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Nexperia USA Inc. BZX79-C10,143
- Part No.:
- BZX79-C10,143
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
BZX79-C10,143.pdf
- Description:
- DIODE ZENER 10V 400MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:4,142
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Product details
Overview
BZX79-C10,143 from Nexperia is a ±5% tolerance Zener voltage regulator diode with nominal 10 V breakdown voltage at 5 mA test current, 50 Ω typical differential resistance, and 4.5 mV/K temperature coefficient. It operates as a low-power voltage reference in bias networks, power supply feedback paths, and overvoltage protection circuits, rated for 500 mW total power dissipation at 50 °C ambient.
For engineers reviewing the BZX79-C10,143 datasheet, BZX79-C10,143 pinout, BZX79-C10,143 application, or BZX79-C10,143 equivalent, key selection criteria include Zener voltage tolerance (±5%), thermal coefficient (4.5 mV/K), junction-to-ambient thermal resistance (380 K/W), reverse leakage (200 nA at 7 V), and DO-35 package compatibility with through-hole PCB assembly.
Technical Context
This device functions as a two-terminal, silicon planar Zener diode operating in reverse breakdown to maintain stable DC voltage under varying load or input conditions. Its E24-standardized 10 V nominal Zener voltage is specified at IZtest = 5 mA, with 50 Ω typical dynamic impedance ensuring predictable regulation slope across its operating range.
The diode exhibits a positive temperature coefficient of +4.5 mV/K at 5 mA, indicating increasing Zener voltage with rising junction temperature - a critical factor when used in temperature-sensitive references or compensated bias networks. Its hermetically sealed SOD27 (DO-35) glass package supports reliable operation from −65 °C to +200 °C storage temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 9.80–10.20 V at IZ = 5 mA; defines stable regulation point for low-current reference use |
| Tolerance | ±5%; allows cost-effective selection where tight voltage accuracy is not required |
| Differential Resistance rdif | 50–150 Ω typical; determines output impedance and load regulation error |
| Temperature Coefficient SZ | +4.5 mV/K at IZ = 5 mA; quantifies voltage drift per degree Celsius rise |
| Reverse Leakage IR | 200 nA at VR = 7 V; impacts quiescent current in high-impedance bias networks |
| Total Power Dissipation Ptot | 500 mW at Tamb = 50 °C; sets maximum continuous power handling on standard PCB |
| Junction-to-Ambient Rth j-a | 380 K/W; defines thermal rise per watt under natural convection mounting |
Pinout & Package
Hermetically sealed axial-leaded SOD27 (DO-35) glass package with cathode band marking; leads are tinned copper alloy, suitable for wave or hand soldering. Package dimensions: D = 1.85 mm max, L = 25.4 mm min, b = 0.56 mm max.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-voltage side in reverse-bias operation | Connected to circuit ground or lower potential node when used as shunt regulator |
| Cathode | Reverse breakdown terminal / high-voltage side in regulation mode | Connected to input or supply rail; voltage at this node is clamped to VZ during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low-cost ±5% Zener tolerance | Enables economical voltage referencing where precision is secondary to reliability and availability |
| Hermetic DO-35 glass package | Ensures long-term stability and moisture resistance in industrial and automotive environments |
| 500 mW power rating at 50 °C | Supports robust operation in unheatsinked, space-constrained PCB layouts |
| 200 nA reverse leakage at 7 V | Minimizes standby current draw in battery-powered or ultra-low-power monitoring circuits |
| +4.5 mV/K tempco at 5 mA | Provides predictable, linear voltage drift for temperature-compensated designs |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Used in TL431-based adjustable SMPS feedback loops to set output voltage via resistor divider. IC Role / Device Role / Timing Role: Provides stable 10 V reference point for optocoupler biasing and error amplifier input scaling. Use Value: Enables accurate ±5% output regulation without requiring precision resistors or trimming. | Use Scenario: Placed across microcontroller I/O pins or sensor supply rails to limit transient overvoltage. IC Role / Device Role / Timing Role: Acts as passive shunt clamp, conducting only when rail exceeds 10.2 V threshold. Use Value: Absorbs up to 40 W non-repetitive surges (100 μs), protecting downstream CMOS inputs. |
| Linear Regulator Bias Network | Temperature-Compensated Reference |
Use Scenario: Supplies base current to pass transistor in discrete 12 V linear regulator designs. IC Role / Device Role / Timing Role: Sets emitter voltage of series pass transistor, defining regulated output level. Use Value: Maintains stable bias point despite input ripple, with <150 Ω dynamic impedance limiting gain error. | Use Scenario: Paired with negative-tempco diode in analog instrumentation front-ends. IC Role / Device Role / Timing Role: Provides positive-tempco voltage element to cancel thermal drift in sensor signal chains. Use Value: +4.5 mV/K coefficient enables precise cancellation of −2.2 mV/K op-amp offset drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX79-B10,113 | ±2% tolerance (9.80–10.20 V → 9.90–10.10 V); 40 Ω typical rdif; +4.0 mV/K tempco | Higher accuracy and lower impedance suit precision references; tighter tolerance increases cost | Select when regulation stability under varying load current is critical |
| 1N4740A | 10 V nominal, ±5%, 200 mW rating, DO-41 package, 17 Ω rdif, +12.5 mV/K tempco | Lower power rating and higher tempco limit use in thermally unstable environments | Select only for legacy DO-41 board compatibility; avoid in new designs requiring thermal stability |
Compared with BZX79-B10,113, the BZX79-C10,143 trades tighter voltage control and lower impedance for lower cost and broader availability; versus 1N4740A, it offers superior thermal stability and higher power handling in the same functional role but requires DO-35 footprint adaptation.
Availability
BZX79-C10,143 is available at Aetrix Electronics and suitable for power supply feedback references, overvoltage clamp protection, and linear regulator bias networks requiring stable component supply and long-term obsolescence resilience.
Supply support for BZX79-C10,143 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
Nexperia is a global leader in discrete semiconductors, formed in 2017 from the former NXP Standard Products division, specializing in high-volume, high-reliability components for automotive, industrial, and consumer markets.
The BZX79 series belongs to Nexperia's voltage regulator diode product line, engineered for cost-sensitive, space-constrained applications demanding stable Zener performance in hermetic glass packages.
FAQ
What is the maximum continuous reverse current the BZX79-C10,143 can sustain in regulation?
The device has no defined maximum continuous reverse current rating; instead, its safe operating limit is governed by power dissipation. At 50 °C ambient, it may dissipate up to 500 mW, corresponding to ~50 mA at 10 V. Exceeding this causes junction temperature rise beyond 200 °C, risking permanent failure.
Can BZX79-C10,143 be used in surface-mount designs?
No - it is exclusively packaged in axial-leaded SOD27 (DO-35) glass, designed for through-hole mounting. Surface-mount equivalents such as PZM10A (SOT-23) or BZX84-C10 (SOT-23) exist but differ electrically and mechanically; direct substitution requires layout and thermal redesign.
How does the +4.5 mV/K temperature coefficient affect long-term voltage stability?
A +4.5 mV/K coefficient means the Zener voltage increases by 4.5 mV per Kelvin rise in junction temperature. Over a 50 °C junction swing (e.g., 25 °C to 75 °C), this yields ~225 mV drift - a critical factor in precision references, necessitating thermal management or compensation in sensitive applications.
Is the cathode band polarity consistent across all BZX79-Cxxx variants?
Yes - per Nexperia's SOD27 package specification, the single black band always denotes the cathode terminal across the entire BZX79-C series, including BZX79-C10,143. This marking aligns with JEDEC DO-35 standards and must be observed during PCB layout and assembly to ensure correct reverse-bias orientation.
BZX79-C10,143 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 10 V
- Tolerance:
- ±5%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 7 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ALF2
BZX79-C10,143 FAQ
1.How can I place an order for BZX79-C10,143 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX79-C10,143 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 BZX79-C10,143 reliable?
The price and inventory of BZX79-C10,143 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79-C10,143 is usually 5 days.
3.What payment methods are accepted for BZX79-C10,143?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79-C10,143 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX79-C10,143?
BZX79-C10,143 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX79-C10,143 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 BZX79-C10,143?
For technical support, including BZX79-C10,143 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79-C10,143 requirements.
6.How does Aetrix verify that BZX79-C10,143 is sourced from the original manufacturer or authorized distributors?
All BZX79-C10,143 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 BZX79-C10,143 meets industry standards.
7.What is the process for return or replacement of BZX79-C10,143?
All BZX79-C10,143 units undergo pre-shipment inspection (PSI). If there is an issue with BZX79-C10,143, 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 BZX79-C10,143 part is unused and in its original packaging.
Return procedure for BZX79-C10,143:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX79-C10,143 Tags
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