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onsemi BZX85C6V2-T50A
- Part No.:
- BZX85C6V2-T50A
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZX85C6V2-T50A.pdf
- Description:
- DIODE ZENER 6.2V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:39,000
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Product details
Overview
BZX85C6V2-T50A from Fairchild Semiconductor is a 6.2 V, ±5% tolerance, 1.0 W axial-leaded Zener diode in DO-41 glass package, designed for voltage regulation and reference applications in power supply feedback loops, overvoltage protection circuits, and precision biasing networks.
For engineers reviewing the BZX85C6V2-T50A datasheet, pinout, applications, or equivalent options, this page provides verified Zener voltage, impedance, leakage, thermal derating, and DO-41 package details essential for circuit stability, thermal design, and replacement validation.
Technical Context
The BZX85C6V2-T50A operates as a silicon planar Zener diode with sharp reverse breakdown at 6.2 V nominal, measured at IZ = 1 mA under thermal equilibrium (TL = 30°C, 3/8″ lead length). Its 35 Ω dynamic impedance at IZ ensures stable regulation under moderate load variation.
It features a 1.2 V forward voltage maximum at 200 mA forward current, supports operation from –65°C to +200°C, and exhibits 1 μA maximum leakage at 4.96 V (80% of VZ), enabling low-power standby regulation and precision clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.8 V to 6.6 V @ IZ = 1 mA - defines regulated output range for feedback and clamp circuits |
| Zener Impedance (ZZ) | 35 Ω @ IZ = 1 mA - determines regulation sensitivity to current changes in voltage reference paths |
| Power Dissipation (PD) | 1.0 W @ TA = 25°C - sets maximum continuous power handling without heatsinking |
| Thermal Derating | 6.67 mW/°C above 50°C - enables accurate junction temperature estimation for reliability margining |
| Leakage Current (IR) | 1 μA max @ VR = 4.96 V - ensures minimal error current in high-impedance reference nodes |
| Forward Voltage (VF) | 1.2 V max @ IF = 200 mA - supports bidirectional transient suppression when used with series resistor |
| Package | DO-41 glass case - provides hermetic sealing, high-temperature capability, and axial lead form factor for through-hole mounting |
Pinout & Package
DO-41 glass axial package with cathode indicated by color band. Leads are unmarked but functionally asymmetric: anode (unbanded end) and cathode (banded end).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive terminal in forward bias; connected to lower potential in Zener regulation | Accepts forward current up to 200 mA; referenced to ground or common rail in shunt regulator topologies |
| Cathode | Negative terminal in forward bias; higher-potential node in Zener operation | Connected to regulated output node; carries reverse current during voltage clamping or reference generation |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables predictable regulation without post-production trimming in cost-sensitive consumer and industrial supplies |
| 1.0 W power rating at 25°C ambient | Supports direct shunt regulation of low-to-moderate current rails (e.g., <10 mA feedback paths) without external heat sinking |
| DO-41 glass package | Provides hermetic seal and extended operating temperature range (–65°C to +200°C) for automotive and industrial environments |
| Low 1 μA leakage at 80% VZ | Minimizes quiescent error in high-resistance voltage divider references and battery-powered monitoring circuits |
| 35 Ω dynamic impedance at 1 mA | Delivers tight output voltage stability across ±10% input ripple in linear regulator feedback networks |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulating output voltage in flyback or buck converter feedback loop via optocoupler-coupled TL431 replacement. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 6.2 V threshold for error amplifier comparison. Use Value: Maintains ±1% output accuracy over line/load variations due to stable VZ and low ZZ. |
Use Scenario: Protecting microcontroller I/O pins from ESD or inductive transients exceeding 6.2 V. IC Role / Device Role / Timing Role: Passive clamping element diverting surge current to ground before damage occurs. Use Value: Limits peak voltage to ≤6.6 V with fast response (<1 ns), preventing latch-up in 3.3 V logic interfaces. |
| Temperature-Stable Bias Network | Low-Power Reference Generator |
Use Scenario: Establishing fixed bias point for op-amp input stages in sensor signal conditioning circuits. IC Role / Device Role / Timing Role: Precision DC reference source compensating for amplifier offset drift. Use Value: Delivers <10 ppm/°C effective TC via matched resistor divider, leveraging low thermal coefficient of VZ. |
Use Scenario: Generating stable 6.2 V reference for ADC reference inputs in battery-operated data loggers. IC Role / Device Role / Timing Role: Low-quiescent-current voltage reference with minimal loading effect. Use Value: Draws only 1 μA leakage at 4.96 V, extending battery life while maintaining 0.5% reference accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4735A | Same 6.2 V nominal, ±5% tolerance, but rated at 1.0 W in DO-41 plastic package; ZZ = 50 Ω @ 20 mA (higher than BZX85C6V2-T50A's 35 Ω @ 1 mA) | Higher test current shifts regulation point; less suitable for low-current references where 1 mA operation is required | Select BZX85C6V2-T50A when low-test-current impedance and glass-package reliability are critical |
| MMSZ4685 | SOD-123 surface-mount package; same 6.2 V, ±5%, but rated at 500 mW; ZZ = 40 Ω @ 1 mA; TJ range limited to –65°C to +150°C | Not drop-in replaceable due to SMT footprint and lower power; unsuitable for through-hole legacy designs or high-temp environments | Choose MMSZ4685 only for space-constrained PCBs where reflow compatibility and automated assembly outweigh thermal/power needs |
Compared with 1N4735A and MMSZ4685, the BZX85C6V2-T50A offers superior low-current regulation (35 Ω @ 1 mA), hermetic DO-41 glass construction for extended temperature operation, and proven suitability in through-hole power supply feedback and industrial clamping-making it the preferred choice where reliability and precision at minimal bias current are required.
Availability
BZX85C6V2-T50A is available at Aetrix Electronics and suitable for switch-mode power supply feedback, overvoltage protection clamp, and low-power reference generator applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for BZX85C6V2-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; its legacy products remain widely deployed in industrial and automotive systems.
The BZX85C6V2-T50A belongs to Fairchild's BZX85C series of general-purpose Zener diodes, engineered for robust voltage regulation in cost-sensitive, high-reliability power conversion and protection circuits.
FAQ
What is the Zener voltage tolerance of the BZX85C6V2-T50A?
The BZX85C6V2-T50A has a guaranteed Zener voltage range of 5.8 V to 6.6 V at IZ = 1 mA, corresponding to a ±5% tolerance. This specification is tested per JEDEC standards and applies across the full operating temperature range, ensuring consistent performance in voltage reference and regulation circuits using the BZX85C6V2-T50A.
Does the BZX85C6V2-T50A have a specified forward voltage?
Yes, the BZX85C6V2-T50A specifies a maximum forward voltage of 1.2 V at IF = 200 mA. This parameter is relevant when the device is used in bidirectional protection schemes or when forward conduction must be modeled in transient analysis involving the BZX85C6V2-T50A.
What is the thermal derating behavior of the BZX85C6V2-T50A above 50°C?
The BZX85C6V2-T50A derates linearly at 6.67 mW/°C above 50°C ambient temperature. For example, at 75°C ambient, its usable power dissipation drops to 1.0 W − (25 × 6.67 mW) = 833 mW. This derating curve is critical for thermal design when deploying the BZX85C6V2-T50A in enclosed or high-temperature environments.
Is the BZX85C6V2-T50A available in tape-and-reel packaging?
Yes, the BZX85C6V2-T50A is supplied in tape-and-reel format per Fairchild's PKG-DO41A_TC specification, supporting automated pick-and-place assembly. The reel quantity and packaging dimensions conform to industry-standard DO-41 axial tape configurations, facilitating seamless integration into high-volume manufacturing workflows using the BZX85C6V2-T50A.
What does the "T50A" suffix indicate in BZX85C6V2-T50A?
The "T50A" suffix denotes Fairchild's internal tape-and-reel packaging variant: "T" indicates tape-and-reel, "50" refers to 50 mm tape width, and "A" identifies the specific reel configuration and orientation standard. This marking ensures mechanical compatibility with standard DO-41 feeders and distinguishes the BZX85C6V2-T50A from bulk or ammo-pack versions of the same device.
BZX85C6V2-T50A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±6.45%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 4 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZX85C6V2-T50A FAQ
1.How can I place an order for BZX85C6V2-T50A through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX85C6V2-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 BZX85C6V2-T50A reliable?
The price and inventory of BZX85C6V2-T50A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX85C6V2-T50A is usually 5 days.
3.What payment methods are accepted for BZX85C6V2-T50A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX85C6V2-T50A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX85C6V2-T50A?
BZX85C6V2-T50A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX85C6V2-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 BZX85C6V2-T50A?
For technical support, including BZX85C6V2-T50A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX85C6V2-T50A requirements.
6.How does Aetrix verify that BZX85C6V2-T50A is sourced from the original manufacturer or authorized distributors?
All BZX85C6V2-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 BZX85C6V2-T50A meets industry standards.
7.What is the process for return or replacement of BZX85C6V2-T50A?
All BZX85C6V2-T50A units undergo pre-shipment inspection (PSI). If there is an issue with BZX85C6V2-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 BZX85C6V2-T50A part is unused and in its original packaging.
Return procedure for BZX85C6V2-T50A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX85C6V2-T50A Tags
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