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Taiwan Semiconductor Corporation BZX84C22 RFG
- Part No.:
- BZX84C22 RFG
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C22 RFG.pdf
- Description:
- DIODE ZENER 22V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
BZX84C22 RFG from Taiwan Semiconductor is a surface-mount Zener diode with nominal zener voltage 22 V, power dissipation 300 mW, and SOT-23 package, designed for low-voltage stabilization and precision voltage reference in space-constrained DC/DC converters and lighting control circuits.
For engineers reviewing the BZX84C22 RFG datasheet, BZX84C22 RFG pinout, BZX84C22 RFG application, or BZX84C22 RFG equivalent, key selection criteria include zener voltage tolerance (20.8–23.3 V), zener impedance (55 Ω @ 5 mA), leakage current (≤0.1 µA @ 17.6 V), temperature coefficient (+16.4 mV/°C), and RoHS/halogen-free compliance for industrial-grade reliability.
Technical Context
This device operates as a single-die, silicon planar Zener diode optimized for stable reverse-bias breakdown at 22 V with tight voltage tolerance and low dynamic impedance. It supports continuous operation up to 150 °C junction temperature and exhibits predictable thermal derating per MIL-STD-750 test conditions.
Its SOT-23 package enables automated placement and reflow soldering per J-STD-020 Level 1 moisture sensitivity, with matte tin-plated leads meeting J-STD-002 solderability and JESD201 Class 1A whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22 V nominal, 20.8–23.3 V range at IZT = 5 mA - ensures stable regulation under typical bias conditions |
| Power Dissipation (PD) | 300 mW at TA = 25 °C - defines maximum continuous power handling before thermal derating applies |
| Zener Impedance (ZZT) | 55 Ω @ 5 mA - low dynamic resistance improves regulation accuracy against load transients |
| Leakage Current (IR) | ≤0.1 µA @ 17.6 V - minimizes standby power loss in battery-backed or low-power reference circuits |
| Temperature Coefficient | +16.4 mV/°C - positive TC enables predictable drift compensation in temperature-stable references |
| Junction Temperature Range | −65 to +150 °C - supports operation in extended industrial environments without derating |
Pinout & Package
Package: SOT-23 - three-terminal, surface-mount plastic package with standard lead pitch (0.95 mm), footprint compatible with IPC-7351B SOIC-3 land pattern.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower-potential node in reverse-bias regulation configuration |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to higher-potential node; defines regulated output voltage referenced to anode |
| Collector / Heat Sink (Pin 3) | Common emitter / thermal path | Internally tied to cathode in single-diode construction; primary thermal conduction path to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free compound | Complies with IEC 61249-2-21 - eliminates corrosive halogen emissions during reflow and end-of-life disposal |
| Moisture sensitivity Level 1 | No dry-pack or baking required prior to assembly - reduces manufacturing overhead and process risk |
| Matte tin plating | Meets J-STD-002 solderability - ensures consistent wetting and joint integrity across Pb-free reflow profiles |
| Junction-to-ambient RθJA | 417 °C/W - enables thermal design margin estimation for PCB copper area and airflow constraints |
Applications
| LED Driver Reference | USB-C Power Adapter Feedback |
|---|---|
Use Scenario: Provides precise 22 V reference for current-sense amplifier feedback in constant-current LED drivers. IC Role / Device Role / Timing Role: Zener voltage reference establishing regulation threshold for op-amp comparator loop. Use Value: Tight 20.8–23.3 V tolerance and +16.4 mV/°C TC allow ±1.5% output stability over −40 to +85 °C ambient. | Use Scenario: Sets overvoltage protection threshold in secondary-side feedback circuit of 20 V USB-C PD adapter. IC Role / Device Role / Timing Role: Clamping reference for optocoupler-driven TL431 replacement in isolated flyback feedback path. Use Value: 300 mW power rating and 55 Ω zener impedance ensure fast response to transient overvoltage events without latch-up. |
| Industrial Sensor Signal Conditioning | On-Board DC/DC Converter Biasing |
Use Scenario: Stabilizes excitation voltage for 4–20 mA loop-powered pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Low-drift voltage reference for DAC output buffer and analog front-end biasing. Use Value: ≤0.1 µA leakage at 17.6 V prevents loading error in high-impedance sensor bias networks. | Use Scenario: Supplies regulated gate drive bias for synchronous buck controller ICs in embedded power modules. IC Role / Device Role / Timing Role: Local 22 V rail generator for high-side MOSFET driver bootstrap capacitor charging. Use Value: SOT-23 footprint and J-STD-020 Level 1 compatibility enable direct integration into compact, high-density power stage layouts. |
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 (Diodes Inc.) | 22 V nominal, 20.9–23.1 V tolerance, 350 mW PD, 30 Ω ZZT @ 5 mA | Lower zener impedance improves regulation under dynamic load; higher PD allows greater margin in thermally constrained layouts | Preferred where tighter regulation and higher power headroom are critical; requires verification of SOT-23 pin compatibility |
| BZX84-C22,115 (Nexperia) | 22 V nominal, 20.8–23.3 V tolerance, 300 mW PD, 55 Ω ZZT @ 5 mA, same SOT-23 package | Identical electrical specs and mechanical form factor; differs only in marking code and reel packaging (7" vs. 13" reel) | Drop-in substitute for BZX84C22 RFG with no layout or schematic changes required |
Compared with MMBZ5247BS-7-F and BZX84-C22,115, the BZX84C22 RFG offers identical voltage tolerance and thermal performance but uses halogen-free molding compound and Level 1 moisture sensitivity - making it preferable for green manufacturing and high-yield SMT lines.
Availability
BZX84C22 RFG is available at Aetrix Electronics and suitable for LED driver reference, USB-C power adapter feedback, and industrial sensor signal conditioning requiring stable component supply across production volumes and long-lifecycle programs.
Supply support for BZX84C22 RFG 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
Taiwan Semiconductor Company (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, analog ICs, and ESD protection solutions since 1979.
The BZX84C series is part of TSC's surface-mount Zener diode product line, engineered for high-reliability voltage regulation in consumer, industrial, and automotive auxiliary systems with emphasis on manufacturability and environmental compliance.
FAQ
What is the zener voltage tolerance of BZX84C22 RFG at 5 mA test current?
The BZX84C22 RFG has a zener voltage range of 20.8 V to 23.3 V at IZT = 5 mA, corresponding to ±5% tolerance around the nominal 22 V rating. This specification is verified per Taiwan Semiconductor's F2001 datasheet and applies under pulsed test conditions (300 µs width, 5 ms period) at TA = 25 °C. The BZX84C22 RFG maintains this tolerance across its qualified operating temperature range.
Is BZX84C22 RFG RoHS and halogen-free compliant?
Yes, the BZX84C22 RFG is both RoHS compliant and halogen-free per IEC 61249-2-21. The "G" suffix in the ordering code explicitly denotes green compound formulation. Taiwan Semiconductor confirms full compliance in the official datasheet Version F2001, and the device carries appropriate marking and documentation for environmental regulatory acceptance in EU, China, and Japan markets. BZX84C22 RFG meets all applicable substance restrictions without exception.
What is the maximum junction temperature rating for BZX84C22 RFG?
The BZX84C22 RFG is rated for a maximum junction temperature (TJ) of +150 °C, with a minimum of −65 °C. This rating is specified in the Absolute Maximum Ratings table of the Taiwan Semiconductor datasheet and applies under continuous DC operation. Derating begins above 25 °C ambient per the published power derating curve (417 °C/W RθJA). BZX84C22 RFG maintains full parametric performance within this thermal envelope.
Does BZX84C22 RFG have moisture sensitivity level certification?
Yes, BZX84C22 RFG is rated Moisture Sensitivity Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30 °C/85% RH without dry-pack requirements or baking prior to reflow. This is confirmed in the Mechanical Data section of the Taiwan Semiconductor datasheet. The BZX84C22 RFG's Level 1 classification simplifies SMT line logistics and eliminates moisture-related popcorning risks during lead-free reflow.
What is the zener impedance of BZX84C22 RFG and why does it matter?
The BZX84C22 RFG has a zener impedance (ZZT) of 55 Ω measured at IZT = 5 mA and f = 1 kHz. This value quantifies how much the output voltage varies with changes in zener current - lower impedance yields tighter regulation under varying load conditions. In practice, the BZX84C22 RFG's 55 Ω impedance supports stable reference performance in feedback loops and low-noise bias networks where current ripple is present.
BZX84C22 RFG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- 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:
- ±5%
- 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 (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23
BZX84C22 RFG FAQ
1.How can I place an order for BZX84C22 RFG through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C22 RFG 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 BZX84C22 RFG reliable?
The price and inventory of BZX84C22 RFG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C22 RFG is usually 5 days.
3.What payment methods are accepted for BZX84C22 RFG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C22 RFG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C22 RFG?
BZX84C22 RFG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C22 RFG 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 BZX84C22 RFG?
For technical support, including BZX84C22 RFG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C22 RFG requirements.
6.How does Aetrix verify that BZX84C22 RFG is sourced from the original manufacturer or authorized distributors?
All BZX84C22 RFG 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 BZX84C22 RFG meets industry standards.
7.What is the process for return or replacement of BZX84C22 RFG?
All BZX84C22 RFG units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C22 RFG, 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 BZX84C22 RFG part is unused and in its original packaging.
Return procedure for BZX84C22 RFG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C22 RFG Tags
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