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Nexperia USA Inc. BZX84W-C10-QX
- Part No.:
- BZX84W-C10-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C10-QX.pdf
- Description:
- DIODE ZENER 10V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:8,080
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Product details
Overview
BZX84W-C10-QX from Nexperia is a ±5% tolerance Zener diode in SOT323 (SC-70) package, rated for 10 V nominal regulation voltage at 5 mA, with 200 nA reverse leakage at 7 V, 150 °C max junction temperature, and AEC-Q101 qualification for automotive voltage reference and clamping functions.
For engineers reviewing the BZX84W-C10-QX datasheet, BZX84W-C10-QX pinout, BZX84W-C10-QX application, or BZX84W-C10-QX equivalent, this part supports precision low-power voltage stabilization in engine control units, infotainment power rails, and sensor biasing where thermal stability and automotive-grade reliability are required.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable 10 V output across load and line variations, with differential resistance of 150 Ω at 5 mA and temperature coefficient of +6.4 mV/K - indicating positive drift with temperature rise. It uses silicon planar epitaxial construction for repeatable breakdown characteristics.
Designed for surface-mount reflow assembly on FR4 PCBs, it delivers 275 mW total power dissipation under standard footprint conditions and withstands non-repetitive surge pulses up to 40 W (100 µs), enabling robust transient suppression in automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10 V nominal at IZ = 5 mA; ±5% tolerance ensures regulation within 9.4–10.6 V in production. |
| Reverse Leakage (IR) | 200 nA at VR = 7 V; enables ultra-low quiescent current in always-on circuits. |
| Differential Resistance (rdif) | 150 Ω at IZ = 5 mA; defines regulation stiffness - lower values yield tighter voltage control under load change. |
| Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4; sets maximum continuous DC power before thermal derating begins. |
| Junction Temperature (Tj) | 150 °C max; supports operation in under-hood automotive environments without thermal shutdown. |
| Thermal Resistance (Rth(j-a)) | 455 K/W in free air; determines temperature rise per watt - critical for PCB layout and thermal margin analysis. |
| Capacitance (Cd) | 3 pF at f = 1 MHz, VR = 0 V; minimizes high-frequency signal coupling in RF-adjacent circuits. |
Pinout & Package
SOT323 (SC-70) leadless surface-mount plastic package: 1.3 mm × 1.8 mm footprint, 0.65 mm pitch, 0.9 mm height, optimized for automated placement and reflow soldering on dense PCBs.
| 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.) | Internally isolated; must remain unconnected on PCB to avoid parasitic coupling or mechanical stress. |
| 3 | Cathode (K) | Reverse-biased terminal; ties to regulated voltage rail or clamping point in circuit design. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use per stress test requirements - eliminates need for additional qualification effort in Tier-1 designs. |
| ±5% Zener tolerance (C-series) | Enables cost-effective voltage reference where tight regulation is not critical, e.g., overvoltage detection thresholds. |
| Low 3 pF capacitance | Preserves signal integrity in high-speed analog or RF-adjacent applications such as CAN transceiver bias networks. |
| 150 °C junction rating | Supports deployment in under-dash, engine bay, or powertrain modules without external heatsinking. |
| 275 mW power rating on FR4 | Provides sufficient headroom for 10 V/10 mA regulation in compact space-constrained modules like body control units. |
Applications
| Engine Control Unit (ECU) Reference | Infotainment Power Rail Clamp |
|---|---|
|
Use Scenario: Stabilizing 10 V reference for analog-to-digital converter (ADC) inputs monitoring throttle position and coolant temperature. IC Role / Device Role / Timing Role: Zener voltage reference providing stable bias for precision sensor signal conditioning. Use Value: ±5% tolerance and +6.4 mV/K TC ensure ADC accuracy remains within 0.5% full-scale error across −40 °C to +125 °C ambient range. |
Use Scenario: Clamping 12 V supply rail against load-dump transients in head unit power management. IC Role / Device Role / Timing Role: Transient voltage suppressor limiting rail excursions to safe levels during ISO 7637-2 pulse 5a events. Use Value: 40 W non-repetitive peak power handling absorbs 100 µs surges without degradation, protecting downstream LDOs and processors. |
| Automotive Sensor Bias Network | Body Control Module (BCM) Overvoltage Detection |
|
Use Scenario: Providing bias current to Hall-effect wheel speed sensors operating from 5–16 V battery input. IC Role / Device Role / Timing Role: Current-source Zener element establishing fixed 10 V node for sensor excitation and feedback scaling. Use Value: 200 nA leakage at 7 V ensures minimal current draw in sleep mode, extending battery life in key-off states. |
Use Scenario: Detecting >15 V overvoltage condition on BCM 12 V rail to trigger fault logging and LED warning. IC Role / Device Role / Timing Role: Threshold detector using Zener breakdown to activate comparator input when rail exceeds safe limit. Use Value: Sharp 10 V knee and 150 Ω dynamic impedance enable reliable triggering within ±0.3 V across temperature and aging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-C10-Q | Identical electrical specs and AEC-Q101 qualification; differs only in marking code (R4% vs. R4X) and traceability batch coding. | No functional difference; both support same automotive and industrial use cases. | Select BZX84W-C10-QX when full lot traceability and extended manufacturing date codes are required per OEM procurement policy. |
| MMSZ5240B-TP | 10 V ±5%, but SOD-123 package (larger footprint), 500 mW Ptot, no AEC-Q101 certification, 220 Ω rdif. | Suitable for industrial or consumer boards where automotive qualification is not mandated and board space allows larger package. | Choose MMSZ5240B-TP only for non-automotive designs requiring higher power margin and where SOD-123 placement is acceptable. |
Compared with BZX84W-C10-QX, the BZX84W-C10-Q offers identical performance with minor traceability enhancements, while MMSZ5240B-TP trades automotive compliance and compact size for higher power and broader industrial availability - making the QX variant optimal for AEC-compliant, space-constrained automotive modules.
Availability
BZX84W-C10-QX is available at Aetrix Electronics and suitable for engine control units, infotainment systems, and body control modules requiring stable component supply with full automotive qualification and lot-level traceability.
Supply support for BZX84W-C10-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, with leadership in automotive-qualified components and advanced packaging technologies.
The BZX84W-Q series belongs to Nexperia's automotive Zener diode product line, engineered specifically for voltage reference, clamping, and overvoltage protection in harsh-environment automotive electronics.
FAQ
What is the maximum continuous reverse current the BZX84W-C10-QX can sustain at 10 V?
The device is rated for 200 mA maximum forward current (IF), but in Zener operation, continuous reverse current is limited by power dissipation. At 10 V, the absolute maximum steady-state reverse current is 27.5 mA (275 mW ÷ 10 V), assuming Tamb = 25 °C and standard FR4 mounting. Derating applies above 25 °C ambient.
Does the 'QX' suffix indicate a different electrical specification than the standard 'Q' version?
No - the 'QX' suffix denotes an enhanced traceability variant with extended manufacturing date codes and full lot-level documentation, while maintaining identical electrical parameters, AEC-Q101 qualification, thermal ratings, and package dimensions as the BZX84W-C10-Q.
Can BZX84W-C10-QX be used in parallel for higher power handling?
Parallel operation is not recommended due to mismatch in Zener voltage and dynamic resistance, which causes current imbalance and potential thermal runaway. For higher power, select a single higher-rated Zener (e.g., PZM series) or use active regulation instead.
Is the n.c. pin (Pin 2) electrically isolated or internally bonded?
Pin 2 is fully electrically isolated - no internal connection exists. It serves only as a mechanical anchor for the SOT323 package and must remain unconnected on the PCB to prevent unintended coupling or solder bridging that could compromise reliability.
BZX84W-C10-QX 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-QX FAQ
1.How can I place an order for BZX84W-C10-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C10-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 BZX84W-C10-QX reliable?
The price and inventory of BZX84W-C10-QX 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-QX is usually 5 days.
3.What payment methods are accepted for BZX84W-C10-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C10-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C10-QX?
BZX84W-C10-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C10-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 BZX84W-C10-QX?
For technical support, including BZX84W-C10-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C10-QX requirements.
6.How does Aetrix verify that BZX84W-C10-QX is sourced from the original manufacturer or authorized distributors?
All BZX84W-C10-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 BZX84W-C10-QX meets industry standards.
7.What is the process for return or replacement of BZX84W-C10-QX?
All BZX84W-C10-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C10-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 BZX84W-C10-QX part is unused and in its original packaging.
Return procedure for BZX84W-C10-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C10-QX Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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