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

onsemi 1N6015B_T50R

Name: 1N6015B_T50R
Brand: onsemi
SKU: 1N6015B_T50R
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N6015B_T50R

Manufacturer:: onsemi

Category:: Single Zener Diodes

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

Datasheet:: 1N6015B_T50R.pdf

Description:: DIODE ZENER 43V 500MW DO35

Quantity:: RFQ Add To RFQ list

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Inventory:4,425

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Product details

Overview

1N6015B_T50R from Fairchild Semiconductor is a 43 V, ±5% tolerance, 500 mW glass-passivated Zener diode in DO-35 package, designed for precision voltage regulation and reference applications in power supply feedback loops, overvoltage protection circuits, and analog signal conditioning stages.

For engineers reviewing the 1N6015B_T50R datasheet, pinout, applications, or equivalent options, this device offers verified Zener voltage stability at 2 mA test current, low dynamic impedance (150 Ω @ 2 mA), and leakage current ≤0.1 mA at 33 V reverse bias - critical for low-power sensing and rail-clamping designs.

Technical Context

This Zener diode operates with a nominal Zener voltage of 43 V (min 40.85 V, typ 43 V, max 45.15 V) at I_Z = 2 mA, with thermal derating of 4.0 mW/°C above 75°C lead temperature. Its DO-35 glass package ensures hermetic sealing and stable long-term voltage drift.

The device exhibits Zener impedance of 150 Ω at 2 mA and 900 Ω at 250 µA, supporting both regulation and reference functions across varying load conditions. Reverse leakage remains ≤0.1 mA up to VR = 33 V, enabling reliable clamping in low-current monitoring paths.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	43 V nominal @ 2 mA; min/max range 40.85–45.15 V ensures ±5% tolerance compliance for stable reference generation
Power Dissipation	500 mW @ T_L ≤ 75°C; enables use in compact linear regulators without forced cooling
Zener Impedance	150 Ω @ I_Z = 2 mA; supports tight output regulation under moderate load transients
Reverse Leakage	≤0.1 mA @ V_R = 33 V; minimizes quiescent current in high-impedance bias networks
Operating Temp Range	−65°C to +200°C; suitable for under-hood automotive and industrial environments
Forward Voltage	≤1.2 V @ I_F = 200 mA; allows use as polarity-sensitive clamp or ESD path in bidirectional protection

Pinout & Package

DO-35 glass axial package with cathode indicated by color band; leads are tinned copper alloy, 3/8″ length standard for thermal rating compliance.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry terminal during forward conduction	Connected to lower-potential node in clamp or regulator configurations; enables bidirectional protection when paired with series resistor
Cathode	Current exit terminal during Zener breakdown	Marked with color band; tied to regulated voltage node or error amplifier input in feedback loops

Key Features

Feature	Design Value
Glass-passivated junction	Ensures long-term parameter stability and resistance to humidity-induced degradation in unsealed assemblies
±5% V_Z tolerance	Reduces need for post-production trimming in cost-sensitive voltage reference designs
Low I_R at 33 V	Enables direct connection to high-impedance op-amp inputs without loading error
Hermetic DO-35 package	Supports MIL-STD-202G testing compliance and extended shelf life without moisture barrier packaging

Applications

Power Supply Feedback	Overvoltage Clamp
Use Scenario: Regulating output voltage in isolated flyback converters using TL431-based optocoupler feedback. IC Role / Device Role / Timing Role: Precision voltage reference establishing 43 V threshold for secondary-side error detection. Use Value: Maintains ±1.5% output regulation across line/load/temperature with minimal external components.	Use Scenario: Protecting microcontroller I/O pins against transient surges on 36 V industrial sensor lines. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting voltage to 43 V before damage threshold of 50 V. Use Value: Limits peak clamping energy to <10 mJ with <100 ns response, preserving downstream logic integrity.
Analog Signal Conditioning	Reference Voltage Source
Use Scenario: Biasing photodiode amplifiers in optical smoke detectors requiring stable 43 V bias. IC Role / Device Role / Timing Role: Low-noise DC reference supplying constant reverse bias to photodiode junction. Use Value: Delivers <5 ppm/°C drift and <0.5 µA leakage variation over −40°C to +85°C operating range.	Use Scenario: Generating fixed 43 V reference for ADC full-scale calibration in battery management systems. IC Role / Device Role / Timing Role: Primary voltage reference for 16-bit SAR ADC offset/gain adjustment routines. Use Value: Enables <±0.02% FS accuracy with <0.1% long-term drift over 10-year field deployment.

Power Supply Feedback

Overvoltage Clamp

Use Scenario: Regulating output voltage in isolated flyback converters using TL431-based optocoupler feedback.

IC Role / Device Role / Timing Role: Precision voltage reference establishing 43 V threshold for secondary-side error detection.

Use Value: Maintains ±1.5% output regulation across line/load/temperature with minimal external components.

Use Scenario: Protecting microcontroller I/O pins against transient surges on 36 V industrial sensor lines.

IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting voltage to 43 V before damage threshold of 50 V.

Use Value: Limits peak clamping energy to <10 mJ with <100 ns response, preserving downstream logic integrity.

Analog Signal Conditioning

Reference Voltage Source

Use Scenario: Biasing photodiode amplifiers in optical smoke detectors requiring stable 43 V bias.

IC Role / Device Role / Timing Role: Low-noise DC reference supplying constant reverse bias to photodiode junction.

Use Value: Delivers <5 ppm/°C drift and <0.5 µA leakage variation over −40°C to +85°C operating range.

Use Scenario: Generating fixed 43 V reference for ADC full-scale calibration in battery management systems.

IC Role / Device Role / Timing Role: Primary voltage reference for 16-bit SAR ADC offset/gain adjustment routines.

Use Value: Enables <±0.02% FS accuracy with <0.1% long-term drift over 10-year field deployment.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4751A (ON Semiconductor)	Same 43 V nominal, but ±5% tolerance achieved at 13 mA test current; higher Z_Z = 200 Ω @ 13 mA	Requires higher bias current; less suitable for ultra-low-power monitoring nodes	Select when higher test current aligns with existing bias network design
BZX55-C43 (Vishay)	43 V nominal, ±5%, DO-35, but rated at 500 mW with 4.0 mW/°C derating - identical thermal profile	Identical mechanical fit and electrical envelope; validated for same automotive AEC-Q200 stress tests	Preferred for AEC-Q200-compliant designs where second-source qualification is required

Compared with 1N4751A and BZX55-C43, the 1N6015B_T50R delivers lower Zener impedance at its specified 2 mA test point and tighter leakage control below 33 V, making it optimal for low-bias, high-stability reference roles where current budget is constrained.

Availability

1N6015B_T50R is available at Aetrix Electronics and suitable for power supply feedback, overvoltage clamp, and analog signal conditioning applications requiring stable component supply, consistent parametric performance, and long-lifecycle availability.

Supply support for 1N6015B_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; its legacy Zener portfolio remains widely deployed in industrial and automotive systems.

The 1N6015B_T50R belongs to Fairchild's 1N5985B–1N6025B Zener diode family, engineered for high-reliability voltage reference and regulation in harsh-environment applications including motor controls, power supplies, and instrumentation.

FAQ

What is the Zener voltage tolerance and test condition for 1N6015B_T50R?

The 1N6015B_T50R has a ±5% Zener voltage tolerance, specified at a test current of 2 mA. Its nominal Zener voltage is 43 V, with minimum and maximum values of 40.85 V and 45.15 V respectively. This tolerance band is guaranteed across the full operating temperature range of −65°C to +200°C, and the device is characterized per JEDEC standards for Zener diodes.

Does 1N6015B_T50R support operation in high-temperature environments?

Yes, the 1N6015B_T50R is rated for an operating junction temperature range of −65°C to +200°C. Its power dissipation is derated linearly at 4.0 mW/°C above a lead temperature of 75°C, allowing reliable operation in under-hood automotive, industrial motor drives, and downhole equipment where ambient temperatures exceed 125°C.

How does the Zener impedance of 1N6015B_T50R affect regulation performance?

The 1N6015B_T50R exhibits a Zener impedance of 150 Ω at 2 mA and 900 Ω at 250 µA. This low dynamic impedance at its rated test current ensures minimal output voltage variation under load changes - critical for maintaining regulation accuracy in feedback loops and reference circuits where source impedance must remain predictable.

Can 1N6015B_T50R be used as a bidirectional ESD protection device?

No - the 1N6015B_T50R is a unidirectional Zener diode optimized for reverse-biased regulation. While its forward voltage is ≤1.2 V at 200 mA, it lacks the symmetric clamping behavior and low dynamic impedance required for effective bidirectional ESD protection. Dedicated TVS diodes such as SMBJ43A are recommended for that function.

Is the DO-35 package of 1N6015B_T50R compatible with automated through-hole assembly?

Yes, the DO-35 glass axial package of the 1N6015B_T50R is fully compatible with standard through-hole insertion and wave soldering processes. Its 0.375″ (9.5 mm) lead length meets IPC-7351 requirements, and the cathode band orientation is machine-readable for automated optical inspection during PCB assembly.

1N6015B_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):: 43 V

Tolerance:: ±5%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 150 Ohms

Current - Reverse Leakage @ Vr:: 100 nA @ 33 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

1N6015B_T50R FAQ

1.How can I place an order for 1N6015B_T50R through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N6015B_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 1N6015B_T50R reliable?

The price and inventory of 1N6015B_T50R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6015B_T50R is usually 5 days.

3.What payment methods are accepted for 1N6015B_T50R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6015B_T50R transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N6015B_T50R?

1N6015B_T50R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N6015B_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 1N6015B_T50R?

For technical support, including 1N6015B_T50R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6015B_T50R requirements.

6.How does Aetrix verify that 1N6015B_T50R is sourced from the original manufacturer or authorized distributors?

All 1N6015B_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 1N6015B_T50R meets industry standards.

7.What is the process for return or replacement of 1N6015B_T50R?

All 1N6015B_T50R units undergo pre-shipment inspection (PSI). If there is an issue with 1N6015B_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 1N6015B_T50R part is unused and in its original packaging.

Return procedure for 1N6015B_T50R:

1.Submit a request within 90 days.

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

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