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Nexperia USA Inc. BZX384-C22,115
- Part No.:
- BZX384-C22,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C22,115.pdf
- Description:
- DIODE ZENER 22V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:1,238
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Product details
Overview
BZX384-C22,115 from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 22 V nominal breakdown voltage at 5 mA, 300 mW total power dissipation, and 1.1 V forward voltage at 100 mA. It serves as a precision low-power reference or clamp in power supply feedback loops, sensor biasing, and overvoltage protection circuits.
For engineers reviewing the BZX384-C22,115 datasheet, BZX384-C22,115 pinout, BZX384-C22,115 application, or BZX384-C22,115 equivalent, key selection considerations include its ±5 % VZ tolerance, 250 mA maximum forward current, 1.25 A non-repetitive peak reverse current, and thermal resistance of 110 K/W from junction to solder point.
Technical Context
This discrete Zener diode operates in reverse-biased breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its differential resistance of 250 Ω at IZ = 5 mA and temperature coefficient of +15.4 mV/K ensure predictable regulation behavior in mid-voltage applications.
The device features a cathode-anode two-terminal structure with marking bar indicating cathode polarity, optimized for surface-mount reflow assembly on FR4 PCBs. Its 415 K/W junction-to-ambient thermal resistance in free air reflects its low-power SMD construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (nominal) | 22 V - Stable regulation voltage at 5 mA test current, used for reference generation and clamping |
| Tolerance | ±5 % - Specifies allowable deviation from nominal 22 V, defining accuracy band for design margining |
| Ptot | 300 mW - Maximum continuous power dissipation at Tamb ≤ 25 °C on standard FR4 PCB |
| IF max | 250 mA - Absolute maximum forward current before permanent damage occurs |
| IZSM | 1.25 A - Non-repetitive peak reverse surge current capability (100 μs pulse, Tj = 25 °C) |
| rdif | 250 Ω - Dynamic impedance at IZ = 5 mA; lower values indicate tighter regulation under load variation |
| SZ | +15.4 mV/K - Positive temperature coefficient means VZ increases ~15.4 mV per Kelvin rise in junction temperature |
Pinout & Package
Package: SOD323 (SC-76), 2-pin surface-mount plastic package with cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal during placement |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-bias polarity required for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMD packaging | SOD323 footprint enables high-density PCB layouts and automated assembly compatibility |
| Controlled VZ tolerance | ±5 % ensures predictable clamping thresholds without requiring post-production trimming |
| Thermal performance | Rth(j-sp) = 110 K/W allows reliable operation with minimal heatsinking on standard PCB copper |
| Surge robustness | 40 W non-repetitive peak reverse power dissipation supports transient overvoltage suppression |
| Stable temperature behavior | +15.4 mV/K coefficient enables predictable drift compensation in temperature-critical references |
Applications
| Power Supply Feedback | Sensor Biasing |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or buck-derived DC-DC converters via optocoupler feedback loop. IC Role / Device Role / Timing Role: Provides precise 22 V reference to TL431 or similar shunt regulator IC, setting secondary-side output voltage threshold. Use Value: Enables ±5 % output regulation accuracy without external trimming, leveraging stable VZ and low rdif. |
Use Scenario: Supplying stable bias voltage to analog sensor elements such as RTDs or bridge-based pressure transducers. IC Role / Device Role / Timing Role: Acts as passive voltage reference source for excitation circuitry, replacing higher-cost active references. Use Value: Delivers 22 V bias with <1.25 A surge immunity, supporting transient-tolerant sensor interfaces in industrial environments. |
| Overvoltage Clamp | Logic-Level Protection |
Use Scenario: Protecting microcontroller I/O pins or ADC inputs against ESD or inductive kickback exceeding 22 V. IC Role / Device Role / Timing Role: Shunts excess energy to ground when reverse voltage exceeds 22 V, limiting peak stress on downstream components. Use Value: Absorbs up to 40 W for 100 μs pulses while maintaining clamping within ±5 %, preventing latch-up or gate oxide damage. |
Use Scenario: Level-shifting and clamping 24 V industrial control signals to 3.3 V/5 V logic domains. IC Role / Device Role / Timing Role: Clamps negative transients and limits positive excursions to 22 V + VF, protecting interface ICs. Use Value: Combines low forward voltage (≤0.9 V @ 10 mA) with sharp knee characteristics for fast response to signal overshoot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B22,115 | ±2 % VZ tolerance vs. ±5 %; identical package, power rating, and pinout | Higher precision required in feedback loops where tighter output regulation is critical | Select when VZ accuracy > ±2 % is mandated and cost premium is acceptable |
| MMSZ5247B-7-F | 20 V nominal VZ, ±5 %, SOD-123 package, 500 mW Ptot, 30 Ω rdif | Lower voltage and higher power handling; not a direct replacement due to different VZ and package | Consider only if redesign permits 20 V reference and larger footprint; verify thermal derating on target PCB |
Compared with BZX384-B22,115, the BZX384-C22,115 trades VZ accuracy for cost efficiency in non-critical clamping roles; versus MMSZ5247B-7-F, it offers exact 22 V regulation in a smaller footprint but with higher dynamic impedance and lower power rating.
Availability
BZX384-C22,115 is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface modules, overvoltage protection circuits, and embedded system voltage monitoring requiring stable component supply and consistent parametric performance.
Supply support for BZX384-C22,115 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, with manufacturing rooted in process technology leadership and automotive-grade quality systems.
The BZX384 series belongs to Nexperia's precision Zener diode product line, engineered for low-power voltage reference and clamping in space-constrained consumer, industrial, and computing applications.
FAQ
What is the maximum reverse voltage the BZX384-C22,115 can regulate before breakdown?
The BZX384-C22,115 has a nominal Zener voltage of 22 V at 5 mA test current, with a guaranteed range of 20.8 V to 23.3 V per its ±5 % tolerance. Breakdown begins within this band and stabilizes above ~1 mA reverse current; operation below 1 mA yields unstable regulation.
Can BZX384-C22,115 be used in parallel for higher power dissipation?
No-Zener diodes exhibit negative temperature coefficients and mismatched VZ tolerances, causing current hogging and thermal runaway when paralleled. For higher power, use a single higher-rated Zener or an active shunt regulator instead.
How does ambient temperature affect the 22 V regulation voltage?
With a temperature coefficient of +15.4 mV/K, the BZX384-C22,115's VZ increases by approximately 15.4 mV per degree Celsius rise in junction temperature. At 100 °C junction temperature, VZ rises ~1.15 V above its 25 °C value, assuming linear behavior.
Is the SOD323 package compatible with standard reflow soldering profiles?
Yes-the SOD323 package is qualified for lead-free reflow soldering per JEDEC J-STD-020. Nexperia specifies a maximum peak temperature of 260 °C for 30 seconds, with ramp rates and soak profiles aligned to IPC-7095 guidelines for small-outline diodes.
BZX384-C22,115 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):
- 22 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15.4 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-C22,115 FAQ
1.How can I place an order for BZX384-C22,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C22,115 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-C22,115 reliable?
The price and inventory of BZX384-C22,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-C22,115 is usually 5 days.
3.What payment methods are accepted for BZX384-C22,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C22,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C22,115?
BZX384-C22,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C22,115 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-C22,115?
For technical support, including BZX384-C22,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C22,115 requirements.
6.How does Aetrix verify that BZX384-C22,115 is sourced from the original manufacturer or authorized distributors?
All BZX384-C22,115 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-C22,115 meets industry standards.
7.What is the process for return or replacement of BZX384-C22,115?
All BZX384-C22,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C22,115, 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-C22,115 part is unused and in its original packaging.
Return procedure for BZX384-C22,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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