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onsemi BZX79C10_T50R
- Part No.:
- BZX79C10_T50R
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
BZX79C10_T50R.pdf
- Description:
- DIODE ZENER 10V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:4,320
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Product details
Overview
BZX79C10_T50R from ON Semiconductor is a 10 V, 5% tolerance, 500 mW DO-35 glass-case Zener diode optimized for voltage regulation and reference applications in low-power analog circuits, power supply feedback loops, and overvoltage protection stages.
For engineers reviewing the BZX79C10_T50R datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance (±5%), dynamic impedance (20 Ω @ 5 mA), leakage current (0.2 μA @ 7.6 V), temperature coefficient (+4.5 mV/°C), and DO-35 package compatibility with through-hole PCB assembly.
Technical Context
This device operates as a reverse-biased silicon junction diode with stable breakdown behavior at nominal 10 V. Its zener voltage is specified at 5 mA test current, with dynamic impedance of 20 Ω and maximum leakage current of 0.2 μA at 7.6 V.
The BZX79C10_T50R exhibits a positive temperature coefficient of +4.5 mV/°C and is rated for operation from –65 °C to +200 °C. It uses a DO-35 axial glass package with cathode band marking and is designed for thermal equilibrium measurement conditions (TL = 30 °C ± 1 °C, 3/8″ lead length).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.4 V min / 10.6 V max @ IZ = 5 mA - defines regulation window for precision reference use |
| Power Dissipation (PD) | 500 mW @ TL ≤ 75 °C - sets maximum continuous DC power handling in standard leaded mounting |
| Dynamic Impedance (ZZ) | 20 Ω max @ IZ = 5 mA - determines output voltage stability under load variation |
| Leakage Current (IR) | 0.2 μA max @ VR = 7.6 V - ensures minimal error current in high-impedance bias networks |
| Temperature Coefficient (TC) | +4.5 mV/°C - quantifies voltage drift per degree Celsius above 25 °C ambient |
| Package | DO-35 glass axial - enables manual soldering, visual cathode identification, and reliable hermetic sealing |
Pinout & Package
DO-35 glass axial package with cathode identified by a single color band on the body. Leads are unmarked anode/cathode terminals; cathode is the banded end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower potential side in reverse-bias regulation configuration |
| Cathode | Zener breakdown terminal | Connected to higher potential side; marked by color band; carries regulated output voltage |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables predictable regulation without post-assembly trimming in cost-sensitive consumer and industrial designs |
| Low dynamic impedance (20 Ω) | Maintains <10 mV output deviation across ±1 mA load current changes at 5 mA bias |
| Hermetically sealed DO-35 glass case | Provides long-term parameter stability and moisture resistance in humid or thermally cycling environments |
| Wide operating temperature range | Supports deployment in automotive under-hood, industrial control, and outdoor equipment without derating below –65 °C |
Applications
| Power Supply Feedback | Overvoltage Clamp |
|---|---|
Use Scenario: Regulating output voltage in discrete linear regulators or TL431-based shunt references. IC Role / Device Role / Timing Role: Provides stable 10 V reference for error amplifier comparison. Use Value: Enables ±5% output accuracy with minimal external components and no active bias circuitry. | Use Scenario: Protecting microcontroller I/O pins from transient surges exceeding 10 V. IC Role / Device Role / Timing Role: Acts as passive clamping element diverting excess energy to ground. Use Value: Limits peak voltage to 10.6 V max while drawing only 0.2 μA leakage at 7.6 V. |
| Voltage Reference | Signal Level Shifting |
Use Scenario: Generating precise bias points for op-amp input stages or ADC reference dividers. IC Role / Device Role / Timing Role: Supplies low-drift 10 V reference in high-impedance node. Use Value: Delivers +4.5 mV/°C TC and 20 Ω ZZ for sub-10 mV total drift over 0–70 °C. | Use Scenario: Translating 3.3 V logic signals to 10 V interface levels for legacy industrial sensors. IC Role / Device Role / Timing Role: Functions as level-shifting clamp referenced to 10 V rail. Use Value: Maintains signal integrity with <20 Ω AC impedance and no forward conduction below 1.5 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4740A | Same 10 V nominal rating, but ±5% tolerance and 1000 mW power rating in DO-41 package | Higher power dissipation supports higher current regulation; larger DO-41 footprint requires layout change | Select when >500 mW power handling or improved thermal margin is required |
| BZX55C10 | Same 10 V rating and DO-35 package, but ±5% tolerance and 500 mW rating with 25 Ω ZZ @ 5 mA | Nearly identical form-factor and function; slightly higher dynamic impedance affects regulation tightness | Choose for direct replacement where 25 Ω ZZ is acceptable in existing designs |
Compared with 1N4740A and BZX55C10, the BZX79C10_T50R offers tighter dynamic impedance (20 Ω vs. 25–30 Ω) in the same DO-35 footprint, making it preferable for low-current precision reference use, though its 500 mW limit restricts high-power clamping roles.
Availability
BZX79C10_T50R is available at Aetrix Electronics and suitable for power supply feedback, overvoltage clamp, and voltage reference applications requiring stable component supply, consistent parametric performance, and long-term obsolescence management.
Supply support for BZX79C10_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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The BZX79C series was developed as a general-purpose, low-power Zener diode family targeting cost-sensitive, high-volume applications requiring stable voltage reference and regulation in compact DO-35 packaging.
FAQ
What is the nominal Zener voltage of the BZX79C10_T50R?
The BZX79C10_T50R has a nominal Zener voltage of 10 V, with a guaranteed range of 9.4 V to 10.6 V at 5 mA test current and ±5% tolerance. This specification is measured under thermal equilibrium at lead temperature of 30 °C ± 1 °C with 3/8″ lead length, per ON Semiconductor's BZX79C2V4–BZX79C56 datasheet Rev. 3.
What is the maximum power dissipation for the BZX79C10_T50R?
The BZX79C10_T50R has a maximum power dissipation of 500 mW at lead temperature ≤ 75 °C, with a derating factor of 4.0 mW/°C above that temperature. This rating applies to standard DO-35 mounting with 3/8″ lead length and defines safe continuous DC operation without thermal runaway.
What package type does the BZX79C10_T50R use?
The BZX79C10_T50R uses a DO-35 glass axial package with cathode indicated by a single color band. This hermetically sealed package supports manual and wave soldering, provides visual polarity identification, and maintains parameter stability across extended temperature and humidity exposure.
What is the dynamic impedance of the BZX79C10_T50R at 5 mA?
The dynamic impedance (ZZ) of the BZX79C10_T50R is 20 Ω maximum at IZ = 5 mA. This value reflects the small-signal AC resistance across the Zener junction and directly impacts regulation accuracy under varying load conditions in reference and clamp applications.
What is the leakage current specification for the BZX79C10_T50R?
The BZX79C10_T50R specifies a maximum leakage current (IR) of 0.2 μA at reverse voltage (VR) = 7.6 V. This low leakage ensures minimal error contribution in high-impedance bias networks and precision reference divider circuits where current draw must be tightly controlled.
BZX79C10_T50R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 10 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 7 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
BZX79C10_T50R FAQ
1.How can I place an order for BZX79C10_T50R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX79C10_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 BZX79C10_T50R reliable?
The price and inventory of BZX79C10_T50R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79C10_T50R is usually 5 days.
3.What payment methods are accepted for BZX79C10_T50R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79C10_T50R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX79C10_T50R?
BZX79C10_T50R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX79C10_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 BZX79C10_T50R?
For technical support, including BZX79C10_T50R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79C10_T50R requirements.
6.How does Aetrix verify that BZX79C10_T50R is sourced from the original manufacturer or authorized distributors?
All BZX79C10_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 BZX79C10_T50R meets industry standards.
7.What is the process for return or replacement of BZX79C10_T50R?
All BZX79C10_T50R units undergo pre-shipment inspection (PSI). If there is an issue with BZX79C10_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 BZX79C10_T50R part is unused and in its original packaging.
Return procedure for BZX79C10_T50R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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