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onsemi BZX85C5V6-T50R
- Part No.:
- BZX85C5V6-T50R
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZX85C5V6-T50R.pdf
- Description:
- DIODE ZENER 5.6V 1W DO41
- Quantity:
- Payment:
- Shipping:
Inventory:42,000
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Product details
Overview
BZX85C5V6-T50R from Fairchild Semiconductor is a 5.6 V, ±5% tolerance, 1.0 W axial-leaded Zener diode in DO-41 glass package, designed for precision voltage regulation and reference applications in power supply feedback loops, overvoltage protection circuits, and analog signal conditioning stages.
For engineers reviewing the BZX85C5V6-T50R datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage accuracy at IZ = 45 mA, low dynamic impedance (ZZ = 45 Ω), leakage current ≤1 μA at 2 V, thermal stability across -65°C to +200°C, and DO-41 mechanical compatibility with through-hole PCB assembly.
Technical Context
The BZX85C5V6-T50R operates as a silicon planar Zener diode with controlled avalanche breakdown at nominal 5.6 V, specified under thermal equilibrium at lead temperature TL = 30°C ±1°C and 3/8″ lead length. Its 5% tolerance and tight VZ distribution (5.2–6.0 V) support stable DC reference generation in unregulated supplies.
It delivers 1.0 W power dissipation at TA = 25°C with 6.67 mW/°C derating above 50°C, and maintains reliable operation across -65°C to +200°C junction/storage range. The DO-41 glass package ensures hermetic sealing and consistent thermal resistance for repeatable regulation performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.2–6.0 V at IZ = 45 mA - defines regulated output voltage window for feedback and clamp circuits |
| Zener Impedance (ZZ) | 45 Ω @ IZ = 45 mA - determines load regulation error and ripple rejection capability |
| Power Dissipation (PD) | 1.0 W @ TA = 25°C - sets maximum continuous power handling without thermal runaway |
| Leakage Current (IR) | ≤1 μA @ VR = 2 V - ensures minimal quiescent current draw in high-impedance bias networks |
| Tolerance | ±5% - enables predictable voltage margining in safety-critical regulation paths |
| Package | DO-41 glass axial - provides hermeticity, mechanical robustness, and standard through-hole mounting |
| Operating Temp | -65°C to +200°C - supports industrial, automotive under-hood, and aerospace environments |
Pinout & Package
DO-41 glass axial package with cathode indicated by color band. Two-terminal device: anode and cathode leads extend axially from opposite ends of cylindrical glass body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reverse-biased node | Connected to lower-potential side in shunt regulation; forms return path for Zener current |
| Cathode | Zener breakdown terminal / voltage reference node | Marked with color band; connected to regulated output or feedback point in voltage divider networks |
Key Features
| Feature | Design Value |
|---|---|
| Stable 5.6 V reference | Guaranteed 5.2–6.0 V range at 45 mA enables accurate feedback in 5 V SMPS designs |
| Low Zener impedance | 45 Ω dynamic resistance minimizes output voltage shift under varying load currents |
| Hermetic DO-41 glass | Prevents moisture ingress and parameter drift in humid or high-reliability environments |
| Wide temperature range | -65°C to +200°C operation supports deployment in extreme ambient conditions without derating |
| Controlled leakage | ≤1 μA at 2 V ensures negligible error contribution in high-impedance voltage divider references |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters using optocoupler feedback loop. IC Role / Device Role / Timing Role: Zener reference node defining secondary-side regulation threshold for TL431 or optocoupler LED drive. Use Value: Tight 5.6 V tolerance and low ZZ ensure ±1% output accuracy across line/load/temperature. |
Use Scenario: Protecting microcontroller I/O pins from transient surges exceeding 5.5 V. IC Role / Device Role / Timing Role: Shunt clamping element diverting excess current when input exceeds safe logic threshold. Use Value: Fast 5.6 V breakdown onset and 1.0 W surge capacity absorb ESD and inductive spikes without damage. |
| Analog Sensor Signal Conditioning | Reference Voltage Generator |
Use Scenario: Biasing bridge sensors or setting gain in instrumentation amplifier front-ends. IC Role / Device Role / Timing Role: Stable DC reference source for ratiometric excitation or offset calibration. Use Value: Low temperature coefficient and <1 μA leakage preserve measurement resolution in µV-level systems. |
Use Scenario: Generating fixed 5.6 V reference for ADC reference inputs or comparator thresholds. IC Role / Device Role / Timing Role: Precision voltage node independent of supply rail variations. Use Value: 5% tolerance and 45 Ω ZZ enable sub-10 mV reference stability in battery-powered data loggers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A | Same 5.6 V nominal, but ±5% tolerance and 1.0 W rating; ZZ = 5 Ω @ 45 mA (lower impedance) | Higher precision regulation in low-current references; less suitable for high-surge clamping due to plastic DO-41 package | Select 1N4734A when lower dynamic impedance is critical and hermeticity is not required. |
| BZX55C5V6 | Same 5.6 V, ±5%, 500 mW rating; DO-35 glass package; ZZ = 60 Ω @ 20 mA | Lower power handling limits use to low-power bias networks; smaller DO-35 footprint saves board space | Choose BZX55C5V6 for space-constrained designs where 500 mW suffices and thermal mass is lower. |
Compared with 1N4734A and BZX55C5V6, the BZX85C5V6-T50R offers superior thermal robustness via DO-41 glass construction and higher power margin (1.0 W), making it preferred for industrial power supplies and surge-prone interfaces where long-term parameter stability is essential.
Availability
BZX85C5V6-T50R is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and analog sensor signal conditioning requiring stable component supply and long-lifecycle availability.
Supply support for BZX85C5V6-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 BZX85 series was developed for general-purpose Zener regulation in cost-sensitive, high-reliability industrial and consumer power systems, emphasizing wide temperature range, hermetic packaging, and tight voltage tolerance.
FAQ
What is the exact Zener voltage range for BZX85C5V6-T50R at 45 mA test current?
The BZX85C5V6-T50R has a guaranteed Zener voltage range of 5.2 V to 6.0 V when measured at IZ = 45 mA, TL = 30°C ±1°C, and 3/8″ lead length per Fairchild's Rev. 1.1.0 datasheet. This 5.6 V nominal rating with ±5% tolerance ensures predictable regulation behavior in feedback and clamp circuits where BZX85C5V6-T50R is deployed.
Is BZX85C5V6-T50R suitable for high-temperature environments like automotive under-hood applications?
Yes, BZX85C5V6-T50R is rated for junction and storage temperatures from -65°C to +200°C, and its DO-41 glass package provides hermetic sealing critical for reliability in thermally aggressive environments. This makes BZX85C5V6-T50R appropriate for under-hood voltage regulation and protection where sustained high ambient temperatures occur.
How does the Zener impedance of BZX85C5V6-T50R affect its performance in a voltage reference circuit?
The BZX85C5V6-T50R exhibits 45 Ω dynamic impedance at IZ = 45 mA, directly determining how much the output voltage shifts with changes in load current. In a reference circuit, this value ensures minimal regulation error-e.g., a 10 mA load variation causes only ~450 mV deviation-making BZX85C5V6-T50R suitable for moderate-precision analog references where BZX85C5V6-T50R serves as the core voltage-setting element.
Can BZX85C5V6-T50R be used as a replacement for 1N4734A in existing designs?
BZX85C5V6-T50R shares the same 5.6 V nominal voltage and ±5% tolerance as 1N4734A but differs in Zener impedance (45 Ω vs. 5 Ω) and package (DO-41 glass vs. DO-41 plastic). While functionally similar, BZX85C5V6-T50R offers better thermal stability and hermeticity, but slightly higher dynamic impedance. Substitution requires verifying that 45 Ω ZZ meets the target circuit's regulation accuracy requirements before deploying BZX85C5V6-T50R.
What is the maximum leakage current specification for BZX85C5V6-T50R at 2 V reverse voltage?
The BZX85C5V6-T50R has a maximum leakage current of 1 μA at VR = 2 V and TA = 25°C, as specified in Fairchild's BZX85C3V3–BZX85C56 datasheet. This low leakage ensures minimal parasitic current draw in high-impedance bias networks and preserves accuracy in precision reference applications where BZX85C5V6-T50R is used as a stable voltage node.
BZX85C5V6-T50R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.6 V
- Tolerance:
- ±7%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 2 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
BZX85C5V6-T50R FAQ
1.How can I place an order for BZX85C5V6-T50R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX85C5V6-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 BZX85C5V6-T50R reliable?
The price and inventory of BZX85C5V6-T50R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX85C5V6-T50R is usually 5 days.
3.What payment methods are accepted for BZX85C5V6-T50R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX85C5V6-T50R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX85C5V6-T50R?
BZX85C5V6-T50R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX85C5V6-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 BZX85C5V6-T50R?
For technical support, including BZX85C5V6-T50R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX85C5V6-T50R requirements.
6.How does Aetrix verify that BZX85C5V6-T50R is sourced from the original manufacturer or authorized distributors?
All BZX85C5V6-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 BZX85C5V6-T50R meets industry standards.
7.What is the process for return or replacement of BZX85C5V6-T50R?
All BZX85C5V6-T50R units undergo pre-shipment inspection (PSI). If there is an issue with BZX85C5V6-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 BZX85C5V6-T50R part is unused and in its original packaging.
Return procedure for BZX85C5V6-T50R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX85C5V6-T50R Tags
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