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Nexperia USA Inc. BZX84W-B7V5-QF
- Part No.:
- BZX84W-B7V5-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-B7V5-QF.pdf
- Description:
- DIODE ZENER 7.5V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:4,532
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Product details
Overview
BZX84W-B7V5-QF from Nexperia is a ±2% tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 7.5 V nominal Zener voltage at 5 mA, 275 mW total power dissipation, and qualified to AEC-Q101 for automotive use. It provides stable voltage reference in low-power biasing, overvoltage clamping, and signal conditioning circuits.
For engineers reviewing the BZX84W-B7V5-QF datasheet, BZX84W-B7V5-QF pinout, BZX84W-B7V5-QF application, or BZX84W-B7V5-QF equivalent, this page delivers verified electrical parameters, automotive-grade reliability context, thermal resistance data, and validated alternative parts for design-in and sourcing decisions.
Technical Context
This Zener diode operates in reverse breakdown with a typical differential resistance of 80 Ω at IZ = 5 mA and exhibits a positive temperature coefficient of +4.0 mV/K at the same current. Its low 150 pF capacitance at 1 MHz and 0 V reverse bias supports high-frequency regulation and noise-sensitive analog front-ends.
The device features a not-connected (n.c.) terminal (Pin 2), enabling layout flexibility in compact SMT designs while maintaining anode–cathode isolation integrity. Thermal resistance from junction to ambient is 455 K/W on standard FR4 PCB, defining its derating envelope under sustained load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.35 V to 7.65 V at IZ = 5 mA - defines precise regulation window for 7.5 V reference applications |
| Tolerance | ±2% (B-series) - enables tighter voltage margin control vs. ±5% C-series in precision feedback paths |
| Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 PCB - sets maximum continuous DC or low-duty-cycle pulse loading |
| Differential Resistance (rdif) | 80 Ω max at IZ = 5 mA - determines output impedance and load regulation error sensitivity |
| Reverse Current (IR) | 1 µA max at VR = 5 V - ensures minimal leakage in standby or high-impedance sensing nodes |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - defines forward conduction loss in dual-direction clamp configurations |
| Junction Temperature (Tj) | −55 °C to +150 °C - supports operation across full automotive under-hood and cabin temperature ranges |
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 current entry point; connected to lower-potential node in Zener regulation configuration |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating-no PCB trace or solder mask required |
| 3 | Cathode (K) | Reverse-bias terminal; tied to regulated output or voltage reference node in shunt configuration |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTGB, HTRB, and temperature cycling per JESD22-A108 |
| Low dynamic impedance | 80 Ω max at 5 mA enables <1% output deviation under ±10 mA load variation in feedback loops |
| High-frequency capability | 150 pF capacitance at 1 MHz supports stable operation up to ~10 MHz in RF bias and ESD protection networks |
| Wide operating temperature | −55 °C to +150 °C junction range allows deployment in engine control units and ADAS sensor modules |
| Standard SOT323 footprint | Enables drop-in replacement with legacy BZX84 series and compatibility with automated pick-and-place equipment |
Applications
| Automotive Sensor Biasing | Industrial Analog Input Protection |
|---|---|
Use Scenario: Providing stable 7.5 V reference for MEMS pressure sensor excitation in engine manifold modules. IC Role / Device Role / Timing Role: Shunt Zener regulator establishing fixed bias voltage independent of supply ripple. Use Value: Maintains sensor linearity within ±0.5% over −40 °C to +125 °C ambient due to tight ±2% tolerance and +4.0 mV/K TC. |
Use Scenario: Clamping 0–10 V analog input lines against transient overvoltage in PLC analog I/O modules. IC Role / Device Role / Timing Role: Reverse-biased voltage limiter absorbing surge energy before op-amp input stage. Use Value: Limits input to ≤8.2 V during 1 kV/µs transients while dissipating <275 mW peak power on standard FR4 layout. |
| Consumer Power Supply Feedback | Medical Instrument Reference |
Use Scenario: Setting feedback threshold in isolated flyback converter secondary-side regulation loop. IC Role / Device Role / Timing Role: Precision voltage reference for TL431-like comparator biasing in optocoupler-coupled feedback path. Use Value: Enables ±1% output regulation accuracy with 80 Ω rdif minimizing load-induced drift across 5–20 mA operating range. |
Use Scenario: Generating calibrated 7.5 V reference for ADC reference buffer in portable ECG front-end. IC Role / Device Role / Timing Role: Low-noise, low-leakage shunt reference stabilizing REF+ node prior to rail-to-rail buffer. Use Value: Delivers <1 µA leakage at 5 V reverse bias, preventing reference divider current error in high-Z 16-bit SAR ADC systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-C7V5-Q | ±5% tolerance (7.0–7.9 V range), higher IR (2 µA max at 5 V), identical package and Ptot | Acceptable where system-level calibration compensates for wider VZ spread | Select when cost sensitivity outweighs precision requirement and no post-assembly trimming is performed |
| MMSZ5236B-7-F | ±5% tolerance, 350 mW Ptot, SOD-123 package (larger footprint), 100 Ω rdif | Higher power handling but incompatible pinout and thermal profile on dense PCBs | Choose only if >275 mW dissipation is needed and board space permits larger SOD-123 layout |
Compared with BZX84W-B7V5-QF, the BZX84W-C7V5-Q trades ±2% precision for broader tolerance at identical form factor, while MMSZ5236B-7-F offers higher power but requires redesign of land pattern and thermal relief-neither is pin-compatible nor functionally interchangeable without circuit validation.
Availability
BZX84W-B7V5-QF is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial analog input protection, and consumer power supply feedback requiring stable component supply with AEC-Q101 compliance and tight ±2% voltage tolerance.
Supply support for BZX84W-B7V5-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 reliability, small-footprint SMT integration, and stable Zener performance across extended temperature ranges.
FAQ
What is the maximum reverse current specification for BZX84W-B7V5-QF at 5 V?
The maximum reverse current (IR) is 1 µA at VR = 5 V and Tj = 25 °C, as specified in Table 7 of the datasheet. This low leakage ensures minimal error in high-impedance reference divider networks and supports accurate biasing in precision analog circuits without significant current draw.
Is Pin 2 electrically connected internally?
No, Pin 2 is explicitly designated "n.c." (not connected) in Table 2 and the simplified outline diagram. It is an unconnected mechanical terminal with no internal bond wire or silicon connection, and must be left floating on the PCB-no routing, grounding, or termination is required or recommended.
How does the +4.0 mV/K temperature coefficient affect regulation stability?
The +4.0 mV/K coefficient means VZ increases by approximately 4 mV per degree Celsius rise in junction temperature at IZ = 5 mA. In a 7.5 V reference, this yields ~0.053% per °C drift, which is manageable in thermally stabilized environments but requires derating or compensation in high-ambient applications like under-hood ECUs.
Can BZX84W-B7V5-QF replace older BZX84C7V5 in existing designs?
Yes, it can serve as a direct functional upgrade: both share SOT323 package, 7.5 V nominal rating, and 275 mW Ptot, but BZX84W-B7V5-QF adds AEC-Q101 qualification, tighter ±2% tolerance, and improved thermal resistance (455 K/W vs. typical 500+ K/W for legacy BZX84C). No layout change is needed.
BZX84W-B7V5-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):
- 7.5 V
- Tolerance:
- ±2%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5 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-B7V5-QF FAQ
1.How can I place an order for BZX84W-B7V5-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-B7V5-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-B7V5-QF reliable?
The price and inventory of BZX84W-B7V5-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-B7V5-QF is usually 5 days.
3.What payment methods are accepted for BZX84W-B7V5-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-B7V5-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-B7V5-QF?
BZX84W-B7V5-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-B7V5-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-B7V5-QF?
For technical support, including BZX84W-B7V5-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-B7V5-QF requirements.
6.How does Aetrix verify that BZX84W-B7V5-QF is sourced from the original manufacturer or authorized distributors?
All BZX84W-B7V5-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-B7V5-QF meets industry standards.
7.What is the process for return or replacement of BZX84W-B7V5-QF?
All BZX84W-B7V5-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-B7V5-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-B7V5-QF part is unused and in its original packaging.
Return procedure for BZX84W-B7V5-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-B7V5-QF Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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