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Nexperia USA Inc. BZX84W-C10-QF
- Part No.:
- BZX84W-C10-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C10-QF.pdf
- Description:
- DIODE ZENER 10V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:8,398
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Product details
Overview
BZX84W-C10-QF from Nexperia is a ±5% tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 10 V nominal Zener voltage at 5 mA, with 200 nA reverse current at 7 V, 275 mW total power dissipation, and qualified to AEC-Q101 for automotive use.
For engineers reviewing the BZX84W-C10-QF datasheet, BZX84W-C10-QF pinout, BZX84W-C10-QF application, or BZX84W-C10-QF equivalent, this part supports precision voltage reference, overvoltage clamping, and low-power regulation in space-constrained automotive ECUs and sensor signal conditioning circuits.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable 10 V output across load variations by conducting reverse current above its breakdown threshold. Its 150 °C maximum junction temperature and −55 °C to +150 °C ambient range support under-hood automotive deployment.
Thermal resistance from junction to ambient is 455 K/W on standard FR4 PCB, limiting continuous power handling to 275 mW at 25 °C ambient. Differential resistance is 150 Ω at 5 mA, ensuring stable regulation under moderate dynamic load shifts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.4 V to 10.6 V at IZ = 5 mA - defines tight regulation window for 10 V reference applications |
| Reverse Current (IR) | 200 nA at VR = 7 V - enables ultra-low leakage in standby or battery-backed circuits |
| Total Power Dissipation (Ptot) | 275 mW on FR4 PCB - sets maximum continuous DC power budget for thermal design |
| Differential Resistance (rdif) | 150 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Temperature Coefficient (SZ) | +6.4 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius rise in junction temperature |
| Forward Voltage (VF) | ≤ 0.9 V at IF = 10 mA - defines forward conduction loss when used in polarity protection or OR-ing |
| Junction Temperature (Tj) | −55 °C to +150 °C - confirms suitability for extended-temperature automotive environments |
Pinout & Package
Package: SOT323 (SC-70), leadless surface-mount plastic package with 3 terminals, footprint dimensions 2.2 mm × 1.35 mm × 0.95 mm (L × W × H), optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node during regulation or clamping |
| 2 | Not Connected (n.c.) | Electrically isolated internal pad; no PCB trace or solder connection required |
| 3 | Cathode (K) | Zener breakdown terminal; connects to higher-potential node to enable reverse-bias regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTGB, TST, and ESD testing per JESD22 |
| ±5% Zener voltage tolerance | Guarantees 9.4–10.6 V regulation band at 5 mA, enabling cost-effective precision without trimming |
| Low 200 nA reverse leakage at 7 V | Minimizes quiescent current draw in always-on vehicle modules such as CAN transceiver bias networks |
| SOT323 ultra-small footprint | 0.95 mm height and 2.2 mm × 1.35 mm area allow placement near ICs or sensors in compact ECU designs |
| 150 °C max junction temperature | Supports operation adjacent to power MOSFETs or microcontrollers in engine control units |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 10 V reference for LIN bus transceiver biasing and microcontroller ADC reference in BCM subassemblies. IC Role / Device Role / Timing Role: Shunt Zener regulator providing stable 10 V rail independent of input fluctuations from vehicle battery (9–16 V). Use Value: Maintains <1% reference error over temperature (−40 °C to +125 °C) due to +6.4 mV/K coefficient and AEC-Q101 thermal stability. |
Use Scenario: Clamping analog sensor output (e.g., pressure or temperature transducer) to prevent overvoltage damage to downstream op-amps. IC Role / Device Role / Timing Role: Reverse-biased voltage clamp limiting signal swing to 10.6 V maximum during ESD or load dump events. Use Value: Withstands non-repetitive 40 W surge (100 µs pulse) and exhibits only 200 nA leakage below 7 V, preserving signal integrity. |
| USB-C Power Delivery Monitoring | Smart Lighting Driver Reference |
Use Scenario: Providing 10 V reference for voltage monitoring circuitry in USB-C PD sink controllers detecting VBUS presence and level. IC Role / Device Role / Timing Role: Precision shunt reference enabling accurate 10 V threshold detection with minimal board area. Use Value: SOT323 footprint fits within tight spacing constraints near USB-C connector; 150 Ω differential resistance ensures stable reading under varying load currents. |
Use Scenario: Setting regulated bias voltage for constant-current LED driver IC feedback networks in automotive interior lighting. IC Role / Device Role / Timing Role: Zener-based reference stabilizing current-sense amplifier gain in PWM-controlled LED strings. Use Value: AEC-Q101 qualification ensures long-term stability under thermal cycling in cabin environments; 275 mW rating supports continuous operation at ambient up to 85 °C. |
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%, 350 mW Ptot, SOT-23 package, 170 Ω rdif | Higher power rating but larger SOT-23 footprint; not AEC-Q101 qualified | Select when higher continuous power margin is needed and automotive qualification is not required. |
| Vishay BZX84-C10-TP | 10 V nominal, ±5%, 250 mW Ptot, SOT-23, 150 Ω rdif, AEC-Q101 qualified | Lower power rating (250 mW vs. 275 mW); identical Zener tolerance and thermal coefficient | Choose if supply chain diversification is prioritized and 25 mW lower dissipation is acceptable in thermal layout. |
Compared with MMBZ5240BLT1G, BZX84W-C10-QF offers tighter thermal compliance and smaller footprint but lower absolute power; versus BZX84-C10-TP, it delivers +25 mW headroom and identical automotive qualification with identical regulation performance.
Availability
BZX84W-C10-QF is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and USB-C power monitoring systems requiring stable component supply with full traceability and lifecycle continuity.
Supply support for BZX84W-C10-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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
BZX84W-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for robust voltage regulation and clamping in harsh automotive environments where space, reliability, and thermal resilience are critical.
FAQ
What is the maximum reverse voltage before breakdown for BZX84W-C10-QF?
The nominal Zener voltage is 10 V with ±5% tolerance, meaning breakdown occurs between 9.4 V and 10.6 V at 5 mA test current. The device is not rated for sustained reverse voltage above 10.6 V; operation beyond this risks thermal runaway unless current is strictly limited by external series resistance.
Can BZX84W-C10-QF be used in forward-bias mode?
Yes - its forward voltage is ≤0.9 V at 10 mA, making it suitable for polarity protection or low-drop rectification in low-current paths. However, it is not optimized for continuous forward conduction; maximum forward current is limited to 200 mA per absolute maximum ratings, and thermal derating applies above 25 °C ambient.
How does the 200 nA reverse leakage at 7 V impact low-power designs?
This leakage value ensures negligible current draw in standby states - for example, drawing only 2 nA from a 10 MΩ pull-up network - preserving battery life in always-on automotive modules like door module wake-up circuits or CAN node bias networks where microamp-level quiescent current is mandatory.
Is the n.c. pin (Pin 2) required to be grounded or left floating on PCB?
Pin 2 is internally not connected and must remain unconnected on the PCB - no trace, pad, or solder should be applied. Connecting it risks mechanical stress on the die bond wire or unintended parasitic coupling; the SOT323 footprint diagram explicitly excludes solder mask or copper at this location.
BZX84W-C10-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):
- 10 V
- Tolerance:
- ±6%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 7 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-C10-QF FAQ
1.How can I place an order for BZX84W-C10-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C10-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-C10-QF reliable?
The price and inventory of BZX84W-C10-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-C10-QF is usually 5 days.
3.What payment methods are accepted for BZX84W-C10-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C10-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C10-QF?
BZX84W-C10-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C10-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-C10-QF?
For technical support, including BZX84W-C10-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C10-QF requirements.
6.How does Aetrix verify that BZX84W-C10-QF is sourced from the original manufacturer or authorized distributors?
All BZX84W-C10-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-C10-QF meets industry standards.
7.What is the process for return or replacement of BZX84W-C10-QF?
All BZX84W-C10-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C10-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-C10-QF part is unused and in its original packaging.
Return procedure for BZX84W-C10-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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