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Nexperia USA Inc. BZX84W-C7V5-QF
- Part No.:
- BZX84W-C7V5-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C7V5-QF.pdf
- Description:
- DIODE ZENER 7.45V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:9,542
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Product details
Overview
BZX84W-C7V5-QF from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 7.5 V nominal Zener voltage at IZ = 5 mA, 275 mW total power dissipation, and qualified to AEC-Q101 for automotive use. It provides stable voltage reference in compact power management and signal conditioning circuits.
For engineers reviewing the BZX84W-C7V5-QF datasheet, BZX84W-C7V5-QF pinout, BZX84W-C7V5-QF application, or BZX84W-C7V5-QF equivalent, this page delivers verified electrical parameters, automotive-grade thermal performance, SOT323 terminal mapping, and real-world regulation use cases - all extracted from Nexperia's official Rev. 1 product data sheet dated 19 November 2021.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal Zener voltage of 7.5 V (±5 %), differential resistance of 80 Ω at IZ = 5 mA, and a positive temperature coefficient of +4.0 mV/K at the same current. Its low 1 µA reverse leakage at VR = 5 V ensures minimal quiescent current in precision bias networks.
Designed for surface-mount reliability, it features a 150 °C maximum junction temperature, 455 K/W junction-to-ambient thermal resistance on FR4 PCB, and non-repetitive peak reverse power capability of 40 W for 100 µs pulses - enabling robust transient suppression in automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5 V nominal at IZ = 5 mA; ±5 % tolerance ensures predictable clamping in 5–9 V supply rails. |
| Differential Resistance (rdif) | 80 Ω max at IZ = 5 mA; maintains tight regulation under load variation in feedback paths. |
| Reverse Leakage (IR) | 1 µA max at VR = 5 V; minimizes error current in high-impedance reference nodes. |
| Total Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on standard FR4; supports continuous operation in space-constrained automotive modules. |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA; enables bidirectional protection when used with series diodes. |
| Temperature Coefficient (SZ) | +4.0 mV/K at IZ = 5 mA; compensates for ambient drift in engine control unit (ECU) sensor interfaces. |
| Junction Temperature (Tj) | 150 °C max; meets under-hood thermal requirements per AEC-Q101 stress qualification. |
Pinout & Package
SOT323 (SC-70) leadless surface-mount plastic package: 1.35 mm × 1.85 mm footprint, 0.65 mm pitch, 0.45 mm height; optimized for reflow soldering with defined land pattern per Figure 9.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node during regulation or protection operation. |
| 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 output or voltage reference point in shunt configuration. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensors. |
| ±5 % Zener tolerance | Enables cost-effective voltage referencing where tighter tolerances are not required, e.g., overvoltage flagging. |
| Low 150 pF capacitance | Preserves signal integrity in high-frequency applications such as CAN bus termination or RF detector biasing. |
| 200 mA forward current rating | Supports dual-role use as both Zener regulator and forward rectifier in low-power auxiliary circuits. |
| Non-repetitive 40 W surge capability | Withstands ESD transients and load-dump spikes without degradation in 12 V automotive systems. |
Applications
| Automotive Sensor Biasing | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Providing stable 7.5 V reference to analog front-end of pressure or temperature sensors in engine bay modules. IC Role / Device Role / Timing Role: Shunt voltage reference diode maintaining constant bias across sensor Wheatstone bridge. Use Value: Enables <1 % measurement error over −40 °C to +125 °C ambient due to +4.0 mV/K temperature coefficient matching. |
Use Scenario: Clamping USB VBUS line against 12 V load-dump surges in vehicle infotainment head units. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between VBUS and ground, triggered above 7.5 V. Use Value: Limits peak voltage to ≤8.5 V during 40 W/100 µs transients, protecting USB PHY ICs per ISO 7637-2. |
| Industrial PLC Input Conditioning | Smart Lighting LED Driver Reference |
Use Scenario: Regulating 7.5 V rail for optocoupler input stages in 24 V DC industrial programmable logic controllers. IC Role / Device Role / Timing Role: Precision shunt regulator stabilizing current-limiting resistor network feeding phototransistor base. Use Value: Maintains consistent optocoupler CTR across supply variations, ensuring reliable digital input detection. |
Use Scenario: Setting reference voltage for current-sense amplifier in constant-current LED driver for automotive DRLs. IC Role / Device Role / Timing Role: Zener-based voltage reference generating feedback threshold for LM3407 or similar LED controller. Use Value: Delivers ±5 % accuracy over lifetime, supporting <5 % LED brightness tolerance in safety-critical lighting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-B7V5-Q | ±2 % tolerance (vs. ±5 %); 80 Ω rdif identical; same SOT323 package and thermal specs. | Used where tighter voltage accuracy is required, e.g., ADC reference buffers or precision comparators. | Select when system-level calibration is impractical and initial tolerance dominates error budget. |
| MMSZ5236B-TP | 7.5 V ±5 %, but SOD-123 package; 500 mW Ptot; higher 100 Ω rdif; no AEC-Q101 qualification. | Suitable for consumer-grade power supplies where automotive reliability is not mandated. | Choose only for cost-sensitive non-automotive designs requiring higher power margin and larger board area. |
Compared with BZX84W-C7V5-QF, the BZX84W-B7V5-Q offers tighter tolerance at identical thermal and surge performance, while MMSZ5236B-TP trades AEC-Q101 compliance and compactness for higher power handling in non-automotive contexts.
Availability
BZX84W-C7V5-QF is available at Aetrix Electronics and suitable for automotive sensor biasing, USB port overvoltage protection, and industrial PLC input conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX84W-C7V5-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 essential efficiency-enhancing components, with leadership in logic, discrete, and MOSFET technologies for automotive, industrial, and mobile markets.
The BZX84W-Q series belongs to Nexperia's automotive-qualified Zener diode portfolio, engineered specifically for robust voltage regulation and transient suppression in harsh-environment electronic control units.
FAQ
What is the maximum reverse voltage before breakdown for BZX84W-C7V5-QF?
The nominal Zener voltage is 7.5 V at IZ = 5 mA, with guaranteed minimum and maximum values of 7.0 V and 7.9 V respectively under those test conditions. Breakdown begins within this band and is not a sharp threshold; operation below 7.0 V yields negligible reverse current (<1 µA at 5 V).
Can BZX84W-C7V5-QF be used in parallel for higher power dissipation?
No - Zener diodes exhibit negative temperature coefficients at low voltages and positive above ~5.6 V, but manufacturing spread in VZ and rdif prevents balanced current sharing. Parallel connection risks thermal runaway; derating or heatsinking the single device is preferred.
Is pin 2 (n.c.) electrically isolated or internally bonded?
Pin 2 is fully not connected: no internal bond wire, die attachment, or metallization links it to the silicon die. It serves only as a mechanical anchor and must remain unconnected on the PCB to prevent unintended coupling or solder bridging.
How does the +4.0 mV/K temperature coefficient affect regulation stability?
The positive coefficient means VZ increases by ~4 mV per °C rise in junction temperature. At 125 °C ambient (with self-heating), VZ rises ~400 mV above its 25 °C value - a known, linear offset that can be compensated in closed-loop systems or accepted in non-precision applications.
BZX84W-C7V5-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):
- 7.45 V
- Tolerance:
- ±6.04%
- 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-C7V5-QF FAQ
1.How can I place an order for BZX84W-C7V5-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C7V5-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-C7V5-QF reliable?
The price and inventory of BZX84W-C7V5-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-C7V5-QF is usually 5 days.
3.What payment methods are accepted for BZX84W-C7V5-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C7V5-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C7V5-QF?
BZX84W-C7V5-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C7V5-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-C7V5-QF?
For technical support, including BZX84W-C7V5-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C7V5-QF requirements.
6.How does Aetrix verify that BZX84W-C7V5-QF is sourced from the original manufacturer or authorized distributors?
All BZX84W-C7V5-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-C7V5-QF meets industry standards.
7.What is the process for return or replacement of BZX84W-C7V5-QF?
All BZX84W-C7V5-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C7V5-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-C7V5-QF part is unused and in its original packaging.
Return procedure for BZX84W-C7V5-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C7V5-QF Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
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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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