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Nexperia USA Inc. BZX84W-B10-QF
- Part No.:
- BZX84W-B10-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-B10-QF.pdf
- Description:
- DIODE ZENER 10V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,795
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Product details
Overview
BZX84W-B10-QF from Nexperia is a ±2% tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 10 V nominal Zener voltage at 5 mA, with 150 Ω typical differential resistance and 6.4 mV/K temperature coefficient. It delivers stable reference voltage in automotive power supply rails and low-power sensor biasing circuits.
For engineers reviewing the BZX84W-B10-QF datasheet, BZX84W-B10-QF pinout, BZX84W-B10-QF application, or BZX84W-B10-QF equivalent, this page provides verified Zener parameters, AEC-Q101 qualification status, thermal resistance (455 K/W), reverse leakage (200 nA at 7 V), and SOT323 terminal mapping for layout and reliability validation.
Technical Context
This Zener diode operates in reverse breakdown to maintain precise 10 V regulation under DC or low-frequency transient conditions. Its ±2% tolerance (B-series), 150 °C max junction temperature, and AEC-Q101 qualification confirm suitability for automotive body control modules and engine management subsystems requiring stable voltage references.
The device exhibits 150 Ω differential resistance at 5 mA, 200 nA reverse leakage at VR = 7 V, and a positive 6.4 mV/K temperature coefficient - enabling predictable drift compensation in temperature-sensitive analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.80 V to 10.20 V at IZ = 5 mA - ensures tight regulation window for precision reference applications |
| Tolerance | ±2% (B-series) - reduces calibration overhead in production test of automotive ECUs |
| Differential Resistance | 150 Ω max at IZ = 5 mA - limits output impedance impact on load regulation stability |
| Reverse Leakage (IR) | 200 nA at VR = 7 V - minimizes quiescent current draw in battery-powered sensors |
| Total Power Dissipation | 275 mW at Tamb = 25 °C on FR4 PCB - defines maximum continuous DC power handling in compact layouts |
| Thermal Resistance (Rth(j-a)) | 455 K/W - determines junction temperature rise under load; critical for thermal derating in sealed enclosures |
| Temperature Coefficient | +6.4 mV/K - enables predictable voltage drift modeling across −40 °C to +125 °C operating range |
Pinout & Package
SOT323 (SC-70) leadless surface-mount plastic package with 3 terminals; footprint compatible with standard reflow soldering per Figure 9 in datasheet Rev. 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node in Zener configuration |
| 2 | Not Connected (n.c.) | Internally isolated; must remain unconnected in PCB layout to avoid parasitic coupling |
| 3 | Cathode (K) | Reverse-biased terminal; connects to higher-potential node to enable Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, humidity, and mechanical shock per JESD22 standards |
| Low reverse leakage | 200 nA at 7 V enables microamp-level standby current in always-on vehicle modules |
| Stable temperature coefficient | +6.4 mV/K allows accurate drift compensation in engine coolant temperature sensor interfaces |
| High surge capability | 40 W non-repetitive peak reverse power (tp = 100 µs) protects against load dump transients |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Provides stable 10 V reference for microcontroller ADC inputs monitoring door lock actuator current. IC Role / Device Role / Timing Role: Zener voltage reference regulating bias point for current-sense amplifier feedback network. Use Value: ±2% tolerance eliminates need for post-production trimming; AEC-Q101 qualification ensures 15-year field reliability in 12 V vehicle systems. |
Use Scenario: Supplies precision reference to a 16-bit sigma-delta ADC measuring thermocouple output in factory automation PLCs. IC Role / Device Role / Timing Role: Low-drift Zener reference source maintaining ADC full-scale accuracy across −25 °C to +70 °C ambient. Use Value: +6.4 mV/K temperature coefficient enables software-based linear compensation; 150 Ω dynamic resistance minimizes code spread due to supply ripple. |
| Automotive HVAC Control Unit | Portable Medical Device Power Management |
Use Scenario: Stabilizes voltage for fan speed controller IC in climate control system exposed to wide thermal gradients. IC Role / Device Role / Timing Role: Zener clamp regulating gate drive voltage of N-channel MOSFET in PWM-controlled blower motor circuit. Use Value: 455 K/W thermal resistance supports operation up to 125 °C junction temperature without heatsink; 275 mW power rating accommodates intermittent high-current surges. |
Use Scenario: Generates clean 10 V reference for lithium-ion battery fuel gauge IC in handheld diagnostic equipment. IC Role / Device Role / Timing Role: Low-leakage Zener reference ensuring <1 µA standby current during sleep mode while maintaining voltage accuracy. Use Value: 200 nA reverse leakage at 7 V preserves battery life over multi-week idle periods; SOT323 footprint saves space in ultra-thin housing designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5240B | 10 V nominal, ±5% tolerance, 170 Ω differential resistance, no AEC-Q101 qualification | Rated for commercial/industrial use only; not validated for automotive temperature cycling or humidity testing | Select when cost sensitivity outweighs automotive qualification requirements and ±5% tolerance is acceptable |
| Vishay BZX84-C10 | 10 V nominal, ±5% tolerance (C-series), 170 Ω differential resistance, AEC-Q101 qualified | Higher tolerance increases calibration time in production; identical thermal and surge ratings | Choose when AEC-Q101 compliance is mandatory but tighter tolerance is not required for system-level accuracy |
Compared with BZX84W-B10-QF, MMBZ5240B lacks automotive qualification and offers looser tolerance, while BZX84-C10 retains AEC-Q101 compliance but sacrifices regulation precision - making the B-series part optimal for safety-critical voltage references where both qualification and ±2% accuracy are required.
Availability
BZX84W-B10-QF is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and portable medical devices requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for BZX84W-B10-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 logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
The BZX84W-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for robust voltage regulation in harsh automotive environments and high-reliability industrial control systems.
FAQ
What is the maximum continuous reverse current the BZX84W-B10-QF can sustain at 25 °C ambient?
The device is rated for 200 mA maximum forward current (IF), but its Zener operation relies on reverse bias. At 25 °C ambient on FR4 PCB, the 275 mW total power dissipation limit corresponds to ~27.5 mA continuous reverse current at 10 V (P = V × I). Exceeding this requires thermal derating per the 455 K/W Rth(j-a) value.
How does the "QF" suffix in BZX84W-B10-QF differ from standard BZX84W-B10-Q?
The "QF" suffix denotes Nexperia's specific tape-and-reel packaging variant compliant with EIA-481-D standards, featuring 3000 units per reel and moisture sensitivity level (MSL) 1. It shares identical electrical and thermal specifications with the base BZX84W-B10-Q part; the suffix reflects packaging and handling attributes only.
Can BZX84W-B10-QF be used in parallel for higher power dissipation?
No - Zener diodes exhibit negative temperature coefficients below ~5 V and positive above, but even within the same batch, slight VZ mismatches cause current hogging. Parallel operation risks thermal runaway and premature failure; use a single higher-power Zener or active regulation instead.
Is the n.c. pin (Pin 2) electrically isolated or tied to internal substrate?
Pin 2 is internally not connected - it is fully isolated from all die structures. The datasheet explicitly states "n.c." (not connected), and the SOT323 outline confirms no internal bond wire or metallization links to this terminal. PCB land should remain unconnected to prevent unintended coupling or solder bridging.
BZX84W-B10-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:
- ±2%
- 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-B10-QF FAQ
1.How can I place an order for BZX84W-B10-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-B10-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-B10-QF reliable?
The price and inventory of BZX84W-B10-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-B10-QF is usually 5 days.
3.What payment methods are accepted for BZX84W-B10-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-B10-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-B10-QF?
BZX84W-B10-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-B10-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-B10-QF?
For technical support, including BZX84W-B10-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-B10-QF requirements.
6.How does Aetrix verify that BZX84W-B10-QF is sourced from the original manufacturer or authorized distributors?
All BZX84W-B10-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-B10-QF meets industry standards.
7.What is the process for return or replacement of BZX84W-B10-QF?
All BZX84W-B10-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-B10-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-B10-QF part is unused and in its original packaging.
Return procedure for BZX84W-B10-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-B10-QF Tags
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