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Nexperia USA Inc. BZX84W-C22-QX
- Part No.:
- BZX84W-C22-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C22-QX.pdf
- Description:
- DIODE ZENER 22.05V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:6,516
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Product details
Overview
BZX84W-C22-QX from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 22 V nominal Zener voltage at 5 mA, 275 mW total power dissipation, and qualified to AEC-Q101 for automotive use. It provides stable voltage reference in low-power regulation and high-frequency signal conditioning circuits.
For engineers reviewing the BZX84W-C22-QX datasheet, BZX84W-C22-QX pinout, BZX84W-C22-QX application, or BZX84W-C22-QX equivalent, this page delivers verified Zener parameters, automotive-grade thermal limits, SOT323 terminal mapping, and validated alternatives for precision voltage clamping and reference design.
Technical Context
This Zener diode operates in reverse breakdown with a typical differential resistance of 55 Ω at IZ = 5 mA and exhibits a positive temperature coefficient of +18.4 mV/K at the same current. Its non-repetitive peak reverse power dissipation reaches 40 W for 100 µs pulses, enabling transient overvoltage suppression.
The device features low junction-to-ambient thermal resistance (455 K/W on FR4 PCB), supports ambient temperatures from −55 °C to +150 °C, and maintains reverse leakage ≤100 nA at VR = 0.7 × VZnom, ensuring stability in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20.8 V to 23.3 V at IZ = 5 mA - defines precise clamping threshold for 22 V nominal regulation |
| Tolerance | ±5 % - specifies maximum deviation from nominal 22 V under standard test conditions |
| Differential Resistance (rdif) | 55 Ω max at IZ = 5 mA - determines output impedance and regulation sensitivity to current variation |
| Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C - sets continuous DC power limit on standard FR4 PCB |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - defines conduction drop when used in forward-biased protection paths |
| Junction Temperature (Tj) | 150 °C max - establishes absolute thermal ceiling for reliable long-term operation |
| Reverse Leakage (IR) | 100 nA max at VR = 15.4 V - ensures minimal standby current in high-impedance bias networks |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package with three terminals: anode (Pin 1), not connected (Pin 2), cathode (Pin 3). The n.c. terminal is electrically isolated and must not be soldered or biased.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connects to lower-potential side in reverse-bias Zener operation; forward current enters here |
| 2 | Not Connected | Internally unconnected; no electrical function - must remain floating and unsoldered |
| 3 | Cathode | Connects to higher-potential side in reverse-bias mode; Zener breakdown occurs across this terminal and Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics |
| Low capacitance (1.25 pF) | Enables use in >100 MHz signal path clamping without bandwidth degradation |
| Wide voltage range (2.4–75 V) | Supports single-family selection across diverse system rail voltages |
| High surge capability (40 W, 100 µs) | Withstands ESD and load-dump transients in automotive subsystems |
| Thermal robustness (−55 °C to +150 °C) | Operates reliably under hood and under-chassis environmental extremes |
Applications
| Automotive Power Rail Clamping | Industrial Sensor Reference |
|---|---|
Use Scenario: Protecting LIN bus transceivers from load-dump spikes in 12 V vehicle networks. IC Role / Device Role / Timing Role: Zener clamp placed between VCC and ground to shunt excess energy during ISO 7637-2 pulse 5a events. Use Value: Limits rail voltage to ≤23.3 V with <100 nA leakage, preserving transceiver integrity without loading the supply. | Use Scenario: Providing stable 22 V reference for analog front-end amplifiers in pressure sensor modules. IC Role / Device Role / Timing Role: Precision shunt reference sourcing bias current to op-amp input stages. Use Value: Delivers ±5 % accuracy and <55 Ω dynamic impedance, minimizing reference drift across −40 °C to +125 °C. |
| Consumer USB Port Protection | Medical Instrument Overvoltage Guard |
Use Scenario: Safeguarding USB-C PD controller ICs against accidental 24 V adapter misconnection. IC Role / Device Role / Timing Role: Reverse-biased Zener placed between VBUS and GND to clamp fault voltage before controller damage. Use Value: Activates at 20.8 V with 40 W surge rating, absorbing 100 µs transients without degradation. | Use Scenario: Isolating patient-connected ECG amplifier inputs from defibrillator-induced surges. IC Role / Device Role / Timing Role: High-reliability Zener in series with input RC filter to limit common-mode voltage excursion. Use Value: Maintains <100 nA leakage at 15.4 V and survives 150 °C sterilization cycles per AEC-Q101 stress profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-C22-Q | Same electrical specs, identical SOT323 package, but lacks X suffix denoting enhanced traceability/lot control | Approved for general industrial use; not explicitly marked for extended automotive traceability requirements | Select when full AEC-Q101 lot documentation is not mandated by OEM tier-1 specifications |
| MMSZ5247ET1G | 22 V ±5 %, 500 mW Ptot, SOD-123 package, higher power but larger footprint and 300 Ω rdif | Preferred where board space allows larger package and higher continuous power is needed | Choose for non-automotive designs requiring >275 mW dissipation or legacy SOD-123 layout compatibility |
Compared with BZX84W-C22-QX, the BZX84W-C22-Q offers identical regulation performance without extended traceability, while MMSZ5247ET1G trades smaller size and AEC-Q101 compliance for higher power and looser dynamic impedance - making the QX variant optimal for space-constrained, safety-critical automotive voltage references.
Availability
BZX84W-C22-QX is available at Aetrix Electronics and suitable for automotive power rail clamping, industrial sensor reference circuits, and medical instrument overvoltage guard applications requiring stable component supply and full AEC-Q101 compliance.
Supply support for BZX84W-C22-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 high-volume, high-reliability discrete and logic devices, headquartered in Nijmegen, Netherlands.
The BZX84W-Q series belongs to Nexperia's automotive-qualified Zener diode product line, engineered specifically for stable voltage reference and transient suppression in demanding vehicular and industrial environments.
FAQ
What is the maximum reverse current at 15.4 V for BZX84W-C22-QX?
The maximum reverse leakage current (IR) is 100 nA when reverse voltage is applied at 0.7 × VZnom = 15.4 V, measured at Tj = 25 °C. This value is guaranteed per Table 7 and reflects tight process control for low-power bias networks.
Can BZX84W-C22-QX replace BZX84W-C22-Q in automotive designs?
Yes - BZX84W-C22-QX is a direct functional and pin-compatible replacement for BZX84W-C22-Q, with identical electrical characteristics and AEC-Q101 qualification. The "X" suffix denotes enhanced manufacturing traceability required by certain Tier-1 automotive customers.
What is the thermal resistance from junction to ambient under standard mounting?
Rth(j-a) is 455 K/W when mounted on a FR4 PCB with single-sided copper, tin-plated, and using the standard SOT323 footprint per Figure 9. This value assumes natural convection and defines the worst-case temperature rise per watt of dissipated power.
Does BZX84W-C22-QX support wave soldering?
Yes - Nexperia provides a dedicated wave soldering footprint (Figure 10) with 3.65 mm × 2.1 mm pad layout and specified solder resist openings. The SOT323 package is qualified for both reflow and wave processes per JEDEC J-STD-020 and J-STD-002 standards.
BZX84W-C22-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):
- 22.05 V
- Tolerance:
- ±5.67%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15.435 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-C22-QX FAQ
1.How can I place an order for BZX84W-C22-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C22-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-C22-QX reliable?
The price and inventory of BZX84W-C22-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-C22-QX is usually 5 days.
3.What payment methods are accepted for BZX84W-C22-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C22-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C22-QX?
BZX84W-C22-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C22-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-C22-QX?
For technical support, including BZX84W-C22-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C22-QX requirements.
6.How does Aetrix verify that BZX84W-C22-QX is sourced from the original manufacturer or authorized distributors?
All BZX84W-C22-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-C22-QX meets industry standards.
7.What is the process for return or replacement of BZX84W-C22-QX?
All BZX84W-C22-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C22-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-C22-QX part is unused and in its original packaging.
Return procedure for BZX84W-C22-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C22-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
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
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SMAZ12-13-F
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