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Diodes Incorporated BZT52C22-7-F
- Part No.:
- BZT52C22-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C22-7-F.pdf
- Description:
- DIODE ZENER 22V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:190,732
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Product details
Overview
BZT52C22-7-F from Diodes Incorporated is a surface-mount 22 V Zener diode in SOD123 package, rated for 500 mW power dissipation at TL = +75°C and 370 mW at TA = +25°C, with ±5% zener voltage tolerance (20.8–23.3 V), 55 Ω maximum zener impedance at 5 mA test current, and 0.1 µA maximum reverse leakage at 16.4 V. It serves as a precision voltage reference or overvoltage clamp in low-power DC regulation circuits.
For engineers reviewing the BZT52C22-7-F datasheet, BZT52C22-7-F pinout, BZT52C22-7-F application, or BZT52C22-7-F equivalent, key selection criteria include zener voltage accuracy, thermal resistance (RθJA = 338 °C/W), SOD123 footprint compatibility, AEC-Q101 qualification status, and lead-free/Green compliance for automotive and industrial PCB assembly.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under controlled current conditions. Its planar die construction ensures consistent breakdown characteristics and low dynamic impedance (ZZT ≤ 55 Ω at IZT = 5 mA) for reliable voltage clamping in transient suppression and reference applications.
The device exhibits a positive temperature coefficient of +15.4 mV/°C near 22 V, enabling predictable drift behavior in temperature-varying environments. Its SOD123 package supports automated pick-and-place assembly and provides defined thermal performance on FR-4 PCBs with 1-inch copper pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22 V nominal, 20.8–23.3 V range at 5 mA - defines precise clamping threshold for protection or reference |
| Power Dissipation | 370 mW at TA = +25°C - limits continuous operating current to ~16.8 mA at 22 V |
| Zener Impedance | ≤55 Ω at IZT = 5 mA - ensures minimal voltage variation under load changes |
| Reverse Leakage | ≤0.1 µA at VR = 16.4 V - guarantees negligible standby current in high-impedance bias networks |
| Thermal Resistance | RθJA = 338 °C/W - requires thermal pad design for sustained power operation above ambient |
| Temperature Coefficient | +15.4 mV/°C - enables predictable voltage drift compensation in analog circuits |
Pinout & Package
Package: SOD123 - surface-mount plastic case with cathode band marking, 0.010 g weight, UL 94V-0 flammability rating, and matte tin-plated alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower potential side in reverse-biased configuration; forms reference ground point |
| Cathode | Zener breakdown terminal / voltage regulation output | Marked with band; connected to higher potential side; delivers regulated 22 V when reverse-biased |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures tight VZ distribution and repeatable breakdown characteristics across production lots |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Lead-free & RoHS compliant | Fully compliant with EU Directive 2011/65/EU; no intentionally added lead or halogens |
| SOD123 footprint | Standardized 2.65 mm × 1.55 mm outline compatible with high-volume SMT assembly lines |
Applications
| Industrial Sensor Signal Conditioning | Automotive Body Control Module (BCM) Power Monitoring |
|---|---|
Use Scenario: Stabilizing reference voltage for 12-bit ADC inputs measuring thermistor or pressure sensor outputs. IC Role / Device Role / Timing Role: Precision shunt voltage reference providing 22 V rail for op-amp biasing and ADC reference divider networks. Use Value: Tight 5% VZ tolerance and low ZZT ensure <±0.5% reference error over 0–70°C, improving measurement resolution by ≥1 LSB. |
Use Scenario: Clamping battery-sensed voltage before input to microcontroller GPIO during load-dump transients. IC Role / Device Role / Timing Role: Overvoltage protection element limiting sensed line voltage to 22 V during ISO 7637-2 Pulse 5a events. Use Value: 500 mW peak power rating absorbs 100 ms transients up to 22 V without degradation, preserving MCU input integrity. |
| Consumer USB-C Power Delivery Feedback | Medical Portable Diagnostic Device Bias Supply |
Use Scenario: Providing stable feedback voltage to secondary-side controller IC in isolated 20 V USB-PD adapter. IC Role / Device Role / Timing Role: Zener-based voltage divider reference for optocoupler feedback loop regulating output voltage. Use Value: Low 0.1 µA IR at 16.4 V minimizes quiescent current in feedback network, extending no-load efficiency by >0.3%. |
Use Scenario: Generating clean 22 V bias for photodiode transimpedance amplifier in handheld pulse oximeter. IC Role / Device Role / Timing Role: Low-noise voltage reference source powering analog front-end circuitry with minimal thermal drift. Use Value: +15.4 mV/°C TC allows predictable calibration offset correction, reducing factory trim time by 20%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5248BS-7-F | Same 22 V nominal, but SOT-323 package (smaller footprint, RθJA = 380 °C/W) | Higher thermal resistance limits continuous power to ~300 mW; better suited for space-constrained portable designs | Select when board area is critical and thermal margin permits lower derated power handling |
| BZX84-C22-7-F | 22 V Zener, SOT-23 package, 350 mW PD at TA = +25°C, RθJA = 300 °C/W | Lower power rating but superior thermal performance; not AEC-Q101 qualified | Prefer for cost-sensitive industrial controls where automotive qualification is unnecessary |
Compared with MMBZ5248BS-7-F and BZX84-C22-7-F, BZT52C22-7-F offers the highest power capability (370 mW) in a widely adopted SOD123 footprint and unique AEC-Q101 qualification-making it optimal for automotive and thermally demanding industrial voltage reference roles.
Availability
BZT52C22-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, USB-C power adapters, and medical diagnostic equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZT52C22-7-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 semiconductor company specializing in discrete, analog, and mixed-signal devices, with manufacturing and design centers across Asia, the US, and Europe.
BZT52C22-7-F belongs to the BZT52C series of general-purpose Zener diodes designed for medium-current voltage regulation and overvoltage protection in commercial and automotive applications.
FAQ
What is the maximum reverse voltage (VR) at which BZT52C22-7-F guarantees ≤0.1 µA leakage?
The datasheet specifies 0.1 µA maximum reverse current at VR = 16.4 V. This value is measured under standard conditions (TA = +25°C) and defines the upper limit of applied reverse bias before significant leakage begins-critical for designing high-impedance bias networks where leakage could shift operating points.
Can BZT52C22-7-F be used in place of a 24 V Zener diode like BZT52C24-7-F?
No-BZT52C22-7-F has a nominal zener voltage of 22 V (20.8–23.3 V range), while BZT52C24-7-F is rated for 24 V (22.8–25.6 V). Substituting them risks undervoltage clamping or insufficient protection margin; voltage-specific selection must match system requirements within tolerance bands.
Is the SOD123 package of BZT52C22-7-F compatible with reflow soldering per J-STD-020?
Yes-the device is qualified to moisture sensitivity level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30°C/60% RH and withstand standard Pb-free reflow profiles (peak 260°C) without baking or special handling, supporting robust automated assembly.
Does BZT52C22-7-F meet automotive qualification standards?
Yes-BZT52C22-7-F is explicitly qualified to AEC-Q101 standards, covering stress tests such as high-temperature reverse bias (HTRB), temperature cycling, and electrostatic discharge (ESD), making it approved for use in automotive electronic control units and body electronics.
BZT52C22-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±6%
- Power - Max:
- 500 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:
- SOD-123
BZT52C22-7-F FAQ
1.How can I place an order for BZT52C22-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C22-7-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 BZT52C22-7-F reliable?
The price and inventory of BZT52C22-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C22-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C22-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C22-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C22-7-F?
BZT52C22-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C22-7-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 BZT52C22-7-F?
For technical support, including BZT52C22-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C22-7-F requirements.
6.How does Aetrix verify that BZT52C22-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C22-7-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 BZT52C22-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C22-7-F?
All BZT52C22-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C22-7-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 BZT52C22-7-F part is unused and in its original packaging.
Return procedure for BZT52C22-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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