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Diodes Incorporated BZT52C22Q-7-F
- Part No.:
- BZT52C22Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C22Q-7-F.pdf
- Description:
- DIODE ZENER 22V 370MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:4,963
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Product details
Overview
BZT52C22Q-7-F from Diodes Incorporated is an automotive-grade surface-mount Zener diode with a nominal zener voltage of 22 V, ±5% tolerance (20.8–23.3 V), 500 mW power dissipation at TL = +75°C, and 370 mW at TA = +25°C. It features SOD123 package, AEC-Q101 qualification, and is used for precision voltage regulation and overvoltage protection in automotive body control modules.
For engineers reviewing the BZT52C22Q-7-F datasheet, BZT52C22Q-7-F pinout, BZT52C22Q-7-F application, or BZT52C22Q-7-F equivalent, key selection criteria include zener voltage accuracy at 5 mA test current, low dynamic impedance (55 Ω @ IZT), temperature coefficient (+15.4 mV/°C), and automotive reliability compliance under AEC-Q101.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage across load variations. Its planar die construction ensures consistent breakdown characteristics and low leakage, with IR ≤ 0.1 µA at VR = 16.4 V.
Thermal performance is defined by RθJA = 338 °C/W (on FR-4 with 1-inch copper pad) and RθJL = 150 °C/W, enabling reliable operation from –65 °C to +150 °C ambient and junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22 V nominal, 20.8–23.3 V min/max at IZT = 5 mA - defines regulated output voltage window under standard bias |
| Power Dissipation (PD) | 370 mW @ TA = +25°C - maximum continuous power before thermal derating begins |
| Zener Impedance (ZZT) | 55 Ω @ IZT = 5 mA - indicates voltage stability under small-signal AC load variation |
| Reverse Leakage (IR) | ≤ 0.1 µA @ VR = 16.4 V - ensures minimal standby current in voltage-reference circuits |
| Temperature Coefficient | +15.4 mV/°C - quantifies zener voltage drift per degree Celsius rise, critical for temperature-stable references |
| Package | SOD123 - compact 2-pin surface-mount outline with cathode band polarity marking and 0.010 g mass |
Pinout & Package
Package: SOD123 - molded plastic case, UL 94V-0 flammability rating, matte tin-plated alloy 42 leadframe, cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; reverse-biased during regulation |
| Cathode | Zener breakdown terminal / voltage reference output | Connected to regulated node; maintains ~22 V above anode when reverse-biased ≥16.4 V |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and infotainment power rails |
| Green, halogen-free construction | Meets <900 ppm Br/Cl and <1000 ppm Sb; supports RoHS 2 and automotive environmental compliance |
| Low Zener impedance | 55 Ω at 5 mA enables tight voltage regulation under dynamic load transients |
| Stable temperature coefficient | +15.4 mV/°C allows predictable compensation in temperature-critical reference designs |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 22 V reference for microcontroller ADC input scaling in BCM power management subsystems. IC Role / Device Role / Timing Role: Voltage reference diode providing stable bias point for analog front-end circuitry. Use Value: Maintains ±1.5% reference accuracy over –40 °C to +125 °C operating range, reducing calibration drift. |
Use Scenario: Clamping and regulating supply rail for 4–20 mA transmitter ICs in factory automation sensors. IC Role / Device Role / Timing Role: Overvoltage protector and precision shunt regulator for analog signal chain power domains. Use Value: Limits transient-induced errors with <0.1 µA leakage at 16.4 V, preserving sensor measurement integrity. |
| Automotive Infotainment Power Sequencing | LED Driver Current Reference |
Use Scenario: Providing controlled startup voltage threshold for sequenced enable signals in head unit DC-DC converters. IC Role / Device Role / Timing Role: Zener-based voltage detector triggering power-on reset logic after rail stabilization. Use Value: Enables accurate 22 V trip point with <5% tolerance, ensuring deterministic sequencing across temperature. |
Use Scenario: Setting reference voltage for constant-current LED driver feedback loop in automotive lighting systems. IC Role / Device Role / Timing Role: Shunt reference establishing precise current setpoint via sense resistor divider. Use Value: Delivers <1% regulation error at 5 mA bias, maintaining luminance consistency across vehicle battery voltage swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5247B-TP (Micro Commercial) | Zener voltage 22 V (±5%), PD = 500 mW, SOD-123, but not AEC-Q101 qualified | Limited to commercial-grade industrial or consumer applications; no automotive qualification | Select when cost sensitivity outweighs automotive reliability requirements |
| BZX84-C22 (Nexperia) | Zener voltage 22 V (±5%), PD = 300 mW, SOT-23 package, AEC-Q101 qualified | Lower power rating and different footprint - requires PCB redesign and thermal reassessment | Choose only if SOT-23 layout compatibility and legacy design reuse are prioritized over power margin |
Compared with MMSZ5247B-TP and BZX84-C22, BZT52C22Q-7-F uniquely combines AEC-Q101 qualification, 370 mW ambient-rated power, and SOD123 mechanical compatibility - making it the only drop-in solution for automotive voltage reference designs requiring both reliability and thermal headroom.
Availability
BZT52C22Q-7-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, infotainment power sequencing, and LED driver current reference applications requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZT52C22Q-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, specializing in high-reliability components for automotive, industrial, and computing markets.
The BZT52 series belongs to Diodes' automotive-qualified Zener diode product line, engineered specifically for stable voltage reference and overvoltage protection in harsh-environment electronic control units.
FAQ
What is the maximum reverse voltage (VR) at which BZT52C22Q-7-F guarantees IR ≤ 0.1 µA?
The datasheet specifies IR ≤ 0.1 µA at VR = 16.4 V. This value is derived from the "Maximum Reverse Current" column for BZT52C22 in the Electrical Characteristics table and represents the highest reverse voltage at which leakage remains within that limit - critical for low-power reference stability.
Does BZT52C22Q-7-F have a specified capacitance value?
No capacitance value is specified in the DS18004 datasheet for BZT52C22Q-7-F. Figure 5 shows typical total capacitance vs. nominal zener voltage, estimating ~15 pF for 22 V devices at VR = 1 V and f = 1 MHz, but this is not a guaranteed parameter and must be verified experimentally in target circuit conditions.
Can BZT52C22Q-7-F be used in place of BZT52C22-7-F in a commercial design?
Yes, but only if automotive qualification is unnecessary. The "Q" suffix denotes AEC-Q101 qualification and identical electrical specs; the non-Q version lacks automotive stress testing. For commercial use, the Q-part functions identically but carries higher assurance - though at slightly higher cost and longer lead time.
What is the thermal resistance from junction to ambient (RθJA) for BZT52C22Q-7-F on a standard FR-4 board?
RθJA = 338 °C/W, measured on FR-4 PCB with 1-inch copper pad layout (Note 8). This value governs ambient temperature derating - e.g., at TA = +85°C, maximum allowable power drops to ~185 mW using the curve in Figure 1.
BZT52C22Q-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:
- ±5.68%
- Power - Max:
- 370 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52C22Q-7-F FAQ
1.How can I place an order for BZT52C22Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C22Q-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 BZT52C22Q-7-F reliable?
The price and inventory of BZT52C22Q-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 BZT52C22Q-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C22Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C22Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C22Q-7-F?
BZT52C22Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C22Q-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 BZT52C22Q-7-F?
For technical support, including BZT52C22Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C22Q-7-F requirements.
6.How does Aetrix verify that BZT52C22Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C22Q-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 BZT52C22Q-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C22Q-7-F?
All BZT52C22Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C22Q-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 BZT52C22Q-7-F part is unused and in its original packaging.
Return procedure for BZT52C22Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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