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Nexperia USA Inc. BZX384-C11,115
- Part No.:
- BZX384-C11,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C11,115.pdf
- Description:
- DIODE ZENER 11V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:14,125
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Product details
Overview
BZX384-C11,115 from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 11 V nominal breakdown voltage at 5 mA, 300 mW total power dissipation, and 85 A non-repetitive peak reverse current. It serves as a precision low-power voltage reference or shunt regulator in power supply feedback loops, sensor biasing, and overvoltage protection circuits.
For engineers reviewing the BZX384-C11,115 datasheet, BZX384-C11,115 pinout, BZX384-C11,115 application, or BZX384-C11,115 equivalent, this page delivers verified electrical parameters, thermal behavior, cathode/anode terminal mapping, real-world use cases, and validated alternative parts with documented differences in tolerance, temperature coefficient, and dynamic impedance.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable DC voltage across its terminals under varying load or input conditions. Its ±5 % tolerance (C-series), 150 °C maximum junction temperature, and 110 K/W junction-to-solder-point thermal resistance define its placement constraints on FR4 PCBs with standard footprint.
It exhibits a positive temperature coefficient of +5.4 mV/K at IZ = 5 mA and differential resistance of ≤150 Ω, enabling predictable regulation in ambient temperatures from –65 °C to +150 °C without active thermal management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 10.4 V to 11.6 V at IZ = 5 mA - defines usable regulation window for 11 V nominal reference |
| Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - limits continuous DC current to ~27 mA at 11 V |
| Differential Resistance (rdif) | ≤150 Ω - determines output voltage deviation under ±1 mA load change |
| Reverse Current (IR) | ≤20 μA at VR = 8.8 V - ensures low leakage in standby or high-impedance sensing nodes |
| Temperature Coefficient (SZ) | +5.4 mV/K - quantifies voltage drift per degree Celsius rise at nominal operating point |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 μs - supports transient overvoltage clamping in surge events |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - relevant for polarity-check or LED-driver auxiliary paths |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package: 2-terminal, 1.35 mm × 0.85 mm body, 0.45 mm pitch, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-bias voltage applied here relative to anode |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % voltage tolerance | Enables cost-optimized regulation where tight accuracy is not required, e.g., non-critical biasing |
| 300 mW power rating | Supports stable operation in space-constrained PCB layouts without heatsinking |
| 150 °C max junction temperature | Permits deployment in industrial environments with elevated ambient temperatures |
| 415 K/W junction-to-ambient Rth | Defines derating curve: full power only below 25 °C ambient; linear reduction above |
| Marking code "DA" | Uniquely identifies BZX384-C11 variant on device body for traceability and assembly verification |
Applications
| Power Supply Feedback | Sensor Bias Reference |
|---|---|
Use Scenario: Stabilizing output voltage in adjustable linear regulators (e.g., LM317) via resistor divider connected to ADJ pin. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 11 V threshold for error amplifier comparison. Use Value: Maintains ±1.5 % output regulation over line/load variations due to stable VZ and low rdif. |
Use Scenario: Supplying fixed bias voltage to analog sensor elements (e.g., RTD bridges or photodiode amplifiers). IC Role / Device Role / Timing Role: Low-noise, low-drift DC reference source independent of supply ripple. Use Value: Delivers <20 μA leakage and +5.4 mV/K TC, minimizing sensor offset drift in 0–70 °C range. |
| Overvoltage Clamp | Microcontroller I/O Protection |
Use Scenario: Protecting downstream circuitry from transient surges exceeding 12 V on 12 V rail inputs. IC Role / Device Role / Timing Role: Fast-acting shunt clamp activated during >11.6 V excursions. Use Value: Absorbs up to 40 W for 100 μs pulses without failure, limiting peak voltage to ≤12.5 V. |
Use Scenario: Safeguarding 3.3 V or 5 V microcontroller GPIO pins against accidental 12 V miswiring. IC Role / Device Role / Timing Role: Bidirectional ESD/overvoltage suppressor when paired with series resistor. Use Value: Clamps reverse transients to <12 V while maintaining <0.9 V forward drop during normal operation. |
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-B11,115 | ±2 % tolerance, 110 Ω max rdif, +5.4 mV/K TC | Higher accuracy and lower impedance suit feedback loops demanding tighter regulation | Select when system requires <±0.2 V output variation at 5 mA and minimal load-induced droop |
| MMBZ5240BS-7-F | ±5 % tolerance, 11 V nominal, SOT-323 package, 200 mW Ptot | Lower power rating and different thermal profile limit surge handling capability | Choose only if board layout mandates SOT-323 footprint and peak power demands stay below 200 mW |
Compared with BZX384-C11,115, the BZX384-B11,115 offers tighter tolerance and lower dynamic impedance for improved regulation fidelity, while MMBZ5240BS-7-F trades 100 mW power headroom and higher thermal resistance for footprint compatibility-neither is pin-compatible without layout revision.
Availability
BZX384-C11,115 is available at Aetrix Electronics and suitable for power supply feedback networks, sensor bias references, overvoltage clamping circuits, and microcontroller I/O protection requiring stable component supply and consistent ±5 % Zener voltage performance.
Supply support for BZX384-C11,115 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 essential efficiency-enhancing components, delivering high-volume, high-reliability discrete and logic devices for automotive, industrial, and consumer markets.
The BZX384 series belongs to Nexperia's precision Zener regulator product line, engineered for low-power voltage reference and shunt regulation in compact SMD designs where cost, size, and thermal robustness are critical.
FAQ
What is the maximum continuous reverse current for BZX384-C11,115 at 25 °C ambient?
The maximum continuous reverse current is derived from Ptot = 300 mW and VZ ≈ 11 V, yielding ~27 mA. This assumes no additional thermal derating; actual safe operating current drops linearly as ambient exceeds 25 °C per the 415 K/W Rth(j-a) specification.
Can BZX384-C11,115 be used in place of a 12 V Zener diode?
No-its guaranteed breakdown range is 10.4 V to 11.6 V at 5 mA, falling short of 12 V regulation. Substituting it for a true 12 V Zener (e.g., BZX384-C12) would cause undervoltage in feedback or reference paths, risking system instability or incorrect sensor readings.
How does the +5.4 mV/K temperature coefficient affect long-term voltage stability?
At a 50 °C temperature rise (e.g., from 25 °C to 75 °C), VZ increases by ~270 mV-within the ±5 % initial tolerance band. This predictable positive drift allows compensation in precision circuits but makes it unsuitable for zero-TC applications without external correction.
Is the SOD323 package compatible with standard reflow soldering profiles?
Yes-the device is qualified for lead-free reflow per JEDEC J-STD-020. Recommended peak temperature is 260 °C for ≤30 seconds, with ramp rates ≤3 °C/s. The 0.45 mm pitch and 1.35 mm × 0.85 mm body align with IPC-7351B SOD323 land patterns shown in Figure 12 of the datasheet.
BZX384-C11,115 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):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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-C11,115 FAQ
1.How can I place an order for BZX384-C11,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C11,115 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-C11,115 reliable?
The price and inventory of BZX384-C11,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-C11,115 is usually 5 days.
3.What payment methods are accepted for BZX384-C11,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C11,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C11,115?
BZX384-C11,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C11,115 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-C11,115?
For technical support, including BZX384-C11,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C11,115 requirements.
6.How does Aetrix verify that BZX384-C11,115 is sourced from the original manufacturer or authorized distributors?
All BZX384-C11,115 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-C11,115 meets industry standards.
7.What is the process for return or replacement of BZX384-C11,115?
All BZX384-C11,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C11,115, 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-C11,115 part is unused and in its original packaging.
Return procedure for BZX384-C11,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-C11,115 Tags
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