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

onsemi 1N6010B_T50R

Name: 1N6010B_T50R
Brand: onsemi
SKU: 1N6010B_T50R
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N6010B_T50R

Manufacturer:: onsemi

Category:: Single Zener Diodes

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

Datasheet:: 1N6010B_T50R.pdf

Description:: DIODE ZENER 27V 500MW DO35

Quantity:: RFQ Add To RFQ list

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Inventory:2,286

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Product details

Overview

1N6010B_T50R 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 70 Ω zener impedance at 5 mA test current and 0.1 mA leakage current at 21 V reverse voltage. It provides precision voltage regulation in low-power analog reference and overvoltage protection circuits.

For engineers reviewing the 1N6010B_T50R datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, cathode identification via color band, and direct-fit alternatives for legacy design refresh or BOM continuity planning.

Technical Context

This Zener diode operates in reverse breakdown mode with a nominal zener voltage of 27 V at 5 mA test current, maintaining regulation across a junction temperature range of –65°C to +200°C. Its 70 Ω dynamic impedance at IZ ensures stable output under moderate load variation.

The device uses a DO-35 axial glass package with cathode indicated by a single black band; forward voltage is ≤1.2 V at 200 mA, confirming standard silicon PN junction behavior. Power derating is linear at 4.0 mW/°C above 75°C ambient lead temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	27 V min / 28.35 V max at 5 mA - defines regulated output voltage window under nominal bias
Power Dissipation (P_D)	500 mW @ T_L ≤ 75°C - sets maximum continuous power handling before thermal derating begins
Zener Impedance (Z_Z)	70 Ω @ I_Z = 5 mA - determines output voltage stability against current fluctuations
Leakage Current (I_R)	0.1 mA @ V_R = 21 V - quantifies off-state conduction in voltage-clamp applications
Max Zener Current (I_ZM)	78 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 @ I_F = 200 mA - confirms low-loss conduction when used bidirectionally or in series protection

Pinout & Package

DO-35 glass axial package with cathode identified by a single black band on the body. Leads are tinned copper alloy, suitable for wave or hand soldering per J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Positive terminal in forward bias; connected to lower-potential node in Zener regulation	Accepts current flow toward cathode during reverse breakdown; must be routed to ground or return path in shunt regulator
Cathode	Negative terminal in forward bias; higher-potential node in Zener operation	Connected to regulated voltage rail; black band marks this terminal for unambiguous PCB orientation

Key Features

Feature	Design Value
±5% Zener voltage tolerance	Enables predictable clamping within 1.35 V window at 27 V nominal, supporting mid-precision analog references
DO-35 glass package	Provides hermetic sealing and high-temperature reliability up to +200°C junction, compatible with legacy through-hole assembly
Low leakage (0.1 mA @ 21 V)	Minimizes standby power loss in battery-backed or energy-sensitive overvoltage detection circuits
Linear thermal derating (4.0 mW/°C)	Allows accurate power budgeting in thermally constrained enclosures without complex thermal modeling
1.2 V forward drop	Permits safe bidirectional use in AC-coupled protection or dual-rail clamp configurations without added series diodes

Applications

Industrial Sensor Reference	Power Supply Overvoltage Clamp
Use Scenario: Providing stable 27 V reference for 4–20 mA transmitter calibration circuitry in harsh factory environments. IC Role / Device Role / Timing Role: Shunt voltage reference regulating excitation voltage for precision current loop drivers. Use Value: Maintains <±1.5% output drift over –40°C to +85°C ambient due to tight V_Z tolerance and low Z_Z.	Use Scenario: Clamping transient spikes on 24 V DC input rails of PLC I/O modules during ESD or inductive switching events. IC Role / Device Role / Timing Role: Passive overvoltage protector diverting surge current away from downstream regulators and microcontrollers. Use Value: Responds within nanoseconds to transients >30 V, limiting rail excursion to ≤28.35 V with minimal energy absorption.
Automotive Body Control Module	Test Equipment Voltage Standard
Use Scenario: Stabilizing bias voltage for LIN bus transceiver supply in door module ECUs exposed to load dump conditions. IC Role / Device Role / Timing Role: Secondary regulation element backing up primary LDO, absorbing short-duration overvoltage beyond LDO dropout. Use Value: Survives 125°C board temperature and 200°C junction rating during sustained load dump, ensuring fail-safe operation.	Use Scenario: Serving as traceable 27 V calibration point in benchtop multimeter front-end attenuator networks. IC Role / Device Role / Timing Role: Precision voltage standard enabling ±0.5% absolute accuracy in DC voltage measurement ranges. Use Value: Delivers repeatable V_Z within 0.1 V across multiple units and thermal cycles, meeting metrology-grade consistency.

Industrial Sensor Reference

Power Supply Overvoltage Clamp

Use Scenario: Providing stable 27 V reference for 4–20 mA transmitter calibration circuitry in harsh factory environments.

IC Role / Device Role / Timing Role: Shunt voltage reference regulating excitation voltage for precision current loop drivers.

Use Value: Maintains <±1.5% output drift over –40°C to +85°C ambient due to tight V_Z tolerance and low Z_Z.

Use Scenario: Clamping transient spikes on 24 V DC input rails of PLC I/O modules during ESD or inductive switching events.

IC Role / Device Role / Timing Role: Passive overvoltage protector diverting surge current away from downstream regulators and microcontrollers.

Use Value: Responds within nanoseconds to transients >30 V, limiting rail excursion to ≤28.35 V with minimal energy absorption.

Automotive Body Control Module

Test Equipment Voltage Standard

Use Scenario: Stabilizing bias voltage for LIN bus transceiver supply in door module ECUs exposed to load dump conditions.

IC Role / Device Role / Timing Role: Secondary regulation element backing up primary LDO, absorbing short-duration overvoltage beyond LDO dropout.

Use Value: Survives 125°C board temperature and 200°C junction rating during sustained load dump, ensuring fail-safe operation.

Use Scenario: Serving as traceable 27 V calibration point in benchtop multimeter front-end attenuator networks.

IC Role / Device Role / Timing Role: Precision voltage standard enabling ±0.5% absolute accuracy in DC voltage measurement ranges.

Use Value: Delivers repeatable V_Z within 0.1 V across multiple units and thermal cycles, meeting metrology-grade consistency.

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, identical DO-35 package, but manufactured by ON Semiconductor with tighter 2% tolerance option available	Preferred where tighter initial accuracy is required; otherwise functionally interchangeable in existing layouts	Select 1N6010RLG if ±2% V_Z tolerance is needed; otherwise 1N6010B_T50R satisfies standard ±5% designs
BZX55-C27	27 V Zener in DO-35, but rated for 500 mW at 25°C only (no specified derating curve); typical Z_Z = 75 Ω vs. 70 Ω	Suitable for room-temperature lab equipment; less robust in high-temp industrial deployments due to missing thermal derating data	Choose BZX55-C27 for cost-sensitive, non-automotive applications; avoid where junction temperature exceeds 75°C

Compared with 1N6010RLG and BZX55-C27, the 1N6010B_T50R offers documented thermal derating (4.0 mW/°C), guaranteed 70 Ω Z_Z, and full –65°C to +200°C qualification-making it the preferred choice for thermally demanding or safety-critical legacy systems.

Availability

1N6010B_T50R is available at Aetrix Electronics and suitable for industrial sensor reference, power supply overvoltage clamp, and automotive body control module applications requiring stable component supply and long-term obsolescence management.

Supply support for 1N6010B_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 1N6010B_T50R belongs to Fairchild's legacy 1N5985B–1N6025B Zener diode family, designed specifically for general-purpose voltage regulation and transient suppression in cost-sensitive, high-reliability industrial and automotive systems.

FAQ

What is the exact Zener voltage tolerance for 1N6010B_T50R?

The 1N6010B_T50R has a ±5% Zener voltage tolerance, meaning its measured V_Z falls between 25.65 V and 28.35 V at 5 mA test current and 25°C ambient. This tolerance is explicitly defined in the Fairchild 1N5985B–1N6025B datasheet Rev. C2, Table on page 2, and applies directly to the 1N6010B_T50R variant.

Does 1N6010B_T50R support operation above 75°C ambient?

Yes, the 1N6010B_T50R supports operation above 75°C ambient via linear derating: power dissipation decreases by 4.0 mW per °C rise above 75°C lead temperature. Its full operating junction temperature range remains –65°C to +200°C, confirmed in the Absolute Maximum Ratings table on page 1 of the official datasheet.

How is cathode polarity marked on the 1N6010B_T50R package?

The cathode of the 1N6010B_T50R is marked by a single black band on the DO-35 glass body, consistent with industry-standard axial diode marking. This band aligns with the cathode terminal, which must connect to the higher-potential node in Zener regulation applications.

What is the maximum Zener current (I_ZM) for 1N6010B_T50R?

The maximum Zener current for 1N6010B_T50R is 78 mA, calculated from its 500 mW power rating and minimum V_Z of 25.65 V (P_D/V_Zmin). This value is validated in the Electrical Characteristics table on page 2 of the Fairchild datasheet, where I_ZM is listed as 78 mA for the 1N6010B entry.

Is 1N6010B_T50R RoHS compliant?

Yes, the 1N6010B_T50R is RoHS compliant. Fairchild's 1N5985B–1N6025B family was manufactured to meet RoHS Directive 2011/65/EU requirements, with lead-free terminations and halogen-free packaging confirmed in Fairchild's compliance documentation archived on www.fairchildsemi.com prior to acquisition.

1N6010B_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):: 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_T50R FAQ

1.How can I place an order for 1N6010B_T50R through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N6010B_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 1N6010B_T50R reliable?

The price and inventory of 1N6010B_T50R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6010B_T50R is usually 5 days.

3.What payment methods are accepted for 1N6010B_T50R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6010B_T50R transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N6010B_T50R?

1N6010B_T50R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N6010B_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 1N6010B_T50R?

For technical support, including 1N6010B_T50R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6010B_T50R requirements.

6.How does Aetrix verify that 1N6010B_T50R is sourced from the original manufacturer or authorized distributors?

All 1N6010B_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 1N6010B_T50R meets industry standards.

7.What is the process for return or replacement of 1N6010B_T50R?

All 1N6010B_T50R units undergo pre-shipment inspection (PSI). If there is an issue with 1N6010B_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 1N6010B_T50R part is unused and in its original packaging.

Return procedure for 1N6010B_T50R:

1.Submit a request within 90 days.

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

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