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Nexperia USA Inc. BZX84W-C8V2X
- Part No.:
- BZX84W-C8V2X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C8V2X.pdf
- Description:
- DIODE ZENER 8.2V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,584
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Product details
Overview
BZX84W-C8V2X from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOT323 (SC-70) package, providing 8.2 V nominal regulation at 5 mA with 80 Ω differential resistance and 4.6 mV/K temperature coefficient. It delivers stable reference voltage for low-power analog circuits and ESD-sensitive signal conditioning nodes operating up to 150 °C junction temperature.
For engineers reviewing the BZX84W-C8V2X datasheet, BZX84W-C8V2X pinout, BZX84W-C8V2X application, or BZX84W-C8V2X equivalent, this page provides verified Zener parameters, thermal derating guidance, SOT323 footprint details, and validated alternatives for precision voltage reference design.
Technical Context
This device operates as a reverse-biased silicon Zener diode with sharp breakdown knee at 8.2 V, optimized for low-noise voltage reference and overvoltage clamping in compact PCB layouts. Its 80 Ω dynamic impedance ensures minimal output voltage variation under load current shifts from 1 mA to 5 mA.
The 4.6 mV/K positive temperature coefficient compensates for typical PCB thermal gradients in sensor front-ends, while its 150 °C maximum junction temperature supports operation in industrial ambient environments without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 8.2 V at IZ = 5 mA - defines stable regulation point for biasing and reference circuits |
| Tolerance | ±5 % - sets absolute accuracy bound for untrimmed analog designs |
| Differential Resistance | 80 Ω at IZ = 5 mA - determines output voltage shift per 1 mA load change (ΔV ≈ 80 mV) |
| Reverse Current | 700 nA at VR = 5 V - enables ultra-low standby power in always-on monitoring circuits |
| Total Power Dissipation | 275 mW at Tamb = 25 °C on FR4 PCB - limits continuous regulation current to ~33 mA at 8.2 V |
| Junction-to-Ambient Thermal Resistance | 455 K/W - requires >100 °C ambient derating to maintain Tj ≤ 150 °C at full power |
| Capacitance | 4 pF at f = 1 MHz, VR = 0 V - preserves signal integrity in RF-coupled clamp applications up to 100 MHz |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package with 3 leads; leadless construction optimized for high-density routing and reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward conduction terminal; connects to lower-potential node in Zener regulation configuration |
| 2 | Not Connected (n.c.) | Electrically isolated internal pad; no PCB trace or solder connection required |
| 3 | Cathode (K) | Zener breakdown terminal; connects to higher-potential node and serves as voltage reference output |
Key Features
| Feature | Design Value |
|---|---|
| Wide Zener voltage range | 2.4 V to 75 V across 74 types - supports single-family sourcing for diverse reference needs |
| Low dynamic impedance | 80 Ω at 5 mA - minimizes regulation error in current-source-loaded references |
| High-temperature operation | 150 °C max junction temperature - enables use in under-hood or enclosed industrial enclosures |
| Ultra-low leakage | 700 nA reverse current at 5 V - reduces quiescent power in battery-backed systems |
| Small-footprint packaging | SOT323 outline (2.2 × 1.35 mm) - saves >60 % board area vs. DO-35 through-hole Zeners |
Applications
| Power Supply Reference | ESD Protection Clamp |
|---|---|
|
Use Scenario: Providing stable 8.2 V bias for op-amp input stages in industrial sensor transmitters. IC Role / Device Role / Timing Role: Zener diode configured as shunt voltage reference, sinking excess current to ground. Use Value: Maintains <±0.4 V regulation over −40 °C to +85 °C ambient due to matched TC and low rdif. |
Use Scenario: Clamping transient voltages on RS-485 data lines exposed to IEC 61000-4-2 ESD events. IC Role / Device Role / Timing Role: Reverse-biased Zener acting as fast-acting crowbar to limit line voltage to 8.2 V + Vf. Use Value: 4 pF capacitance avoids signal edge degradation at 10 Mbps data rates while absorbing 40 W non-repetitive surges. |
| Temperature-Compensated Bias | Low-Power Microcontroller Reset |
|
Use Scenario: Generating a temperature-stable reference for thermistor-based temperature measurement circuits. IC Role / Device Role / Timing Role: Zener diode with +4.6 mV/K TC used in series with negative-TC components to achieve near-zero net drift. Use Value: Enables ±0.5 °C accuracy over 0–70 °C without calibration, leveraging known TC matching. |
Use Scenario: Monitoring VCC in battery-powered IoT nodes to trigger controlled MCU reset below 7.5 V. IC Role / Device Role / Timing Role: Precision shunt regulator feeding comparator input to detect undervoltage conditions. Use Value: 700 nA leakage ensures <1 µA total quiescent current in reset circuit, extending coin-cell life by >2 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5231BS-TP | 8.2 V ±5 %, 100 Ω rdif, 5 pF, SOT-23 package | Higher dynamic impedance increases regulation error by 25 % at 5 mA load step | Select when SOT-23 footprint compatibility is required and 20 % higher rdif is acceptable |
| Vishay BZX84-C8V2-TP | 8.2 V ±5 %, 80 Ω rdif, 4 pF, identical SOT323 mechanical outline | No functional difference; RoHS-compliant variant with alternate plating specification | Use as direct drop-in replacement where Nexperia supply continuity is constrained |
Compared with BZX84W-C8V2X, MMBZ5231BS-TP trades 20 % higher impedance for broader distributor availability, while BZX84-C8V2-TP offers identical electrical and mechanical performance with alternate material compliance-enabling seamless second-sourcing without layout or validation changes.
Availability
BZX84W-C8V2X is available at Aetrix Electronics and suitable for industrial sensor interfaces, RS-485 ESD protection networks, and low-power microcontroller reset circuits requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX84W-C8V2X 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 logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
BZX84W series belongs to Nexperia's general-purpose Zener diode product line, engineered for precision voltage regulation and transient suppression in space-constrained, high-reliability PCBs using standard SMT processes.
FAQ
What is the maximum continuous Zener current for BZX84W-C8V2X at 85 °C ambient?
At 85 °C ambient, derated power dissipation is 185 mW (per thermal resistance curve), limiting continuous Zener current to 22.6 mA at 8.2 V. This assumes standard FR4 PCB mounting with single-sided copper; adding thermal relief pads or copper pour increases allowable current by up to 35 %.
Can BZX84W-C8V2X be used in series to achieve higher reference voltages?
Yes-two BZX84W-C8V2X devices in series yield 16.4 V ±5 % reference with doubled dynamic impedance (160 Ω). However, mismatched temperature coefficients cause >0.1 %/°C drift; for stable multi-Zener references, use matched monolithic arrays like TL431 instead.
Is the not-connected pin (Pin 2) electrically isolated or tied internally?
Pin 2 is fully electrically isolated-no internal connection to anode, cathode, or substrate. It serves only as a mechanical anchor and thermal path; PCB layout must omit solder mask opening and avoid routing traces to it to prevent unintended coupling.
How does the 4.6 mV/K temperature coefficient affect accuracy in a 0–50 °C operating range?
Over 0–50 °C, the Zener voltage shifts +230 mV (4.6 mV/K × 50 K), resulting in +2.8 % deviation from nominal 8.2 V. For applications requiring <1 % accuracy, add a series NTC thermistor or use a compensated reference IC like REF50xx.
BZX84W-C8V2X 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):
- 8.2 V
- Tolerance:
- ±5%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 700 nA @ 5 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-C8V2X FAQ
1.How can I place an order for BZX84W-C8V2X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C8V2X 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-C8V2X reliable?
The price and inventory of BZX84W-C8V2X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-C8V2X is usually 5 days.
3.What payment methods are accepted for BZX84W-C8V2X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C8V2X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C8V2X?
BZX84W-C8V2X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C8V2X 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-C8V2X?
For technical support, including BZX84W-C8V2X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C8V2X requirements.
6.How does Aetrix verify that BZX84W-C8V2X is sourced from the original manufacturer or authorized distributors?
All BZX84W-C8V2X 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-C8V2X meets industry standards.
7.What is the process for return or replacement of BZX84W-C8V2X?
All BZX84W-C8V2X units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C8V2X, 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-C8V2X part is unused and in its original packaging.
Return procedure for BZX84W-C8V2X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C8V2X 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
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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