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

onsemi 1N6010B_T50A

Name: 1N6010B_T50A
Brand: onsemi
SKU: 1N6010B_T50A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N6010B_T50A

Manufacturer:: onsemi

Category:: Single Zener Diodes

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

Datasheet:: 1N6010B_T50A.pdf

Description:: DIODE ZENER 27V 500MW DO35

Quantity:: RFQ Add To RFQ list

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Inventory:9,642

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Product details

Overview

1N6010B_T50A from Fairchild Semiconductor is a 27 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, 70 Ω zener impedance at 5 mA test current, and 0.1 mA leakage current at 21 V reverse voltage. It provides precise voltage regulation in low-power reference and protection circuits.

For engineers reviewing the 1N6010B_T50A datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal limits, Zener impedance behavior, leakage performance, and direct-fit alternatives - all confirmed for the exact 1N6010B_T50A variant per Fairchild Rev. C2 documentation.

Technical Context

This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load and temperature conditions. Its 27 V nominal Zener voltage is specified at 5 mA test current with ±5% tolerance, and it exhibits 70 Ω dynamic impedance at that bias point.

The device supports operation from –65°C to +200°C junction/storage temperature range and is rated for 19 mA maximum Zener current (IZM) at 27 V, constrained by its 500 mW power limit and thermal derating curve above 75°C ambient lead temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	27 V nominal at 5 mA test current; ±5% tolerance ensures stable reference within ±1.35 V over production lot.
Power Dissipation (P_D)	500 mW at TL ≤ 75°C; defines maximum continuous power handling before thermal derating begins.
Zener Impedance (Z_Z)	70 Ω at I_Z = 5 mA; indicates low AC impedance for effective ripple suppression in regulated supplies.
Leakage Current (I_R)	0.1 mA max at V_R = 21 V; confirms minimal off-state conduction below breakdown threshold.
Max Zener Current (I_ZM)	19 mA at V_Z = 27 V; derived from P_D/V_Z, sets safe DC current ceiling for sustained regulation.
Operating Temp Range	–65°C to +200°C; enables use in automotive under-hood, industrial control, and aerospace environments.

Pinout & Package

DO-35 glass axial package with cathode indicated by color band; two-terminal device requiring no orientation-specific PCB layout beyond standard diode polarity marking.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / Zener breakdown return path	Connected to lower-potential side of circuit; carries reverse current during regulation.
Cathode	Zener breakdown voltage reference terminal	Marked with color band; connected to higher-potential side to establish regulated output voltage.

Key Features

Feature	Design Value
±5% Zener voltage tolerance	Enables tight reference accuracy without external trimming in cost-sensitive voltage monitor designs.
70 Ω Zener impedance at 5 mA	Delivers low output impedance for stable regulation under moderate load transients in feedback networks.
0.1 mA leakage at 21 V	Minimizes standby power loss in battery-backed systems where reverse-bias current must be tightly controlled.
DO-35 glass package	Provides hermetic sealing and high reliability for long-life applications in harsh thermal environments.

Applications

Overvoltage Protection	Voltage Reference
Use Scenario: Clamping transient surges on 24 V industrial sensor lines exposed to ESD or inductive kickback. IC Role / Device Role / Timing Role: Shunt regulator absorbing excess energy to hold line voltage at ≤27 V. Use Value: Prevents damage to downstream op-amps and ADC inputs by limiting excursion to 27 V ±1.35 V with fast response.	Use Scenario: Providing stable 27 V reference for analog-to-digital conversion in programmable logic controller (PLC) input modules. IC Role / Device Role / Timing Role: Precision voltage reference source for ratiometric measurement circuits. Use Value: Enables <1% full-scale error in 12-bit measurements due to ±5% V_Z tolerance and low 70 Ω Z_Z.
Power Supply Regulation	Signal Level Translation
Use Scenario: Regulating auxiliary 27 V rail in isolated flyback converter feedback loop for gate driver biasing. IC Role / Device Role / Timing Role: Secondary-side Zener shunt regulating feedback voltage to control primary-side PWM duty cycle. Use Value: Maintains ±1.5% output stability over –40°C to +85°C ambient via low thermal coefficient and DO-35 thermal mass.	Use Scenario: Biasing level-shifting network between 3.3 V microcontroller GPIO and 24 V fieldbus interface. IC Role / Device Role / Timing Role: Clamp diode establishing defined high-level threshold at 27 V to prevent overvoltage on receiver inputs. Use Value: Ensures robust interoperability with legacy 24 V industrial protocols while protecting CMOS inputs from >27 V excursions.

Overvoltage Protection

Voltage Reference

Use Scenario: Clamping transient surges on 24 V industrial sensor lines exposed to ESD or inductive kickback.

IC Role / Device Role / Timing Role: Shunt regulator absorbing excess energy to hold line voltage at ≤27 V.

Use Value: Prevents damage to downstream op-amps and ADC inputs by limiting excursion to 27 V ±1.35 V with fast response.

Use Scenario: Providing stable 27 V reference for analog-to-digital conversion in programmable logic controller (PLC) input modules.

IC Role / Device Role / Timing Role: Precision voltage reference source for ratiometric measurement circuits.

Use Value: Enables <1% full-scale error in 12-bit measurements due to ±5% V_Z tolerance and low 70 Ω Z_Z.

Power Supply Regulation

Signal Level Translation

Use Scenario: Regulating auxiliary 27 V rail in isolated flyback converter feedback loop for gate driver biasing.

IC Role / Device Role / Timing Role: Secondary-side Zener shunt regulating feedback voltage to control primary-side PWM duty cycle.

Use Value: Maintains ±1.5% output stability over –40°C to +85°C ambient via low thermal coefficient and DO-35 thermal mass.

Use Scenario: Biasing level-shifting network between 3.3 V microcontroller GPIO and 24 V fieldbus interface.

IC Role / Device Role / Timing Role: Clamp diode establishing defined high-level threshold at 27 V to prevent overvoltage on receiver inputs.

Use Value: Ensures robust interoperability with legacy 24 V industrial protocols while protecting CMOS inputs from >27 V excursions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N6010RLG	Same 27 V nominal V_Z, ±5% tolerance, DO-35 package, but manufactured by ON Semiconductor; 75 Ω Z_Z vs. 70 Ω for 1N6010B_T50A.	Identical thermal rating and leakage spec; slightly higher Z_Z yields marginally reduced ripple rejection in precision references.	Select when sourcing from ON Semiconductor supply chain; verify layout compatibility with same DO-35 footprint.
BZX55-C27	27 V ±5% V_Z, DO-35, but rated for 500 mW at 25°C (not TL ≤ 75°C); 100 Ω Z_Z at 5 mA; 0.1 mA I_R at 21 V.	Lower thermal robustness above 25°C ambient; requires additional heatsinking or derating for high-temp operation.	Use in ambient-controlled environments only; avoid in under-hood or enclosed industrial enclosures exceeding 50°C.

Compared with 1N6010B_T50A, 1N6010RLG offers identical specification compliance with minor Zener impedance variation, while BZX55-C27 trades thermal resilience for broader distributor availability - making 1N6010B_T50A optimal for high-reliability, thermally demanding applications.

Availability

1N6010B_T50A is available at Aetrix Electronics and suitable for overvoltage protection, voltage reference, power supply regulation, and signal level translation requiring stable component supply across industrial automation, test equipment, and embedded control systems.

Supply support for 1N6010B_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, analog, and discrete components before its acquisition by ON Semiconductor in 2016; known for high-reliability diodes and MOSFETs.

The 1N6010B_T50A belongs to Fairchild's legacy 1N5985B–1N6025B Zener diode family, engineered for precision voltage regulation and transient suppression in industrial-grade power and signal conditioning circuits.

FAQ

What is the Zener voltage tolerance for 1N6010B_T50A?

The 1N6010B_T50A has a ±5% Zener voltage tolerance at 27 V nominal, meaning its actual breakdown voltage falls between 25.65 V and 28.35 V when measured at 5 mA test current and 30°C lead temperature. This tolerance is guaranteed across production lots and directly impacts reference accuracy in analog circuits using the 1N6010B_T50A.

What is the maximum Zener current (I_ZM) for 1N6010B_T50A?

The maximum Zener current for 1N6010B_T50A is 19 mA, calculated from its 500 mW power rating divided by its nominal 27 V Zener voltage. This value applies at TL ≤ 75°C; above that temperature, current must be reduced per the 4.0 mW/°C derating factor to prevent thermal runaway in the 1N6010B_T50A.

Does 1N6010B_T50A have a specified forward voltage?

Yes - the 1N6010B_T50A has a maximum forward voltage (V_F) of 1.2 V at 200 mA forward current, consistent with standard silicon diode behavior. This parameter is relevant when the 1N6010B_T50A is used in series with other components or during fault conditions involving forward conduction.

What is the Zener impedance (Z_Z) of 1N6010B_T50A and why does it matter?

The 1N6010B_T50A exhibits 70 Ω Zener impedance at 5 mA test current, indicating how much its voltage changes per unit change in current. A lower Z_Z like this improves regulation stability under varying load conditions - critical when the 1N6010B_T50A serves as a reference in feedback loops or precision clamp circuits.

Is 1N6010B_T50A suitable for automotive under-hood applications?

Yes - the 1N6010B_T50A is rated for –65°C to +200°C operating and storage temperature range and uses a hermetically sealed DO-35 glass package, making it suitable for under-hood automotive applications where thermal cycling and long-term reliability are required. Its thermal derating profile supports sustained operation up to 75°C lead temperature without derating, and beyond with linear reduction - key for engine control module designs using the 1N6010B_T50A.

1N6010B_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):: 27 V

Tolerance:: ±5%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 70 Ohms

Current - Reverse Leakage @ Vr:: 100 nA @ 21 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

1N6010B_T50A FAQ

1.How can I place an order for 1N6010B_T50A through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N6010B_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 1N6010B_T50A reliable?

The price and inventory of 1N6010B_T50A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6010B_T50A is usually 5 days.

3.What payment methods are accepted for 1N6010B_T50A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6010B_T50A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N6010B_T50A?

1N6010B_T50A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N6010B_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 1N6010B_T50A?

For technical support, including 1N6010B_T50A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6010B_T50A requirements.

6.How does Aetrix verify that 1N6010B_T50A is sourced from the original manufacturer or authorized distributors?

All 1N6010B_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 1N6010B_T50A meets industry standards.

7.What is the process for return or replacement of 1N6010B_T50A?

All 1N6010B_T50A units undergo pre-shipment inspection (PSI). If there is an issue with 1N6010B_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 1N6010B_T50A part is unused and in its original packaging.

Return procedure for 1N6010B_T50A:

1.Submit a request within 90 days.

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

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