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Nexperia USA Inc. BZX384-C11-QX
- Part No.:
- BZX384-C11-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C11-QX.pdf
- Description:
- DIODE ZENER 11V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,536
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Product details
Overview
BZX384-C11-QX 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 qualified to AEC-Q101 for automotive voltage reference and overvoltage protection circuits.
For engineers reviewing the BZX384-C11-QX datasheet, BZX384-C11-QX pinout, BZX384-C11-QX application, or BZX384-C11-QX equivalent, this page delivers verified Zener parameters, thermal resistance data, reverse current behavior at 10.4 V, differential resistance of 150 Ω, and cathode/anode terminal mapping for PCB layout and circuit validation.
Technical Context
This device operates as a two-terminal shunt voltage reference, maintaining stable 11 V regulation under reverse-biased conditions with specified test current of 5 mA. Its temperature coefficient is +5.4 mV/K at IZ = 5 mA, indicating positive drift with junction temperature rise.
The diode exhibits non-repetitive peak reverse power dissipation up to 40 W for 100 μs pulses and supports ambient operation from −65 °C to +150 °C. Junction-to-ambient thermal resistance is 415 K/W on standard FR4 PCB, limiting continuous power handling in still-air environments.
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 |
| Total Power Dissipation Ptot | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power on standard FR4 PCB |
| Differential Resistance rdif | 150 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Current IR | 20 μA max at VR = 8.5 V - specifies leakage level below knee voltage, critical for low-power bias networks |
| Forward Voltage VF | 0.9 V max at IF = 10 mA - defines conduction threshold in forward direction for polarity verification |
| Junction Temperature Tj | 150 °C max - constrains thermal design margin when operating near Ptot limit |
| Non-repetitive Peak Power | 40 W for tp = 100 μs - enables transient overvoltage clamping in surge protection |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package with 2 leads; cathode marked by bar on top surface; footprint per Figure 12 (reflow) and Figure 13 (wave soldering) in datasheet Rev. 1.
| 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 ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| ±5 % voltage tolerance | Cost-optimized regulation accuracy suitable for non-critical bias and clamp functions |
| 40 W non-repetitive surge rating | Enables use in transient voltage suppression without external TVS devices |
| Low thermal resistance to solder point | Rth(j-sp) = 110 K/W - improves pulse power handling via direct heat transfer to PCB copper |
| Small SOD323 footprint | 1.8 mm × 1.35 mm body size - supports high-density layout in space-constrained modules |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 11 V reference for microcontroller ADC input scaling in door module power management. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise analog measurement baseline. Use Value: Enables consistent 12-bit ADC readings across −40 °C to +125 °C ambient with <±10 mV drift due to known +5.4 mV/K coefficient. |
Use Scenario: Clamping amplifier supply rails against 12 V bus transients in pressure sensor front-end. IC Role / Device Role / Timing Role: Overvoltage protector limiting rail excursion to 11.6 V during load dump events. Use Value: Absorbs 40 W surges for 100 μs without failure, eliminating need for larger TVS diodes in compact sensor housings. |
| Consumer Power Adapter Feedback | Medical Diagnostic Equipment Biasing |
Use Scenario: Setting feedback voltage threshold in secondary-side optocoupler-based regulation loop of 5 V/2 A wall adapter. IC Role / Device Role / Timing Role: Precision voltage reference defining output setpoint in isolated flyback control. Use Value: Maintains ±5 % output accuracy over line/load variation while consuming only 20 μA leakage at 8.5 V. |
Use Scenario: Generating stable bias for photodiode transimpedance amplifier in portable ultrasound probe. IC Role / Device Role / Timing Role: Low-noise DC reference source minimizing offset drift in analog front-end. Use Value: Delivers 11 V regulation with 150 Ω dynamic impedance, reducing gain error contribution to <0.2 % in 1 MΩ feedback network. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B11-Q | ±2 % tolerance (10.8 V–11.2 V), lower rdif (150 Ω → 100 Ω), same package and AEC-Q101 rating | Better regulation stability in precision feedback loops; higher cost | Select when tighter voltage control and lower dynamic impedance outweigh cost sensitivity |
| MMSZ4689T1G | ±5 % tolerance (10.45 V–11.55 V), 500 mW Ptot, SOD-123 package, no AEC-Q101 qualification | Higher power handling but lacks automotive qualification and has larger footprint (2.9 mm × 1.3 mm) | Select for industrial non-automotive designs requiring higher continuous dissipation and legacy footprint compatibility |
Compared with BZX384-C11-QX, the BZX384-B11-Q offers improved regulation accuracy and lower impedance for feedback-critical roles, while MMSZ4689T1G trades automotive qualification and miniaturization for higher power capacity and broader industry adoption.
Availability
BZX384-C11-QX is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and consumer power adapter designs requiring stable component supply with AEC-Q101 compliance and SOD323 footprint consistency.
Supply support for BZX384-C11-QX 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, headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.
The BZX384-Q series belongs to Nexperia's automotive-qualified Zener diode product line, engineered specifically for robust voltage reference and clamping in harsh-environment electronic control units.
FAQ
What is the maximum reverse voltage before breakdown for BZX384-C11-QX?
The guaranteed breakdown range is 10.4 V to 11.6 V at 5 mA test current. Below 8.5 V, reverse current remains ≤20 μA - this is the practical upper limit for non-conducting operation. Operation above 11.6 V risks exceeding differential resistance limits and thermal runaway under sustained load.
Can BZX384-C11-QX be used in parallel for higher power dissipation?
No - Zener diodes exhibit negative temperature coefficients at low voltages and positive ones above ~6 V, but unit-to-unit VZ variation (±5 %) causes current hogging. Even with matched units, thermal coupling differences lead to uneven power sharing and premature failure of one device.
Is the SOD323 package compatible with standard reflow profiles?
Yes - Nexperia specifies JEDEC J-STD-020-compliant reflow for SOD323. Peak temperature must not exceed 260 °C, with time above 217 °C limited to 60–150 seconds. Figure 12 provides recommended solder land dimensions (0.6 mm × 0.5 mm pads, 0.95 mm center-to-center).
How does temperature affect regulation accuracy in automotive use?
At IZ = 5 mA, the temperature coefficient is +5.4 mV/K. Over −40 °C to +125 °C, this produces ≈0.89 V total drift (165 K × 5.4 mV/K). For 11 V nominal, that's ±4.0 % additional error beyond initial ±5 % tolerance - acceptable for non-precision biasing but insufficient for ADC references without compensation.
BZX384-C11-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX384-Q
- 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:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX384-C11-QX FAQ
1.How can I place an order for BZX384-C11-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C11-QX 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-QX reliable?
The price and inventory of BZX384-C11-QX 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-QX is usually 5 days.
3.What payment methods are accepted for BZX384-C11-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C11-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C11-QX?
BZX384-C11-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C11-QX 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-QX?
For technical support, including BZX384-C11-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C11-QX requirements.
6.How does Aetrix verify that BZX384-C11-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-C11-QX 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-QX meets industry standards.
7.What is the process for return or replacement of BZX384-C11-QX?
All BZX384-C11-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C11-QX, 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-QX part is unused and in its original packaging.
Return procedure for BZX384-C11-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-C11-QX Tags
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MM5Z5V1ST1G
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