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Diodes Incorporated BZT52C22SQ-7-F
- Part No.:
- BZT52C22SQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZT52C22SQ-7-F.pdf
- Description:
- DIODE ZENER 22V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,630
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Product details
Overview
BZT52C22SQ-7-F from Diodes Incorporated is a surface-mount Zener diode with nominal zener voltage 22 V, 5 mA test current, 200 mW power dissipation, and SOD323 package. It provides precise voltage regulation in low-power biasing, reference, and overvoltage protection circuits for automotive and industrial control modules.
For engineers reviewing the BZT52C22SQ-7-F datasheet, BZT52C22SQ-7-F pinout, BZT52C22SQ-7-F application, or BZT52C22SQ-7-F equivalent, key selection criteria include zener voltage tolerance (±5%), dynamic impedance (55 Ω @ 5 mA), temperature coefficient (+15.4 mV/°C), reverse leakage (<0.1 µA @ 16.4 V), and AEC-Q101 qualification for automotive use.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load or supply conditions. Its planar die construction ensures consistent breakdown characteristics, while the SOD323 package supports high-density PCB layouts and automated assembly.
The device exhibits a positive temperature coefficient of +15.4 mV/°C, indicating increasing zener voltage with rising junction temperature. Maximum power dissipation is derated linearly above +25°C ambient, with thermal resistance of 625°C/W on FR-4 board per recommended 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 regulated output voltage tolerance |
| Power Dissipation (PD) | 200 mW at TA = +25°C - sets maximum continuous power handling before thermal derating |
| Zener Impedance (ZZT) | 55 Ω at IZT = 5 mA - determines regulation stiffness under small-signal load variation |
| Reverse Leakage (IR) | <0.1 µA at VR = 16.4 V - ensures minimal quiescent current in standby bias networks |
| Temperature Coefficient | +15.4 mV/°C - quantifies voltage drift with temperature, critical for precision references |
| Package | SOD323 - 1.3 mm × 1.7 mm surface-mount outline enabling compact, high-yield placement |
Pinout & Package
Two-terminal device in SOD323 package: anode and cathode marked by cathode band on top surface. No internal leads; terminals are solderable matte tin-plated alloy 42 leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to circuit common or lower-potential rail during regulation |
| Cathode | Reverse-biased Zener terminal / regulated output node | Provides stable 22 V reference when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control and body electronics |
| Lead-free & RoHS compliant | Fully compliant with EU Directive 2011/65/EU; no intentionally added lead or halogens |
| Moisture Sensitivity Level 1 | Unlimited floor life at ≤30°C/60% RH - eliminates baking requirement prior to reflow |
| Planar die construction | Ensures tight parametric distribution and long-term stability of zener voltage |
Applications
| Automotive ECU Power Monitoring | Industrial Sensor Reference Supply |
|---|---|
Use Scenario: Monitoring 24 V vehicle battery rail for undervoltage/overvoltage events in engine control units. IC Role / Device Role / Timing Role: Zener clamping element providing stable 22 V reference for comparator input thresholds. Use Value: Enables accurate detection of battery faults within ±0.5 V margin using standard op-amps without external regulators. | Use Scenario: Generating stable bias voltage for analog front-end amplifiers in 4–20 mA loop-powered pressure sensors. IC Role / Device Role / Timing Role: Precision shunt reference supplying regulated 22 V to op-amp rails and sensor excitation circuitry. Use Value: Maintains sensor linearity and offset stability over -40°C to +125°C with <0.1 µA leakage at 16.4 V reverse bias. |
| USB-C PD Protection Clamp | Programmable Logic Controller Input Conditioning |
Use Scenario: Overvoltage clamp on USB-C power delivery negotiation lines exposed to transient surges. IC Role / Device Role / Timing Role: Fast-response shunt protector limiting voltage spikes to 23.3 V peak during ESD or load dump events. Use Value: Prevents damage to USB PD controller ICs rated for 24 V max, leveraging 55 Ω dynamic impedance for low overshoot. | Use Scenario: Input signal conditioning for 24 V digital inputs in industrial PLC backplanes subject to field wiring transients. IC Role / Device Role / Timing Role: Front-end voltage limiter protecting optocoupler LED drivers from sustained overvoltage. Use Value: Ensures reliable logic-level recognition while surviving 100 ms overvoltage up to 23.3 V without degradation. |
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 package, no AEC-Q101 qualification | Higher power rating but larger footprint; suitable for non-automotive industrial use only | Select when higher power margin is needed and AEC-Q101 is not required |
| BZX84-C22 (Nexperia) | Zener voltage 22 V ±5%, PD = 300 mW, SOT-23 package, AEC-Q101 qualified | Larger SOT-23 footprint; different thermal resistance (450°C/W) and higher capacitance (40 pF) | Choose when board space allows SOT-23 and lower dynamic impedance (30 Ω) is prioritized |
Compared with MMSZ5247B-TP and BZX84-C22, BZT52C22SQ-7-F offers optimal balance of AEC-Q101 compliance, SOD323 miniaturization, and 200 mW power capability-making it preferred for space-constrained automotive modules where reliability and footprint are co-critical.
Availability
BZT52C22SQ-7-F is available at Aetrix Electronics and suitable for automotive ECU monitoring, industrial sensor reference supplies, USB-C PD protection clamps, and PLC input conditioning requiring stable component supply across production lifecycles.
Supply support for BZT52C22SQ-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, with design, manufacturing, and sales operations worldwide.
The BZT52C series belongs to Diodes' automotive-grade Zener diode product line, engineered specifically for voltage regulation and transient suppression in harsh-environment electronic control units and sensor interfaces.
FAQ
What is the maximum reverse voltage before breakdown for BZT52C22SQ-7-F?
The nominal zener voltage is 22 V with a guaranteed range of 20.8 V to 23.3 V at 5 mA test current. Breakdown occurs within this range depending on unit-to-unit variation and operating temperature; the device is not rated for continuous operation above 23.3 V in regulation mode.
Is BZT52C22SQ-7-F suitable for use in high-humidity environments?
Yes - it meets J-STD-020 Moisture Sensitivity Level 1, meaning it can be stored indefinitely at ≤30°C/60% RH without baking. The molded plastic case carries UL 94V-0 flammability rating and fully encapsulates the die against moisture ingress.
How does the temperature coefficient affect circuit performance?
With a +15.4 mV/°C coefficient, the zener voltage increases ~1.54 V over a 100°C rise (e.g., from −40°C to +60°C). This must be accounted for in precision references; however, it improves stability in temperature-compensated designs when paired with negative-coefficient components.
Can BZT52C22SQ-7-F replace older BZT52C22S variants in existing designs?
Yes - the "Q" suffix denotes automotive qualification (AEC-Q101), while electrical parameters and SOD323 mechanical dimensions match the commercial BZT52C22S. The only differences are enhanced process controls and traceability; no layout or schematic changes are required for drop-in replacement.
BZT52C22SQ-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±5.68%
- Power - Max:
- 200 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-323
BZT52C22SQ-7-F FAQ
1.How can I place an order for BZT52C22SQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C22SQ-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 BZT52C22SQ-7-F reliable?
The price and inventory of BZT52C22SQ-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 BZT52C22SQ-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C22SQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C22SQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C22SQ-7-F?
BZT52C22SQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C22SQ-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 BZT52C22SQ-7-F?
For technical support, including BZT52C22SQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C22SQ-7-F requirements.
6.How does Aetrix verify that BZT52C22SQ-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C22SQ-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 BZT52C22SQ-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C22SQ-7-F?
All BZT52C22SQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C22SQ-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 BZT52C22SQ-7-F part is unused and in its original packaging.
Return procedure for BZT52C22SQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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