is nonsensitive per MIL-STD-750 Method 1020.

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