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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

onsemi 1N962B_T50R

Name: 1N962B_T50R
Brand: onsemi
SKU: 1N962B_T50R
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N962B_T50R

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: DO-204AH, DO-35, Axial

Datasheet:: 1N962B_T50R.pdf

Description:: DIODE ZENER 11V 500MW DO35

Quantity:: RFQ Add To RFQ list

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Inventory:3,398

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Product details

Overview

1N962B_T50R from Fairchild Semiconductor is a 5% tolerance, 11 V nominal Zener diode in DO-35 glass package, rated for 500 mW power dissipation at ≤75°C with 28 Ω dynamic impedance at 11.5 mA test current, used for precision voltage regulation and reference in low-power analog circuits.

For engineers reviewing the 1N962B_T50R datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance (±5%), thermal derating (4.0 mW/°C above 75°C), cathode identification via color band, junction temperature range (–65°C to +200°C), and compliance with legacy industrial voltage-reference designs.

Technical Context

The 1N962B_T50R operates as a two-terminal silicon Zener diode optimized for stable reverse-breakdown voltage regulation under DC bias. Its 11 V nominal zener voltage is specified at I_Z = 11.5 mA with 28 Ω dynamic impedance (Z_Z) and 0.25 μA maximum reverse leakage (I_R) at 8.4 V.

Designed for through-hole mounting in DO-35 glass axial package, it features a cathode-indicating color band and supports operation across –65°C to +200°C junction temperature range, with power derating linearly from 500 mW at 75°C to zero at 200°C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_Z Nominal	11 V - precise reverse breakdown voltage at 11.5 mA, enabling stable reference in analog feedback loops
Tolerance	±5% - ensures predictable voltage clamping within ±0.55 V across production lots
Z_Z @ I_Z	28 Ω - low dynamic impedance maintains regulation accuracy under varying load currents
P_D @ T_L ≤ 75°C	500 mW - maximum continuous power handling with 3/8″ lead length, defining safe operating area
I_R @ V_R = 8.4 V	0.25 μA - minimal leakage preserves low-current circuit integrity in battery-powered systems
T_J/T_STG	–65°C to +200°C - wide thermal range supports automotive under-hood and industrial control environments
Derating Slope	4.0 mW/°C above 75°C - enables accurate thermal margining in PCB-level power calculations

Pinout & Package

DO-35 glass axial package with cathode identified by a single color band on the body; leads are unmarked anode/cathode terminals suitable for manual or wave soldering.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal	Connected to lower potential side in reverse-bias regulation configuration
Cathode	Zener breakdown terminal	Marked with color band; connected to higher potential side to enable controlled reverse conduction

Key Features

Feature	Design Value
Stable Zener Voltage	11 V ±5% at 11.5 mA ensures repeatable reference performance across temperature and life
Low Dynamic Impedance	28 Ω minimizes output voltage variation under load transients in feedback networks
High-Temperature Operation	Rated to +200°C junction enables use in engine control units and power supply monitoring
Low Reverse Leakage	0.25 μA at 8.4 V preserves signal integrity in high-impedance bias networks
Standard DO-35 Footprint	Enables drop-in replacement in legacy designs using MIL-PRF-19500/105-compliant layouts

Applications

Power Supply Voltage Reference	Overvoltage Protection Clamp
Use Scenario: Providing stable 11 V reference for op-amp-based error amplifiers in linear regulators. IC Role / Device Role / Timing Role: Zener diode acting as precision shunt voltage reference in feedback divider network. Use Value: ±5% tolerance and 28 Ω Z_Z ensure <±1% output regulation drift over line/load variations.	Use Scenario: Clamping transient surges on 12 V automotive sensor lines during load dump events. IC Role / Device Role / Timing Role: Two-terminal shunt protector limiting voltage to 11.55 V max (V_Z max) before breakdown. Use Value: 500 mW rating sustains 100 ms surge without degradation when paired with series current-limiting resistor.
Signal Level Shifting	Calibration Reference Source
Use Scenario: Biasing phototransistor outputs to fixed 11 V level in isolated analog sensing circuits. IC Role / Device Role / Timing Role: Passive DC level translator establishing known offset in optocoupled signal paths. Use Value: Low 0.25 μA leakage avoids loading high-impedance sensor nodes while maintaining accuracy.	Use Scenario: Serving as traceable voltage standard in handheld multimeter calibration fixtures. IC Role / Device Role / Timing Role: Primary reference element in portable metrology equipment requiring stable 11 V source. Use Value: –65°C to +200°C operating range allows calibration across environmental stress chambers.

Power Supply Voltage Reference

Overvoltage Protection Clamp

Use Scenario: Providing stable 11 V reference for op-amp-based error amplifiers in linear regulators.

IC Role / Device Role / Timing Role: Zener diode acting as precision shunt voltage reference in feedback divider network.

Use Value: ±5% tolerance and 28 Ω Z_Z ensure <±1% output regulation drift over line/load variations.

Use Scenario: Clamping transient surges on 12 V automotive sensor lines during load dump events.

IC Role / Device Role / Timing Role: Two-terminal shunt protector limiting voltage to 11.55 V max (V_Z max) before breakdown.

Use Value: 500 mW rating sustains 100 ms surge without degradation when paired with series current-limiting resistor.

Signal Level Shifting

Calibration Reference Source

Use Scenario: Biasing phototransistor outputs to fixed 11 V level in isolated analog sensing circuits.

IC Role / Device Role / Timing Role: Passive DC level translator establishing known offset in optocoupled signal paths.

Use Value: Low 0.25 μA leakage avoids loading high-impedance sensor nodes while maintaining accuracy.

Use Scenario: Serving as traceable voltage standard in handheld multimeter calibration fixtures.

IC Role / Device Role / Timing Role: Primary reference element in portable metrology equipment requiring stable 11 V source.

Use Value: –65°C to +200°C operating range allows calibration across environmental stress chambers.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4740A	10 V nominal, ±5%, 20 Ω Z_Z, DO-41 package, 1 W rating	Higher power rating but larger footprint; requires layout change	Select when >500 mW dissipation or DO-41 compatibility is required
BZX55C11	11 V nominal, ±5%, 30 Ω Z_Z, DO-35 package, 500 mW rating	Same voltage and package; slightly higher Z_Z and different manufacturer qualification	Preferred for new designs requiring RoHS-compliant sourcing and extended lifecycle support

Compared with 1N962B_T50R, the 1N4740A offers higher power handling but demands PCB rework, while the BZX55C11 matches voltage and package with minor impedance trade-off and modern compliance-making it the closest functional alternative without layout impact.

Availability

1N962B_T50R is available at Aetrix Electronics and suitable for power supply voltage reference, overvoltage protection clamp, and calibration reference source applications requiring stable component supply and long-term obsolescence management.

Supply support for 1N962B_T50R includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Fairchild Semiconductor was a U.S.-based semiconductor company specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016.

The 1N957B–1N979B series was developed as a legacy family of general-purpose Zener diodes targeting industrial instrumentation, power supply regulation, and voltage-clamping applications with MIL-PRF-19500 qualification heritage.

FAQ

What is the nominal zener voltage and tolerance of the 1N962B_T50R?

The 1N962B_T50R has a nominal zener voltage of 11 V with a tolerance of ±5%, meaning the actual breakdown voltage falls between 10.45 V and 11.55 V when measured at 11.5 mA test current and 25°C ambient. This specification is confirmed in the Fairchild 1N957B–1N979B datasheet Rev. F1, Table "Electrical Characteristics" for device 1N962B.

What is the maximum power dissipation and thermal derating behavior of the 1N962B_T50R?

The 1N962B_T50R is rated for 500 mW power dissipation at lead temperature ≤75°C with 3/8″ lead length. Above 75°C, it derates linearly at 4.0 mW/°C until reaching zero dissipation at +200°C. This derating curve is defined in the Absolute Maximum Ratings table of the official Fairchild datasheet.

What package type and marking does the 1N962B_T50R use?

The 1N962B_T50R uses a DO-35 glass axial package with cathode indicated by a single color band. Top marking consists of three lines: Fairchild logo (F), "62" (4th–5th characters of part number), and "B" (6th–7th characters), per Fairchild's top mark specification in the same datasheet.

What is the zener impedance and reverse leakage current of the 1N962B_T50R?

The 1N962B_T50R exhibits 28 Ω dynamic impedance (Z_Z) at 11.5 mA test current and 0.25 μA maximum reverse leakage current (I_R) at 8.4 V reverse voltage. These values are explicitly listed in the Electrical Characteristics table for 1N962B in the Fairchild 1N957B–1N979B Rev. F1 datasheet.

Is the 1N962B_T50R suitable for automotive under-hood applications?

Yes, the 1N962B_T50R supports junction temperatures from –65°C to +200°C and is qualified for industrial environments. While not AEC-Q200 certified, its thermal rating and robust DO-35 glass construction make it suitable for non-safety-critical under-hood functions such as sensor biasing and voltage monitoring where full automotive qualification is not mandated.

1N962B_T50R Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: DO-204AH, DO-35, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Voltage - Zener (Nom) (Vz):: 11 V

Tolerance:: ±5%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 9.5 Ohms

Current - Reverse Leakage @ Vr:: 5 µA @ 8.4 V

Voltage - Forward (Vf) (Max) @ If:: -

Operating Temperature:: -65°C ~ 200°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-35

1N962B_T50R FAQ

1.How can I place an order for 1N962B_T50R through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N962B_T50R on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 1N962B_T50R reliable?

The price and inventory of 1N962B_T50R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N962B_T50R is usually 5 days.

3.What payment methods are accepted for 1N962B_T50R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N962B_T50R transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N962B_T50R?

1N962B_T50R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N962B_T50R order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 1N962B_T50R?

For technical support, including 1N962B_T50R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N962B_T50R requirements.

6.How does Aetrix verify that 1N962B_T50R is sourced from the original manufacturer or authorized distributors?

All 1N962B_T50R products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1N962B_T50R meets industry standards.

7.What is the process for return or replacement of 1N962B_T50R?

All 1N962B_T50R units undergo pre-shipment inspection (PSI). If there is an issue with 1N962B_T50R, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 1N962B_T50R part is unused and in its original packaging.

Return procedure for 1N962B_T50R:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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