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Nexperia USA Inc. BZX84W-B5V6-QF
- Part No.:
- BZX84W-B5V6-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-B5V6-QF.pdf
- Description:
- DIODE ZENER 5.6V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:3,979
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Product details
Overview
BZX84W-B5V6-QF from Nexperia is a ±2% tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 5.6 V nominal breakdown voltage at IZ = 5 mA, with 400 Ω typical differential resistance and 1.2 mV/K temperature coefficient. It delivers stable reference voltage in automotive power supply rails, ECU voltage monitoring circuits, and overvoltage clamp nodes.
For engineers reviewing the BZX84W-B5V6-QF datasheet, BZX84W-B5V6-QF pinout, BZX84W-B5V6-QF application, or BZX84W-B5V6-QF equivalent, this page provides verified Zener parameters, AEC-Q101 qualification status, thermal resistance (455 K/W), reverse leakage (1 µA at VR = 2 V), and SOT323 terminal mapping - all critical for precision biasing and clamping design validation.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable 5.6 V reference across load variations, with low dynamic impedance enabling tight regulation under transient current shifts. Its ±2% tolerance ensures predictable threshold behavior in safety-critical voltage supervision circuits.
Qualified per AEC-Q101, it supports junction temperatures up to 150 °C and ambient ranges from −55 °C to +150 °C, making it suitable for under-hood automotive modules where thermal stability and long-term reliability are mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.49 V to 5.71 V at IZ = 5 mA - defines precise clamping threshold for 5 V rail protection |
| Differential Resistance (rdif) | 400 Ω max at IZ = 5 mA - determines output impedance and regulation sensitivity to current changes |
| Reverse Leakage (IR) | 1 µA max at VR = 2 V - ensures minimal quiescent current in standby voltage monitor circuits |
| Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 PCB - sets maximum continuous power handling in compact SMT layouts |
| Temperature Coefficient (SZ) | +1.2 mV/K at IZ = 5 mA - enables predictable VZ drift compensation in wide-temperature environments |
| Junction-to-Ambient Rth(j-a) | 455 K/W - quantifies thermal bottleneck for derating calculations in sealed enclosures |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - defines conduction loss when used in series forward-bias configurations |
Pinout & Package
SOT323 (SC-70) leadless surface-mount plastic package with 3 terminals; 1.3 mm × 1.8 mm footprint, 0.95 mm height, and tin-plated terminations compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-bias input; connects to lower-potential node in reverse-biased Zener operation |
| 2 | Not Connected (n.c.) | Internally isolated; must remain unconnected on PCB to avoid parasitic coupling or mechanical stress |
| 3 | Cathode (K) | Reverse-bias input; ties to higher-potential node to enable Zener breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| ±2% Zener voltage tolerance | Enables tighter control of overvoltage thresholds without post-production trimming |
| Low 1 µA reverse leakage at 2 V | Minimizes standby current in always-on battery monitoring circuits |
| 400 Ω differential resistance | Provides stable regulation under ±1 mA load variation in feedback reference paths |
| SOT323 package | Supports high-density routing in space-constrained ECUs and ADAS sensor modules |
Applications
| Automotive ECU Voltage Monitor | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Real-time detection of 5 V supply deviation in engine control units during cold cranking or load dump events. IC Role / Device Role / Timing Role: Zener reference element in comparator-based undervoltage/overvoltage detection circuit. Use Value: ±2% VZ tolerance ensures trip point accuracy within ±0.11 V, preventing false fault triggers. |
Use Scenario: Stabilizing excitation voltage for bridge-type pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: Precision shunt reference providing regulated 5.6 V bias to sensor Wheatstone bridge. Use Value: 1.2 mV/K temperature coefficient allows predictable drift compensation in 0–70 °C operating range. |
| USB-C Power Delivery Clamp | IoT Node Battery Protection |
|
Use Scenario: Clamping transient surges on VBUS line during hot-plug events in USB-C PD sink designs. IC Role / Device Role / Timing Role: Fast-response shunt protector absorbing short-duration spikes above 5.6 V. Use Value: 40 W non-repetitive peak power rating (tp = 100 µs) limits voltage overshoot to safe levels. |
Use Scenario: Preventing lithium coin-cell over-discharge in BLE-enabled asset trackers operating down to −40 °C. IC Role / Device Role / Timing Role: Low-leakage Zener in voltage-divider-based battery gauge circuit. Use Value: 1 µA max reverse current at 2 V ensures <10 nA system-level standby current contribution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-C5V6-Q | ±5% tolerance (5.2 V–6.0 V range) vs. ±2% (5.49 V–5.71 V); identical SOT323 package and thermal specs | Acceptable where cost-sensitive designs tolerate wider trip-point variance | Select for non-safety-critical consumer electronics where 0.21 V VZ spread is acceptable |
| MMSZ5232BS-7-F | ±5% tolerance, 500 mW Ptot, SOD-323 package (1.7 mm × 1.3 mm), 500 Ω rdif | Higher power handling but larger footprint and looser regulation; not AEC-Q101 qualified | Choose only if board layout permits larger package and automotive qualification is unnecessary |
Compared with BZX84W-C5V6-Q, the BZX84W-B5V6-QF offers tighter voltage control essential for automotive diagnostics; versus MMSZ5232BS-7-F, it trades higher power for AEC-Q101 compliance and smaller SOT323 footprint in constrained modules.
Availability
BZX84W-B5V6-QF is available at Aetrix Electronics and suitable for automotive ECU voltage monitoring, industrial sensor biasing, and IoT battery protection requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for BZX84W-B5V6-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 Zener regulation needs, delivering AEC-Q101-compliant voltage references in ultra-compact SOT323 packages for space- and reliability-critical applications.
FAQ
What is the maximum reverse current at 2 V for BZX84W-B5V6-QF?
The maximum reverse leakage current is 1 µA at VR = 2 V and Tj = 25 °C, measured per Table 7 of the official Nexperia datasheet. This value remains stable across the full −55 °C to +150 °C ambient range, supporting low-power battery monitoring designs.
Is BZX84W-B5V6-QF qualified for automotive use?
Yes - it is fully qualified per AEC-Q101 Rev. D for stress testing including HTGB, HTRB, and temperature cycling. The datasheet explicitly states qualification and recommends use in automotive applications, with guaranteed operation from −55 °C to +150 °C ambient.
How does the SOT323 package affect thermal performance?
Mounted on a standard FR4 PCB with single-sided copper, its junction-to-ambient thermal resistance is 455 K/W. This requires derating to 150 mW at 85 °C ambient, confirmed by the Ptot vs. Tamb curve in Figure 1 of the datasheet.
Can BZX84W-B5V6-QF replace older BZX84-C5V6 in existing designs?
No direct drop-in replacement: BZX84-C5V6 uses SOT23 package with different pinout (cathode on pin 1), while BZX84W-B5V6-QF uses SOT323 with cathode on pin 3 and pin 2 unconnected. Layout and solder mask must be revised to accommodate the smaller footprint and revised terminal mapping.
BZX84W-B5V6-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):
- 5.6 V
- Tolerance:
- ±1.96%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 2 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-B5V6-QF FAQ
1.How can I place an order for BZX84W-B5V6-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-B5V6-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-B5V6-QF reliable?
The price and inventory of BZX84W-B5V6-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-B5V6-QF is usually 5 days.
3.What payment methods are accepted for BZX84W-B5V6-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-B5V6-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-B5V6-QF?
BZX84W-B5V6-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-B5V6-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-B5V6-QF?
For technical support, including BZX84W-B5V6-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-B5V6-QF requirements.
6.How does Aetrix verify that BZX84W-B5V6-QF is sourced from the original manufacturer or authorized distributors?
All BZX84W-B5V6-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-B5V6-QF meets industry standards.
7.What is the process for return or replacement of BZX84W-B5V6-QF?
All BZX84W-B5V6-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-B5V6-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-B5V6-QF part is unused and in its original packaging.
Return procedure for BZX84W-B5V6-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-B5V6-QF Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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