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Nexperia USA Inc. BZX384-C3V3,115
- Part No.:
- BZX384-C3V3,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C3V3,115.pdf
- Description:
- DIODE ZENER 3.3V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:10,227
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Product details
Overview
BZX384-C3V3,115 from Nexperia is a 3.3 V ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) surface-mount package, rated for 300 mW total power dissipation and 6.0 A non-repetitive peak reverse current, used for precision low-power voltage reference and overvoltage protection in signal conditioning circuits.
For engineers reviewing the BZX384-C3V3,115 datasheet, BZX384-C3V3,115 pinout, BZX384-C3V3,115 application, or BZX384-C3V3,115 equivalent, this device serves as a stable 3.3 V shunt reference with 5 μA reverse current at 1 V, 95 Ω differential resistance at 5 mA, and -3.5 to 0.0 mV/K temperature coefficient - critical for biasing, clamping, and analog front-end regulation.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal working voltage of 3.3 V at 5 mA test current, exhibiting a typical differential resistance of 95 Ω and reverse current ≤5 μA at VR = 1 V. Its thermal resistance from junction to ambient is 415 K/W on FR4 PCB, limiting continuous power handling under natural convection.
The device features a cathode-anode two-terminal structure with polarity marked by a bar on the SOD323 body, optimized for low-profile PCB layouts where space-constrained voltage stabilization is required without active regulation circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 3.3 V at IZ = 5 mA - defines stable regulation point for 3.3 V rail referencing |
| Tolerance | ±5 % - allows 3.10 V to 3.50 V variation; suitable for non-critical biasing |
| Differential Resistance | 95 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Current | ≤5 μA at VR = 1 V - ensures minimal leakage in standby or high-impedance sensing nodes |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power before thermal derating |
| Non-repetitive Peak Reverse Power | 40 W for tp ≤ 100 μs - enables transient surge suppression in ESD-prone interfaces |
| Junction Temperature Range | -65 °C to +150 °C - supports operation in extended industrial environments |
Pinout & Package
Package: SOD323 (SC-76), 2-pin surface-mount plastic package with 1.35 mm × 0.85 mm footprint and 0.45 mm height; cathode identified by marking bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated voltage node; accepts reverse-bias current during Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMD packaging | SOD323 footprint enables high-density routing in space-limited consumer and IoT PCBs |
| Controlled Zener tolerance | ±5 % (C-series) balances cost and accuracy for non-precision reference applications |
| Thermal performance | Rth(j-a) = 415 K/W allows 300 mW dissipation only at Tamb ≤ 25 °C; requires layout-aware derating |
| Transient robustness | 40 W non-repetitive peak power rating supports short-duration ESD or inductive kick clamping |
| Stable temperature coefficient | -3.5 to 0.0 mV/K range minimizes drift across -65 °C to +150 °C operating range |
Applications
| Power Supply Rail Clamping | ADC Reference Stabilization |
|---|---|
|
Use Scenario: Protecting 3.3 V microcontroller I/O pins from voltage overshoot during hot-plug or ESD events. IC Role / Device Role / Timing Role: Shunt clamping element placed between I/O line and ground to divert transients above 3.3 V. Use Value: Limits voltage excursion to ≤3.5 V (max Zener) with <5 μA leakage at 1 V, preserving signal integrity without loading source. |
Use Scenario: Providing stable 3.3 V reference for 12-bit SAR ADC in battery-powered sensor node. IC Role / Device Role / Timing Role: Low-current Zener reference replacing higher-power LDO where ultra-low quiescent current is critical. Use Value: Delivers 3.3 V ±5 % with 95 Ω dynamic impedance, enabling <0.1 % full-scale error contribution at 100 μA load. |
| Op-Amp Biasing Network | LED Current Regulation |
|
Use Scenario: Setting common-mode voltage for rail-to-rail input op-amp in single-supply 3.3 V data acquisition circuit. IC Role / Device Role / Timing Role: Passive voltage divider anchor point ensuring precise mid-rail bias independent of supply ripple. Use Value: Maintains 3.3 V reference with <0.5 mV/°C drift over -40 °C to +85 °C, reducing offset drift in precision amplification. |
Use Scenario: Controlling forward current in indicator LED string powered from variable 5 V USB source. IC Role / Device Role / Timing Role: Shunt regulator establishing fixed 3.3 V drop across series resistor to set LED current. Use Value: Enables constant 10 mA LED drive with ±5 % current tolerance using 180 Ω resistor, eliminating need for active current source. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5226BS-7-F | 3.3 V ±5 %, SOT-23 package, 200 mW Ptot, 100 Ω rdif at 20 mA | Larger footprint and higher thermal resistance (500 K/W); lower power rating limits sustained clamp duty cycle | Prefer when existing SOT-23 land pattern must be reused and 300 mW dissipation is not required |
| BZX84-C3V3,215 | 3.3 V ±5 %, SOT-23 package, 300 mW Ptot, 95 Ω rdif at 5 mA - identical electrical specs | Same Zener characteristics but larger SOT-23 footprint increases board area by 3× vs SOD323 | Choose only if mechanical compatibility with legacy SOT-23 assembly process outweighs miniaturization benefit |
Compared with MMBZ5226BS-7-F and BZX84-C3V3,215, the BZX384-C3V3,115 delivers identical 3.3 V regulation performance in a 40 % smaller footprint and 17 % lower thermal resistance, making it optimal for next-generation compact designs where PCB real estate and thermal margin are constrained.
Availability
BZX384-C3V3,115 is available at Aetrix Electronics and suitable for power supply clamping, ADC reference stabilization, op-amp biasing, and LED current regulation requiring stable component supply with consistent ±5 % Zener tolerance and SOD323 mounting compatibility.
Supply support for BZX384-C3V3,115 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 focused on high-volume, high-reliability discrete and logic devices, delivering energy-efficient solutions for automotive, industrial, and consumer markets.
The BZX384 series belongs to Nexperia's precision Zener regulator portfolio, engineered for low-power voltage reference and transient suppression in space-constrained, cost-sensitive applications where SMD miniaturization and tight tolerance bands are essential.
FAQ
What is the maximum continuous reverse current for reliable long-term operation?
The BZX384-C3V3,115 is rated for 250 mA maximum forward current, but its continuous reverse (Zener) current is limited by power dissipation: at 25 °C ambient, 300 mW / 3.3 V ≈ 91 mA maximum DC Zener current. Exceeding this without thermal derating risks junction overheating beyond 150 °C.
Can this diode replace a 3.3 V LDO in low-current applications?
Yes - when load current is ≤100 μA and supply ripple is minimal, the BZX384-C3V3,115 provides adequate 3.3 V reference stability with <5 μA leakage at 1 V and 95 Ω dynamic impedance. However, it lacks current-limiting or dropout regulation, so it cannot handle variable loads like an LDO.
How does the ±5 % tolerance affect accuracy in a 12-bit ADC reference application?
At 3.3 V full scale, ±5 % tolerance introduces ±165 mV absolute error, corresponding to ±204 LSBs in a 12-bit (4096-step) system. For sub-LSB accuracy, external trimming or calibration is required; the diode serves best as a coarse reference or clamping element.
Is the SOD323 package compatible with standard reflow soldering profiles?
Yes - Nexperia specifies a reflow footprint matching JEDEC J-STD-020, with peak temperature up to 260 °C for ≤30 seconds. The 0.45 mm height and 1.35 mm × 0.85 mm pad layout (per Figure 12) ensure reliable solder joint formation using Type 3 solder paste and standard convection reflow.
BZX384-C3V3,115 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):
- 3.3 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 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-C3V3,115 FAQ
1.How can I place an order for BZX384-C3V3,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C3V3,115 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-C3V3,115 reliable?
The price and inventory of BZX384-C3V3,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-C3V3,115 is usually 5 days.
3.What payment methods are accepted for BZX384-C3V3,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C3V3,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C3V3,115?
BZX384-C3V3,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C3V3,115 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-C3V3,115?
For technical support, including BZX384-C3V3,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C3V3,115 requirements.
6.How does Aetrix verify that BZX384-C3V3,115 is sourced from the original manufacturer or authorized distributors?
All BZX384-C3V3,115 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-C3V3,115 meets industry standards.
7.What is the process for return or replacement of BZX384-C3V3,115?
All BZX384-C3V3,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C3V3,115, 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-C3V3,115 part is unused and in its original packaging.
Return procedure for BZX384-C3V3,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-C3V3,115 Tags
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