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Nexperia USA Inc. BZX84W-C2V7X
- Part No.:
- BZX84W-C2V7X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C2V7X.pdf
- Description:
- DIODE ZENER 2.7V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:5,763
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Product details
Overview
BZX84W-C2V7X from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 2.7 V nominal Zener voltage at 5 mA, 275 mW total power dissipation, and 20 µA reverse current at 1 V, used for precision low-voltage regulation in compact power rails and reference circuits.
For engineers reviewing the BZX84W-C2V7X datasheet, BZX84W-C2V7X pinout, BZX84W-C2V7X application, or BZX84W-C2V7X equivalent, this page delivers verified Zener voltage, differential resistance (≤600 Ω), temperature coefficient (−2.0 mV/K), thermal resistance (455 K/W), and SOT323 terminal mapping to support accurate circuit modeling and board layout.
Technical Context
This Zener diode operates in reverse breakdown with a tightly controlled 2.7 V nominal working voltage (±5 % tolerance) and exhibits a negative temperature coefficient of −2.0 mV/K at 5 mA, enabling stable low-voltage references across ambient temperatures from −55 °C to +150 °C.
Its 600 Ω maximum differential resistance at 1 mA and 100 Ω at 5 mA ensures predictable dynamic impedance behavior under varying load currents, while its 20 µA reverse leakage at VR = 1 V supports low-power standby regulation without excessive quiescent loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.7 V nominal at IZ = 5 mA; defines precise clamping/reference level in low-voltage analog and digital supply monitoring. |
| Tolerance | ±5 % ('C' grade); allows predictable worst-case voltage deviation for margining in 3.3 V or 2.8 V rail supervision. |
| Differential Resistance (rdif) | ≤600 Ω at IZ = 1 mA; limits output voltage variation under small-signal load transients. |
| Reverse Current (IR) | 20 µA at VR = 1 V; ensures minimal leakage-induced error in high-impedance bias networks. |
| Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 PCB; sets maximum continuous Zener current to ~102 mA at 2.7 V. |
| Thermal Resistance (Rth(j-a)) | 455 K/W; determines junction temperature rise (~125 °C at full Ptot), critical for reliability in sealed enclosures. |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA; enables use as low-drop rectifier or ESD clamp in bidirectional protection schemes. |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package: 1.35 mm × 1.75 mm footprint, 0.65 mm lead pitch, 0.9 mm max height, optimized for high-density PCB layouts and reflow soldering per IPC-7095.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connected to lower-potential node in reverse-bias configuration; must be held ≤2.7 V below cathode to maintain regulation. |
| 2 | Not Connected (n.c.) | Internally unconnected; no PCB trace or solder pad required-must remain floating to avoid parasitic coupling. |
| 3 | Cathode (K) | Connected to regulated output or reference node; carries full Zener current and defines voltage reference point. |
Key Features
| Feature | Design Value |
|---|---|
| Low-leakage Zener operation | 20 µA IR at 1 V enables use in micropower sensor biasing and battery-monitoring circuits. |
| Negative temperature coefficient | −2.0 mV/K stabilizes reference voltage drift over temperature, improving accuracy in non-compensated systems. |
| High-frequency suitability | 6 pF diode capacitance at 1 MHz supports noise filtering and RF decoupling up to ~250 MHz. |
| Robust surge handling | 40 W non-repetitive peak reverse power (100 µs pulse) protects against ESD and transient overvoltage events. |
Applications
| Low-Voltage Reference Source | Microcontroller Reset Supervision |
|---|---|
|
Use Scenario: Providing a stable 2.7 V reference for ADC voltage dividers or comparator thresholds in portable IoT sensors. IC Role / Device Role / Timing Role: Zener diode acts as passive two-terminal voltage reference, replacing higher-cost bandgap ICs where ±5 % accuracy suffices. Use Value: Enables sub-1 µA standby current operation while maintaining 2.7 V threshold accuracy across −40 °C to +85 °C ambient range. |
Use Scenario: Monitoring 3.3 V system supply to trigger microcontroller reset when voltage drops below 2.7 V. IC Role / Device Role / Timing Role: Functions as precision undervoltage detection element in discrete reset generator circuits. Use Value: Delivers deterministic 2.7 V trip point with <10 µs response to supply sag, avoiding false resets during brief transients. |
| ESD Protection Clamp | Low-Power Bias Network Stabilizer |
|
Use Scenario: Placed across I/O lines of USB or UART interfaces to shunt ESD pulses to ground. IC Role / Device Role / Timing Role: Acts as bidirectional transient voltage suppressor leveraging forward conduction (VF ≤ 0.9 V) and reverse Zener action (2.7 V). Use Value: Clamps ±8 kV contact ESD (IEC 61000-4-2) with <1 ns response and no latch-up risk due to low energy rating. |
Use Scenario: Setting bias point for JFET amplifiers or op-amp input stages in battery-powered instrumentation. IC Role / Device Role / Timing Role: Provides low-noise, low-drift DC bias voltage independent of supply variations. Use Value: Reduces bias drift to <0.1 %/°C via matched −2.0 mV/K coefficient, eliminating need for trimming resistors. |
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 | ±2 % tolerance (tighter), identical VZ, same SOT323 package and pinout. | Required where 2.7 V reference stability must stay within ±0.054 V across temperature and life. | Select when absolute voltage accuracy outweighs cost sensitivity; otherwise BZX84W-C2V7X offers optimal balance. |
| MMSZ4678T1G | 2.7 V nominal, ±5 %, SOD-123 package (larger), 500 mW Ptot, 100 Ω rdif at 20 mA. | Better thermal performance but occupies 3× PCB area; suited for higher-current regulation (>50 mA). | Choose only if board space permits larger footprint and higher power handling is needed-otherwise SOT323 remains superior for density. |
Compared with BZX84W-B2V7, the C-grade offers relaxed tolerance at lower cost and identical form factor; versus MMSZ4678T1G, BZX84W-C2V7X delivers equivalent regulation in half the footprint with adequate 275 mW dissipation for most signal-level applications.
Availability
BZX84W-C2V7X is available at Aetrix Electronics and suitable for low-voltage reference design, microcontroller reset supervision, and ESD protection requiring stable component supply across industrial, consumer, and medical electronics programs.
Supply support for BZX84W-C2V7X 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 logic, discrete, and MOSFET solutions, headquartered in Nijmegen, Netherlands.
The BZX84W series belongs to Nexperia's general-purpose Zener diode product line, engineered for compact, cost-effective voltage regulation and reference functions in space-constrained consumer and industrial PCBs.
FAQ
What is the maximum continuous Zener current for BZX84W-C2V7X at 25 °C?
The maximum continuous Zener current is calculated as Ptot/VZ = 275 mW / 2.7 V ≈ 102 mA. However, derating is required above 25 °C ambient due to Rth(j-a) = 455 K/W; at 70 °C ambient, usable current drops to ~65 mA to maintain Tj ≤ 150 °C.
Can BZX84W-C2V7X be used in forward-bias mode as a standard diode?
Yes-it exhibits ≤0.9 V forward voltage at 10 mA, making it suitable for low-current rectification or polarity protection. However, its 200 mA absolute maximum forward current (IF) and lack of fast-recovery optimization limit use to <1 MHz switching; Schottky diodes are preferred for higher-speed applications.
How does the 'C' suffix differ from 'B' in the BZX84W naming convention?
The 'C' denotes ±5 % Zener voltage tolerance (e.g., 2.565 V to 2.835 V at 25 °C), while 'B' indicates ±2 % (2.646 V to 2.754 V). Both share identical package, thermal specs, and pinout; 'C' is selected for cost-sensitive designs where tighter regulation is unnecessary.
Is BZX84W-C2V7X automotive qualified?
No-this part is non-automotive qualified per Nexperia's revision history (Rev. 2, Jan 2023). It lacks AEC-Q101 stress testing and is not recommended for safety-critical vehicle systems. For automotive use, select the BZX84W-Q series variants explicitly marked with '-Q' suffix.
BZX84W-C2V7X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84W
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.7 V
- Tolerance:
- ±5%
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84W-C2V7X FAQ
1.How can I place an order for BZX84W-C2V7X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C2V7X 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-C2V7X reliable?
The price and inventory of BZX84W-C2V7X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-C2V7X is usually 5 days.
3.What payment methods are accepted for BZX84W-C2V7X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C2V7X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C2V7X?
BZX84W-C2V7X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C2V7X 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-C2V7X?
For technical support, including BZX84W-C2V7X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C2V7X requirements.
6.How does Aetrix verify that BZX84W-C2V7X is sourced from the original manufacturer or authorized distributors?
All BZX84W-C2V7X 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-C2V7X meets industry standards.
7.What is the process for return or replacement of BZX84W-C2V7X?
All BZX84W-C2V7X units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C2V7X, 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-C2V7X part is unused and in its original packaging.
Return procedure for BZX84W-C2V7X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C2V7X Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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