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Nexperia USA Inc. BZX84W-B16F
- Part No.:
- BZX84W-B16F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-B16F.pdf
- Description:
- DIODE ZENER 16V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
BZX84W-B16F from Nexperia is a ±2 % tolerance Zener voltage regulator diode with nominal 16 V breakdown voltage, 200 mA maximum forward current, 275 mW total power dissipation, and SOT323 (SC-70) surface-mount package - used for precision voltage reference and overvoltage protection in low-power analog circuits.
For engineers reviewing the BZX84W-B16F datasheet, BZX84W-B16F pinout, BZX84W-B16F application, or BZX84W-B16F equivalent, this page delivers verified Zener parameters including 15.7–16.3 V working voltage range, 200 Ω typical differential resistance at 5 mA, −12.4 mV/K temperature coefficient, 1.5 pF junction capacitance, and non-repetitive 40 W surge capability.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable DC voltage across its terminals under varying load or supply conditions. Its ±2 % tolerance and low temperature coefficient (−12.4 mV/K at IZ = 5 mA) support tight regulation in temperature-sensitive applications.
The device features a 1.5 pF junction capacitance at 1 MHz and 0 V bias, enabling use in high-frequency filtering and noise suppression. Thermal resistance of 455 K/W (junction-to-ambient, FR4 PCB) defines its derating behavior above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage (VZ) | 15.7–16.3 V at IZ = 5 mA - defines precise regulation point for 16 V rail stabilization |
| Tolerance | ±2 % - ensures consistent voltage accuracy without post-production trimming |
| Differential resistance (rdif) | 200 Ω max at IZ = 5 mA - determines output impedance and load regulation error |
| Temperature coefficient (SZ) | −12.4 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius rise |
| Junction capacitance (Cd) | 1.5 pF at f = 1 MHz, VR = 0 V - enables RF bypass and high-frequency decoupling |
| Non-repetitive peak power (PZSM) | 40 W at tp = 100 µs - supports transient overvoltage clamping in surge events |
| Total power dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 PCB - sets continuous thermal limit for PCB layout |
Pinout & Package
Package: SOT323 (SC-70), leadless surface-mount plastic package with 3 terminals; footprint compatible with standard reflow soldering per Figure 9 in datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward current entry point; connected to lower-potential node in Zener configuration |
| 2 | Not connected (n.c.) | Electrically isolated terminal; no internal bond wire or die connection |
| 3 | Cathode (K) | Reverse-bias terminal; connected to higher-potential node for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Wide voltage range coverage | 2.4 V to 75 V in E24 series - supports single-family selection across diverse supply rails |
| Precision tolerance option | ±2 % (B-series) - reduces need for binning or external calibration in feedback paths |
| Low junction capacitance | 1.5 pF - minimizes signal coupling in RF-sensitive voltage reference nodes |
| High surge robustness | 40 W non-repetitive peak power - withstands IEC 61000-4-5 level 4 surges when properly decoupled |
| Thermal performance | 455 K/W Rth(j-a) on FR4 - enables compact layout with predictable derating above 25 °C |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 16 V reference for op-amp comparators in industrial sensor signal conditioning. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference node potential. Use Value: ±2 % tolerance and −12.4 mV/K coefficient ensure <±0.5 % total drift over −40 °C to +85 °C ambient. |
Use Scenario: Protecting microcontroller GPIO pins from 24 V field wiring transients in building automation panels. IC Role / Device Role / Timing Role: Shunt clamp absorbing surge energy before it reaches sensitive input structures. Use Value: 40 W non-repetitive peak power rating handles 100 µs surges without degradation at 16 V clamping level. |
| Low-Power Voltage Monitor | RF Decoupling Node |
|
Use Scenario: Detecting brown-out on a 16 V auxiliary rail using a comparator with hysteresis. IC Role / Device Role / Timing Role: Stable Zener voltage serving as threshold reference for undervoltage detection logic. Use Value: 200 Ω differential resistance limits reference error to <10 mV under 50 µA load variation. |
Use Scenario: Filtering high-frequency noise on a 16 V LDO output feeding RF front-end circuitry. IC Role / Device Role / Timing Role: Low-capacitance shunt element suppressing >100 MHz interference. Use Value: 1.5 pF junction capacitance avoids resonance with PCB trace inductance up to 1 GHz. |
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 MMBZ5245BS | 16 V, ±5 % tolerance, 200 mW Ptot, SOT-323 package | Higher tolerance and lower power rating reduce accuracy and surge margin | Select when cost sensitivity outweighs regulation precision and transient robustness |
| Vishay BZX84-C16 | 16 V, ±5 % tolerance, 300 mW Ptot, same SOT323 footprint | Looser tolerance but higher power allows higher continuous current in non-critical rails | Prefer for general-purpose clamping where ±5 % voltage variation is acceptable |
Compared with BZX84W-B16F, MMBZ5245BS offers lower cost but sacrifices 3× tighter tolerance and 10 % lower power handling, while BZX84-C16 trades accuracy for higher steady-state dissipation - making BZX84W-B16F optimal for precision 16 V references requiring thermal and transient stability.
Availability
BZX84W-B16F is available at Aetrix Electronics and suitable for industrial sensor interfaces, embedded power supervision, and low-noise analog reference circuits requiring stable component supply and full traceability.
Supply support for BZX84W-B16F 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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and automotive-grade quality.
The 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 consumer and industrial applications.
FAQ
What is the exact Zener voltage range for BZX84W-B16F at 5 mA test current?
The BZX84W-B16F has a guaranteed Zener voltage range of 15.7 V to 16.3 V when measured at IZ = 5 mA and Tj = 25 °C, per Table 8 in the official Nexperia datasheet Rev. 2 (January 2023). This 600 mV window reflects the ±2 % tolerance around the nominal 16 V rating.
Can BZX84W-B16F be used in place of a 16 V Zener with ±5 % tolerance?
Yes, but only if the design requires tighter voltage control: BZX84W-B16F's ±2 % tolerance provides 2.5× better accuracy than ±5 % parts like BZX84-C16. However, its 275 mW power rating is 8 % lower than BZX84-C16's 300 mW, so continuous power handling must be verified.
Is Pin 2 truly unconnected, or does it serve a mechanical function?
Pin 2 is electrically not connected (n.c.) - no internal bond wire or die connection exists. It serves only as a mechanical alignment aid during SMT placement and contributes to package rigidity, as confirmed in Table 2 "Pinning information" and Figure 8 package outline.
How does the −12.4 mV/K temperature coefficient affect long-term stability?
A −12.4 mV/K coefficient means the Zener voltage decreases by 12.4 mV per Kelvin rise in junction temperature. Over a 100 K rise (e.g., from 25 °C to 125 °C), voltage drops ~1.24 V - a 7.7 % shift from 16 V - requiring thermal design to limit Tj rise or compensation in critical references.
BZX84W-B16F 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):
- 16 V
- Tolerance:
- ±2%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.2 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-B16F FAQ
1.How can I place an order for BZX84W-B16F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-B16F 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-B16F reliable?
The price and inventory of BZX84W-B16F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-B16F is usually 5 days.
3.What payment methods are accepted for BZX84W-B16F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-B16F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-B16F?
BZX84W-B16F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-B16F 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-B16F?
For technical support, including BZX84W-B16F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-B16F requirements.
6.How does Aetrix verify that BZX84W-B16F is sourced from the original manufacturer or authorized distributors?
All BZX84W-B16F 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-B16F meets industry standards.
7.What is the process for return or replacement of BZX84W-B16F?
All BZX84W-B16F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-B16F, 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-B16F part is unused and in its original packaging.
Return procedure for BZX84W-B16F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-B16F 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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