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Nexperia USA Inc. BZX84W-C13-QX
- Part No.:
- BZX84W-C13-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C13-QX.pdf
- Description:
- DIODE ZENER 13.25V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:5,421
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Product details
Overview
BZX84W-C13-QX from Nexperia is a ±5% tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 13 V nominal Zener voltage at 5 mA, 100 nA reverse leakage at 8 V, and 275 mW total power dissipation on FR4 PCB. It serves as a precision reference or overvoltage clamp in automotive power supply rails and sensor interface circuits.
For engineers reviewing the BZX84W-C13-QX datasheet, BZX84W-C13-QX pinout, BZX84W-C13-QX application, or BZX84W-C13-QX equivalent, this page delivers verified Zener voltage, thermal resistance, differential resistance, reverse leakage, and AEC-Q101 qualification status - all critical for automotive-grade voltage regulation design validation.
Technical Context
This device operates in reverse-bias breakdown mode with a nominal Zener voltage of 13 V at IZ = 5 mA, exhibiting 9.4 mV/K temperature coefficient and 80 Ω typical differential resistance. Its 100 nA reverse current at VR = 8 V enables low-power biasing in signal conditioning paths.
Designed for surface-mount reflow assembly, it features a 3-terminal SOT323 package with anode (Pin 1), not-connected (Pin 2), and cathode (Pin 3), supporting high-frequency regulation up to 1 MHz due to 2.5 pF junction capacitance at 0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.4 V to 14.1 V at IZ = 5 mA - defines stable regulation window for 13 V nominal rail |
| Reverse Leakage (IR) | 100 nA at VR = 8 V - ensures minimal quiescent current in standby mode |
| Differential Resistance (rdiff) | 80 Ω max at IZ = 5 mA - determines output impedance and load regulation error |
| Power Dissipation (Ptot) | 275 mW on FR4 PCB - sets maximum continuous Zener current to ~21 mA at 13 V |
| Junction-to-Ambient Rth(j-a) | 455 K/W - limits thermal rise to ~125 °C at full power in free air |
| Junction Temperature (Tj) | 150 °C max - supports operation in under-hood automotive environments |
| Capacitance (Cd) | 2.5 pF at f = 1 MHz, VR = 0 V - preserves signal integrity in high-frequency feedback loops |
Pinout & Package
SOT323 (SC-70) leadless surface-mount plastic package with 3 terminals, 1.3 mm × 1.8 mm footprint, and 0.65 mm pitch; optimized for automated placement and reflow soldering per IPC-7351B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-bias terminal; connects to lower-potential node in regulation path |
| 2 | Not Connected (n.c.) | Internal die pad with no electrical connection; must remain unconnected in layout |
| 3 | Cathode (K) | Reverse-bias terminal; connects to regulated output or reference node |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| ±5% Zener tolerance (C-series) | Enables cost-optimized designs where tighter regulation is not required |
| Low 2.5 pF junction capacitance | Minimizes phase shift in high-speed feedback networks and EMI filtering |
| 150 °C max junction temperature | Supports reliable operation in under-dash and powertrain modules without derating |
| FR4-compatible thermal performance | Delivers 275 mW dissipation without heatsink on standard single-sided copper PCB |
Applications
| Automotive Power Rail Clamping | Industrial Sensor Reference |
|---|---|
|
Use Scenario: Clamp transient spikes on 12 V battery-supplied microcontroller I/O lines in vehicle infotainment systems. IC Role / Device Role / Timing Role: Zener diode acting as shunt overvoltage protector between I/O pin and ground. Use Value: 100 nA leakage at 8 V prevents loading of high-impedance sensor inputs while clamping >15 V transients. |
Use Scenario: Provide stable 13 V reference for analog front-end amplifiers in industrial pressure transducers. IC Role / Device Role / Timing Role: Precision voltage reference source for ADC biasing and gain calibration. Use Value: 80 Ω differential resistance ensures <0.1% output variation across 1–10 mA load current range. |
| Automotive CAN Transceiver Biasing | High-Frequency Signal Conditioning |
|
Use Scenario: Bias termination resistors in CAN FD physical layer interfaces exposed to load dump events. IC Role / Device Role / Timing Role: Standby-mode voltage limiter protecting transceiver VCC pins during ISO 7637-2 pulse 5a. Use Value: 150 °C junction rating allows uninterrupted operation during sustained 125 °C ambient conditions. |
Use Scenario: DC bias point stabilization in RF amplifier input matching networks operating at 100 MHz. IC Role / Device Role / Timing Role: Low-capacitance Zener providing stable DC offset without degrading S-parameters. Use Value: 2.5 pF junction capacitance avoids resonance shifts above 500 MHz in 50 Ω systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-C13-Q | Same electrical specs, identical SOT323 package, but lacks X suffix indicating enhanced traceability and extended test screening | Approved for general industrial use; not designated for high-reliability automotive production lots | Select when full AEC-Q101 lot traceability and extended life-test data are not required |
| MMSZ5243BT1G | 13 V ±5%, 500 mW Ptot, SOD-123 package, 300 Ω rdiff, 100 nA IR - higher power but larger footprint and poorer regulation | Used in consumer power adapters; lacks AEC-Q101 qualification and automotive temperature range | Choose only for non-automotive, space-tolerant designs requiring higher surge capability |
Compared with BZX84W-C13-QX, the Q variant trades traceability for cost in non-critical roles, while MMSZ5243BT1G sacrifices regulation accuracy and qualification for higher power - making the QX optimal for automotive ECUs needing guaranteed reliability and tight parametric control.
Availability
BZX84W-C13-QX is available at Aetrix Electronics and suitable for automotive power management, industrial sensor signal chains, and high-frequency analog biasing requiring stable component supply across multi-year production cycles.
Supply support for BZX84W-C13-QX 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.
The BZX84W-Q series belongs to Nexperia's automotive-qualified Zener diode product line, engineered specifically for robust voltage regulation in harsh-environment electronic control units and sensor interfaces.
FAQ
What is the maximum continuous Zener current for BZX84W-C13-QX at 25 °C ambient?
At Tamb = 25 °C on a standard FR4 PCB, the 275 mW total power dissipation limit yields a maximum continuous Zener current of approximately 21.2 mA (275 mW ÷ 13 V). Derating is required above 25 °C per the 455 K/W thermal resistance.
Does Pin 2 (n.c.) require PCB routing or grounding?
No - Pin 2 is internally not connected and must remain electrically floating. PCB land pattern should omit solder mask opening and copper trace; routing or grounding this pin risks mechanical stress or unintended coupling in high-density layouts.
How does the ±5% tolerance affect regulation accuracy in a 13 V reference circuit?
With ±5% tolerance, the actual Zener voltage ranges from 12.4 V to 14.1 V at 5 mA. For precision references, this requires post-calibration or trimming; for clamping, it defines the overvoltage protection threshold window rather than absolute accuracy.
Is BZX84W-C13-QX suitable for ISO 7637-2 pulse 5a load dump protection?
No - its 40 W non-repetitive peak power rating applies only to 100 µs pulses. Load dump pulses exceed 100 ms duration and require TVS diodes like P6SMB15CA; BZX84W-C13-QX is intended for steady-state regulation and low-energy transients.
BZX84W-C13-QX 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):
- 13.25 V
- Tolerance:
- ±6.42%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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-C13-QX FAQ
1.How can I place an order for BZX84W-C13-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C13-QX 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-C13-QX reliable?
The price and inventory of BZX84W-C13-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-C13-QX is usually 5 days.
3.What payment methods are accepted for BZX84W-C13-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C13-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C13-QX?
BZX84W-C13-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C13-QX 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-C13-QX?
For technical support, including BZX84W-C13-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C13-QX requirements.
6.How does Aetrix verify that BZX84W-C13-QX is sourced from the original manufacturer or authorized distributors?
All BZX84W-C13-QX 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-C13-QX meets industry standards.
7.What is the process for return or replacement of BZX84W-C13-QX?
All BZX84W-C13-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C13-QX, 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-C13-QX part is unused and in its original packaging.
Return procedure for BZX84W-C13-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C13-QX 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
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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
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BZT52C3V6LP-7
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SMAZ12-13-F
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