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Nexperia USA Inc. BZX84W-C3V0-QF
- Part No.:
- BZX84W-C3V0-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C3V0-QF.pdf
- Description:
- DIODE ZENER 3V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:4,965
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Product details
Overview
BZX84W-C3V0-QF from Nexperia is a ±5% tolerance Zener diode in SOT323 (SC-70) package, rated for 3.0 V nominal regulation voltage at 5 mA, with 95 Ω differential resistance and −2.1 mV/K temperature coefficient, designed for precision voltage reference and overvoltage protection in automotive power rails.
For engineers reviewing the BZX84W-C3V0-QF datasheet, BZX84W-C3V0-QF pinout, BZX84W-C3V0-QF application, or BZX84W-C3V0-QF equivalent, this part supports AEC-Q101-compliant designs requiring stable low-voltage clamping, low reverse leakage (10 µA at 1 V), and high-frequency noise suppression in compact PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 3.0 V reference under regulated current conditions (IZ = 5 mA), with tight ±5% initial tolerance and predictable negative temperature coefficient ensuring predictable drift across −55 °C to +150 °C ambient range.
Its SOT323 package delivers low thermal resistance (455 K/W junction-to-ambient on FR4), enabling reliable operation up to 275 mW total power dissipation while maintaining <10 µA reverse leakage at VR = 1 V - critical for battery-sensitive and always-on automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 3.0 V at IZ = 5 mA - defines precise clamping threshold for 3.3 V rail protection |
| Tolerance | ±5% - ensures production yield consistency without binning for cost-sensitive automotive modules |
| Differential Resistance | 95 Ω - limits output voltage variation under load current changes in feedback paths |
| Reverse Leakage Current | 10 µA at VR = 1 V - minimizes quiescent current in low-power wake-up circuits |
| Power Dissipation | 275 mW - supports continuous regulation in space-constrained SMT applications |
| Temperature Coefficient | −2.1 mV/K - enables predictable voltage drift compensation in wide-temperature environments |
| Junction Temperature | 150 °C max - qualifies for under-hood automotive placement per AEC-Q101 |
Pinout & Package
SOT323 (SC-70) leadless surface-mount plastic package with 3 terminals, optimized for high-density PCB assembly and reflow/wave soldering per JEDEC MS-012 standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node during regulation |
| 2 | Not Connected (n.c.) | Internally isolated; must remain unconnected to avoid parasitic coupling |
| 3 | Cathode (K) | Reverse-biased terminal; ties to regulated voltage node or supply rail |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, and ESD testing |
| Low capacitance | 6 pF at 1 MHz - preserves signal integrity in high-frequency feedback loops |
| High surge capability | 40 W non-repetitive peak reverse power (tp = 100 µs) - withstands transient overvoltage events |
| Wide operating temperature | −55 °C to +150 °C ambient - supports engine control unit and ADAS module deployment |
| Standard marking | "M5%" laser code - enables automated optical inspection and traceability in SMT lines |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage reference for microcontroller ADC input scaling in door module ECUs. IC Role / Device Role / Timing Role: Zener provides stable 3.0 V reference to offset sensor analog outputs before digitization. Use Value: ±5% tolerance and −2.1 mV/K TC ensure consistent ADC full-scale accuracy across cabin temperature swings. |
Use Scenario: Overvoltage clamp on 3.3 V I²C bus lines in factory automation sensors. IC Role / Device Role / Timing Role: Fast-acting shunt regulator absorbs ESD transients and line surges. Use Value: 10 µA leakage at 1 V prevents bus pull-down; 40 W surge rating meets IEC 61000-4-2 Level 4. |
| Consumer Power Adapter Feedback | Medical Wearable Battery Monitoring |
Use Scenario: Secondary-side voltage sensing in isolated flyback converters for USB-C chargers. IC Role / Device Role / Timing Role: Sets TL431 reference point via resistive divider; Zener stabilizes divider node. Use Value: 95 Ω rdif minimizes regulation error under varying load-induced current ripple. |
Use Scenario: Low-current voltage monitor for lithium coin-cell backup in glucose meters. IC Role / Device Role / Timing Role: Provides ultra-low-leakage 3.0 V threshold for battery undervoltage detection. Use Value: 10 µA IR at 1 V avoids measurable drain on 20 µA standby systems over multi-year shelf life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-C3V0 | Same electrical specs but lacks QF suffix (non-AEC-Q101 qualified) | Not validated for automotive use; unsuitable for safety-critical modules | Select only for consumer-grade cost-sensitive designs without automotive compliance requirements |
| MMSZ5226ET1G | 3.0 V ±5%, 500 mW Ptot, SOD-123 package, −2 mV/K TC | Larger footprint and higher thermal resistance (350 K/W); no AEC-Q101 certification | Choose when board layout allows larger package and automotive qualification is not required |
Compared with BZX84W-C3V0-QF, the base BZX84W-C3V0 omits automotive qualification and traceability, while MMSZ5226ET1G trades compactness and AEC-Q101 compliance for higher power handling in non-automotive contexts.
Availability
BZX84W-C3V0-QF is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and medical wearable power management requiring stable component supply with full AEC-Q101 documentation and lot-level traceability.
Supply support for BZX84W-C3V0-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 targets automotive and industrial applications demanding AEC-Q101-compliant Zener regulation in ultra-compact SOT323 packages, emphasizing thermal robustness and parametric stability.
FAQ
What is the maximum reverse current at 1 V for BZX84W-C3V0-QF?
The maximum reverse current (IR) is 10 µA at VR = 1 V and Tj = 25 °C, measured per Table 7 of the datasheet. This value remains stable across the full −55 °C to +150 °C operating range, making it suitable for low-power monitoring circuits where leakage directly impacts battery life.
Can BZX84W-C3V0-QF be used in place of a 3.3 V Zener diode?
No - BZX84W-C3V0-QF is specified at 3.0 V nominal Zener voltage (2.80 V to 3.20 V range), not 3.3 V. Substituting it for a 3.3 V device would result in undershoot of the target regulation level by ~0.3 V, potentially causing functional failure in voltage-sensitive circuits like ADC references or LDO enable thresholds.
Is pin 2 electrically connected internally?
No - pin 2 is explicitly designated "n.c." (not connected) in Table 2 of the datasheet and must remain unconnected on the PCB. Internal isolation prevents unintended coupling; soldering or routing to pin 2 may introduce parasitic capacitance or mechanical stress affecting regulation stability.
What is the non-repetitive peak reverse power dissipation capability?
BZX84W-C3V0-QF supports 40 W non-repetitive peak reverse power (PZSM) for pulse duration tp = 100 µs at Tamb = 25 °C, as defined in Table 5. This enables robust transient suppression against ESD and load-dump events common in 12 V automotive systems without permanent degradation.
BZX84W-C3V0-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):
- 3 V
- Tolerance:
- ±6.67%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1 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-C3V0-QF FAQ
1.How can I place an order for BZX84W-C3V0-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C3V0-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-C3V0-QF reliable?
The price and inventory of BZX84W-C3V0-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-C3V0-QF is usually 5 days.
3.What payment methods are accepted for BZX84W-C3V0-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C3V0-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C3V0-QF?
BZX84W-C3V0-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C3V0-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-C3V0-QF?
For technical support, including BZX84W-C3V0-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C3V0-QF requirements.
6.How does Aetrix verify that BZX84W-C3V0-QF is sourced from the original manufacturer or authorized distributors?
All BZX84W-C3V0-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-C3V0-QF meets industry standards.
7.What is the process for return or replacement of BZX84W-C3V0-QF?
All BZX84W-C3V0-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C3V0-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-C3V0-QF part is unused and in its original packaging.
Return procedure for BZX84W-C3V0-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C3V0-QF Tags
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