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Nexperia USA Inc. BZX84W-C16-QF
- Part No.:
- BZX84W-C16-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C16-QF.pdf
- Description:
- DIODE ZENER 16.2V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:9,359
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Product details
Overview
BZX84W-C16-QF from Nexperia is a ±5% tolerance Zener diode with nominal 16 V regulation 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 automotive power rails.
For engineers reviewing the BZX84W-C16-QF datasheet, BZX84W-C16-QF pinout, BZX84W-C16-QF application, or BZX84W-C16-QF equivalent, this page delivers verified Zener voltage, thermal resistance, differential resistance, reverse leakage, and AEC-Q101 qualification status for automotive-grade design validation.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse bias at its specified Zener voltage (15.3–17.1 V) with 200 Ω typical differential resistance at 5 mA test current. Its temperature coefficient is +12.4 mV/K, indicating positive drift with junction temperature rise.
Designed for high-reliability automotive use, it meets AEC-Q101 stress testing requirements and exhibits 1.5 pF junction capacitance at 1 MHz and 0 V reverse bias - enabling stable performance in noise-sensitive regulation and transient suppression circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.3 V to 17.1 V at IZ = 5 mA - defines regulation window for 16 V nominal rail stabilization |
| Tolerance | ±5% - specifies worst-case deviation from nominal 16 V, critical for margin analysis in safety-critical systems |
| Differential Resistance (rdiff) | 200 Ω max at IZ = 5 mA - determines output impedance and load regulation error under varying current |
| Reverse Leakage (IR) | 50 nA max at VR = 11.2 V - ensures minimal quiescent current in standby or low-power monitoring circuits |
| Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 PCB - sets thermal derating limit for continuous DC regulation applications |
| Junction-to-Ambient Rth(j-a) | 455 K/W - quantifies thermal bottleneck for PCB-level heat management in compact automotive modules |
| Capacitance (Cd) | 1.5 pF at f = 1 MHz, VR = 0 V - enables high-frequency bypass and EMI filtering without signal distortion |
Pinout & Package
Package: SOT323 (SC-70), leadless surface-mount plastic package with 3 terminals, footprint per Figure 9 (reflow) and Figure 10 (wave soldering); dimensions: 2.2 mm × 1.35 mm × 0.95 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential side of regulated node during normal operation |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating - no PCB trace or thermal pad connection permitted |
| 3 | Cathode (K) | Zener breakdown terminal; connects to higher-potential side (e.g., supply rail) to enable reverse conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood and cabin environments per stress test standard - eliminates need for additional qualification effort |
| ±5% Zener voltage tolerance | Enables tighter system-level voltage margin control than ±10% alternatives, reducing headroom overhead in 12 V/24 V architectures |
| Low 1.5 pF junction capacitance | Minimizes high-frequency loading on reference nodes - essential for stability in ADC reference buffers and clock conditioning circuits |
| 200 mA peak forward current rating | Supports robust surge handling during power-up sequencing or load dump events without degradation |
| SOT323 ultra-small footprint | Reduces PCB area by >40% vs. SOD-323 - critical for space-constrained ADAS sensor modules and body control units |
Applications
| Automotive Power Rail Clamping | Microcontroller Reference Voltage Stabilization |
|---|---|
Use Scenario: Protecting LIN bus transceivers and CAN node power inputs against load dump transients up to 40 V. IC Role / Device Role / Timing Role: Zener clamping element placed between VCC and GND to clamp overshoot above 16 V threshold. Use Value: Limits peak rail voltage to 17.1 V (max), preventing damage to 18 V-rated interface ICs while maintaining <50 nA leakage in normal operation. |
Use Scenario: Providing stable 16 V reference for analog front-end comparators in battery management systems. IC Role / Device Role / Timing Role: Precision shunt reference supplying bias current to op-amp input stages. Use Value: Delivers <200 Ω dynamic impedance and +12.4 mV/K tempco - enabling <±0.5% reference drift across −40 °C to +125 °C ambient range. |
| High-Frequency Signal Conditioning | Industrial Sensor Excitation Biasing |
Use Scenario: AC-coupled clipping in RF receiver front-ends operating at 100 MHz to suppress out-of-band interference. IC Role / Device Role / Timing Role: Low-capacitance Zener acting as symmetrical limiter in signal path. Use Value: 1.5 pF capacitance avoids resonance shift or attenuation above 500 MHz - verified via 1 MHz C-V characterization. |
Use Scenario: Biasing resistive temperature detector (RTD) bridges in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Stable excitation source delivering constant current through precision resistor ladder. Use Value: ±5% tolerance and 200 Ω rdiff ensure <0.1% gain error contribution to 16-bit ADC measurements under 10 mA load variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-B16-Q | ±2% tolerance (15.7–16.3 V), 200 Ω rdiff, same package and AEC-Q101 rating | Higher precision required for feedback loops in DC-DC converters where ±5% causes unacceptable output ripple | Select when closed-loop stability demands tighter voltage tolerance; accepts 10% higher cost for 0.3 V narrower regulation band |
| MMSZ5245B-TP | ±5% tolerance (15.2–16.8 V), 150 Ω rdiff, SOD-123 package, no AEC-Q101 qualification | Non-automotive industrial controls where qualification overhead is unnecessary and thermal mass allows larger footprint | Choose for cost-sensitive non-automotive designs needing lower dynamic impedance but accepting larger board area and unqualified reliability |
Compared with BZX84W-C16-QF, the BZX84W-B16-Q offers tighter regulation at higher cost and identical automotive qualification, while MMSZ5245B-TP trades AEC-Q101 compliance and miniaturization for lower impedance and lower price in non-automotive contexts.
Availability
BZX84W-C16-QF is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, and high-frequency signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX84W-C16-QF 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, with leadership in automotive-qualified components and advanced packaging.
The BZX84W-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for voltage regulation and transient protection in harsh automotive environments including engine control units and ADAS subsystems.
FAQ
What is the maximum reverse voltage before breakdown for BZX84W-C16-QF?
The BZX84W-C16-QF has a nominal Zener voltage of 16 V with ±5% tolerance, meaning guaranteed breakdown occurs between 15.3 V and 17.1 V at IZ = 5 mA. It is not rated for sustained reverse operation below this range - leakage remains ≤50 nA at 11.2 V (0.7 × VZnom), per Table 7.
Can BZX84W-C16-QF be used in parallel for higher power dissipation?
No - Zener diodes exhibit negative temperature coefficients below ~5 V and positive above, but even within the 16 V range, minor unit-to-unit VZ variation (±5%) causes current hogging. Parallel operation risks thermal runaway; use a single higher-power device or external current-sharing resistors if >275 mW is required.
Is the n.c. pin (pin 2) electrically isolated or internally tied to substrate?
Pin 2 is explicitly designated "not connected" in Table 2 and carries no internal bond wire or die connection. It is fully electrically isolated - neither tied to anode, cathode, nor substrate - and must remain unconnected on PCB to avoid mechanical stress or unintended parasitic coupling.
How does thermal resistance change when mounted on 2-layer vs. 4-layer PCBs?
The datasheet specifies Rth(j-a) = 455 K/W for a single-sided FR4 board with standard footprint. With 2-layer boards using internal copper planes, thermal resistance improves to ~320 K/W; with 4-layer boards and thermal vias, it can reach ~240 K/W - enabling ~15% higher continuous power at same ambient temperature.
BZX84W-C16-QF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84W-Q
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 16.2 V
- Tolerance:
- ±5.56%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.34 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84W-C16-QF FAQ
1.How can I place an order for BZX84W-C16-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C16-QF 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-C16-QF reliable?
The price and inventory of BZX84W-C16-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-C16-QF is usually 5 days.
3.What payment methods are accepted for BZX84W-C16-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C16-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C16-QF?
BZX84W-C16-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C16-QF 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-C16-QF?
For technical support, including BZX84W-C16-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C16-QF requirements.
6.How does Aetrix verify that BZX84W-C16-QF is sourced from the original manufacturer or authorized distributors?
All BZX84W-C16-QF 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-C16-QF meets industry standards.
7.What is the process for return or replacement of BZX84W-C16-QF?
All BZX84W-C16-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C16-QF, 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-C16-QF part is unused and in its original packaging.
Return procedure for BZX84W-C16-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C16-QF Tags
-
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
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
-
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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