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Nexperia USA Inc. BZX84W-C15-QF
- Part No.:
- BZX84W-C15-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C15-QF.pdf
- Description:
- DIODE ZENER 14.7V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,737
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Product details
Overview
BZX84W-C15-QF from Nexperia is a ±5 % tolerance Zener diode with 15 V nominal 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 and sensor interface circuits.
For engineers reviewing the BZX84W-C15-QF datasheet, BZX84W-C15-QF pinout, BZX84W-C15-QF application, or BZX84W-C15-QF equivalent, key selection criteria include Zener voltage tolerance (±5 %), low differential resistance (200 Ω at IZ = 5 mA), AEC-Q101 qualification, thermal resistance (455 K/W), and reverse leakage (50 nA at 0.7 × VZnom).
Technical Context
This device operates as a two-terminal voltage reference in reverse-biased mode, delivering stable 15 V regulation across 1 mA to 20 mA test currents. Its temperature coefficient of +11.4 mV/K (typical at IZ = 5 mA) enables predictable drift compensation in temperature-sensitive analog circuits.
The SOT323 package supports high-density PCB layouts with minimal parasitic capacitance (2.0 pF at f = 1 MHz, VR = 0 V) and fast transient response. It is rated for junction temperatures up to 150 °C and qualified per AEC-Q101 for under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15 V nominal, ±5 % tolerance (13.8 V to 15.6 V) - defines precise clamping threshold for overvoltage protection. |
| Differential Resistance (rdiff) | 200 Ω max at IZ = 5 mA - ensures low regulation error under varying load current. |
| Reverse Leakage Current (IR) | 50 nA max at VR = 10.5 V (0.7 × VZnom) - minimizes standby power loss in battery-powered systems. |
| Total Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 PCB - sets continuous DC power handling limit in standard layout. |
| Thermal Resistance (Rth(j-a)) | 455 K/W - determines junction-to-ambient temperature rise per watt; critical for thermal derating above 25 °C. |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - defines conduction drop when used in series polarity protection or ESD clamp configurations. |
| Capacitance (Cd) | 2.0 pF at f = 1 MHz, VR = 0 V - enables use in high-frequency filtering without signal distortion. |
Pinout & Package
SOT323 (SC-70) leadless surface-mount plastic package: 1.35 mm × 1.75 mm footprint, 0.65 mm pitch, 0.9 mm height, tin-plated terminations compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential node in reverse-bias configuration; carries forward current during fault conditions. |
| 2 | Not Connected (n.c.) | Internally isolated terminal - must remain unconnected on PCB to avoid parasitic coupling or mechanical stress. |
| 3 | Cathode (K) | Connects to higher-potential node; defines Zener breakdown direction and serves as reference output node. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control units and ADAS sensors. |
| ±5 % Zener voltage tolerance | Enables tighter system-level voltage margining than ±10 % parts, reducing need for post-regulation trimming in 12 V/24 V rail monitoring. |
| Low 2.0 pF junction capacitance | Preserves signal integrity in RF-coupled bias networks and high-speed data line protection without adding phase shift. |
| 200 mA absolute maximum forward current | Supports robust surge handling during transient events like load dump or ISO 7637-2 pulse 5a, without bond wire fusing. |
| 150 °C maximum junction temperature | Allows operation in under-hood environments up to +125 °C ambient with appropriate PCB copper area and derating. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Reference |
|---|---|
|
Use Scenario: Clamping 12 V battery supply against load-dump transients in body control modules. IC Role / Device Role / Timing Role: Two-terminal shunt regulator providing passive overvoltage limiting at the input stage of LDOs and microcontrollers. Use Value: Limits peak voltage to ≤15.6 V (±5 %) during 100 ms transients, preventing damage to downstream 16 V-rated ICs. |
Use Scenario: Providing stable 15 V reference for 4–20 mA current loop transmitter front-end op-amps. IC Role / Device Role / Timing Role: Precision voltage reference source with low tempco (+11.4 mV/K) and minimal self-heating error. Use Value: Maintains reference stability within ±0.15 % over −40 °C to +85 °C ambient, enabling <0.2 % full-scale error in analog output. |
| USB-C Port ESD Clamp | High-Frequency Signal Line Bias |
|
Use Scenario: Secondary ESD protection on VBUS line of automotive USB-C charging ports. IC Role / Device Role / Timing Role: Fast-response Zener clamp placed after primary TVS, absorbing residual energy below 15 V threshold. Use Value: 2.0 pF capacitance avoids signal degradation on 480 Mbps USB 2.0 lines while clamping sub-100 ns ESD pulses. |
Use Scenario: DC biasing of RF amplifier input matching networks in telematics antennas. IC Role / Device Role / Timing Role: Low-capacitance Zener establishing fixed DC potential without loading GHz-range AC signals. Use Value: Enables stable bias point for GaN FETs operating at 1.8–2.4 GHz, with <0.05 dB insertion loss impact. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-C15-Q | Same electrical specs and AEC-Q101 qualification; differs only in marking code (R8% vs QF) and internal traceability batch coding. | No functional difference; identical in automotive and industrial use cases requiring 15 V ±5 % regulation. | Select when standard Nexperia marking compliance is required without custom labeling. |
| MMSZ5245B-TP | ±5 % tolerance, 15 V nominal, but SOD-123 package (larger footprint, 600 mW Ptot), no AEC-Q101 qualification. | Suitable for non-automotive industrial power supplies where board space is less constrained and qualification not mandated. | Choose for cost-sensitive consumer or white-goods designs where automotive reliability is unnecessary. |
Compared with BZX84W-C15-QF, the BZX84W-C15-Q offers identical performance with standard marking, while MMSZ5245B-TP trades AEC-Q101 compliance and compact size for higher power rating and broader commercial availability - guiding selection based on qualification needs and PCB real estate.
Availability
BZX84W-C15-QF is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and high-frequency signal conditioning requiring stable component supply, consistent AEC-Q101 compliance, and tight Zener voltage tolerance.
Supply support for BZX84W-C15-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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and mobile markets.
BZX84W-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for robust voltage regulation and transient suppression in harsh automotive environments.
FAQ
What is the maximum reverse voltage this Zener can safely clamp?
The BZX84W-C15-QF is rated for 15 V nominal Zener voltage with ±5 % tolerance, meaning its guaranteed clamping range is 13.8 V to 15.6 V at IZ = 5 mA. It must not be subjected to sustained reverse voltages exceeding 15.6 V in normal operation, though it withstands non-repetitive surges up to 40 W for 100 µs per IEC 60134 limiting values.
Is pin 2 electrically functional or a mechanical dummy lead?
Pin 2 is explicitly designated "n.c." (not connected) in Nexperia's official pinning information and must remain unconnected on the PCB. It serves only as a mechanical anchor for the SOT323 package and has no internal semiconductor connection - soldering or routing to it may cause mechanical stress or unintended coupling.
How does its temperature coefficient affect regulation accuracy over automotive temperature range?
With a typical temperature coefficient of +11.4 mV/K at IZ = 5 mA, the BZX84W-C15-QF exhibits ~1.14 V drift from −40 °C to +125 °C ambient. However, its low differential resistance (200 Ω) and stable thermal design minimize self-heating effects, keeping total regulation error within ±1.5 % across the full AEC-Q101 temperature range when properly mounted.
Can this part replace older BZX84-C15 variants in existing designs?
Yes - BZX84W-C15-QF maintains pin-to-pin compatibility and identical electrical specifications with legacy BZX84-C15 parts, while adding AEC-Q101 qualification and improved thermal performance via the optimized SOT323 package. No layout or schematic changes are needed, but validation per ISO/TS 16949 change control is recommended for automotive production releases.
BZX84W-C15-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):
- 14.7 V
- Tolerance:
- ±6.12%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 10.29 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-C15-QF FAQ
1.How can I place an order for BZX84W-C15-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C15-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-C15-QF reliable?
The price and inventory of BZX84W-C15-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-C15-QF is usually 5 days.
3.What payment methods are accepted for BZX84W-C15-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C15-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C15-QF?
BZX84W-C15-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C15-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-C15-QF?
For technical support, including BZX84W-C15-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C15-QF requirements.
6.How does Aetrix verify that BZX84W-C15-QF is sourced from the original manufacturer or authorized distributors?
All BZX84W-C15-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-C15-QF meets industry standards.
7.What is the process for return or replacement of BZX84W-C15-QF?
All BZX84W-C15-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C15-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-C15-QF part is unused and in its original packaging.
Return procedure for BZX84W-C15-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C15-QF Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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