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Nexperia USA Inc. BZX384-B10,115
- Part No.:
- BZX384-B10,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-B10,115.pdf
- Description:
- DIODE ZENER 10V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:8,544
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Product details
Overview
BZX384-B10,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 10 V nominal breakdown voltage at 5 mA test current, 300 mW total power dissipation, and 150 °C maximum junction temperature. It delivers stable reference voltage in low-power analog circuits, power supply feedback loops, and overvoltage protection stages of consumer and industrial electronics.
For engineers reviewing the BZX384-B10,115 datasheet, BZX384-B10,115 pinout, BZX384-B10,115 application, or BZX384-B10,115 equivalent, this page provides verified electrical parameters, thermal behavior, cathode/anode terminal mapping, real-world use cases, and validated alternative parts with documented functional trade-offs.
Technical Context
This Zener diode operates in reverse-biased breakdown mode with a specified VZ = 9.80 V to 10.20 V at IZ = 5 mA, differential resistance rdif ≤ 150 Ω, and temperature coefficient SZ = +0.2 mV/K. Its non-repetitive peak reverse power dissipation is rated at 40 W for 100 μs pulses.
Designed for surface-mount implementation on FR4 PCBs with single-sided copper, it exhibits Rth(j-a) = 415 K/W (free air) and Rth(j-sp) = 110 K/W (to solder point), supporting reliable thermal management in space-constrained designs without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage | 9.80 V to 10.20 V at 5 mA - defines precise regulation threshold under standard test conditions |
| Power Dissipation | 300 mW at Tamb ≤ 25 °C - sets continuous DC operating limit on standard FR4 PCB |
| Differential Resistance | ≤150 Ω - determines output impedance and load regulation sensitivity |
| Reverse Current | ≤20 μA at VR = 8 V - ensures minimal leakage before breakdown onset |
| Junction Temperature | −65 °C to +150 °C - specifies full operational range for industrial ambient environments |
| Thermal Resistance | 110 K/W (junction-to-solder-point) - enables accurate thermal modeling for PCB layout |
| Forward Voltage | 0.9 V at 10 mA - defines conduction loss when used in forward-biased clamp configurations |
Pinout & Package
SOD323 (SC-76) plastic surface-mounted package with 2 leads; marking bar denotes cathode terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-bias anode-to-cathode voltage establishes breakdown |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes bias path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % voltage tolerance | Enables tighter regulation than ±5 % variants without premium cost of ±1 % grade |
| 300 mW power rating | Supports stable operation in low-current reference and protection circuits without derating |
| Non-repetitive 40 W surge capability | Withstands transient overvoltage events such as ESD or inductive kickback |
| SOD323 footprint compatibility | Matches industry-standard 2.3 mm × 1.35 mm land pattern for automated assembly |
| 150 °C max junction temperature | Permits deployment in thermally demanding environments including enclosed power supplies |
Applications
| Power Supply Feedback | Overvoltage Clamp |
|---|---|
|
Use Scenario: Regulating output voltage in isolated flyback or buck-derived auxiliary supplies. IC Role / Device Role / Timing Role: Provides precision reference voltage to optocoupler feedback network or TL431 comparator input. Use Value: Maintains ±2 % output accuracy across line/load variations due to tight VZ tolerance and low rdif. |
Use Scenario: Protecting microcontroller I/O pins from accidental 12 V bus exposure. IC Role / Device Role / Timing Role: Acts as shunt clamp between signal line and ground, conducting only above 10 V threshold. Use Value: Limits transient energy with 40 W non-repetitive surge rating while adding <1.1 V forward drop during fault. |
| Reference Voltage Source | Signal Level Translation |
|
Use Scenario: Generating stable 10 V reference for ADC biasing or sensor excitation in data loggers. IC Role / Device Role / Timing Role: Supplies low-noise, temperature-compensated voltage to analog front-end circuitry. Use Value: Delivers +0.2 mV/K temperature coefficient-near-zero drift across −40 °C to +85 °C operating range. |
Use Scenario: Shifting logic levels between 3.3 V MCU and 10 V industrial sensor interface. IC Role / Device Role / Timing Role: Functions as bidirectional level translator using forward conduction and reverse breakdown. Use Value: Enables robust interface with 0.9 V forward drop and 10 V clamping ceiling-no external bias required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics BZT52-B10 | Same 10 V ±2 % rating, but 500 mW Ptot, SOD-123 package (larger footprint) | Higher power handling supports higher current references; requires PCB redesign | Select when >300 mW continuous dissipation is needed and board space allows larger package |
| Vishay BZX384-C10 | Same SOD323 package, but ±5 % tolerance (9.4 V–10.6 V), lower cost | Reduced regulation accuracy acceptable in non-critical biasing or coarse clamping | Select for cost-sensitive applications where ±2 % stability is not required |
Compared with BZX384-B10,115, BZT52-B10 trades compact size for higher power margin, while BZX384-C10 sacrifices voltage precision for lower unit cost-both retain identical thermal and surge performance within their respective specifications.
Availability
BZX384-B10,115 is available at Aetrix Electronics and suitable for power supply feedback, overvoltage protection, and reference voltage generation requiring stable component supply across industrial control, consumer electronics, and embedded instrumentation programs.
Supply support for BZX384-B10,115 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 semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET devices optimized for efficiency and miniaturization in mass-market electronics.
The BZX384 series belongs to Nexperia's precision Zener regulator portfolio, engineered specifically for space-constrained, low-power voltage reference and protection functions in consumer, computing, and industrial applications.
FAQ
What is the maximum steady-state current this diode can handle?
The BZX384-B10,115 is rated for continuous operation up to 250 mA forward current, but its Zener regulation function is specified at 5 mA test current. At 10 V breakdown, sustained current beyond ~30 mA exceeds its 300 mW power limit at room temperature and requires thermal derating per the datasheet's Rth(j-a) curve.
Does this part meet automotive qualification standards?
No. The BZX384-B10,115 is explicitly marked as non-automotive qualified in Nexperia's revision history. It lacks AEC-Q200 stress testing and is not recommended for safety-critical or engine compartment applications. Automotive-grade alternatives (e.g., BZX384-Q series) must be selected separately.
How does the temperature coefficient affect regulation accuracy over temperature?
With a measured +0.2 mV/K coefficient at 5 mA, the BZX384-B10,115 exhibits a +20 mV shift over a 100 °C range-approximately ±0.2 % deviation from nominal 10 V. This near-zero drift makes it suitable for applications where regulation stability across industrial temperature ranges is critical.
Can this diode be used in parallel for higher power handling?
No. Zener diodes exhibit manufacturing variance in breakdown voltage, causing current hogging when paralleled. Even matched units risk thermal runaway due to positive temperature coefficient behavior. For higher power, use a single higher-rated device or active regulation instead.
BZX384-B10,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX384
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 10 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 7 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX384-B10,115 FAQ
1.How can I place an order for BZX384-B10,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-B10,115 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 BZX384-B10,115 reliable?
The price and inventory of BZX384-B10,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-B10,115 is usually 5 days.
3.What payment methods are accepted for BZX384-B10,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-B10,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-B10,115?
BZX384-B10,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-B10,115 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 BZX384-B10,115?
For technical support, including BZX384-B10,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-B10,115 requirements.
6.How does Aetrix verify that BZX384-B10,115 is sourced from the original manufacturer or authorized distributors?
All BZX384-B10,115 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 BZX384-B10,115 meets industry standards.
7.What is the process for return or replacement of BZX384-B10,115?
All BZX384-B10,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-B10,115, 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 BZX384-B10,115 part is unused and in its original packaging.
Return procedure for BZX384-B10,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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