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

onsemi 1N6014B_T50R

Name: 1N6014B_T50R
Brand: onsemi
SKU: 1N6014B_T50R
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N6014B_T50R

Manufacturer:: onsemi

Category:: Single Zener Diodes

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

Datasheet:: 1N6014B_T50R.pdf

Description:: DIODE ZENER 39V 500MW DO35

Quantity:: RFQ Add To RFQ list

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Product details

Overview

1N6014B_T50R from Fairchild Semiconductor is a 37.05 V ±5% Zener diode in DO-35 glass package, rated for 500 mW power dissipation at TL ≤ 75°C, with 130 Ω zener impedance at 5 mA test current and 0.1 mA leakage current at 30 V reverse voltage. It provides precise voltage regulation in low-power reference and protection circuits.

For engineers reviewing the 1N6014B_T50R datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, cathode identification, and direct-fit alternatives for stable voltage clamping and biasing designs.

Technical Context

The 1N6014B_T50R operates as a silicon planar Zener diode with sharp knee characteristics, optimized for stable voltage reference in DC bias networks and overvoltage protection. Its 37.05 V nominal Zener voltage is specified at 5 mA test current, with 130 Ω dynamic impedance ensuring minimal regulation error under load variation.

Thermal performance follows a 4.0 mW/°C linear derating above 75°C lead temperature, and the device supports operation across -65°C to +200°C junction and storage range. Cathode identification is marked by a single color band on the DO-35 glass case.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	37.05 V min / 40.95 V max at 5 mA - defines clamping threshold tolerance window for precision regulation
Power Dissipation (P_D)	500 mW @ T_L ≤ 75°C - sets maximum continuous steady-state power handling before thermal derating
Zener Impedance (Z_Z)	130 Ω @ I_Z = 5 mA - determines output voltage deviation under small-signal current changes
Leakage Current (I_R)	0.1 mA @ V_R = 30 V - confirms low off-state conduction for high-impedance sensing nodes
Max Zener Current (I_ZM)	130 mA - derived from P_D and V_Z, limits peak surge capability without exceeding thermal limits
Operating Temp Range	-65°C to +200°C - enables use in automotive under-hood, industrial control, and aerospace environments
Forward Voltage (V_F)	1.2 V max @ I_F = 200 mA - specifies forward conduction drop for polarity-check or dual-function applications

Pinout & Package

DO-35 glass axial package with cathode identified by a single color band. Leads are tinned copper-clad steel, 0.46 mm diameter, 25.4 mm minimum length. No internal terminals beyond anode and cathode.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry point in forward bias	Connected to lower-potential node during regulation; used for polarity verification or series forward-drop applications
Cathode	Current exit point in reverse breakdown	Marked by color band; connected to regulated voltage rail; must be held at higher potential than anode for Zener operation

Key Features

Feature	Design Value
±5% Zener voltage tolerance	Ensures predictable clamping within 1.85 V of nominal 37.05 V, reducing need for post-production trimming
Low 130 Ω dynamic impedance	Maintains regulation stability across ±1 mA load current shifts in feedback or reference paths
0.1 mA leakage at 30 V	Minimizes parasitic loading on high-impedance sensor outputs or battery-monitoring dividers
DO-35 glass package	Provides hermetic sealing and thermal stability for long-term reliability in harsh ambient conditions
200°C max junction temperature	Supports operation in sealed enclosures or near heat-generating components without derating penalties

Applications

Voltage Reference for Op-Amp Biasing	Overvoltage Clamp in Sensor Interface
Use Scenario: Provides stable 37 V reference for rail-to-rail op-amp input biasing in industrial analog front-ends. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to generate fixed reference voltage. Use Value: Delivers <1.85 V total tolerance window and low 130 Ω impedance, minimizing offset drift across temperature in precision amplification stages.	Use Scenario: Clamps transient surges on 36 V supply rails feeding MEMS pressure sensors in automotive HVAC modules. IC Role / Device Role / Timing Role: Protective shunt element diverting excess energy to ground during ESD or load-dump events. Use Value: Activates at 37.05 V with fast response and 130 mA max current handling, preventing sensor IC damage without crowbar action.
DC Power Supply Regulation	Microcontroller Reset Circuit Protection
Use Scenario: Regulates auxiliary 37 V rail in isolated flyback converter feedback loop for optocoupler biasing. IC Role / Device Role / Timing Role: Precision voltage reference setting feedback divider ratio for secondary-side regulation. Use Value: Maintains ±5% accuracy and low 130 Ω Z_Z to ensure <±0.5% output voltage variation under line/load transients.	Use Scenario: Protects 3.3 V microcontroller reset pin from 36 V system bus coupling via capacitive coupling or wiring faults. IC Role / Device Role / Timing Role: Standby-mode clamp limiting voltage excursion to safe levels during fault conditions. Use Value: Blocks >30 V with only 0.1 mA leakage, preserving reset logic integrity while enabling fast recovery after fault clearance.

Voltage Reference for Op-Amp Biasing

Overvoltage Clamp in Sensor Interface

Use Scenario: Provides stable 37 V reference for rail-to-rail op-amp input biasing in industrial analog front-ends.

IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to generate fixed reference voltage.

Use Value: Delivers <1.85 V total tolerance window and low 130 Ω impedance, minimizing offset drift across temperature in precision amplification stages.

Use Scenario: Clamps transient surges on 36 V supply rails feeding MEMS pressure sensors in automotive HVAC modules.

IC Role / Device Role / Timing Role: Protective shunt element diverting excess energy to ground during ESD or load-dump events.

Use Value: Activates at 37.05 V with fast response and 130 mA max current handling, preventing sensor IC damage without crowbar action.

DC Power Supply Regulation

Microcontroller Reset Circuit Protection

Use Scenario: Regulates auxiliary 37 V rail in isolated flyback converter feedback loop for optocoupler biasing.

IC Role / Device Role / Timing Role: Precision voltage reference setting feedback divider ratio for secondary-side regulation.

Use Value: Maintains ±5% accuracy and low 130 Ω Z_Z to ensure <±0.5% output voltage variation under line/load transients.

Use Scenario: Protects 3.3 V microcontroller reset pin from 36 V system bus coupling via capacitive coupling or wiring faults.

IC Role / Device Role / Timing Role: Standby-mode clamp limiting voltage excursion to safe levels during fault conditions.

Use Value: Blocks >30 V with only 0.1 mA leakage, preserving reset logic integrity while enabling fast recovery after fault clearance.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N6014RLG	Same 37.05 V Zener voltage, ±5% tolerance, DO-35 package, but manufactured by ON Semiconductor with 120 Ω Z_Z @ 5 mA	Identical clamping function; slightly lower impedance improves regulation under dynamic loads	Preferred when tighter dynamic regulation is required and ON Semi sourcing is preferred
BZX55-C36	36 V nominal Zener, ±5%, DO-35, 100 Ω Z_Z @ 5 mA, 0.1 mA I_R @ 28.8 V	1.05 V lower nominal voltage; suitable where 36 V threshold is acceptable and lower impedance is prioritized	Select when system margin allows 36 V clamping and lower dynamic impedance is critical

Compared with 1N6014B_T50R, 1N6014RLG offers marginally better regulation stability due to lower 120 Ω impedance, while BZX55-C36 trades 1.05 V lower nominal voltage for improved 100 Ω impedance-both require validation of voltage margin and thermal derating in final layout.

Availability

1N6014B_T50R is available at Aetrix Electronics and suitable for voltage reference design, overvoltage protection, DC power supply regulation, and microcontroller reset circuit protection requiring stable component supply and long-term obsolescence management.

Supply support for 1N6014B_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 devices before its acquisition by ON Semiconductor in 2016.

The 1N6014B_T50R belongs to Fairchild's legacy 1N5985B–1N6025B Zener diode family, engineered for precision voltage regulation and transient suppression in industrial, automotive, and instrumentation applications.

FAQ

What is the nominal Zener voltage of the 1N6014B_T50R?

The 1N6014B_T50R has a nominal Zener voltage of 37.05 V, with a guaranteed range of 37.05 V (min) to 40.95 V (max) at 5 mA test current and ±5% tolerance. This value is measured under thermal equilibrium at 30°C lead temperature with 3/8″ lead length, per Fairchild's Rev. C2 datasheet.

What is the maximum power dissipation rating for the 1N6014B_T50R?

The 1N6014B_T50R is rated for 500 mW power dissipation at lead temperature (T_L) ≤ 75°C. Above 75°C, it derates linearly at 4.0 mW/°C. This rating applies to the DO-35 glass package with 3/8″ lead length and defines the upper limit for continuous DC power handling in stable thermal environments.

How is cathode identification implemented on the 1N6014B_T50R?

The cathode of the 1N6014B_T50R is marked by a single color band on the DO-35 glass case, consistent with industry-standard Zener diode marking. This band identifies the terminal that must be held at higher potential than the anode to achieve reverse-bias Zener breakdown operation.

What is the Zener impedance of the 1N6014B_T50R and why does it matter?

The 1N6014B_T50R exhibits 130 Ω Zener impedance (Z_Z) at 5 mA test current. This parameter quantifies how much the output voltage varies with small changes in Zener current-lower values indicate tighter regulation. In practice, 130 Ω ensures <0.13 V shift per 1 mA load change, critical for stable reference generation.

Can the 1N6014B_T50R be used in high-temperature environments?

Yes, the 1N6014B_T50R supports junction and storage temperatures from -65°C to +200°C. Its DO-35 glass package and silicon construction enable reliable operation in under-hood automotive, industrial motor drives, and downhole instrumentation where ambient temperatures exceed 125°C, provided thermal derating is applied above 75°C lead temperature.

1N6014B_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):: 39 V

Tolerance:: ±5%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 130 Ohms

Current - Reverse Leakage @ Vr:: 100 nA @ 30 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

1N6014B_T50R FAQ

1.How can I place an order for 1N6014B_T50R through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N6014B_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 1N6014B_T50R reliable?

The price and inventory of 1N6014B_T50R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6014B_T50R is usually 5 days.

3.What payment methods are accepted for 1N6014B_T50R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6014B_T50R transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N6014B_T50R?

1N6014B_T50R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N6014B_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 1N6014B_T50R?

For technical support, including 1N6014B_T50R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6014B_T50R requirements.

6.How does Aetrix verify that 1N6014B_T50R is sourced from the original manufacturer or authorized distributors?

All 1N6014B_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 1N6014B_T50R meets industry standards.

7.What is the process for return or replacement of 1N6014B_T50R?

All 1N6014B_T50R units undergo pre-shipment inspection (PSI). If there is an issue with 1N6014B_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 1N6014B_T50R part is unused and in its original packaging.

Return procedure for 1N6014B_T50R:

1.Submit a request within 90 days.

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

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