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onsemi BZX79C6V2-T50A
- Part No.:
- BZX79C6V2-T50A
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
BZX79C6V2-T50A.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:14,120
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Product details
Overview
BZX79C6V2-T50A from ON Semiconductor is a 6.2 V, 5% tolerance, 500 mW DO-35 glass-encapsulated Zener diode optimized for voltage regulation and reference applications in power supply feedback loops, overvoltage protection circuits, and precision biasing networks.
For engineers reviewing the BZX79C6V2-T50A datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage accuracy (5.8–6.6 V), dynamic impedance (≤10 Ω @ 5 mA), leakage current (≤3 μA @ 4 V), temperature coefficient (+0.4 mV/°C), and DO-35 package compatibility with through-hole PCB assembly.
Technical Context
The BZX79C6V2-T50A operates as a silicon planar Zener diode with controlled reverse breakdown at nominal 6.2 V, specified at 5 mA test current. Its low dynamic impedance (10 Ω max) ensures stable regulation under varying load conditions, while its ±5% tolerance and +0.4 mV/°C temperature coefficient support moderate-precision reference needs without active compensation.
Designed for DC and low-frequency AC stabilization, it exhibits no switching or transient response specifications-its function is purely steady-state voltage clamping. The DO-35 package provides axial leads, glass passivation, and cathode band marking, meeting JEDEC DO-35 mechanical standards and supporting manual or wave soldering at TL ≤ 75°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.8–6.6 V @ IZ = 5 mA - defines regulation range for feedback or clamp operation |
| Power Dissipation (PD) | 500 mW @ TL ≤ 75°C - sets maximum continuous DC power handling in standard lead configuration |
| Dynamic Impedance (ZZ) | ≤10 Ω @ IZ = 5 mA - determines output voltage variation under load current changes |
| Leakage Current (IR) | ≤3 μA @ VR = 4 V - ensures minimal error current in high-impedance reference nodes |
| Temperature Coefficient (TC) | +0.4 mV/°C - quantifies drift magnitude per degree Celsius above 25°C ambient |
| Junction Temperature Range | −65 to +200°C - supports operation in extended industrial and automotive under-hood environments |
| Capacitance (C) | 90 pF @ VR = 0 V, f = 1 MHz - relevant for high-frequency noise coupling considerations in filtering paths |
Pinout & Package
DO-35 glass axial-leaded package with cathode indicated by a single color band. Leads are tinned copper-clad steel, suitable for hand or wave soldering. Mechanical dimensions conform to JEDEC DO-35 standard: body diameter 1.85 mm, length 3.6 mm, lead diameter 0.45 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-voltage side in reverse-bias operation | Connected to lower potential node when used as shunt regulator; carries forward current up to 100 mA (VF ≤ 1.5 V) |
| Cathode | Zener breakdown terminal / high-voltage side in reverse-bias operation | Marked with color band; connected to regulated voltage node; sustains reverse breakdown at 6.2 V nominal |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables use in non-critical regulation where tighter tolerance is not required, reducing cost vs. BZX84 or BZX85 series |
| Low dynamic impedance (≤10 Ω) | Maintains <10 mV output shift per 100 mA load change-sufficient for basic feedback and clamp functions |
| Stable temperature coefficient (+0.4 mV/°C) | Supports predictable drift behavior across −40°C to +125°C operating range without external compensation |
| DO-35 glass package with cathode band | Provides visual polarity identification and hermetic reliability for long-term stability in humid or corrosive environments |
| 500 mW power rating at 75°C lead temperature | Allows direct integration into low-power linear regulators and protection circuits without heatsinking |
Applications
| Power Supply Feedback | Overvoltage Clamp |
|---|---|
Use Scenario: Used in the optocoupler feedback path of isolated flyback converters to regulate output voltage. IC Role / Device Role / Timing Role: Zener reference element providing stable 6.2 V threshold to drive optocoupler LED. Use Value: Enables ±5% output regulation accuracy without secondary-side controller IC, reducing BOM count and cost. | Use Scenario: Placed across microcontroller I/O pins to limit transient overvoltage during ESD events. IC Role / Device Role / Timing Role: Shunt protection device clamping voltage to 6.6 V peak during fast transients. Use Value: Limits pin stress to safe levels below absolute maximum ratings, complementing internal ESD structures. |
| Reference Biasing | Signal Level Translation |
Use Scenario: Provides stable bias voltage for op-amp input stages in sensor signal conditioning circuits. IC Role / Device Role / Timing Role: Precision DC reference source establishing common-mode voltage for differential amplifiers. Use Value: Delivers <10 ppm/°C effective drift when combined with low-TC resistors, improving offset stability. | Use Scenario: Shifts logic-level signals between 5 V and 3.3 V domains using resistor-divider + Zener topology. IC Role / Device Role / Timing Role: Clamping element defining upper rail of level-shifted interface. Use Value: Ensures 3.3 V receiver inputs never exceed 6.6 V, preventing latch-up in mixed-voltage systems. |
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, but ±5% tolerance and 1.0 Ω typical ZZ; DO-41 package (larger, higher PD = 1 W) | Higher power handling enables use in higher-current shunt regulators; larger footprint may conflict with space-constrained layouts | Select when >500 mW dissipation is needed or existing DO-41 footprint is fixed |
| BZX55C6V2 | Same 6.2 V, ±5%, DO-35 package, but higher ZZ (20 Ω max) and wider leakage (≤5 μA @ 4 V) | Suitable for less demanding regulation tasks; lower cost but reduced regulation tightness and noise immunity | Select for cost-sensitive consumer applications where 10–20 mV extra regulation error is acceptable |
Compared with 1N4735A and BZX55C6V2, the BZX79C6V2-T50A offers optimal balance of DO-35 footprint, 10 Ω ZZ, and 3 μA leakage-making it preferred for compact, medium-precision voltage references in industrial control and telecom power modules.
Availability
BZX79C6V2-T50A is available at Aetrix Electronics and suitable for power supply feedback, overvoltage protection, and reference biasing applications requiring stable component supply across industrial automation, telecom infrastructure, and embedded instrumentation designs.
Supply support for BZX79C6V2-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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, sensors, and logic devices for automotive, industrial, cloud computing, and consumer markets.
The BZX79C6V2-T50A belongs to the BZX79C family of general-purpose Zener diodes designed for cost-effective, reliable voltage regulation and reference functions in DC power and protection circuits.
FAQ
What is the nominal Zener voltage and tolerance of the BZX79C6V2-T50A?
The BZX79C6V2-T50A has a nominal Zener voltage of 6.2 V with a ±5% tolerance, meaning its actual breakdown voltage falls between 5.8 V and 6.6 V when tested at 5 mA. This specification is measured under thermal equilibrium at 30°C lead temperature with 3/8″ lead length, per ON Semiconductor's datasheet revision 3. The BZX79C6V2-T50A is intended for applications where this tolerance band meets system-level regulation requirements.
What is the maximum power dissipation and derating behavior of the BZX79C6V2-T50A?
The BZX79C6V2-T50A is rated for 500 mW power dissipation at a lead temperature (TL) of ≤75°C, with a linear derating of 4.0 mW/°C above that temperature. This means at 100°C lead temperature, its usable power drops to 400 mW. The BZX79C6V2-T50A must be mounted with 3/8″ lead length to meet this rating, and thermal design must account for ambient, board conduction, and airflow to avoid exceeding junction limits.
Does the BZX79C6V2-T50A have a specified forward voltage?
Yes-the BZX79C6V2-T50A has a maximum forward voltage (VF) of 1.5 V at 100 mA forward current, as stated in the "Electrical Characteristics" table. This parameter applies when the device is operated in forward conduction mode, such as in polarity-protection or OR-ing configurations. The BZX79C6V2-T50A is not optimized for forward conduction, so sustained forward current should remain within safe thermal limits defined by its power rating.
How is polarity identified on the BZX79C6V2-T50A package?
The BZX79C6V2-T50A uses a single color band on the DO-35 glass body to denote the cathode terminal, consistent with industry-standard marking for axial Zener diodes. The unmarked end is the anode. This marking is visible under standard inspection lighting and remains legible after soldering. The BZX79C6V2-T50A's top-marking layout follows ON Semiconductor's convention: first line is logo, second line reads "9C", third line reads "6V2", confirming both part identity and voltage rating.
What is the junction-to-ambient thermal resistance (RθJA) of the BZX79C6V2-T50A?
The BZX79C6V2-T50A does not specify RθJA directly in its datasheet; instead, ON Semiconductor defines thermal performance via lead temperature (TL) limits and derating curves. For design purposes, the BZX79C6V2-T50A's thermal behavior assumes 3/8″ lead length and free-air conditions. If board-level thermal modeling is required, empirical measurement or simulation using the DO-35 package geometry and material properties is recommended-no published RθJA value exists for the BZX79C6V2-T50A.
BZX79C6V2-T50A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 100 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
BZX79C6V2-T50A FAQ
1.How can I place an order for BZX79C6V2-T50A through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX79C6V2-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 BZX79C6V2-T50A reliable?
The price and inventory of BZX79C6V2-T50A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79C6V2-T50A is usually 5 days.
3.What payment methods are accepted for BZX79C6V2-T50A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79C6V2-T50A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX79C6V2-T50A?
BZX79C6V2-T50A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX79C6V2-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 BZX79C6V2-T50A?
For technical support, including BZX79C6V2-T50A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79C6V2-T50A requirements.
6.How does Aetrix verify that BZX79C6V2-T50A is sourced from the original manufacturer or authorized distributors?
All BZX79C6V2-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 BZX79C6V2-T50A meets industry standards.
7.What is the process for return or replacement of BZX79C6V2-T50A?
All BZX79C6V2-T50A units undergo pre-shipment inspection (PSI). If there is an issue with BZX79C6V2-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 BZX79C6V2-T50A part is unused and in its original packaging.
Return procedure for BZX79C6V2-T50A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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