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Nexperia USA Inc. BZX84W-C16X
- Part No.:
- BZX84W-C16X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C16X.pdf
- Description:
- DIODE ZENER 16V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,770
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Product details
Overview
BZX84W-C16X from Nexperia is a ±5 % tolerance Zener diode with 16 V nominal regulation voltage, 200 mA maximum forward current, 275 mW total power dissipation, and 200 Ω typical differential resistance at IZ = 5 mA, used for precision voltage reference and overvoltage protection in low-power analog signal conditioning circuits.
For engineers reviewing the BZX84W-C16X datasheet, BZX84W-C16X pinout, BZX84W-C16X application, or BZX84W-C16X equivalent, this page delivers verified Zener voltage, thermal resistance, reverse leakage, capacitance, and SOT323 package layout to support ESD-tolerant biasing, rail clamping, and reference design validation.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable 16 V output across load variations, with temperature coefficient of +12.4 mV/K at IZ = 5 mA and junction-to-ambient thermal resistance of 455 K/W on FR4 PCB. Its 1.5 pF capacitance at 1 MHz and 0 V bias enables use in high-frequency feedback paths without phase degradation.
Designed for surface-mount reliability in space-constrained designs, it features a three-terminal SOT323 package with anode (Pin 1), not-connected (Pin 2), and cathode (Pin 3), supporting automated reflow assembly per JEDEC J-STD-020 standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 15.3 V to 17.1 V (±5 % tolerance at IZ = 5 mA); ensures stable reference within 0.7 V window under nominal bias |
| Differential Resistance rdif | 200 Ω max at IZ = 5 mA; limits regulation error to ≤100 mV for ±20 mA load current swing |
| Reverse Leakage IR | 50 nA max at VR = 11.2 V (0.7 × VZnom); guarantees minimal quiescent current in standby bias networks |
| Diode Capacitance Cd | 1.5 pF at f = 1 MHz, VR = 0 V; preserves signal integrity up to ~100 MHz in RF detector or fast clamp applications |
| Forward Voltage VF | 0.9 V max at IF = 10 mA; enables low-loss forward conduction for dual-direction transient suppression |
| Total Power Dissipation Ptot | 275 mW at Tamb = 25 °C on standard FR4; supports continuous operation up to 70 °C ambient with derating |
| Junction Temperature Tj | 150 °C max; allows reliable operation in industrial environments with localized heating near switching nodes |
Pinout & Package
SOT323 (SC-70) leadless plastic surface-mount package with 1.3 mm × 1.8 mm footprint, 0.65 mm pitch, and 0.25 mm nominal thickness; optimized for high-density PCB layouts and reflow-compatible soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential node in reverse-bias configuration; carries forward current during surge events |
| 2 | Not Connected (n.c.) | Internally unconnected terminal; must remain floating-no PCB trace or solder mask relief required |
| 3 | Cathode (K) | Connects to regulated output or higher-potential rail; defines Zener breakdown polarity and voltage reference point |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables predictable 16 V regulation without post-production trimming in cost-sensitive consumer power rails |
| 1.5 pF junction capacitance | Minimizes loading on high-speed comparator inputs or crystal oscillator feedback paths |
| 455 K/W thermal resistance | Permits direct integration into thermally isolated analog sections without heatsinking |
| Non-repetitive peak reverse power: 40 W | Withstands 100 µs ESD transients per IEC 61000-4-2 Level 4 without degradation |
| Operating ambient range: −55 °C to +150 °C | Supports deployment in under-hood automotive modules and industrial motor control enclosures |
Applications
| Reference Voltage Source | Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 16 V reference for ADC biasing and op-amp level-shifting in battery-powered sensor nodes. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to generate fixed DC reference independent of supply ripple. Use Value: 200 Ω dynamic impedance ensures <10 mV shift for ±5 mA reference current variation, maintaining 12-bit ADC accuracy. |
Use Scenario: Clamping 24 V supply rail against transient spikes in PLC I/O modules. IC Role / Device Role / Timing Role: Shunt protector diverting surge current above 16 V threshold to ground before downstream IC damage. Use Value: 40 W non-repetitive peak power rating absorbs 1 kV/500 A EFT bursts without parametric shift or failure. |
| Signal-Level Limiter | Low-Power Bias Generator |
|
Use Scenario: Limiting audio signal amplitude in microphone preamplifier input stages to prevent op-amp saturation. IC Role / Device Role / Timing Role: Bidirectional limiter using forward conduction (0.9 V) and reverse breakdown (16 V) to constrain signal swing. Use Value: 1.5 pF capacitance avoids high-frequency roll-off beyond 100 kHz, preserving audio fidelity. |
Use Scenario: Generating precise 16 V bias for photodiode transimpedance amplifier in optical smoke detectors. IC Role / Device Role / Timing Role: Low-leakage (50 nA) Zener establishing stable bias point for ultra-low-current sensing circuits. Use Value: Sub-100 nA reverse current prevents measurable offset drift in femtoampere-range photocurrent measurement. |
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 | Same 16 V nominal, ±5 %, but SOT-23 package (larger footprint, 350 mW Ptot) and 300 Ω rdif | Higher power handling suits higher-current biasing; less suitable for ultra-dense layouts | Select when board space permits and >275 mW dissipation margin is needed |
| Vishay BZX84-C16 | Identical electrical specs and SOT323 package, but ±5 % tolerance marked as "C" (same as BZX84W-C16X) and 220 Ω rdif typ | No functional difference; qualified to AEC-Q200 for automotive use (BZX84W-C16X is non-automotive) | Select for automotive-grade qualification where 150 °C operation and stress testing are mandated |
Compared with MMBZ5245BS, BZX84W-C16X offers tighter layout integration and lower dynamic impedance; versus BZX84-C16, it trades automotive qualification for lower cost and identical performance in industrial and consumer systems.
Availability
BZX84W-C16X is available at Aetrix Electronics and suitable for voltage reference generation, overvoltage protection, and signal limiting requiring stable component supply in industrial automation, consumer electronics, and test equipment.
Supply support for BZX84W-C16X 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 logic, discrete, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for mass-market electronics.
The BZX84W series belongs to Nexperia's general-purpose Zener diode product line, engineered for compact, high-stability voltage regulation in space-constrained SMT applications across consumer, computing, and industrial segments.
FAQ
What is the maximum reverse voltage the BZX84W-C16X can withstand before breakdown?
The BZX84W-C16X has a nominal Zener voltage of 16 V with ±5 % tolerance, meaning breakdown occurs between 15.3 V and 17.1 V at IZ = 5 mA. Its absolute maximum reverse voltage is not specified separately-the device is designed to operate continuously within this regulated range, not as a blocking diode above VZ.
Can BZX84W-C16X be used in place of a 15 V Zener diode?
No-BZX84W-C16X is specifically rated for 16 V nominal regulation (15.3–17.1 V). Substituting it for a 15 V Zener introduces a systematic 1 V offset that may violate reference accuracy requirements in precision circuits such as DAC buffers or sensor excitation supplies.
Is Pin 2 (n.c.) required to be left unconnected on the PCB?
Yes-Pin 2 is internally not connected and must remain electrically floating. No trace, pad, or solder mask opening is required for this terminal; routing or grounding it risks mechanical stress or unintended parasitic coupling in high-frequency layouts.
How does thermal resistance affect BZX84W-C16X performance in enclosed assemblies?
With Rth(j-a) = 455 K/W, a 275 mW dissipation raises junction temperature by ~125 K above ambient. In a sealed enclosure at 70 °C ambient, Tj reaches ~195 °C-exceeding the 150 °C limit. Derating to ≤120 mW or adding copper pour is mandatory for sustained operation.
BZX84W-C16X 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:
- ±5%
- 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-C16X FAQ
1.How can I place an order for BZX84W-C16X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C16X 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-C16X reliable?
The price and inventory of BZX84W-C16X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-C16X is usually 5 days.
3.What payment methods are accepted for BZX84W-C16X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C16X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C16X?
BZX84W-C16X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C16X 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-C16X?
For technical support, including BZX84W-C16X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C16X requirements.
6.How does Aetrix verify that BZX84W-C16X is sourced from the original manufacturer or authorized distributors?
All BZX84W-C16X 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-C16X meets industry standards.
7.What is the process for return or replacement of BZX84W-C16X?
All BZX84W-C16X units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C16X, 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-C16X part is unused and in its original packaging.
Return procedure for BZX84W-C16X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C16X Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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