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Diodes Incorporated BZT52C22TQ-7-F
- Part No.:
- BZT52C22TQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZT52C22TQ-7-F.pdf
- Description:
- DIODE ZENER 22V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:2,900
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Product details
Overview
BZT52C22TQ-7-F from Diodes Incorporated is an automotive-grade surface-mount Zener diode with a nominal 22 V zener voltage, 5 mA test current, and 300 mW power dissipation in SOD523 package. It provides precise voltage regulation and overvoltage protection in low-power analog and digital supply rails, especially in automotive body control modules and sensor interface circuits.
For engineers reviewing the BZT52C22TQ-7-F datasheet, BZT52C22TQ-7-F pinout, BZT52C22TQ-7-F application, or BZT52C22TQ-7-F equivalent, key selection criteria include zener voltage tolerance (±5.0 %), low leakage current (≤0.1 µA at 16.4 V), temperature coefficient (+15.4 mV/°C), and AEC-Q101 qualification for automotive reliability.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable reference voltage under varying load and temperature conditions. Its 22 V nominal zener voltage is specified at 5 mA test current, with dynamic impedance of 55 Ω at IZT and 250 Ω at IZK, enabling predictable clamping behavior across operating current range.
The device uses a planar epitaxial junction structure in a molded plastic SOD523 package with matte tin–annealed terminals. Thermal resistance from junction to ambient is 417 °C/W on FR-4 board, supporting operation from –65 °C to +150 °C with full AEC-Q101 compliance for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22 V nominal, 20.8–23.3 V range at 5 mA - ensures ±5.0 % regulation tolerance in precision biasing |
| Power Dissipation (PD) | 300 mW - limits maximum continuous reverse power in compact SOD523 footprint |
| Zener Impedance (ZZT) | 55 Ω at 5 mA - defines small-signal AC impedance for noise-sensitive reference paths |
| Reverse Leakage (IR) | ≤0.1 µA at 16.4 V - enables ultra-low standby current in battery-backed circuits |
| Temperature Coefficient | +15.4 mV/°C - quantifies voltage drift per degree, critical for thermal stability in engine bay environments |
| Package | SOD523 - 1.25 mm × 0.85 mm × 0.65 mm footprint, compatible with high-density automotive PCB layouts |
| Qualification | AEC-Q101 qualified - validated for automotive use including temperature cycling, humidity, and mechanical shock |
Pinout & Package
Two-terminal device in SOD523 package: cathode marked by band on top surface; anode and cathode terminals are co-planar, solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail; establishes reverse-bias polarity |
| Cathode | Regulated output node | Provides stable 22 V reference when reverse biased; marked by visible band on package |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q101 compliant - meets stress testing requirements for automotive electronics including temperature cycling and HAST |
| Green construction | Halogen- and antimony-free molding compound (<900 ppm Br+Cl, <1000 ppm Sb) - satisfies EU ELV and RoHS 2 directives |
| Low-profile packaging | SOD523 case with 0.65 mm max height - enables placement beneath connectors or in tight board-to-board gaps |
| Thermal performance | 160 °C/W junction-to-case thermal resistance - supports localized heat extraction via copper pour under die pad |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating reference voltage for microcontroller ADC inputs monitoring door lock status and interior lighting. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference for 3.3 V LDO input stage and analog front-end biasing. Use Value: Maintains stable 22 V clamp during load dump transients up to 35 V, preventing LDO overvoltage failure. | Use Scenario: Protecting 24 V industrial IO module inputs from ESD and field-wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed before TVS diode and signal conditioner IC. Use Value: Limits transient energy to <100 mJ at 22 V clamping level, reducing stress on downstream protection components. |
| Automotive Cabin Temperature Sensor | Medical Portable Diagnostic Device |
Use Scenario: Providing stable bias for thermistor bridge in HVAC control unit exposed to –40 °C to +125 °C ambient. IC Role / Device Role / Timing Role: Precision voltage reference for ratiometric measurement circuitry. Use Value: +15.4 mV/°C tempco enables software compensation; ±5 % VZ tolerance ensures <1.1 °C absolute error in 25 °C calibration. | Use Scenario: Stabilizing reference voltage for battery fuel gauge IC in portable ultrasound probe. IC Role / Device Role / Timing Role: Low-leakage (≤0.1 µA) shunt regulator maintaining accuracy during multi-week standby mode. Use Value: Enables >10-year shelf life without measurable battery drain from reference path current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5247BQ-7-F | Same 22 V nominal VZ, but SOD123 package (2.7 × 1.6 mm); higher PD = 500 mW; no AEC-Q101 rating | Preferred for non-automotive industrial designs requiring higher power margin and manual reworkability | Select when board space allows larger footprint and AEC-Q101 is not required |
| BZX84-C22-7-F | 22 V VZ, SOT-23 package; PD = 350 mW; AEC-Q101 qualified; higher ZZT = 70 Ω | Suitable for same automotive functions but with less stringent impedance requirements and greater thermal mass | Choose when lower dynamic impedance is not critical and existing SOT-23 footprint reuse is prioritized |
Compared with MMSZ5247BQ-7-F and BZX84-C22-7-F, BZT52C22TQ-7-F delivers the smallest PCB area (SOD523), lowest leakage (0.1 µA), and guaranteed automotive qualification - making it optimal for space-constrained, battery-sensitive, and safety-critical vehicle subsystems.
Availability
BZT52C22TQ-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, medical portable diagnostics, and cabin environmental control systems requiring stable component supply and long-term lifecycle assurance.
Supply support for BZT52C22TQ-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, serving automotive, industrial, computing, and consumer markets with high-reliability components.
The BZT52C series belongs to Diodes' automotive-qualified Zener portfolio, designed specifically for voltage regulation and transient suppression in harsh-environment electronic control units where size, leakage, and qualification rigor are critical.
FAQ
What is the maximum reverse voltage (VR) at which leakage remains ≤0.1 µA?
The BZT52C22TQ-7-F exhibits ≤0.1 µA reverse leakage current at VR = 16.4 V, as specified in the Electrical Characteristics table. This value corresponds to 75 % of the nominal 22 V zener voltage and defines the practical upper limit for low-leakage operation before significant conduction begins.
Can this Zener diode be used in parallel for higher power handling?
No - Zener diodes should not be paralleled due to mismatched breakdown voltages causing current hogging and thermal runaway. For higher power, select a single device with appropriate PD rating (e.g., 500 mW SOD123 variant) or implement active regulation instead.
Is the SOD523 package compatible with standard reflow profiles for lead-free assembly?
Yes - the SOD523 package is rated for moisture sensitivity level 1 per J-STD-020 and supports standard IPC/JEDEC J-STD-020D reflow profiles, including peak temperatures up to 260 °C for ≤60 seconds, with no bake requirement prior to assembly.
Does the "Q" in the part number indicate AEC-Q101 qualification?
Yes - the "Q" suffix in BZT52C22TQ-7-F explicitly denotes AEC-Q101 qualification per Diodes Incorporated's ordering nomenclature. All electrical, thermal, and reliability specifications in the datasheet apply to the Q-grade version unless otherwise noted.
BZT52C22TQ-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±5.68%
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
BZT52C22TQ-7-F FAQ
1.How can I place an order for BZT52C22TQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C22TQ-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 BZT52C22TQ-7-F reliable?
The price and inventory of BZT52C22TQ-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 BZT52C22TQ-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C22TQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C22TQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C22TQ-7-F?
BZT52C22TQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C22TQ-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 BZT52C22TQ-7-F?
For technical support, including BZT52C22TQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C22TQ-7-F requirements.
6.How does Aetrix verify that BZT52C22TQ-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C22TQ-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 BZT52C22TQ-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C22TQ-7-F?
All BZT52C22TQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C22TQ-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 BZT52C22TQ-7-F part is unused and in its original packaging.
Return procedure for BZT52C22TQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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