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Nexperia USA Inc. BZX84W-C2V7-QX
- Part No.:
- BZX84W-C2V7-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C2V7-QX.pdf
- Description:
- DIODE ZENER 2.7V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:5,171
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Product details
Overview
BZX84W-C2V7-QX from Nexperia is a ±5 % tolerance Zener diode in SOT323 (SC-70) package, rated for 2.7 V nominal regulation voltage at 5 mA, with 20 µA reverse leakage at 1 V, 275 mW total power dissipation, and qualified to AEC-Q101 for automotive voltage reference and clamping applications.
For engineers reviewing the BZX84W-C2V7-QX datasheet, BZX84W-C2V7-QX pinout, BZX84W-C2V7-QX application, or BZX84W-C2V7-QX equivalent, this part serves as a precision low-voltage shunt regulator in power supply feedback loops, overvoltage protection circuits, and ESD-tolerant signal-level clamping where tight tolerance and automotive-grade reliability are required.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable DC voltage across its terminals under varying load and input conditions. Its 2.7 V nominal Zener voltage is specified at IZ = 5 mA with ±5 % tolerance, and exhibits a negative temperature coefficient of −2.0 mV/K at that current, enabling predictable thermal drift behavior in bias networks.
The device features a differential resistance of ≤100 Ω at 5 mA, ensuring minimal output impedance during regulation, and supports non-repetitive surge currents up to 40 W (100 µs pulse), making it suitable for transient suppression in compact automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.7 V nominal at IZ = 5 mA; defines regulated output level in shunt reference circuits |
| Tolerance | ±5 %; ensures voltage accuracy within 2.565–2.835 V at 25 °C for production consistency |
| Reverse Leakage (IR) | 20 µA max at VR = 1 V; limits standby current in low-power bias networks |
| Total Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 PCB; sets maximum continuous DC power handling |
| Differential Resistance (rdiff) | ≤100 Ω at IZ = 5 mA; determines regulation stiffness and load-induced voltage variation |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA; enables use as low-drop rectifier or polarity protection element |
| Junction Temperature (Tj) | −55 °C to +150 °C operating range; supports under-hood automotive environments |
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 soldering profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connected to lower-potential node in reverse-bias regulation; carries forward current when used as rectifier |
| 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 node; defines Zener breakdown direction and polarity of clamping action |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use per stress test requirements including HTGB, HTRB, and temperature cycling |
| Low-leakage Zener operation | 20 µA max reverse current at 1 V enables stable biasing in ultra-low-current sensor interfaces |
| Compact SOT323 package | Enables high-density placement in space-constrained modules such as ADAS camera ECUs and body control units |
| Wide voltage range support | Part of 74-type series spanning 2.4 V to 75 V, allowing standardized layout reuse across multiple regulation points |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating reference voltage for microcontroller ADC inputs monitoring door lock status and window position sensors. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 2.7 V bias to op-amp comparators and analog front-end circuitry. Use Value: ±5 % tolerance and −2.0 mV/K tempco ensure <±15 mV drift over −40 °C to +125 °C ambient, maintaining measurement accuracy without calibration. |
Use Scenario: Clamping 0–3.3 V analog outputs from MEMS pressure sensors to prevent overvoltage damage to downstream ADCs. IC Role / Device Role / Timing Role: Low-capacitance (6 pF) Zener clamp limiting signal swing to safe levels during ESD events or supply transients. Use Value: 20 µA leakage at 1 V avoids loading sensitive high-impedance sensor outputs while enabling fast transient response. |
| USB-C Power Delivery Feedback Loop | Consumer Audio Bias Network |
Use Scenario: Providing precise 2.7 V reference for error amplifier in adjustable buck converter controlling USB-C sink voltage. IC Role / Device Role / Timing Role: Precision shunt regulator setting feedback divider ratio in isolated DC-DC control loop. Use Value: 100 Ω differential resistance minimizes regulation error due to current-sense resistor tolerance and layout parasitics. |
Use Scenario: Generating stable bias point for Class AB headphone amplifier input stage in portable Bluetooth speakers. IC Role / Device Role / Timing Role: Low-noise DC reference source establishing quiescent operating point for dual-rail op-amps. Use Value: 275 mW power rating allows operation at 5 mA with margin for thermal derating on thin PCBs, avoiding thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-B2V7-Q | ±2 % tolerance (2.65–2.75 V), tighter regulation but higher cost and reduced availability | Preferred where absolute voltage accuracy dominates over cost and supply chain flexibility | Select when system-level calibration is impractical and initial tolerance directly impacts functional safety compliance |
| MMSZ4678T1G | 2.7 V ±5 %, SOD-123 package, 500 mW Ptot, 300 Ω rdiff, not AEC-Q101 qualified | Suitable for industrial/commercial designs lacking automotive qualification requirements | Choose for cost-sensitive non-automotive applications requiring higher power headroom and relaxed thermal constraints |
Compared with BZX84W-C2V7-QX, the BZX84W-B2V7-Q offers tighter voltage control at the expense of qualification and cost, while MMSZ4678T1G trades automotive reliability for higher power and larger footprint-making the QX variant optimal for space-constrained, safety-critical automotive voltage references.
Availability
BZX84W-C2V7-QX is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and consumer audio bias networks requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX84W-C2V7-QX 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 energy-efficient solutions.
The BZX84W-Q series belongs to Nexperia's automotive-grade Zener diode product line, engineered specifically for robust voltage regulation and clamping in harsh-environment electronic control units.
FAQ
What is the maximum continuous reverse current this Zener can handle at 2.7 V?
The BZX84W-C2V7-QX is rated for 275 mW total power dissipation at 25 °C ambient. At 2.7 V, this corresponds to a maximum continuous reverse current of approximately 102 mA (275 mW ÷ 2.7 V). Derating applies above 25 °C per the 455 K/W junction-to-ambient thermal resistance.
Is Pin 2 truly unused, or does it serve a mechanical or thermal function?
Pin 2 is electrically not connected (n.c.) per Nexperia's official pinning table and internal die construction. It has no electrical function and must remain unconnected on the PCB. While it contributes marginally to mechanical stability, it provides no thermal conduction path and should not be soldered or tied to ground or power planes.
How does the −2.0 mV/K temperature coefficient affect regulation in a 0–105 °C operating range?
With a −2.0 mV/K coefficient, the Zener voltage decreases by 210 mV over a 105 K rise (−2.0 × 105). Starting from 2.700 V at 25 °C, the voltage shifts to ~2.490 V at 105 °C. This predictable drift enables compensation in feedback networks or acceptance within system-level tolerance budgets for non-precision functions.
Can this device be used in forward-bias mode as a standard diode?
Yes-the BZX84W-C2V7-QX exhibits ≤0.9 V forward voltage at 10 mA, meeting typical silicon diode performance. It is routinely used in dual-role applications: reverse-bias for regulation/clamping and forward-bias for polarity protection or low-current rectification, leveraging its qualified automotive construction and small footprint.
BZX84W-C2V7-QX 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):
- 2.7 V
- Tolerance:
- ±7.41%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 20 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-C2V7-QX FAQ
1.How can I place an order for BZX84W-C2V7-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C2V7-QX 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-C2V7-QX reliable?
The price and inventory of BZX84W-C2V7-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-C2V7-QX is usually 5 days.
3.What payment methods are accepted for BZX84W-C2V7-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C2V7-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C2V7-QX?
BZX84W-C2V7-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C2V7-QX 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-C2V7-QX?
For technical support, including BZX84W-C2V7-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C2V7-QX requirements.
6.How does Aetrix verify that BZX84W-C2V7-QX is sourced from the original manufacturer or authorized distributors?
All BZX84W-C2V7-QX 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-C2V7-QX meets industry standards.
7.What is the process for return or replacement of BZX84W-C2V7-QX?
All BZX84W-C2V7-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C2V7-QX, 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-C2V7-QX part is unused and in its original packaging.
Return procedure for BZX84W-C2V7-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C2V7-QX 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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