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Nexperia USA Inc. BZX384-C20,115
- Part No.:
- BZX384-C20,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C20,115.pdf
- Description:
- DIODE ZENER 20V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:116,715
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Product details
Overview
BZX384-C20,115 from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 20 V nominal breakdown voltage at 5 mA, 300 mW total power dissipation, and 600 Ω maximum differential resistance - used for precision low-power voltage reference and overvoltage clamping in sensor signal conditioning circuits.
For engineers reviewing the BZX384-C20,115 datasheet, BZX384-C20,115 pinout, BZX384-C20,115 application, or BZX384-C20,115 equivalent, this page delivers verified Zener parameters, cathode/anode terminal mapping, thermal resistance values, reverse current limits at 18.8 V, and direct alternatives with tolerance and temperature coefficient differences.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable output by conducting reverse current above its specified Zener voltage (VZ = 18.8 V to 21.2 V at IZ = 5 mA). Its differential resistance of ≤600 Ω ensures minimal voltage variation under load changes up to 250 mA forward current.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it features Rth(j-a) = 415 K/W and Rth(j-sp) = 110 K/W, enabling reliable operation up to 150 °C junction temperature while sustaining non-repetitive 40 W surge pulses (tp = 100 μs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage | 18.8 V to 21.2 V at IZ = 5 mA - defines regulated output range under nominal bias |
| Power Dissipation | 300 mW at Tamb ≤ 25 °C - sets continuous DC power limit on standard FR4 PCB |
| Differential Resistance | ≤600 Ω at IZ = 5 mA - determines output impedance and regulation sensitivity to current shifts |
| Reverse Current | ≤55 μA at VR = 15.2 V - specifies leakage before knee conduction begins |
| Temperature Coefficient | +0.05 mV/K at IZ = 5 mA - quantifies VZ drift per degree Celsius near nominal operating point |
| Forward Voltage | 0.9 V at IF = 10 mA - defines anode-cathode drop during forward conduction |
| Non-repetitive Peak Power | 40 W for tp ≤ 100 μs - supports transient overvoltage suppression without failure |
Pinout & Package
SOD323 (SC-76) plastic surface-mounted package with 2 leads; marking bar denotes cathode end; footprint compatible with reflow and wave soldering per Nexperia design guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; carries reverse current during Zener conduction |
| 2 | Anode (A) | Connected to circuit ground or lower-potential rail; completes bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % VZ tolerance | Enables cost-optimized voltage referencing where tight regulation is not required |
| Low-profile SOD323 package | Supports high-density PCB layouts with 1.35 mm × 0.85 mm footprint and 0.45 mm height |
| 40 W surge capability | Provides robust ESD and transient immunity without external TVS supplementation |
| 150 °C max junction temperature | Allows deployment in thermally constrained industrial environments without derating |
| 110 K/W junction-to-solder-point Rth | Ensures efficient heat transfer to PCB copper, critical for sustained 300 mW operation |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing reference voltage for analog front-end amplifiers in temperature and pressure transducers. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 20 V bias to op-amp rails and ADC reference inputs. Use Value: Maintains <±1 % output stability across -40 °C to +85 °C ambient using its +0.05 mV/K coefficient and low 55 μA leakage at 15.2 V. |
Use Scenario: Clamping induced surges on USB VBUS lines during hot-plug events. IC Role / Device Role / Timing Role: Passive overvoltage clamp limiting VBUS to ≤21.2 V during 40 W/100 μs transients. Use Value: Absorbs energy without latch-up or parametric shift, leveraging 40 W non-repetitive rating and 250 mA peak forward current capability. |
| Low-Power IoT Node Voltage Reference | Automotive Body Control Module (Non-Automotive Qualified) |
Use Scenario: Generating stable supply for ultra-low-power microcontrollers in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Low-quiescent-current Zener reference replacing linear regulators in sleep-mode power domains. Use Value: Draws only 55 μA leakage at 15.2 V, extending coin-cell life while delivering 20 V ±5 % accuracy at 10 μA–5 mA operating range. |
Use Scenario: Providing auxiliary 20 V rail for interior lighting drivers in non-safety-critical cabin modules. IC Role / Device Role / Timing Role: Secondary voltage clamp protecting LED driver ICs from load-dump-induced spikes. Use Value: Withstands 150 °C junction temperature and 600 Ω dynamic impedance, ensuring consistent clamping during repeated 12 V system transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B20,115 | ±2 % VZ tolerance (19.6 V–20.4 V), lower 150 Ω rdif, +0.2 mV/K tempco | Better regulation stability in temperature-varying environments; higher cost | Select when tighter voltage accuracy and lower dynamic impedance outweigh cost sensitivity |
| MMSZ4684T1G | ±5 % VZ (19.0 V–21.0 V), 350 mW Ptot, 500 Ω rdif, TO-236AB package | Larger footprint; higher thermal resistance (500 K/W); same surge rating | Choose if legacy TO-236 layout compatibility is required and board space permits larger package |
Compared with BZX384-C20,115, the BZX384-B20,115 offers improved regulation precision and thermal coefficient at higher cost, while MMSZ4684T1G provides identical tolerance in a less space-efficient package with inferior thermal performance - making the original optimal for compact, cost-sensitive, thermally managed designs.
Availability
BZX384-C20,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB power protection circuits, and low-power IoT reference designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX384-C20,115 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 regulator portfolio, engineered specifically for space-constrained, low-power voltage reference and clamping applications in industrial and consumer electronics - not qualified for automotive use.
FAQ
What is the maximum reverse voltage before breakdown for BZX384-C20,115?
The guaranteed minimum breakdown voltage is 18.8 V at 5 mA test current, with upper limit 21.2 V. At 15.2 V reverse bias, leakage remains ≤55 μA - confirming no significant conduction occurs below the specified VZ window. This threshold is validated per IEC 60134 limiting values and confirmed in Table 8 of the datasheet.
Can BZX384-C20,115 be used in parallel for higher power handling?
No - Zener diodes exhibit negative temperature coefficients and mismatched VZ tolerances, causing current hogging and thermal runaway when paralleled. The device is rated for 300 mW continuous dissipation on FR4 PCB; higher power requires active regulation or discrete heat sinking, not parallel connection.
Is BZX384-C20,115 suitable for automotive applications?
No - this part is explicitly marked as non-automotive qualified in the revision history (Rev. 4, January 2023). It lacks AEC-Q101 qualification, automotive temperature grading (-40 °C to +125 °C), and automotive-specific reliability testing. Nexperia offers separate -Q qualified variants for such use cases.
How does the SOD323 package affect thermal performance?
The SOD323 package delivers Rth(j-a) = 415 K/W in free air and Rth(j-sp) = 110 K/W to solder point on FR4 PCB. This means 300 mW dissipation raises junction temperature by ~33 °C above ambient when properly mounted - well within the 150 °C absolute maximum, provided copper area and airflow meet Nexperia's footprint recommendations.
BZX384-C20,115 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):
- 20 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 14 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-C20,115 FAQ
1.How can I place an order for BZX384-C20,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C20,115 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-C20,115 reliable?
The price and inventory of BZX384-C20,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-C20,115 is usually 5 days.
3.What payment methods are accepted for BZX384-C20,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C20,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C20,115?
BZX384-C20,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C20,115 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-C20,115?
For technical support, including BZX384-C20,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C20,115 requirements.
6.How does Aetrix verify that BZX384-C20,115 is sourced from the original manufacturer or authorized distributors?
All BZX384-C20,115 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-C20,115 meets industry standards.
7.What is the process for return or replacement of BZX384-C20,115?
All BZX384-C20,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C20,115, 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-C20,115 part is unused and in its original packaging.
Return procedure for BZX384-C20,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-C20,115 Tags
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