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

onsemi 1N6001B_T50A

Name: 1N6001B_T50A
Brand: onsemi
SKU: 1N6001B_T50A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N6001B_T50A

Manufacturer:: onsemi

Category:: Single Zener Diodes

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

Datasheet:: 1N6001B_T50A.pdf

Description:: DIODE ZENER 11V 500MW DO35

Quantity:: RFQ Add To RFQ list

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Inventory:7,346

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Product details

Overview

1N6001B_T50A from Fairchild Semiconductor is a 11 V ±5% Zener diode in DO-35 glass package, rated for 500 mW power dissipation at TL ≤ 75°C with 4.0 mW/°C derating, 18 Ω zener impedance at 5 mA test current, and 0.1 mA leakage current at 8.4 V reverse voltage - used for precision voltage regulation and reference in low-power analog circuits.

For engineers reviewing the 1N6001B_T50A datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance, thermal derating behavior, dynamic impedance at nominal test current, leakage performance at rated VR, and DO-35 mechanical compatibility in space-constrained PCB layouts.

Technical Context

This device operates as a two-terminal voltage reference diode relying on controlled reverse-biased avalanche breakdown. Its 11 V nominal zener voltage is specified at 5 mA test current with 5% tolerance, and it maintains stable regulation across -65°C to +200°C operating temperature range.

Zener impedance is 18 Ω measured at IZ = 5 mA and <600 Ω at IZK = 250 μA, indicating low dynamic resistance for tight regulation under varying load conditions; forward voltage is ≤1.2 V at IF = 200 mA, supporting basic polarity verification during functional testing.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	10.45 V (min) to 11.55 V (max) at I_Z = 5 mA - defines regulated output voltage window under nominal bias
Power Dissipation (P_D)	500 mW @ T_L ≤ 75°C - sets maximum continuous thermal load before derating applies
Zener Impedance (Z_Z)	18 Ω @ I_Z = 5 mA - determines output voltage variation under small-signal AC load changes
Leakage Current (I_R)	0.1 mA @ V_R = 8.4 V - quantifies off-state conduction affecting high-impedance bias networks
Max Zener Current (I_ZM)	45 mA - derived from P_D and V_Z, limits peak DC current for safe operation
Operating Temp Range	-65°C to +200°C - supports deployment in automotive under-hood, industrial, and aerospace environments

Pinout & Package

DO-35 glass axial package with cathode indicated by color band; two-terminal device requiring no external biasing circuitry beyond series current-limiting resistor.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / low-voltage side in reverse-bias regulation	Connected to lower potential node when used as shunt regulator; enables forward voltage check (≤1.2 V @ 200 mA)
Cathode	Zener breakdown terminal / regulated output node	Connected to regulated rail; color band identifies this terminal for correct PCB orientation and polarity-sensitive layout

Key Features

Feature	Design Value
±5% Zener voltage tolerance	Ensures predictable regulation window without post-manufacture trimming in cost-sensitive designs
Low 18 Ω dynamic impedance	Minimizes output voltage deviation under dynamic load transients in feedback references
0.1 mA leakage at 8.4 V	Preserves accuracy in high-resistance divider networks and battery-backed circuits
DO-35 glass package	Provides hermetic sealing and proven reliability for long-term stability in harsh environments

Applications

Voltage Reference for Op-Amp Circuits	Overvoltage Clamp in Sensor Interfaces
Use Scenario: Providing stable 11 V reference to instrumentation amplifier bias networks and ADC reference dividers. IC Role / Device Role: Shunt voltage reference establishing precise DC offset and gain-setting points. Use Value: Tight 5% V_Z tolerance and low 18 Ω Z_Z ensure reference drift remains below 0.2% over temperature and load variations.	Use Scenario: Protecting 12 V-rated analog front-end inputs from transient surges exceeding 12 V. IC Role / Device Role: Passive clamp limiting input voltage to ~11.55 V (V_Z max) during fault events. Use Value: Fast avalanche response and 45 mA I_ZM enable reliable energy absorption without latch-up or degradation.
Low-Power Power Supply Regulation	Microcontroller Reset Circuit Biasing
Use Scenario: Regulating auxiliary 11 V rail for low-current logic or interface ICs in battery-powered devices. IC Role / Device Role: Simple shunt regulator replacing linear regulators where efficiency and component count are critical. Use Value: 500 mW rating and -65°C to +200°C range support operation in thermally constrained enclosures with wide ambient swings.	Use Scenario: Generating clean reset threshold voltage for microcontrollers requiring 11 V-level brown-out detection. IC Role / Device Role: Precision threshold element setting activation point of external reset supervisor ICs. Use Value: 0.1 mA leakage ensures minimal current draw on weak pull-up networks, preserving battery life in sleep modes.

Voltage Reference for Op-Amp Circuits

Overvoltage Clamp in Sensor Interfaces

Use Scenario: Providing stable 11 V reference to instrumentation amplifier bias networks and ADC reference dividers.

IC Role / Device Role: Shunt voltage reference establishing precise DC offset and gain-setting points.

Use Value: Tight 5% V_Z tolerance and low 18 Ω Z_Z ensure reference drift remains below 0.2% over temperature and load variations.

Use Scenario: Protecting 12 V-rated analog front-end inputs from transient surges exceeding 12 V.

IC Role / Device Role: Passive clamp limiting input voltage to ~11.55 V (V_Z max) during fault events.

Use Value: Fast avalanche response and 45 mA I_ZM enable reliable energy absorption without latch-up or degradation.

Low-Power Power Supply Regulation

Microcontroller Reset Circuit Biasing

Use Scenario: Regulating auxiliary 11 V rail for low-current logic or interface ICs in battery-powered devices.

IC Role / Device Role: Simple shunt regulator replacing linear regulators where efficiency and component count are critical.

Use Value: 500 mW rating and -65°C to +200°C range support operation in thermally constrained enclosures with wide ambient swings.

Use Scenario: Generating clean reset threshold voltage for microcontrollers requiring 11 V-level brown-out detection.

IC Role / Device Role: Precision threshold element setting activation point of external reset supervisor ICs.

Use Value: 0.1 mA leakage ensures minimal current draw on weak pull-up networks, preserving battery life in sleep modes.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4740A (ON Semiconductor)	10 V nominal, ±5%, DO-41 package, 1000 mW rating, 20 Ω Z_Z @ 25 mA	Higher power handling but larger footprint; requires higher test current for spec compliance	Select when board space allows DO-41 and >500 mW dissipation is needed
BZX55C11 (Vishay)	11 V nominal, ±5%, DO-35 package, 500 mW rating, 20 Ω Z_Z @ 5 mA, 0.1 mA I_R @ 8.4 V	Nearly identical electrical specs; same DO-35 form factor and marking convention	Drop-in alternative with equivalent thermal and electrical behavior in legacy DO-35 designs

Compared with 1N6001B_T50A, the 1N4740A offers higher power margin but demands more PCB area and different thermal design, while the BZX55C11 matches DO-35 footprint, zener parameters, and leakage - making it suitable for direct replacement where second-source qualification is required.

Availability

1N6001B_T50A is available at Aetrix Electronics and suitable for voltage reference design, overvoltage protection circuits, and low-power supply regulation requiring stable component supply and consistent DO-35 mechanical fit.

Supply support for 1N6001B_T50A 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, signal conditioning, and discrete components before its acquisition by ON Semiconductor in 2016.

The 1N6001B_T50A belongs to Fairchild's legacy 1N5985B–1N6025B Zener diode family, engineered for general-purpose voltage regulation and reference in industrial, automotive, and consumer electronics where DO-35 reliability and ±5% tolerance meet system requirements.

FAQ

What is the exact zener voltage range for 1N6001B_T50A at 25°C?

The 1N6001B_T50A has a guaranteed zener voltage range of 10.45 V (minimum) to 11.55 V (maximum) when tested at I_Z = 5 mA and T_A = 25°C. This 5% tolerance band is measured under standardized thermal conditions with 3/8″ lead length and T_L = 30°C ± 1°C, ensuring repeatability across production lots. The 1N6001B_T50A datasheet specifies no typical value outside this min/max envelope.

Does 1N6001B_T50A support operation above 125°C junction temperature?

No - the 1N6001B_T50A is rated for junction and storage temperatures from -65°C to +200°C, but its power derating curve begins at T_L = 75°C, reducing allowable dissipation by 4.0 mW/°C above that point. At T_L = 125°C, only 300 mW remains available, and sustained operation near 200°C requires strict thermal management. The 1N6001B_T50A must be applied within its absolute maximum ratings per Fairchild Rev. C2 specification.

What is the forward voltage specification for 1N6001B_T50A?

The 1N6001B_T50A has a maximum forward voltage of 1.2 V when conducting 200 mA in the forward direction. This parameter is specified in the Absolute Maximum Ratings table and is intended for polarity verification and basic diode functionality checks - not for rectification use. The 1N6001B_T50A is optimized for reverse-bias regulation, not forward conduction duty.

Can 1N6001B_T50A be used as a direct replacement for 1N4740A?

No - although both are 10–11 V Zener diodes, the 1N6001B_T50A is rated at 500 mW in DO-35, while the 1N4740A is rated at 1000 mW in DO-41. Their packages differ in size and thermal mass, and test currents differ (5 mA vs. 25 mA), leading to non-identical dynamic impedance and thermal response. Substituting 1N6001B_T50A for 1N4740A risks underspecification in power-handling applications.

How is the cathode identified on the 1N6001B_T50A package?

The cathode of the 1N6001B_T50A is marked by a distinct color band on the DO-35 glass body, consistent with industry-standard polarity identification. Per Fairchild's top-marking specification, the device uses a three-line marking format: Fairchild logo on line 1, "00" on line 2, and "1B" on line 3 - with the cathode band positioned adjacent to the "1B" end. This physical marking ensures unambiguous orientation during manual or automated placement.

1N6001B_T50A Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Tape & Box (TB)

Product Status:: Obsolete

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

Tolerance:: ±5%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 18 Ohms

Current - Reverse Leakage @ Vr:: 100 nA @ 8.4 V

Voltage - Forward (Vf) (Max) @ If:: 1.2 V @ 200 mA

Operating Temperature:: -65°C ~ 200°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-35

1N6001B_T50A FAQ

1.How can I place an order for 1N6001B_T50A through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N6001B_T50A 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 1N6001B_T50A reliable?

The price and inventory of 1N6001B_T50A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6001B_T50A is usually 5 days.

3.What payment methods are accepted for 1N6001B_T50A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6001B_T50A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N6001B_T50A?

1N6001B_T50A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N6001B_T50A 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 1N6001B_T50A?

For technical support, including 1N6001B_T50A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6001B_T50A requirements.

6.How does Aetrix verify that 1N6001B_T50A is sourced from the original manufacturer or authorized distributors?

All 1N6001B_T50A 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 1N6001B_T50A meets industry standards.

7.What is the process for return or replacement of 1N6001B_T50A?

All 1N6001B_T50A units undergo pre-shipment inspection (PSI). If there is an issue with 1N6001B_T50A, 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 1N6001B_T50A part is unused and in its original packaging.

Return procedure for 1N6001B_T50A:

1.Submit a request within 90 days.

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

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