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Diodes Incorporated BZT52HC8V2WFQ-7
- Part No.:
- BZT52HC8V2WFQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52HC8V2WFQ-7.pdf
- Description:
- DIODE ZENER 8.2V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:7,728
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Product details
Overview
BZT52HC8V2WFQ from Diodes Incorporated is an AEC-Q101 qualified surface-mount Zener diode with nominal zener voltage 8.2 V, ±6.1% tolerance (7.7–8.7 V), 10 Ω maximum zener impedance at 5 mA test current, 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 BZT52HC8V2WFQ datasheet, BZT52HC8V2WFQ pinout, BZT52HC8V2WFQ application, or BZT52HC8V2WFQ equivalent, key selection factors include its SOD123F package thermal performance (RθJA = 330 °C/W), low 0.7 µA max reverse leakage at 5 V, and +3.2 to +6.2 mV/°C temperature coefficient for stable regulation across -65°C to +150°C ambient.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage under varying load and temperature conditions. Its 5 mA zener test current and 10 Ω dynamic impedance ensure predictable regulation behavior in feedback paths and sensing nodes.
The device uses a planar epitaxial construction with cathode band polarity marking and matte tin–annealed copper alloy terminals. Its SOD123F package supports high power density via optimized thermal pad layout, enabling reliable operation up to 830 mW when mounted on 1 cm² cathode pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.7–8.7 V at IZT = 5 mA - defines regulated output range for voltage reference design |
| Zener Impedance (ZZT) | ≤10 Ω at IZT = 5 mA - ensures minimal output voltage deviation under load transients |
| Reverse Leakage (IR) | ≤0.7 µA at VR = 5 V - enables low-power standby regulation without excessive quiescent drain |
| Power Dissipation (PD) | 375 mW on FR-4 (min pad) - sets maximum continuous power handling in standard PCB layouts |
| Temp. Coefficient (TC) | +3.2 to +6.2 mV/°C at IZT = 5 mA - quantifies voltage drift per degree for thermal stability analysis |
| Capacitance (CT) | ≤150 pF at f = 1 MHz, VR = 0 V - limits high-frequency noise coupling in signal-path references |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - determines conduction loss if used in forward-biased protection schemes |
Pinout & Package
Package: SOD123F - flat lead, low-profile surface-mount package with molded green plastic body (UL 94V-0), cathode band marking, and matte tin–annealed copper alloy terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower potential node in Zener regulation | Must be held ≤ (VZ – 0.9 V) below cathode to avoid forward conduction during regulation |
| Cathode | Current exit terminal in forward bias; connected to higher potential node in Zener regulation | Marked by band; ties to regulated output node; requires thermal pad for >375 mW operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics requiring change control and PPAP documentation |
| SOD123F thermal design | Enables 830 mW dissipation with 1 cm² cathode pad - 122% higher than standard FR-4 layout limit |
| Halogen- and antimony-free | Meets <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - compliant with EU "Green" material directives |
| Low reverse leakage | 0.7 µA max at 5 V reverse bias - preserves battery life in always-on vehicle subsystems |
| Stable tempco | +3.2 to +6.2 mV/°C - allows predictable compensation in wide-temperature-range sensor interfaces |
Applications
| Automotive Power Rail Monitor | Industrial Sensor Reference |
|---|---|
Use Scenario: Monitoring 12 V battery supply in engine control units to detect undervoltage or overvoltage faults. IC Role / Device Role / Timing Role: Zener clamping element in comparator input divider network. Use Value: Tight 7.7–8.7 V tolerance and low TC enable accurate threshold detection across -40°C to +125°C junction temperature. |
Use Scenario: Providing stable 8.2 V reference for analog-to-digital conversion of pressure or temperature signals. IC Role / Device Role / Timing Role: Precision shunt reference in ratiometric sensor excitation circuit. Use Value: 10 Ω ZZT minimizes code shift under varying load, while 150 pF capacitance avoids aliasing in 100 kHz sampling systems. |
| USB-C Port Protection | LED Driver Feedback Clamp |
Use Scenario: Clamping transient surges on USB-C VBUS line during hot-plug events in automotive infotainment systems. IC Role / Device Role / Timing Role: Overvoltage suppression device placed between VBUS and ground. Use Value: 375 mW rating handles 100 ns/1 kV ESD pulses per IEC 61000-4-2 Level 4 when combined with series impedance. |
Use Scenario: Limiting feedback voltage in constant-current LED driver ICs to prevent overcurrent during dimming transitions. IC Role / Device Role / Timing Role: Shunt regulator in op-amp feedback loop controlling LED string current. Use Value: Low 0.7 µA leakage prevents false triggering at low dimming levels; cathode-band polarity ensures correct loop connection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5231B-TP (Micro Commercial) | Zener voltage 5.1 V (fixed), 10 Ω ZZT, SOD-123 package, no AEC-Q101 qualification | Not suitable for automotive use; limited to industrial/commercial power rails | Select only for cost-sensitive non-automotive designs where 5.1 V reference suffices |
| BZX84-C8V2 (Nexperia) | 8.2 V nominal, ±5% tolerance, 15 Ω ZZT, SOT-23 package, AEC-Q101 qualified | Higher dynamic impedance reduces regulation accuracy under load variation | Prefer when board space constraints require SOT-23 footprint and 15 Ω ZZT is acceptable |
Compared with MMSZ5231B-TP and BZX84-C8V2, BZT52HC8V2WFQ delivers tighter voltage tolerance (±6.1% vs ±10% and ±5%), lower ZZT (10 Ω vs 10 Ω and 15 Ω), and verified automotive qualification - making it optimal for safety-critical voltage supervision where thermal stability and traceability matter.
Availability
BZT52HC8V2WFQ is available at Aetrix Electronics and suitable for automotive power monitoring, industrial sensor reference, USB-C surge protection, and LED driver feedback clamping requiring stable component supply and full AEC-Q101 compliance.
Supply support for BZT52HC8V2WFQ 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 across Asia, Europe, and North America.
BZT52HC8V2WFQ belongs to the BZT52HCxxWFQ automotive Zener series, engineered specifically for high-reliability voltage reference and clamping in harsh-environment automotive electronics, including ADAS, powertrain, and body control modules.
FAQ
What is the maximum reverse voltage this Zener can withstand before breakdown?
The BZT52HC8V2WFQ has a nominal zener voltage of 8.2 V with a guaranteed range of 7.7 V to 8.7 V at 5 mA test current. Breakdown occurs within this range under controlled DC conditions; operation above 8.7 V risks exceeding power limits unless current is strictly limited by external series resistance.
Is this part suitable for use in a 24 V automotive system?
Yes - the device's 8.2 V zener voltage makes it appropriate for deriving stable reference voltages from 24 V rails using resistive dividers. Its AEC-Q101 qualification, -65°C to +150°C operating range, and 830 mW thermal capability with proper PCB layout confirm suitability for under-hood and chassis-mounted 24 V applications.
How does the SOD123F package compare thermally to standard SOD-123?
The SOD123F features a flatter leadframe profile and optimized internal thermal path, achieving RθJA = 150 °C/W with 1 cm² cathode pad versus 330 °C/W on minimal FR-4 pads. This 54% thermal resistance reduction enables higher sustained power dissipation without derating in compact automotive PCBs.
Can this Zener be used in place of a TVS diode for ESD protection?
No - while it clamps above 8.2 V, its 375 mW power rating and slow response time make it unsuitable for IEC 61000-4-2 ESD transients. It lacks the low clamping voltage, high peak pulse power, and fast turn-on required of TVS devices; use dedicated automotive-grade TVS diodes like DZ23C8V2 for such roles.
BZT52HC8V2WFQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 8.2 V
- Tolerance:
- ±6.04%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 700 nA @ 5 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
BZT52HC8V2WFQ-7 FAQ
1.How can I place an order for BZT52HC8V2WFQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52HC8V2WFQ-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 BZT52HC8V2WFQ-7 reliable?
The price and inventory of BZT52HC8V2WFQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52HC8V2WFQ-7 is usually 5 days.
3.What payment methods are accepted for BZT52HC8V2WFQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52HC8V2WFQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52HC8V2WFQ-7?
BZT52HC8V2WFQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52HC8V2WFQ-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 BZT52HC8V2WFQ-7?
For technical support, including BZT52HC8V2WFQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52HC8V2WFQ-7 requirements.
6.How does Aetrix verify that BZT52HC8V2WFQ-7 is sourced from the original manufacturer or authorized distributors?
All BZT52HC8V2WFQ-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 BZT52HC8V2WFQ-7 meets industry standards.
7.What is the process for return or replacement of BZT52HC8V2WFQ-7?
All BZT52HC8V2WFQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52HC8V2WFQ-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 BZT52HC8V2WFQ-7 part is unused and in its original packaging.
Return procedure for BZT52HC8V2WFQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52HC8V2WFQ-7 Tags
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