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Diodes Incorporated BZT52C22-13
- Part No.:
- BZT52C22-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C22-13.pdf
- Description:
- DIODE ZENER 22V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:7,902
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Product details
Overview
BZT52C22-13 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, and 0.1 µA maximum reverse leakage at 16.4 V. It serves as a precision voltage reference or overvoltage clamp in low-power analog and digital supply rails.
For engineers reviewing the BZT52C22-13 datasheet, BZT52C22-13 pinout, BZT52C22-13 application, or BZT52C22-13 equivalent, this page delivers verified electrical parameters, thermal derating behavior, SOD123 mechanical layout, and AEC-Q101-qualified alternatives for automotive and industrial voltage regulation designs.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load or input conditions. Its planar die construction ensures consistent breakdown characteristics and low thermal resistance (RθJA = 338 °C/W on FR-4 with 1-inch copper pad).
The device exhibits a positive temperature coefficient of +15.4 mV/°C near 22 V, enabling predictable drift compensation in temperature-sensitive references. It is qualified to AEC-Q101 for high-reliability automotive use and features matte tin-plated alloy 42 leads for robust solderability per MIL-STD-202.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22 V nominal, 20.8–23.3 V range at 5 mA - defines clamping threshold for overvoltage protection |
| Power Dissipation | 370 mW at +25°C ambient - limits continuous current to ~16.8 mA at 22 V without heatsinking |
| Zener Impedance (ZZT) | 55 Ω max at 5 mA - determines output voltage variation under dynamic load changes |
| Reverse Leakage (IR) | 0.1 µA max at 16.4 V - ensures minimal quiescent current in standby or battery-powered circuits |
| Thermal Resistance (RθJA) | 338 °C/W - requires PCB copper area management to avoid junction overheating above +75°C lead temp |
| Temperature Coefficient | +15.4 mV/°C - enables predictable voltage shift for temperature-compensated reference designs |
Pinout & Package
Package: SOD123 - surface-mount plastic case (UL 94V-0), 0.010 g weight, cathode band marking, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; reverse-biased operation requires cathode at higher potential |
| Cathode | Zener breakdown terminal / voltage reference output | Connected to regulated node; clamps voltage to 22 V when reverse current exceeds knee threshold (~0.25 mA) |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures tight VZ distribution and repeatable breakdown characteristics across production lots |
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control modules and body electronics |
| Lead-free & halogen-free | Fully RoHS-compliant with <900 ppm Br/Cl and <1000 ppm Sb - meets green manufacturing requirements |
| SOD123 footprint | Enables automated pick-and-place assembly and reflow compatibility with standard SMT processes |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Voltage reference for ADC biasing in door module microcontrollers operating from 12 V battery rail with ±15% variation. IC Role / Device Role / Timing Role: Zener clamping element providing stable 22 V reference for internal LDO feedback or external analog front-end scaling. Use Value: Maintains reference accuracy within ±1.5% over -40°C to +125°C ambient due to known +15.4 mV/°C TC and AEC-Q101 reliability validation. |
Use Scenario: Overvoltage protection for 24 V industrial I/O inputs exposed to transient surges up to 40 V. IC Role / Device Role / Timing Role: Shunt regulator limiting input voltage to downstream protection ICs and signal isolators. Use Value: Clamps transients at ≤23.3 V with 55 Ω dynamic impedance, limiting peak current to <300 mA during 100 ns surge events. |
| Consumer Power Adapter Feedback | Medical Diagnostic Equipment Reference |
|
Use Scenario: Secondary-side voltage sensing in flyback converters delivering 5 V/3.3 V outputs with ±5% regulation. IC Role / Device Role / Timing Role: Zener-based optocoupler feedback divider setting precise output voltage via TL431-compatible bias network. Use Value: Enables ±2% output regulation across line/load variations using only two resistors and this 22 V Zener in series with TL431 cathode. |
Use Scenario: Precision voltage reference for ECG front-end instrumentation amplifiers requiring stable DC offset calibration. IC Role / Device Role / Timing Role: Low-noise, low-drift shunt reference establishing 22 V rail for op-amp biasing and DAC reference buffers. Use Value: Delivers <0.1 µA leakage at 16.4 V and 55 Ω impedance - minimizes offset drift and improves CMRR in high-gain analog stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5247B-7-F | 22 V nominal, ±5%, 500 mW, SOD123, but 100 Ω ZZT @ 20 mA vs. 55 Ω @ 5 mA | Higher test current shifts knee point; less suitable for low-current bias networks | Select when higher power handling at elevated current is prioritized over low-current regulation stability |
| BZX84-C22 | 22 V nominal, ±5%, 350 mW, SOT23 package, 60 Ω ZZT @ 5 mA, no AEC-Q101 qualification | Smaller footprint but lower power rating and unqualified for automotive environments | Select for space-constrained consumer PCBs where AEC-Q101 compliance is not required |
Compared with MMSZ5247B-7-F and BZX84-C22, BZT52C22-13 offers superior low-current regulation (55 Ω @ 5 mA), AEC-Q101 qualification, and tighter thermal resistance control - making it optimal for automotive and industrial applications demanding long-term stability under thermal cycling.
Availability
BZT52C22-13 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, consumer power adapter feedback loops, and medical diagnostic equipment requiring stable component supply with full traceability and lifecycle support.
Supply support for BZT52C22-13 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, specializing in high-reliability components for automotive, industrial, and computing markets.
The BZT52C series belongs to Diodes' general-purpose Zener diode product line, designed specifically for cost-effective, high-volume voltage regulation and overvoltage protection in surface-mount applications requiring AEC-Q101 qualification.
FAQ
What is the maximum continuous reverse current this Zener can handle at 22 V?
The BZT52C22-13 is rated for 370 mW at +25°C ambient, allowing a maximum continuous reverse current of approximately 16.8 mA at 22 V (P = V × I). Derating applies above +25°C per Figure 1 - at +75°C lead temperature, power drops to 500 mW, permitting up to ~22.7 mA, but junction temperature must remain ≤+150°C.
Does this part have a specified capacitance value?
No capacitance specification is provided in the DS18004 datasheet for BZT52C22-13. Figure 5 shows typical total capacitance versus nominal Zener voltage, estimating ~15 pF for 22 V devices at 1 MHz and 1 V reverse bias, but this is not a guaranteed parameter and should be verified experimentally in high-frequency applications.
Can BZT52C22-13 replace BZT52C22-7-F in existing designs?
Yes - both share identical electrical specifications, SOD123 package, and AEC-Q101 qualification. The only difference is packaging quantity: -7-F is 3,000 units per reel, while -13-F is 10,000 units per reel. No layout, thermal, or electrical redesign is needed for substitution.
Is the cathode band polarity confirmed for SOD123 orientation?
Yes - the cathode is marked by a visible band at the top edge of the SOD123 package, aligned with the anode lead on the opposite side. Top view shows cathode band adjacent to the shorter lead (cathode), matching Diodes Incorporated's standard SOD123 pinout and JEDEC MO-202AC outline.
BZT52C22-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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
BZT52C22-13 FAQ
1.How can I place an order for BZT52C22-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C22-13 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 BZT52C22-13 reliable?
The price and inventory of BZT52C22-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C22-13 is usually 5 days.
3.What payment methods are accepted for BZT52C22-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C22-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C22-13?
BZT52C22-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C22-13 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 BZT52C22-13?
For technical support, including BZT52C22-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C22-13 requirements.
6.How does Aetrix verify that BZT52C22-13 is sourced from the original manufacturer or authorized distributors?
All BZT52C22-13 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 BZT52C22-13 meets industry standards.
7.What is the process for return or replacement of BZT52C22-13?
All BZT52C22-13 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C22-13, 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 BZT52C22-13 part is unused and in its original packaging.
Return procedure for BZT52C22-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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