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Diodes Incorporated BZX84B22-7-F
- Part No.:
- BZX84B22-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84B22-7-F.pdf
- Description:
- DIODE ZENER 22V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,890
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Product details
Overview
BZX84B22-7-F from Diodes Incorporated is a precision 22 V ±2% tolerance Zener diode in SOT23 package, rated for 350 mW power dissipation at ambient temperature, with 55 Ω dynamic impedance at 5 mA test current and 0.1 µA maximum reverse leakage at 15.4 V, used for voltage regulation and reference in low-power analog circuits.
For engineers reviewing the BZX84B22-7-F datasheet, BZX84B22-7-F pinout, BZX84B22-7-F application, or BZX84B22-7-F equivalent, this page delivers verified electrical parameters, thermal derating behavior, AEC-Q101 qualification status, SOT23 terminal mapping, and automotive-grade alternatives with documented voltage/impedance trade-offs.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across load variations, with nominal 22 V regulation at 5 mA (IZT), ±2% initial tolerance, and a positive temperature coefficient of +16.4 mV/°C above 6 V - enabling predictable drift compensation in reference designs.
Its 350 mW power rating applies under free-air conditions with terminals held at ambient; derating begins linearly above +25°C per Figure 1, reaching 0 mW at +150°C, while junction-to-ambient thermal resistance is 357 °C/W when mounted per recommended SOT23 pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22 V nominal, 21.6–22.4 V range at 5 mA - ensures tight regulation tolerance for precision references |
| Power Dissipation (PD) | 350 mW at TA = +25°C - defines maximum steady-state energy handling before thermal shutdown |
| Zener Impedance (ZZT) | 55 Ω at IZT = 5 mA - determines output voltage stability under small-signal load transients |
| Reverse Leakage (IR) | 0.1 µA max at VR = 15.4 V - guarantees minimal quiescent current in high-impedance bias networks |
| Temp. Coefficient (TC) | +16.4 mV/°C - enables predictable voltage drift correction in temperature-compensated circuits |
| Package | SOT23 - surface-mount footprint compatible with automated pick-and-place and reflow assembly |
| AEC-Q101 Qualified | Yes - validated for automotive electronics requiring high reliability and extended temperature operation |
Pinout & Package
Package: SOT23 - three-terminal plastic surface-mount case with 0.915 mm lead pitch, 2.40 mm body length, and UL 94V-0 flammability rating. Polarity marked by cathode band on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower potential node; forms cathode-referenced regulation path |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to regulated voltage rail; carries reverse current during regulation |
| Collector / NC (Pin 3) | Internal die attach / mechanical tie | Electrically isolated; serves as thermal path and mechanical anchor in SOT23 mold compound |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Reduces need for post-production trimming in voltage reference circuits |
| AEC-Q101 qualification | Validates suitability for automotive infotainment, body control, and ADAS subsystems |
| Lead-free & halogen-free "Green" construction | Meets RoHS 3 (2015/863/EU) and automotive ELV directive compliance requirements |
| Moisture Sensitivity Level 1 | Eliminates bake preconditioning prior to reflow soldering in production |
| 3000-piece tape-and-reel packaging (-7-F suffix) | Optimized for high-speed SMT line feeding without manual handling or static risk |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 22 V reference for LIN bus transceiver biasing and microcontroller reset circuitry. IC Role / Device Role / Timing Role: Precision voltage reference for analog comparators and supervisor ICs. Use Value: ±2% tolerance and AEC-Q101 qualification ensure reliable reset threshold accuracy over -40°C to +125°C. |
Use Scenario: Regulating excitation voltage for 4–20 mA current-loop pressure sensors in factory automation. IC Role / Device Role / Timing Role: Low-drift Zener shunt regulator maintaining constant sensor bridge supply. Use Value: +16.4 mV/°C TC allows predictable compensation against sensor offset drift in wide-temperature environments. |
| Medical Portable Diagnostic Device | Consumer Audio Power Supply Monitoring |
Use Scenario: Generating calibrated reference for ADC input scaling in battery-powered ECG front-end. IC Role / Device Role / Timing Role: Low-leakage (0.1 µA) voltage clamp protecting ADC inputs from overvoltage. Use Value: 350 mW rating and SOT23 size enable compact, thermally efficient design within space-constrained enclosures. |
Use Scenario: Monitoring 24 V DC wall adapter output in smart speaker power management subsystem. IC Role / Device Role / Timing Role: Overvoltage detection element triggering shutdown via comparator input. Use Value: 55 Ω Zener impedance ensures fast response to transient surges without signal distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5247BS-7-F | 20 V nominal, ±5% tolerance, 225 Ω ZZT at 20 mA - higher impedance, looser tolerance | Acceptable for non-critical biasing where 20 V suffices and tighter regulation not required | Select when cost sensitivity outweighs regulation precision and thermal stability needs |
| BZX84C22-7-F | 22 V nominal, ±5% tolerance, same SOT23 package - wider tolerance, identical thermal specs | Suitable for general-purpose clamping where ±2% is unnecessary | Choose for legacy compatibility or cost-driven designs accepting reduced voltage accuracy |
Compared with BZX84B22-7-F, MMBZ5247BS-7-F trades 2 V lower regulation and higher impedance for broader availability, while BZX84C22-7-F retains identical voltage but sacrifices 3% tolerance margin - both lack the B-series' AEC-Q101 validation and tighter TC control.
Availability
BZX84B22-7-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, and portable medical diagnostics requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX84B22-7-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.
This device belongs to the BZX84B series of precision Zener diodes engineered for high-reliability voltage reference and regulation in automotive and industrial systems demanding tight tolerance and AEC-Q101 compliance.
FAQ
What is the maximum reverse voltage before breakdown for BZX84B22-7-F?
The nominal Zener voltage is 22 V with a guaranteed range of 21.6–22.4 V at 5 mA test current. Breakdown occurs sharply within this band; applying >22.4 V under regulated current will sustain conduction, but exceeding absolute maximum ratings risks irreversible damage.
Can BZX84B22-7-F be used in place of a 24 V Zener diode?
No - its specified regulation range is 21.6–22.4 V, and it does not meet 24 V specification. For 24 V regulation, use BZX84B24-7-F (23.5–24.5 V range); substituting this part would cause undervoltage operation and potential system malfunction.
Is the SOT23 package lead-free and RoHS compliant?
Yes - BZX84B22-7-F uses matte tin-plated terminals over Alloy 42 leadframe, contains no intentionally added lead, and complies fully with EU RoHS 2015/863/EU, including halogen- and antimony-free "Green" construction per Diodes Incorporated specifications.
How does temperature affect the Zener voltage of this device?
It exhibits a +16.4 mV/°C temperature coefficient above 6 V, meaning voltage increases linearly with junction temperature - e.g., +10°C rise yields +164 mV increase. This behavior is stable and repeatable, enabling predictable compensation in reference designs.
BZX84B22-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 15.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BZX84B22-7-F FAQ
1.How can I place an order for BZX84B22-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84B22-7-F 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 BZX84B22-7-F reliable?
The price and inventory of BZX84B22-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84B22-7-F is usually 5 days.
3.What payment methods are accepted for BZX84B22-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84B22-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84B22-7-F?
BZX84B22-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84B22-7-F 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 BZX84B22-7-F?
For technical support, including BZX84B22-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84B22-7-F requirements.
6.How does Aetrix verify that BZX84B22-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84B22-7-F 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 BZX84B22-7-F meets industry standards.
7.What is the process for return or replacement of BZX84B22-7-F?
All BZX84B22-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84B22-7-F, 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 BZX84B22-7-F part is unused and in its original packaging.
Return procedure for BZX84B22-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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