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Nexperia USA Inc. BZX84W-B6V2-QF
- Part No.:
- BZX84W-B6V2-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-B6V2-QF.pdf
- Description:
- DIODE ZENER 6.2V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:8,868
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Product details
Overview
BZX84W-B6V2-QF from Nexperia is a ±2% tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 6.2 V nominal Zener voltage at 5 mA, 150 Ω differential resistance, and 2.3 mV/K temperature coefficient. It delivers stable reference voltage in automotive power supply rails, ECU voltage monitoring circuits, and overvoltage clamp stages.
For engineers reviewing the BZX84W-B6V2-QF datasheet, BZX84W-B6V2-QF pinout, BZX84W-B6V2-QF application, or BZX84W-B6V2-QF equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (455 K/W), junction temperature limit (150 °C), reverse leakage current (3 µA at 4 V), and AEC-Q101 qualification status.
Technical Context
This Zener diode operates in reverse breakdown to maintain precise DC voltage regulation under varying load and temperature conditions. Its 6.2 V nominal Zener voltage is specified at IZ = 5 mA with ±2% tolerance, and exhibits low dynamic impedance (150 Ω) for minimal output voltage variation across current changes.
The device features a positive temperature coefficient of +2.3 mV/K at 5 mA, enabling predictable drift behavior in temperature-sensitive references. It is qualified per AEC-Q101 and rated for operation from −55 °C to +150 °C ambient, with maximum junction temperature limited to 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V nominal at IZ = 5 mA; tight ±2% tolerance ensures accurate voltage reference in precision regulation circuits. |
| Differential Resistance (rdiff) | 150 Ω max at IZ = 5 mA; low impedance maintains stable output under load transients. |
| Temperature Coefficient (SZ) | +2.3 mV/K at IZ = 5 mA; enables predictable, linear voltage drift for compensated designs. |
| Reverse Leakage Current (IR) | 3 µA max at VR = 4 V; low leakage preserves accuracy in high-impedance bias networks. |
| Total Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 PCB; defines maximum continuous steady-state power handling. |
| Junction-to-Ambient Thermal Resistance (Rth(j-a)) | 455 K/W; determines temperature rise per watt dissipated in standard mounting conditions. |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA; supports use as forward-biased clamp or protection element. |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W at tp = 100 µs; enables transient surge suppression in automotive load-dump scenarios. |
Pinout & Package
SOT323 (SC-70) leadless surface-mount plastic package with 3 terminals; compact 2.2 mm × 1.35 mm footprint, 0.65 mm pitch, and 0.1 mm A1 height for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connected to lower-potential side in reverse-bias configuration; required for proper Zener conduction path. |
| 2 | Not Connected (n.c.) | Internally unconnected terminal; must remain floating-no PCB trace or solder mask opening required. |
| 3 | Cathode (K) | Connected to higher-potential side in reverse-bias; carries regulated Zener current and defines reference node polarity. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables direct use in engine control, body electronics, and ADAS modules. |
| ±2% Zener voltage tolerance | Reduces need for post-production trimming in voltage reference circuits, improving yield and simplifying BOM management for Tier 1 suppliers. |
| Low differential resistance (150 Ω) | Minimizes output voltage deviation under ±1 mA load current variation-critical for analog sensor biasing and ADC reference stability. |
| High-temperature operation (Tj ≤ 150 °C) | Supports placement near heat-generating components (e.g., power MOSFETs, DC-DC inductors) without derating in under-hood applications. |
| SC-70 package compatibility | Enables automated pick-and-place assembly and reflow soldering per J-STD-020; footprint matches industry-standard SOT323 land patterns. |
Applications
| Automotive Engine Control Unit (ECU) Reference | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Providing stable 6.2 V reference for microcontroller ADC inputs and op-amp biasing in engine management systems. IC Role / Device Role / Timing Role: Zener voltage reference diode operating in reverse breakdown to fix analog reference potential. Use Value: ±2% tolerance and +2.3 mV/K TC enable <10 mV total drift over −40 °C to +125 °C, meeting ASIL-B functional safety margin requirements. |
Use Scenario: Regulating excitation voltage for resistive bridge sensors (e.g., pressure, load cells) in factory automation equipment. IC Role / Device Role / Timing Role: Precision shunt regulator maintaining constant bias voltage despite supply ripple and load variation. Use Value: 150 Ω rdiff limits reference error to <0.15% under ±1 mA sensor current change-preserving 12-bit measurement linearity. |
| Telecom Line Card Overvoltage Clamp | Consumer Power Supply Feedback Node |
|
Use Scenario: Clamping transient surges on 5 V/12 V backplane rails in base station line cards exposed to lightning-induced spikes. IC Role / Device Role / Timing Role: Fast-acting Zener clamp absorbing non-repetitive 40 W pulses (100 µs) during surge events. Use Value: 40 W PZSM rating allows safe clamping of 100 V/400 mA transients without degradation-meeting IEC 61000-4-5 Level 3. |
Use Scenario: Setting feedback threshold in secondary-side optocoupler-based regulation for AC-DC adapters and USB-PD chargers. IC Role / Device Role / Timing Role: Shunt reference establishing precise 6.2 V trip point for TL431-like feedback loop control. Use Value: 3 µA reverse leakage at 4 V prevents false triggering in high-impedance feedback dividers, ensuring stable no-load regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-C6V2-Q | ±5% Zener tolerance (vs. ±2%), identical package and thermal specs. | Acceptable where cost sensitivity outweighs precision requirement; not suitable for ASIL-B or 12-bit+ reference designs. | Select when tighter tolerance is unnecessary and BOM cost reduction is prioritized over reference accuracy. |
| MMSZ5234B-TP | Same 6.2 V nominal, ±5% tolerance, SOD-123 package (larger footprint, higher Rth(j-a) = 500 K/W). | Limited to non-automotive, lower-power applications due to lack of AEC-Q101 qualification and reduced thermal performance. | Choose only for consumer-grade boards where space constraints allow larger SOD-123 and automotive qualification is not required. |
Compared with BZX84W-C6V2-Q and MMSZ5234B-TP, the BZX84W-B6V2-QF provides superior voltage accuracy and automotive qualification in the smallest footprint-making it optimal for space-constrained, safety-critical ECU and ADAS subsystems.
Availability
BZX84W-B6V2-QF is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor signal conditioning, telecom surge protection, and consumer power supply feedback requiring stable component supply and full AEC-Q101 traceability.
Supply support for BZX84W-B6V2-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 technologies.
The BZX84W-Q series belongs to Nexperia's automotive-grade Zener diode product line, engineered specifically for robust voltage regulation in harsh-environment applications including engine control, body electronics, and ADAS sensor interfaces.
FAQ
What is the maximum continuous reverse current this diode can handle at 25 °C?
The BZX84W-B6V2-QF has a maximum total power dissipation of 275 mW at Tamb = 25 °C. At its 6.2 V Zener voltage, this corresponds to a maximum continuous reverse current of approximately 44.4 mA (275 mW ÷ 6.2 V). Exceeding this current risks thermal runaway unless board-level heatsinking or derating is applied.
Is Pin 2 truly unconnected, or does it serve a mechanical or thermal function?
Pin 2 is electrically unconnected (n.c.) per Nexperia's official pinning diagram and internal construction. It serves no electrical function and must remain floating. While it may provide minor mechanical anchoring during reflow, it contributes negligibly to thermal conduction-Rth(j-a) is defined with Pin 2 unconnected and un-soldered.
How does the +2.3 mV/K temperature coefficient affect long-term reference stability?
The +2.3 mV/K coefficient means the Zener voltage increases by 2.3 mV per Kelvin rise in junction temperature. Over a 100 K range (e.g., −40 °C to +60 °C ambient), this produces ~230 mV drift-offset by initial ±2% tolerance (±124 mV). Total worst-case drift remains within ±354 mV, supporting applications needing <±0.6% reference stability.
Can this diode be used in forward-bias mode, and what is its typical forward voltage?
Yes, the BZX84W-B6V2-QF functions as a standard silicon diode in forward bias. Its forward voltage is guaranteed ≤0.9 V at IF = 10 mA and Tj = 25 °C, aligning with typical Si diode characteristics. This enables dual-use in clamp circuits requiring both reverse Zener action and forward conduction paths.
BZX84W-B6V2-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):
- 6.2 V
- Tolerance:
- ±1.94%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 4 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-B6V2-QF FAQ
1.How can I place an order for BZX84W-B6V2-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-B6V2-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-B6V2-QF reliable?
The price and inventory of BZX84W-B6V2-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-B6V2-QF is usually 5 days.
3.What payment methods are accepted for BZX84W-B6V2-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-B6V2-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-B6V2-QF?
BZX84W-B6V2-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-B6V2-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-B6V2-QF?
For technical support, including BZX84W-B6V2-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-B6V2-QF requirements.
6.How does Aetrix verify that BZX84W-B6V2-QF is sourced from the original manufacturer or authorized distributors?
All BZX84W-B6V2-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-B6V2-QF meets industry standards.
7.What is the process for return or replacement of BZX84W-B6V2-QF?
All BZX84W-B6V2-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-B6V2-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-B6V2-QF part is unused and in its original packaging.
Return procedure for BZX84W-B6V2-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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