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Nexperia USA Inc. BZX84W-C2V7-QF
- Part No.:
- BZX84W-C2V7-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C2V7-QF.pdf
- Description:
- DIODE ZENER 2.7V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:9,540
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Product details
Overview
BZX84W-C2V7-QF from Nexperia is a ±5 % tolerance Zener diode in SOT323 (SC-70) package, rated for 2.7 V nominal regulation at 5 mA, with 20 µA reverse leakage at 1 V and 275 mW total power dissipation on FR4 PCB. It serves as a precision voltage reference or clamp in low-power automotive sensor signal conditioning circuits.
For engineers reviewing the BZX84W-C2V7-QF datasheet, BZX84W-C2V7-QF pinout, BZX84W-C2V7-QF application, or BZX84W-C2V7-QF equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (455 K/W), differential resistance (≤100 Ω), AEC-Q101 qualification, and SC-70 footprint compatibility with high-frequency layout constraints.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage under varying load current, with temperature coefficient of −2.0 mV/K at 5 mA. Its low 20 µA reverse leakage at VR = 1 V enables accurate biasing in low-current analog front-ends.
The device uses silicon planar epitaxial construction and is qualified per AEC-Q101 for automotive use, supporting operation from −55 °C to +150 °C ambient. Thermal resistance from junction to ambient is 455 K/W on standard FR4 PCB, limiting continuous power handling to 275 mW at 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.7 V nominal at IZ = 5 mA; ±5 % tolerance ensures regulation within 2.50–2.90 V across production lot |
| Reverse Leakage (IR) | 20 µA max at VR = 1 V; enables low-error bias networks in microamp-level sensor interfaces |
| Differential Resistance (rdiff) | ≤100 Ω at IZ = 5 mA; maintains voltage stability against load current shifts up to ±1 mA |
| Power Dissipation (Ptot) | 275 mW max on FR4 PCB; defines maximum continuous Zener current of ~102 mA at 2.7 V |
| Temperature Coefficient (SZ) | −2.0 mV/K at IZ = 5 mA; supports predictable drift compensation in automotive cabin temperature ranges |
| Junction Temperature (Tj) | 150 °C max; allows operation in engine bay environments when derated per thermal resistance |
| Package | SOT323 (SC-70); 1.3 mm × 1.8 mm footprint with 0.65 mm pitch, compatible with automated reflow assembly |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package with three terminals: anode (Pin 1), not connected (Pin 2), cathode (Pin 3). The n.c. terminal isolates internal die structure and must remain unconnected in PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node in Zener regulation configuration |
| 2 | Not Connected (n.c.) | Internally unconnected metal pad; no electrical function-must be left floating on PCB |
| 3 | Cathode (K) | Reverse-biased terminal; connects to higher-potential node and carries Zener current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and body electronics |
| ±5 % Zener voltage tolerance | Enables cost-effective voltage clamping where tight regulation is secondary to reliability |
| Low 20 µA reverse leakage at 1 V | Reduces quiescent error in precision voltage divider networks for ADC reference scaling |
| SC-70 package with n.c. pin | Minimizes parasitic capacitance (<6 pF) for stable performance in >100 MHz signal paths |
| 455 K/W thermal resistance | Supports thermal design on standard FR4 without copper pour extensions in space-constrained modules |
Applications
| Automotive Cabin Sensors | Industrial Signal Conditioning |
|---|---|
Use Scenario: Voltage clamping for thermistor-based cabin temperature sensing circuit operating from 3.3 V rail. IC Role / Device Role / Timing Role: Zener diode provides overvoltage protection and reference stabilization for op-amp input stage. Use Value: 2.7 V regulation with −2.0 mV/K TC matches thermistor drift profile, reducing calibration burden across −40 °C to +85 °C. | Use Scenario: Bias voltage generation for current-sense amplifier in 24 V industrial PLC I/O module. IC Role / Device Role / Timing Role: Zener establishes stable 2.7 V reference for amplifier offset nulling network. Use Value: 20 µA leakage at 1 V ensures <0.1 % gain error contribution in µA-range sense current paths. |
| USB-C Power Negotiation | Medical Wearable Sensor Front-End |
Use Scenario: Overvoltage clamp on CC line during USB PD communication handshake. IC Role / Device Role / Timing Role: Fast-response Zener limits transient spikes to protect Type-C controller GPIO. Use Value: SC-70 footprint and <6 pF capacitance preserve signal integrity up to 300 kHz PD messaging frequency. | Use Scenario: Low-noise voltage reference for ECG electrode bias circuit in battery-powered patch monitor. IC Role / Device Role / Timing Role: Zener supplies regulated 2.7 V to instrumentation amplifier common-mode driver. Use Value: 275 mW power rating allows safe operation at 5 mA bias while maintaining <1 µV RMS noise floor. |
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), lower rdiff (≤100 Ω), same package and AEC-Q101 rating | Preferred where tighter regulation is required for feedback loops or comparator thresholds | Select when voltage accuracy outweighs cost sensitivity; requires tighter board-level calibration margin |
| MMSZ4678T1G | 2.7 V ±5 %, SOD-123 package, 500 mW Ptot, no AEC-Q101 qualification | Suitable for consumer-grade power rails but not automotive under-hood deployment | Choose only for non-automotive designs requiring higher power headroom and larger thermal mass |
Compared with BZX84W-C2V7-QF, the BZX84W-B2V7-Q offers tighter voltage control at identical thermal and automotive qualifications, while MMSZ4678T1G trades qualification and footprint for higher power capacity-making the original optimal for space-constrained, AEC-compliant 2.7 V clamping.
Availability
BZX84W-C2V7-QF is available at Aetrix Electronics and suitable for automotive cabin electronics, industrial sensor signal chains, and USB-C power interface protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX84W-C2V7-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 technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and mobile markets.
The BZX84W-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for robust voltage regulation and transient suppression in automotive subsystems operating under harsh thermal and vibration conditions.
FAQ
What is the maximum continuous Zener current for BZX84W-C2V7-QF at 25 °C ambient?
The device has a total power dissipation limit of 275 mW on FR4 PCB. At its nominal 2.7 V Zener voltage, this corresponds to a maximum continuous Zener current of approximately 102 mA (275 mW ÷ 2.7 V), assuming no additional thermal derating is applied.
Is Pin 2 electrically functional, and what happens if it is soldered to ground?
No-Pin 2 is internally not connected (n.c.) and serves only as a mechanical anchor. Soldering it to ground creates an unintended short path through the PCB copper, potentially disrupting adjacent traces or causing assembly defects; it must remain unconnected per Nexperia's package specification.
How does the −2.0 mV/K temperature coefficient affect regulation accuracy over automotive temperature range?
Across −40 °C to +125 °C ambient, the Zener voltage shifts by up to −330 mV (−2.0 mV/K × 165 K), resulting in a worst-case regulation of ~2.37 V. This drift is predictable and can be compensated in system-level calibration, especially in closed-loop sensor interfaces.
Can BZX84W-C2V7-QF replace older BZX84-C2V7 in existing designs?
Yes-BZX84W-C2V7-QF is a direct drop-in replacement with identical Zener voltage, tolerance, and polarity. It improves upon legacy BZX84-C2V7 with AEC-Q101 qualification, tighter thermal resistance spec (455 K/W vs. typical 500+ K/W), and optimized SC-70 footprint for modern high-density layouts.
BZX84W-C2V7-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):
- 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-QF FAQ
1.How can I place an order for BZX84W-C2V7-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C2V7-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-C2V7-QF reliable?
The price and inventory of BZX84W-C2V7-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-C2V7-QF is usually 5 days.
3.What payment methods are accepted for BZX84W-C2V7-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C2V7-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C2V7-QF?
BZX84W-C2V7-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C2V7-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-C2V7-QF?
For technical support, including BZX84W-C2V7-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C2V7-QF requirements.
6.How does Aetrix verify that BZX84W-C2V7-QF is sourced from the original manufacturer or authorized distributors?
All BZX84W-C2V7-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-C2V7-QF meets industry standards.
7.What is the process for return or replacement of BZX84W-C2V7-QF?
All BZX84W-C2V7-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C2V7-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-C2V7-QF part is unused and in its original packaging.
Return procedure for BZX84W-C2V7-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C2V7-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
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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
Micro Commercial Co
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BZT52C3V6LP-7
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SMAZ12-13-F
Diodes Incorporated
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