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Diodes Incorporated BZT52HC22WFQ-7
- Part No.:
- BZT52HC22WFQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52HC22WFQ-7.pdf
- Description:
- DIODE ZENER 22V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:2,066
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Product details
Overview
BZT52HC22WFQ from Diodes Incorporated is an AEC-Q101 qualified surface-mount Zener diode with nominal zener voltage 22 V (20.8–23.3 V range), 5 mA test current, 25 Ω maximum zener impedance at 5 mA, and 375 mW power dissipation on standard FR-4 PCB. It serves as a precision voltage reference or overvoltage clamp in automotive power rail monitoring circuits.
For engineers reviewing the BZT52HC22WFQ datasheet, BZT52HC22WFQ pinout, BZT52HC22WFQ application, or BZT52HC22WFQ equivalent, key selection criteria include its ±5% zener tolerance at 5 mA, low 0.05 µA reverse leakage at 15.4 V, -2.0 to +2.5 mV/°C temperature coefficient, and SOD123F package compatibility with high-density automotive PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode to regulate or clamp voltage at 22 V with tight tolerance and low dynamic impedance. Its thermal resistance of 330 °C/W (FR-4, minimum pad) and 150 °C/W (1 cm² cathode pad) enables stable operation across -65 °C to +150 °C ambient range.
The device features a cathode band polarity marker, matte tin–annealed copper alloy terminals, and UL 94V-0 molded plastic housing. It meets IATF 16949 manufacturing standards and supports PPAP documentation for automotive qualification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20.8–23.3 V at IZT = 5 mA - defines clamping threshold for 24 V nominal systems |
| Zener Impedance (ZZT) | 25 Ω max at 5 mA - ensures minimal voltage deviation under load transients |
| Power Dissipation (PD) | 375 mW on FR-4 with minimum pad - sets continuous clamp energy limit in compact layouts |
| Reverse Leakage (IR) | 0.05 µA at VR = 15.4 V - guarantees negligible standby current in always-on circuits |
| Temperature Coefficient | -2.0 to +2.5 mV/°C - enables predictable drift compensation in engine bay environments |
| Capacitance (CT) | 60 pF at f = 1 MHz, VR = 0 V - limits high-frequency noise coupling in signal conditioning paths |
Pinout & Package
Package: SOD123F - flat-lead, low-profile surface-mount package with 0.015 g mass, UL 94V-0 molding compound, and moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to lower-potential node; reverse-biased during regulation |
| Cathode | Zener breakdown terminal / voltage reference output | Marked with band; connected to regulated rail or protection node |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics per stress test requirements |
| IATF 16949 manufacturing | Ensures consistent lot-to-lot performance and traceable process control |
| Halogen- and antimony-free "Green" construction | <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - meets global environmental compliance mandates |
| Low-profile SOD123F footprint | 1.80 mm × 2.70 mm × 1.15 mm - enables placement adjacent to ICs in space-constrained modules |
Applications
| Automotive Battery Monitoring | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Monitoring 24 V battery rail voltage in ADAS ECUs with microcontroller ADC input. IC Role / Device Role / Timing Role: Zener clamp protecting ADC input from load dump spikes up to 35 V. Use Value: 22 V breakdown prevents ADC saturation while 0.05 µA leakage avoids measurement offset error. |
Use Scenario: Stabilizing excitation voltage for 4–20 mA current-loop pressure sensors. IC Role / Device Role / Timing Role: Precision shunt reference providing stable bias to op-amp current source. Use Value: ±5% VZ tolerance and 25 Ω ZZT ensure <±0.1% output current accuracy over temperature. |
| USB-C Power Delivery Protection | Telecom Line Interface Clamp |
|
Use Scenario: Overvoltage protection on VBUS line during USB-C PD negotiation faults. IC Role / Device Role / Timing Role: Fast-response clamp limiting transient overshoot to safe levels for PMIC input. Use Value: 60 pF capacitance minimizes signal integrity impact on 5–20 V PD communication waveforms. |
Use Scenario: Secondary-side surge suppression on telecom line interface cards. IC Role / Device Role / Timing Role: Low-leakage clamp absorbing induced lightning surges without loading idle lines. Use Value: 0.05 µA IR at 15.4 V eliminates false fault detection in high-impedance line monitoring circuits. |
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 | Zener voltage 20 V (19–21 V), 350 mW PD, 30 Ω ZZT, SOD-123 package | Narrower voltage range suits 12 V system clamping; higher leakage (0.1 µA) | Select when tighter 20 V tolerance is required and 0.05 µA leakage is not critical |
| BZX84-C22 | Zener voltage 22 V (20.9–23.1 V), 350 mW PD, 55 Ω ZZT, SOT-23 package | Larger 55 Ω impedance causes greater regulation error under load; SOT-23 less thermally robust | Prefer only for legacy SOT-23 board reuse where SOD123F rework is impractical |
Compared with MMSZ5247B-7-F and BZX84-C22, BZT52HC22WFQ delivers superior thermal stability via SOD123F's lower RθJA, tighter 22 V tolerance, and lowest leakage-making it optimal for automotive-grade 24 V rail protection where long-term reliability and low standby current are mandatory.
Availability
BZT52HC22WFQ is available at Aetrix Electronics and suitable for automotive battery monitoring, industrial sensor signal conditioning, USB-C power delivery protection, and telecom line interface clamp applications requiring stable component supply and AEC-Q101 compliance.
Supply support for BZT52HC22WFQ 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 BZT52HC series targets automotive-grade voltage regulation, designed specifically for AEC-Q101 compliance, PPAP readiness, and operation in harsh-temperature environments like engine control units and ADAS modules.
FAQ
What is the maximum reverse voltage before breakdown for BZT52HC22WFQ?
The BZT52HC22WFQ exhibits a guaranteed zener breakdown between 20.8 V and 23.3 V at 5 mA test current. Below 15.4 V, reverse leakage remains ≤0.05 µA; no hard "maximum reverse voltage" is specified outside this range, as the device is intended for controlled breakdown operation.
Can BZT52HC22WFQ be used in place of a 24 V Zener diode?
No-it is rated for 22 V nominal regulation (20.8–23.3 V range), not 24 V. Using it as a 24 V clamp risks premature breakdown during normal operation. For 24 V systems, BZT52HC24WFQ (22.8–25.6 V) is the correct variant with validated parameters.
Does BZT52HC22WFQ require a heatsink in typical automotive applications?
No external heatsink is needed. Its SOD123F package achieves 150 °C/W thermal resistance when mounted on a 1 cm² cathode pad, enabling full 375 mW dissipation at +125 °C ambient-sufficient for intermittent clamp duty in most automotive modules without added thermal mass.
How does the temperature coefficient affect regulation accuracy over temperature?
With a TC of -2.0 to +2.5 mV/°C, the zener voltage shifts by ≤±0.25 V over a 100 °C range (e.g., -40 °C to +60 °C). This corresponds to ≤±1.1% drift relative to 22 V, which is acceptable for non-precision clamping but insufficient for metrology-grade references.
BZT52HC22WFQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±7.04%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 50 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-123F
BZT52HC22WFQ-7 FAQ
1.How can I place an order for BZT52HC22WFQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52HC22WFQ-7 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 BZT52HC22WFQ-7 reliable?
The price and inventory of BZT52HC22WFQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52HC22WFQ-7 is usually 5 days.
3.What payment methods are accepted for BZT52HC22WFQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52HC22WFQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52HC22WFQ-7?
BZT52HC22WFQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52HC22WFQ-7 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 BZT52HC22WFQ-7?
For technical support, including BZT52HC22WFQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52HC22WFQ-7 requirements.
6.How does Aetrix verify that BZT52HC22WFQ-7 is sourced from the original manufacturer or authorized distributors?
All BZT52HC22WFQ-7 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 BZT52HC22WFQ-7 meets industry standards.
7.What is the process for return or replacement of BZT52HC22WFQ-7?
All BZT52HC22WFQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52HC22WFQ-7, 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 BZT52HC22WFQ-7 part is unused and in its original packaging.
Return procedure for BZT52HC22WFQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52HC22WFQ-7 Tags
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