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onsemi BZX85C6V2_T50R
- Part No.:
- BZX85C6V2_T50R
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZX85C6V2_T50R.pdf
- Description:
- DIODE ZENER 6.2V 1W DO41
- Quantity:
- Payment:
- Shipping:
Inventory:3,837
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Product details
Overview
BZX85C6V2_T50R from onsemi is a 6.2 V, ±5% tolerance, 1.0 W axial-leaded Zener diode in DO-41 glass package, rated for 1.3 W at lead temperature (TL = 25°C), with 35 Ω zener impedance at 4 mA test current and 1 μA max leakage at 4.9 V reverse voltage - used for precision voltage regulation and overvoltage protection in power supply feedback paths.
For engineers reviewing the BZX85C6V2_T50R datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance, power derating above 50°C (6.67 mW/°C), thermal resistance (junction-to-lead), cathode band marking, and compliance with JEDEC DO-204AL mechanical standards.
Technical Context
The BZX85C6V2_T50R operates as a silicon planar Zener diode optimized for stable voltage reference and clamping in DC power rails. Its 6.2 V nominal breakdown voltage is specified at thermal equilibrium with lead temperature held at 30°C ±1°C and 3/8″ lead length, ensuring repeatable measurement conditions across production lots.
It exhibits low dynamic impedance (35 Ω @ IZ = 4 mA) and tight voltage tolerance (±5%), enabling accurate regulation under varying load currents. The device supports operation from –65°C to +200°C and maintains reliability under transient overvoltage stress when operated within its absolute maximum ratings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.8 V min / 6.6 V max at IZ = 4 mA - defines usable regulation window for feedback loop design |
| Power Dissipation (PD) | 1.0 W @ TA = 25°C - sets maximum continuous power in free-air ambient |
| Zener Impedance (ZZ) | 35 Ω @ IZ = 4 mA - determines output voltage variation under load current changes |
| Leakage Current (IR) | 1 μA max @ VR = 4.9 V - ensures minimal standby current in high-impedance bias networks |
| Operating Temp Range | –65°C to +200°C - enables use in automotive under-hood and industrial high-temp environments |
| Forward Voltage (VF) | 1.2 V max @ IF = 200 mA - confirms standard silicon diode conduction behavior in forward bias |
Pinout & Package
DO-41 glass axial package with cathode indicated by a single color band on the body; leads are tinned copper-clad steel, suitable for wave or hand soldering per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower-potential node in Zener mode | Accepts forward current up to 200 mA; referenced to cathode for reverse-bias regulation |
| Cathode | Current exit terminal in forward bias; connected to higher-potential node in Zener mode | Marked by color band; carries regulated output voltage in shunt regulator configurations |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables precise setpoint control without external trimming in cost-sensitive power supplies |
| Low Zener impedance (35 Ω) | Minimizes output voltage deviation under ±10 mA load transients in feedback networks |
| DO-41 glass package | Provides hermetic sealing and high thermal conductivity for reliable long-term operation |
| 1.3 W power rating at TL = 25°C | Supports higher pulsed power handling than ambient-rated limit when leads act as heat sinks |
Applications
| Switch-Mode Power Supply Feedback | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Regulates error amplifier reference in isolated flyback converter secondary-side feedback loop. IC Role / Device Role / Timing Role: Zener diode provides stable 6.2 V reference to optocoupler LED anode, defining primary-side duty cycle threshold. Use Value: Tight 6.2 V ±5% tolerance ensures consistent output voltage regulation across line/load variations. |
Use Scenario: Generates clean reset signal during brown-out condition for ARM Cortex-M0+ MCU. IC Role / Device Role / Timing Role: Shunt regulator holds reset line low until VCC exceeds 6.2 V × 0.95 = 5.89 V. Use Value: Low 1 μA leakage prevents premature release of reset in battery-backed systems. |
| Industrial Sensor Signal Conditioning | Overvoltage Clamp for RS-485 Transceivers |
Use Scenario: Stabilizes excitation voltage for 4–20 mA current-loop pressure sensor bridge. IC Role / Device Role / Timing Role: Provides low-noise, low-drift 6.2 V bias to Wheatstone bridge, reducing gain error sensitivity to supply ripple. Use Value: 35 Ω ZZ limits bridge voltage shift to <15 mV under 400 μA bridge current variation. |
Use Scenario: Protects RS-485 receiver inputs against ESD and surge events exceeding ±15 V. IC Role / Device Role / Timing Role: Clamps common-mode voltage to 6.6 V max, preventing transceiver latch-up during fast transients. Use Value: Glass DO-41 construction withstands repeated 8 kV HBM ESD strikes without parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4735A | 6.2 V ±5%, 1.0 W, DO-41, but ZZ = 5 Ω @ 41 mA - lower impedance at higher test current | Requires higher bias current (41 mA vs. 4 mA) to achieve spec; less suitable for low-power microcontroller reset | Prefer BZX85C6V2_T50R where low test-current operation and low leakage are critical |
| MMSZ4685 | 6.2 V ±5%, 500 mW, SOD-123 surface-mount, ZZ = 50 Ω @ 1 mA - higher impedance, lower power rating | Not interchangeable due to package and thermal limitations; unsuitable for >0.5 W continuous dissipation | Select BZX85C6V2_T50R for through-hole mounting, higher power handling, and legacy board compatibility |
Compared with 1N4735A and MMSZ4685, the BZX85C6V2_T50R delivers optimal balance of low-leakage operation at 4 mA bias, robust 1.0 W power capability in axial form, and proven reliability in high-temperature industrial environments - making it preferred for space-constrained yet thermally demanding analog regulation tasks.
Availability
BZX85C6V2_T50R is available at Aetrix Electronics and suitable for switch-mode power supply feedback, microcontroller reset circuits, industrial sensor signal conditioning, and RS-485 overvoltage clamping requiring stable component supply and long-lifecycle support.
Supply support for BZX85C6V2_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 supplier specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The BZX85C6V2_T50R belongs to the BZX85C series of general-purpose Zener diodes designed for precision voltage reference and transient suppression in cost-sensitive, high-reliability power and signal conditioning applications.
FAQ
What is the maximum reverse voltage the BZX85C6V2_T50R can block before breakdown?
The BZX85C6V2_T50R has a nominal Zener voltage of 6.2 V with ±5% tolerance, meaning its guaranteed breakdown range is 5.8 V to 6.6 V at IZ = 4 mA. It is not rated for blocking voltages significantly below this range - operation below 4.9 V reverse bias ensures leakage remains ≤1 μA. The device is intended for controlled reverse conduction, not high-voltage blocking.
Does the BZX85C6V2_T50R meet JEDEC DO-41 mechanical specifications?
Yes, the BZX85C6V2_T50R conforms to JEDEC DO-204AL (DO-41) standards, including axial lead configuration, glass body construction, 0.86 mm minimum lead diameter, and 2.03–2.72 mm body diameter. Mechanical drawings confirm compliance with revision DO41AREV2, and the cathode band aligns with JEDEC polarity marking requirements.
Can the BZX85C6V2_T50R be used in place of the BZX85C6V8_T50R?
No - the BZX85C6V2_T50R and BZX85C6V8_T50R have different nominal Zener voltages (6.2 V vs. 6.8 V), distinct voltage tolerances (both ±5%), and non-overlapping regulation ranges (5.8–6.6 V vs. 6.4–7.2 V). Substitution would cause incorrect reference or clamp levels in feedback or protection circuits and is not recommended without circuit revalidation.
What is the thermal resistance from junction to lead for the BZX85C6V2_T50R?
The BZX85C6V2_T50R has a thermal resistance of approximately 150°C/W from junction to lead (RθJL), derived from its 1.3 W power rating at TL = 25°C and 1.0 W rating at TA = 25°C. This value reflects the DO-41 glass package's ability to conduct heat through the leads and is critical for calculating junction temperature rise under real-world PCB mounting conditions.
Is the BZX85C6V2_T50R suitable for automotive under-hood applications?
Yes - the BZX85C6V2_T50R is qualified for operation from –65°C to +200°C and features a hermetically sealed glass DO-41 package resistant to thermal cycling and humidity. Its 1.0 W power rating and stable Zener characteristics make it suitable for engine control unit (ECU) voltage monitoring, sensor biasing, and transient suppression in automotive under-hood environments.
BZX85C6V2_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):
- 6.2 V
- Tolerance:
- ±6%
- 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
BZX85C6V2_T50R FAQ
1.How can I place an order for BZX85C6V2_T50R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX85C6V2_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 BZX85C6V2_T50R reliable?
The price and inventory of BZX85C6V2_T50R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX85C6V2_T50R is usually 5 days.
3.What payment methods are accepted for BZX85C6V2_T50R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX85C6V2_T50R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX85C6V2_T50R?
BZX85C6V2_T50R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX85C6V2_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 BZX85C6V2_T50R?
For technical support, including BZX85C6V2_T50R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX85C6V2_T50R requirements.
6.How does Aetrix verify that BZX85C6V2_T50R is sourced from the original manufacturer or authorized distributors?
All BZX85C6V2_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 BZX85C6V2_T50R meets industry standards.
7.What is the process for return or replacement of BZX85C6V2_T50R?
All BZX85C6V2_T50R units undergo pre-shipment inspection (PSI). If there is an issue with BZX85C6V2_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 BZX85C6V2_T50R part is unused and in its original packaging.
Return procedure for BZX85C6V2_T50R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX85C6V2_T50R Tags
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