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Nexperia USA Inc. BZX84W-B5V1F
- Part No.:
- BZX84W-B5V1F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-B5V1F.pdf
- Description:
- DIODE ZENER 5.1V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:424
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Product details
Overview
BZX84W-B5V1F from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 5.1 V nominal regulation at 5 mA, with 480 Ω differential resistance and −0.8 mV/K temperature coefficient, used for precision voltage reference and overvoltage protection in low-power analog circuits.
For engineers reviewing the BZX84W-B5V1F datasheet, BZX84W-B5V1F pinout, BZX84W-B5V1F application, or BZX84W-B5V1F equivalent, this page delivers verified Zener parameters, thermal limits, SOT323 terminal mapping, and direct alternatives for stable 5.1 V regulation in space-constrained designs.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 5.1 V reference across load variations, with tight ±2 % tolerance ensuring minimal drift in feedback networks. Its low 480 Ω differential resistance minimizes output voltage variation under changing current conditions.
The −0.8 mV/K temperature coefficient indicates near-zero thermal drift near room temperature, making it suitable for applications requiring stable regulation across −55 °C to +150 °C ambient range. It supports pulsed operation up to 40 W non-repetitive peak reverse power at 100 µs pulse width.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.00 V to 5.20 V at IZ = 5 mA - defines precise regulation point for feedback or clamping circuits |
| Tolerance | ±2 % - ensures consistent voltage accuracy without post-production trimming |
| Differential Resistance (rdif) | 480 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Temperature Coefficient (SZ) | −0.8 mV/K at IZ = 5 mA - enables stable reference performance across industrial temperature range |
| Reverse Current (IR) | 2 µA at VR = 2 V - confirms low leakage in standby or high-impedance bias networks |
| Total Power Dissipation (Ptot) | 275 mW on FR4 PCB - sets maximum continuous DC power handling in standard layout |
| Junction-to-Ambient Thermal Resistance | 455 K/W - defines temperature rise per watt in free-air mounting condition |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package with 3 terminals, leadless construction optimized for high-density PCB layouts and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node in Zener configuration |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating-no PCB trace or solder mask required |
| 3 | Cathode (K) | Reverse-biased terminal; connects to higher-potential node for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Wide voltage range coverage | 2.4 V to 75 V in E24 steps - supports design reuse across multiple regulation points |
| Two tolerance options | ±2 % (B-series) and ±5 % (C-series) - enables cost/performance trade-off selection |
| Low capacitance | 300 pF at 1 MHz, VR = 0 V - preserves signal integrity in high-frequency clamp or RF bias applications |
| High surge capability | 40 W non-repetitive peak reverse power at 100 µs - withstands transient overvoltage events |
| Industrial temperature rating | −55 °C to +150 °C operating range - qualified for extended-environment embedded systems |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Stabilizing output voltage in adjustable linear regulators (e.g., LM317) via resistive divider feedback network. IC Role / Device Role / Timing Role: Provides precise 5.1 V reference node that sets regulated output voltage. Use Value: ±2 % tolerance and −0.8 mV/K TC ensure <±1.5 % total output error across −40 °C to +85 °C. |
Use Scenario: Protecting microcontroller GPIO pins from ESD or inductive kickback in automotive body control modules. IC Role / Device Role / Timing Role: Shunts excess voltage above 5.1 V to ground before IC damage occurs. Use Value: 40 W non-repetitive surge rating absorbs 100 µs transients without degradation. |
| Low-Power Sensor Biasing | ADC Reference Stabilization |
Use Scenario: Supplying stable bias current to silicon photodiodes or thermistors in portable medical sensors. IC Role / Device Role / Timing Role: Acts as constant-current source when combined with series resistor. Use Value: 480 Ω rdif ensures <10 mV output shift over 1 mA load variation. |
Use Scenario: Providing clean 5.1 V reference for 12-bit SAR ADCs in industrial data loggers. IC Role / Device Role / Timing Role: Replaces noisy LDO output to reduce reference-induced quantization error. Use Value: 2 µA reverse leakage at 2 V prevents loading of high-impedance reference dividers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5222BS | 5.1 V ±5 %, 17 Ω rdif, 200 mW Ptot, SOT-323 | Higher precision not required; lower power dissipation limit | Select when tighter regulation is unnecessary and lower cost is prioritized over thermal margin |
| Vishay BZX84-C5V1 | 5.1 V ±5 %, 600 Ω rdif, 300 mW Ptot, SOT-23 | Larger SOT-23 footprint; looser tolerance but higher power rating | Choose when board space allows larger package and ±5 % accuracy suffices for cost-sensitive designs |
Compared with BZX84W-B5V1F, MMBZ5222BS offers lower dynamic impedance but reduced power handling, while BZX84-C5V1 trades tolerance and package size for higher thermal margin-making BZX84W-B5V1F optimal for compact, precision 5.1 V references where thermal design is constrained.
Availability
BZX84W-B5V1F is available at Aetrix Electronics and suitable for power supply feedback reference, overvoltage clamp protection, and low-power sensor biasing requiring stable component supply with full traceability and lifecycle support.
Supply support for BZX84W-B5V1F 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, serving automotive, industrial, and consumer markets with ISO/TS-certified manufacturing.
The BZX84W series belongs to Nexperia's general-purpose Zener diode product line, engineered for stable voltage regulation in space-constrained SMT applications across industrial temperature ranges.
FAQ
What is the maximum continuous reverse current for reliable Zener operation?
The BZX84W-B5V1F supports up to 200 mA forward current, but for Zener regulation, the recommended maximum DC reverse current is 45 mA-calculated from its 275 mW power rating and 5.1 V Zener voltage (Ptot/VZ). Exceeding this risks thermal runaway due to its 455 K/W junction-to-ambient resistance.
How does the n.c. pin affect PCB layout and thermal performance?
Pin 2 is internally not connected and must remain un-soldered and un-traced on PCB. Leaving it floating avoids unintended parasitic coupling and maintains specified thermal resistance (455 K/W), as confirmed in Nexperia's SOT323 footprint guidelines-no thermal pad or solder mask opening is required.
Can BZX84W-B5V1F replace older BZX84-C5V1 in existing designs?
Yes, with qualification: both share SOT323 package and 5.1 V nominal voltage, but BZX84W-B5V1F offers ±2 % tolerance versus ±5 %, lower leakage (2 µA vs. 5 µA at 2 V), and identical 275 mW power rating. Layout compatibility is confirmed by matching land patterns per Figure 9 in the datasheet.
What is the significance of the 'F' suffix in BZX84W-B5V1F?
The 'F' denotes Nexperia's standard tape-and-reel packaging option for SOT323 devices-8 mm tape width, 3 mm pitch, 3000 units per reel-ensuring compatibility with automated pick-and-place equipment and conforming to EIA-481-D standards for surface-mount assembly.
BZX84W-B5V1F 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):
- 5.1 V
- Tolerance:
- ±2%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 2 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-B5V1F FAQ
1.How can I place an order for BZX84W-B5V1F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-B5V1F 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-B5V1F reliable?
The price and inventory of BZX84W-B5V1F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-B5V1F is usually 5 days.
3.What payment methods are accepted for BZX84W-B5V1F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-B5V1F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-B5V1F?
BZX84W-B5V1F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-B5V1F 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-B5V1F?
For technical support, including BZX84W-B5V1F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-B5V1F requirements.
6.How does Aetrix verify that BZX84W-B5V1F is sourced from the original manufacturer or authorized distributors?
All BZX84W-B5V1F 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-B5V1F meets industry standards.
7.What is the process for return or replacement of BZX84W-B5V1F?
All BZX84W-B5V1F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-B5V1F, 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-B5V1F part is unused and in its original packaging.
Return procedure for BZX84W-B5V1F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-B5V1F Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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MM5Z5V1ST1G
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