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Nexperia USA Inc. BZX384-B3V0,115
- Part No.:
- BZX384-B3V0,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-B3V0,115.pdf
- Description:
- DIODE ZENER 3V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:35,381
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Product details
Overview
BZX384-B3V0,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 3.0 V nominal breakdown at 5 mA, with 300 mW total power dissipation and 600 Ω maximum differential resistance - used for precision low-power voltage reference and overvoltage clamping in sensor biasing, LDO feedback networks, and microcontroller I/O protection circuits.
For engineers reviewing the BZX384-B3V0,115 datasheet, BZX384-B3V0,115 pinout, BZX384-B3V0,115 application, or BZX384-B3V0,115 equivalent, this page delivers verified electrical parameters, thermal behavior under PCB mounting conditions, cathode/anode terminal mapping, and direct alternatives for 3.0 V Zener regulation in space-constrained designs.
Technical Context
This device operates as a two-terminal silicon Zener diode optimized for stable reverse-bias voltage regulation at low currents (IZ = 5 mA), with a temperature coefficient of –3.5 mV/K and reverse current ≤10 μA at VR = 2.4 V. Its junction-to-ambient thermal resistance is 415 K/W on FR4 PCB, limiting continuous dissipation to 300 mW at Tamb ≤ 25 °C.
The non-repetitive peak reverse power dissipation reaches 40 W for 100 μs pulses, enabling transient surge suppression. Differential resistance remains ≤600 Ω across the operating range, ensuring tight regulation stability under varying load conditions typical in analog front-end and power management subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 2.94 V to 3.06 V at IZ = 5 mA - ensures ±2 % regulation accuracy for 3.0 V reference applications |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - defines maximum continuous DC power handling on standard FR4 PCB |
| Differential Resistance (rdif) | ≤600 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | ≤10 μA at VR = 2.4 V - guarantees low leakage in high-impedance bias networks |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - sets forward conduction loss in ESD protection or polarity-sensitive clamp configurations |
| Junction Temperature (Tj) | –65 °C to +150 °C - supports operation in industrial and extended-temperature environments |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 μs - enables robust transient voltage suppression without device failure |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic package with 2 leads, 1.35 mm × 0.85 mm footprint, 0.45 mm height, and cathode marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential rail; establishes reference polarity for regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % voltage tolerance | Enables tighter regulation than ±5 % variants, reducing calibration overhead in precision analog circuits |
| 300 mW power rating | Supports stable DC regulation in low-current applications without heatsinking on standard PCBs |
| 415 K/W junction-to-ambient Rth | Defines thermal derating curve: usable power drops to ~150 mW at Tamb = 70 °C |
| 600 Ω max differential resistance | Minimizes output voltage shift under ±1 mA load variation, critical for feedback loop stability |
| Cathode-bar marking | Ensures unambiguous orientation during automated placement and visual inspection on SMT lines |
Applications
| Industrial Sensor Biasing | Microcontroller I/O Protection |
|---|---|
Use Scenario: Providing stable 3.0 V reference for RTD or thermistor signal conditioning circuits in programmable logic controllers. IC Role / Device Role / Timing Role: Zener voltage reference source establishing precise bias point for op-amp input stages. Use Value: ±2 % tolerance and low 10 μA leakage maintain ADC input accuracy within 0.1 % full-scale error across temperature. |
Use Scenario: Clamping GPIO pins against ESD and supply rail overshoot in battery-powered IoT edge nodes. IC Role / Device Role / Timing Role: Bidirectional transient suppressor leveraging forward conduction (0.9 V) and reverse Zener action (3.0 V). Use Value: 40 W non-repetitive peak power rating absorbs 8 kV HBM ESD events without degradation. |
| LDO Feedback Divider | Low-Power Reference Generator |
Use Scenario: Setting output voltage of adjustable low-dropout regulators in portable medical devices. IC Role / Device Role / Timing Role: Precision shunt reference replacing higher-cost bandgap ICs in cost-sensitive power rails. Use Value: 600 Ω differential resistance ensures <10 mV output shift under 100 μA divider current variation. |
Use Scenario: Generating stable 3.0 V reference for real-time clock (RTC) backup circuits in energy-harvesting systems. IC Role / Device Role / Timing Role: Low-quiescent-current voltage reference maintaining timing accuracy during brownout conditions. Use Value: 300 mW rating allows operation at 100 μA bias current with >10-year MTBF under continuous use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5226BS-7-F | 3.0 V ±5 %, 200 mW Ptot, SOT-23 package | Higher thermal resistance (500 K/W), lower power rating limits sustained current capability | Select when board space permits larger SOT-23 and ±5 % tolerance is acceptable |
| BZX384-C3V0,115 | 3.0 V ±5 %, same 300 mW rating and SOD323 package | Looser tolerance increases reference uncertainty but improves cost and availability | Select for non-critical biasing where calibration is performed downstream |
Compared with BZX384-B3V0,115, MMBZ5226BS-7-F trades package compatibility and power headroom for wider tolerance, while BZX384-C3V0,115 retains identical form factor and thermal performance but relaxes regulation accuracy - making the B variant optimal for designs requiring ±2 % stability without layout change.
Availability
BZX384-B3V0,115 is available at Aetrix Electronics and suitable for industrial sensor biasing, microcontroller I/O protection, LDO feedback networks, and low-power reference generation requiring stable component supply across production lifecycles.
Supply support for BZX384-B3V0,115 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 solutions with focus on efficiency, reliability, and miniaturization for automotive, industrial, and consumer markets.
The BZX384 series targets compact, low-power voltage regulation in space-constrained applications - designed specifically for stable Zener reference and clamping functions in modern SMT-based electronics where precision, thermal predictability, and small-footprint packaging are essential.
FAQ
What is the maximum continuous reverse current this Zener can handle at 3.0 V?
The BZX384-B3V0,115 is not rated for continuous reverse current at its nominal Zener voltage. Its specified test condition is IZ = 5 mA for VZ measurement. Continuous operation above 5 mA requires thermal derating per the 300 mW Ptot limit and 415 K/W Rth(j-a); at Tamb = 25 °C, maximum sustainable IZ is ~100 mA, but practical design limits are typically ≤20 mA to ensure long-term reliability and minimal voltage drift.
Can this diode be used in series for higher voltage regulation?
Yes, multiple BZX384-B3V0,115 diodes may be connected in series to achieve higher regulated voltages (e.g., three in series yield ~9.0 V), but tolerance stacking must be considered: ±2 % per device results in ±3.5 % total tolerance for three units. Differential resistance also sums linearly, increasing overall output impedance and reducing regulation stiffness.
How does the temperature coefficient affect regulation accuracy over –40 °C to +85 °C?
With SZ = –3.5 mV/K, the BZX384-B3V0,115 exhibits a total VZ shift of approximately –175 mV across a 50 K temperature span. At 3.0 V nominal, this represents –5.8 % deviation - meaning regulation at +85 °C drops to ~2.82 V. Designs requiring tighter thermal stability must include compensation or select higher-VZ Zeners with positive or near-zero coefficients.
Is this part suitable for automotive applications?
No. The BZX384-B3V0,115 is explicitly designated as non-automotive qualified per Nexperia's revision history (Rev. 4, January 2023). It lacks AEC-Q101 qualification, automotive-grade screening, and guaranteed operation over the full –40 °C to +125 °C junction range required for automotive ECUs. Automotive alternatives are available in the BZX384-Q series.
BZX384-B3V0,115 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):
- 3 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1 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-B3V0,115 FAQ
1.How can I place an order for BZX384-B3V0,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-B3V0,115 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-B3V0,115 reliable?
The price and inventory of BZX384-B3V0,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-B3V0,115 is usually 5 days.
3.What payment methods are accepted for BZX384-B3V0,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-B3V0,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-B3V0,115?
BZX384-B3V0,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-B3V0,115 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-B3V0,115?
For technical support, including BZX384-B3V0,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-B3V0,115 requirements.
6.How does Aetrix verify that BZX384-B3V0,115 is sourced from the original manufacturer or authorized distributors?
All BZX384-B3V0,115 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-B3V0,115 meets industry standards.
7.What is the process for return or replacement of BZX384-B3V0,115?
All BZX384-B3V0,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-B3V0,115, 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-B3V0,115 part is unused and in its original packaging.
Return procedure for BZX384-B3V0,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-B3V0,115 Tags
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