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Nexperia USA Inc. BZX84W-C11-QF
- Part No.:
- BZX84W-C11-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C11-QF.pdf
- Description:
- DIODE ZENER 11V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:7,245
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Product details
Overview
BZX84W-C11-QF from Nexperia is a ±5 % tolerance Zener voltage regulator diode with 11 V nominal breakdown voltage, 150 Ω typical differential resistance at 5 mA, and 7.4 mV/K temperature coefficient, housed in an AEC-Q101-qualified SOT323 (SC-70) package for automotive power rail stabilization.
For engineers reviewing the BZX84W-C11-QF datasheet, BZX84W-C11-QF pinout, BZX84W-C11-QF application, or BZX84W-C11-QF equivalent, this device serves as a precision shunt reference in low-power voltage regulation, ESD-protected bias networks, and high-frequency feedback loops where thermal stability and compact footprint are critical.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable 11 V across its terminals under varying load currents up to 200 mA, with 100 nA reverse leakage at VR = 8 V and 0.9 V forward voltage at IF = 10 mA.
Its thermal resistance of 455 K/W (junction-to-ambient, FR4 PCB) and 150 °C maximum junction temperature support operation in automotive ambient ranges (−55 °C to +150 °C), while its 2.5 pF capacitance at 1 MHz enables use in noise-sensitive analog monitoring circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 11 V - precise shunt regulation point for 12 V rail clamping or reference generation |
| Tolerance | ±5 % - ensures predictable voltage margin in automotive-grade designs per AEC-Q101 |
| Differential Resistance | 150 Ω max at IZ = 5 mA - defines output impedance and load regulation error |
| Reverse Leakage Current | 100 nA at VR = 8 V - minimizes standby power loss in always-on circuits |
| Total Power Dissipation | 275 mW - supports continuous regulation in space-constrained SOT323 layout |
| Package | SOT323 (SC-70) - 2.2 mm × 1.35 mm surface-mount footprint compatible with automated reflow |
| Temperature Coefficient | +7.4 mV/K - positive drift enables compensation in multi-diode reference strings |
Pinout & Package
Three-terminal SOT323 (SC-70) plastic surface-mount package with exposed pad not electrically connected; optimized for thermal dissipation on single-sided FR4 PCBs with standard solder footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward current entry point; connects to lower-potential node in shunt configuration |
| 2 | Not Connected (n.c.) | Internally isolated terminal; must remain unconnected in PCB layout |
| 3 | Cathode (K) | Zener breakdown terminal; ties to regulated voltage node and current-limiting resistor |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood and infotainment systems requiring extended temperature reliability |
| Low dynamic impedance | 150 Ω typical at 5 mA enables tight regulation under transient load steps |
| High-frequency response | 2.5 pF junction capacitance allows stable operation in >10 MHz feedback paths |
| Compact SOT323 footprint | 2.2 mm × 1.35 mm area reduces PCB real estate vs. larger SOD-323 or DO-35 packages |
| Controlled temperature coefficient | +7.4 mV/K supports predictable drift behavior in temperature-compensated references |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Stabilizing 12 V supply rails for microcontroller I/O buffers and CAN transceiver biasing in door module electronics. IC Role / Device Role / Timing Role: Shunt voltage reference providing overvoltage protection and clean reference for ADC input scaling. Use Value: Maintains 11 V clamp during load dump transients up to 40 W peak, preventing downstream IC latch-up. |
Use Scenario: Biasing precision op-amps in 4–20 mA loop transmitter front-ends operating in factory-floor environments. IC Role / Device Role / Timing Role: Low-drift Zener reference establishing stable gain-setting node for current-output DACs. Use Value: Delivers <±0.5 % voltage error over −40 °C to +85 °C due to matched temperature coefficient and low leakage. |
| Consumer Audio Power Sequencing | Medical Wearable Battery Monitoring |
Use Scenario: Enabling controlled power-up sequencing between analog audio codec and digital DSP in portable speakers. IC Role / Device Role / Timing Role: Voltage supervisor element triggering reset logic when main rail exceeds 11.5 V threshold. Use Value: Achieves sub-10 µs response to overvoltage events via low-capacitance junction, avoiding audio pop artifacts. |
Use Scenario: Providing accurate reference for lithium-ion cell voltage measurement in Bluetooth-enabled glucose monitors. IC Role / Device Role / Timing Role: Precision shunt reference feeding SAR ADC reference input in ultra-low-power sleep mode. Use Value: Draws only 100 nA leakage at 8 V reverse bias, extending battery life beyond 12 months per charge cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5240BLT1G | 10 V nominal, ±5 %, 17 Ω rdif at 20 mA, SOT-23 package | Lower Zener voltage and tighter rdif suit higher-current regulation but lacks AEC-Q101 certification | Select when board-level surge immunity is less critical than regulation accuracy at >10 mA loads |
| Vishay BZX84-C10-TP | 10 V nominal, ±5 %, 200 Ω rdif at 5 mA, same SOT323 footprint | 1 V lower regulation voltage and higher impedance limit use in precision 11 V reference chains | Choose only if system tolerances allow 10 V instead of 11 V and automotive qualification is not required |
Compared with MMBZ5240BLT1G and BZX84-C10-TP, BZX84W-C11-QF uniquely combines 11 V regulation, AEC-Q101 qualification, and 150 Ω impedance in SOT323-making it the sole option for automotive 12 V rail clamping where voltage, reliability, and footprint are jointly constrained.
Availability
BZX84W-C11-QF is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor transmitters, consumer audio sequencers, and medical wearable battery monitors requiring stable component supply across extended temperature ranges.
Supply support for BZX84W-C11-QF 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 leadership in automotive-qualified components and advanced packaging.
The BZX84W-Q series belongs to Nexperia's AEC-Q101-certified Zener diode product line, engineered specifically for robust voltage regulation in automotive power domains and industrial signal conditioning where long-term parametric stability is mandatory.
FAQ
What is the maximum reverse current at 8 V for BZX84W-C11-QF?
The maximum reverse leakage current for BZX84W-C11-QF is 100 nA when reverse voltage is held at 8 V, measured at Tj = 25 °C. This value is specified in Table 7 of the datasheet and reflects the diode's low standby power consumption in shunt regulator configurations.
Can BZX84W-C11-QF be used in place of a 12 V Zener diode?
No-BZX84W-C11-QF has a nominal Zener voltage of 11 V (10.4–11.6 V range at ±5 % tolerance), not 12 V. Substituting it for a true 12 V Zener would result in undershoot of the target regulation point by ~1 V, potentially compromising circuit functionality in voltage-critical applications.
Is pin 2 electrically functional in the SOT323 package?
No-pin 2 is explicitly designated "n.c." (not connected) in Table 2 of the datasheet. It is an internal dummy lead with no electrical connection to the die; PCB traces must leave this pad unconnected to avoid unintended shorts or parasitic coupling.
How does the +7.4 mV/K temperature coefficient affect circuit design?
The positive temperature coefficient means the Zener voltage increases by approximately 7.4 mV per degree Celsius rise in junction temperature. Designers must account for this drift in precision references-e.g., by pairing with negative-TC components or limiting self-heating through current derating below 100 mA.
BZX84W-C11-QF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84W-Q
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5.45%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84W-C11-QF FAQ
1.How can I place an order for BZX84W-C11-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C11-QF 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 BZX84W-C11-QF reliable?
The price and inventory of BZX84W-C11-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-C11-QF is usually 5 days.
3.What payment methods are accepted for BZX84W-C11-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C11-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C11-QF?
BZX84W-C11-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C11-QF 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 BZX84W-C11-QF?
For technical support, including BZX84W-C11-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C11-QF requirements.
6.How does Aetrix verify that BZX84W-C11-QF is sourced from the original manufacturer or authorized distributors?
All BZX84W-C11-QF 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 BZX84W-C11-QF meets industry standards.
7.What is the process for return or replacement of BZX84W-C11-QF?
All BZX84W-C11-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C11-QF, 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 BZX84W-C11-QF part is unused and in its original packaging.
Return procedure for BZX84W-C11-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C11-QF Tags
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MM5Z5V1ST1G
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