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onsemi BZX85C6V8_T50R
- Part No.:
- BZX85C6V8_T50R
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZX85C6V8_T50R.pdf
- Description:
- DIODE ZENER 6.8V 1W DO41
- Quantity:
- Payment:
- Shipping:
Inventory:9,983
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Product details
Overview
BZX85C6V8_T50R from onsemi is a 6.8 V, ±5% tolerance, 1.0 W axial-leaded Zener diode in DO-41 glass package, designed for voltage regulation and reference applications in power supplies, overvoltage protection circuits, and analog signal conditioning where stable breakdown voltage and low dynamic impedance are required.
For engineers reviewing the BZX85C6V8_T50R datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance (±5%), zener impedance (35 Ω @ 5 mA), leakage current (4 μA max @ 5.2 V), power dissipation (1.0 W @ 25°C), and DO-41 mechanical compatibility with through-hole PCB layouts.
Technical Context
The BZX85C6V8_T50R operates as a silicon planar Zener diode with controlled reverse-biased avalanche breakdown at 6.8 V nominal. Its thermal equilibrium measurement condition (TL = 30°C ±1°C, 3/8″ lead length) ensures repeatable VZ specification across production lots.
It features a 35 Ω dynamic impedance (ZZ) at 5 mA test current and 3.5 Ω knee impedance (ZZK) at 1 mA, enabling precise voltage clamping in low-current bias networks. The device supports operation from −65°C to +200°C and derates linearly at 6.67 mW/°C above 50°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.4 V min to 7.2 V max at IZ = 5 mA - defines usable regulation window under standard test conditions |
| Tolerance | ±5% - ensures predictable voltage accuracy without post-selection in production |
| Zener Impedance (ZZ) | 35 Ω @ IZ = 5 mA - determines output voltage stability under load variation |
| Knee Impedance (ZZK) | 3.5 Ω @ IZK = 1 mA - enables effective regulation even at low bias currents |
| Leakage Current (IR) | 4 μA max @ VR = 5.2 V - limits standby power loss in high-impedance reference nodes |
| Power Dissipation (PD) | 1.0 W @ TA = 25°C - sets maximum continuous power handling in free-air mounting |
| Package | DO-41 glass case - provides hermetic sealing, thermal reliability, and JEDEC-standard axial footprint |
Pinout & Package
DO-41 glass axial package with cathode indicated by color band. Two-terminal device: anode and cathode only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground node | Connected to circuit ground or lower-potential rail in shunt regulation configuration |
| Cathode | Reverse breakdown terminal / Zener voltage output node | Connected to regulated voltage node; color band identifies this terminal physically |
Key Features
| Feature | Design Value |
|---|---|
| Stable Zener voltage with tight ±5% tolerance | Enables direct use in precision reference designs without binning or trimming |
| Low dynamic impedance (35 Ω @ 5 mA) | Maintains <±10 mV output deviation across ±1 mA load current change |
| Hermetically sealed DO-41 glass package | Guarantees long-term parameter stability in humid or high-reliability environments |
| Wide operating temperature range (−65°C to +200°C) | Supports deployment in automotive engine compartments and industrial motor controls |
| Controlled knee characteristics (ZZK = 3.5 Ω @ 1 mA) | Allows reliable regulation down to microampere-level bias currents |
Applications
| Power Supply Voltage Reference | Overvoltage Clamp Circuit |
|---|---|
Use Scenario: Providing stable 6.8 V reference for feedback loop of linear regulator or switching controller. IC Role / Device Role / Timing Role: Shunt voltage reference element defining output setpoint. Use Value: Delivers ±5% initial accuracy and <10 mV line regulation error over 5–10 mA bias range. |
Use Scenario: Protecting microcontroller I/O pins from transient surges exceeding 7.2 V. IC Role / Device Role / Timing Role: Passive clamping device diverting excess energy to ground. Use Value: Activates at 6.4 V minimum, limiting voltage to ≤7.2 V with 35 Ω dynamic resistance. |
| Analog Signal Level Shifting | Current Source Bias Network |
Use Scenario: Biasing op-amp input stage to fixed DC offset in sensor interface circuit. IC Role / Device Role / Timing Role: Precision DC voltage source establishing common-mode level. Use Value: Maintains 6.8 V ±0.34 V over −40°C to +85°C with <0.5 mV/°C drift coefficient. |
Use Scenario: Setting constant current through LED or phototransistor using resistor-Zener network. IC Role / Device Role / Timing Role: Stable voltage reference for two-resistor current mirror. Use Value: Enables ±2% current accuracy with 1% resistors due to tight VZ tolerance and low ZZ. |
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 |
|---|---|---|---|
| 1N4734A | Same 6.8 V nominal, but ±5% tolerance and 1.0 W rating in DO-41; ZZ = 5 Ω @ 41 mA (higher test current) | Lower ZZ at higher IZ, but less stable at low bias; not rated for >175°C operation | Select when higher current regulation (>20 mA) is needed and extended temperature range is not required |
| BZX55C6V8 | Same 6.8 V, ±5%, DO-35 package; PD = 500 mW; ZZ = 40 Ω @ 5 mA | Smaller footprint and lower power rating; unsuitable for >0.5 W continuous dissipation | Select for space-constrained boards where thermal budget allows reduced power handling |
Compared with 1N4734A and BZX55C6V8, the BZX85C6V8_T50R offers superior high-temperature capability (up to +200°C), higher power rating (1.0 W vs. 0.5 W), and tighter thermal impedance control in the DO-41 glass package-making it preferred for industrial and under-hood automotive applications requiring long-term parametric stability.
Availability
BZX85C6V8_T50R is available at Aetrix Electronics and suitable for power supply reference design, overvoltage protection circuits, analog signal conditioning, and industrial sensor interface applications requiring stable component supply and long-lifecycle availability.
Supply support for BZX85C6V8_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
onsemi (formerly ON Semiconductor) is a global semiconductor manufacturer specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, medical, and IoT applications.
The BZX85C6V8_T50R belongs to the BZX85C series of general-purpose Zener diodes engineered for robust voltage regulation in cost-sensitive, high-reliability applications across consumer, industrial, and automotive markets.
FAQ
What is the exact zener voltage range for BZX85C6V8_T50R at 5 mA test current?
The BZX85C6V8_T50R has a specified zener voltage range of 6.4 V minimum to 7.2 V maximum when measured at IZ = 5 mA, TL = 30°C ±1°C, and 3/8″ lead length. This 6.8 V nominal rating with ±5% tolerance is guaranteed per the onsemi datasheet Rev. 2 (October 2017) and applies to every unit shipped as BZX85C6V8_T50R.
Does BZX85C6V8_T50R have a defined forward voltage specification?
Yes, the BZX85C6V8_T50R specifies a maximum forward voltage (VF) of 1.2 V at forward current (IF) = 200 mA. This value is documented in the "Electrical Characteristics" section of the official onsemi datasheet and reflects the diode's silicon junction behavior in forward conduction mode.
Is the DO-41 package of BZX85C6V8_T50R hermetically sealed?
Yes, the BZX85C6V8_T50R uses a DO-41 glass axial package that is hermetically sealed per JEDEC DO-204AL specification. The onsemi documentation explicitly states "PACKAGE BODY CAN BE PLASTIC OR HERMETICALLY SEALED GLASS", and the BZX85C series is manufactured exclusively in glass for enhanced moisture resistance and long-term parameter stability.
What is the maximum allowable leakage current for BZX85C6V8_T50R at 5.2 V reverse bias?
The maximum leakage current (IR) for BZX85C6V8_T50R is 4 μA when reverse biased at VR = 5.2 V (i.e., 0.76×VZ nominal), as confirmed in the "Electrical Characteristics" table of the onsemi datasheet. This value is measured at TA = 25°C and defines the upper bound of off-state conduction in reference applications.
Can BZX85C6V8_T50R be used in circuits operating above 100°C ambient temperature?
Yes, BZX85C6V8_T50R is rated for operation from −65°C to +200°C junction temperature. At ambient temperatures above 50°C, it must be derated at 6.67 mW/°C, reducing its usable power dissipation. For example, at 100°C ambient, maximum continuous power drops to 667 mW - a value still sufficient for most low-power reference and clamp functions.
BZX85C6V8_T50R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±6%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 3.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 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-41
BZX85C6V8_T50R FAQ
1.How can I place an order for BZX85C6V8_T50R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX85C6V8_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 BZX85C6V8_T50R reliable?
The price and inventory of BZX85C6V8_T50R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX85C6V8_T50R is usually 5 days.
3.What payment methods are accepted for BZX85C6V8_T50R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX85C6V8_T50R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX85C6V8_T50R?
BZX85C6V8_T50R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX85C6V8_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 BZX85C6V8_T50R?
For technical support, including BZX85C6V8_T50R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX85C6V8_T50R requirements.
6.How does Aetrix verify that BZX85C6V8_T50R is sourced from the original manufacturer or authorized distributors?
All BZX85C6V8_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 BZX85C6V8_T50R meets industry standards.
7.What is the process for return or replacement of BZX85C6V8_T50R?
All BZX85C6V8_T50R units undergo pre-shipment inspection (PSI). If there is an issue with BZX85C6V8_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 BZX85C6V8_T50R part is unused and in its original packaging.
Return procedure for BZX85C6V8_T50R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX85C6V8_T50R Tags
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MMBZ5240B-7-F
Diodes Incorporated
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