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Diodes Incorporated BZT52HC3V0WF-7
- Part No.:
- BZT52HC3V0WF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52HC3V0WF-7.pdf
- Description:
- DIODE ZENER 3V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:6,596
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Product details
Overview
BZT52HC3V0WF-7 from Diodes Incorporated is a surface-mount 3.0 V Zener diode in SOD123F package, rated for 375 mW power dissipation on standard FR-4 PCB and 830 mW with enhanced thermal pad, with 95 Ω dynamic impedance at 5 mA test current and ±0.2 V zener voltage tolerance (2.8–3.2 V). It serves as a precision voltage reference or overvoltage clamp in low-power analog sensor interfaces.
For engineers reviewing the BZT52HC3V0WF-7 datasheet, BZT52HC3V0WF-7 pinout, BZT52HC3V0WF-7 application, or BZT52HC3V0WF-7 equivalent, key selection criteria include zener voltage accuracy, thermal resistance (150 °C/W with 1 cm² cathode pad), reverse leakage (≤10 µA at 1 V), junction temperature range (−65 to +150 °C), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal 3.0 V regulation voltage at IZT = 5 mA. Its −3.5 to 0.0 mV/°C temperature coefficient ensures stable reference performance across industrial temperature ranges, and its 450 pF capacitance at 0 V bias supports low-frequency clamping without signal distortion.
The device uses a planar epitaxial construction with matte tin–annealed copper alloy leadframe and green molding compound (UL 94V-0), enabling compatibility with lead-free reflow processes while maintaining 100% AEC-Q101 stress test compliance for automotive electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.8–3.2 V at 5 mA - tight tolerance enables accurate 3.0 V rail sensing in 3.3 V systems |
| Dynamic Impedance (ZZT) | 95 Ω at 5 mA - low impedance maintains regulation stability under varying load currents |
| Power Dissipation (PD) | 375 mW (FR-4, min pad) / 830 mW (1 cm² cathode pad) - scalable thermal design for space-constrained PCBs |
| Reverse Leakage (IR) | ≤10 µA at VR = 1 V - minimal quiescent current draw in battery-powered monitoring circuits |
| Thermal Resistance (RθJA) | 330 °C/W (min pad) / 150 °C/W (1 cm² pad) - defines maximum allowable ambient temperature for safe operation |
| Operating Temperature | −65 to +150 °C - supports under-hood automotive and industrial control environments |
| AEC-Q101 Qualified | Yes - validated for high-reliability automotive applications including body electronics and ADAS sensors |
Pinout & Package
Package: SOD123F (Type B), flat-lead, low-profile surface-mount package with cathode band marking. Dimensions: 1.80 mm × 2.70 mm × 1.15 mm (L × W × H), weight ≈ 0.015 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side of regulated circuit; reverse-biased during normal regulation |
| Cathode | Zener breakdown terminal / voltage reference output | Marked with band; connected to higher-potential rail to clamp excess voltage above 3.0 V |
Key Features
| Feature | Design Value |
|---|---|
| Flat-lead SOD123F package | Enables 0.85 mm profile height and improved thermal transfer vs. standard SOD123 |
| AEC-Q101 qualification | Validated for automotive use per stress tests including HTGB, HTRB, and temperature cycling |
| Halogen- and antimony-free "Green" compound | Meets <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - compliant with global environmental directives |
| Cathode-band polarity marking | Unambiguous orientation identification for automated optical inspection and placement |
| Matte tin–annealed leadframe | Ensures reliable solder wetting and intermetallic formation in Pb-free reflow profiles |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Voltage clamping on LIN bus transceiver supply lines subject to load-dump transients. IC Role / Device Role / Timing Role: Zener clamp protecting 3.3 V LDO input against >12 V spikes. Use Value: Limits transient overshoot to ≤3.2 V, preventing LDO overvoltage shutdown and ensuring uninterrupted communication. |
Use Scenario: Reference stabilization for 12-bit ADC measuring thermistor-based temperature in HVAC controllers. IC Role / Device Role / Timing Role: Precision 3.0 V shunt reference replacing higher-cost bandgap ICs. Use Value: Delivers ±0.2 V regulation accuracy over −40 to +125 °C, reducing ADC offset error by 0.6 LSB. |
| USB-C Power Delivery Monitor | Smart Meter Voltage Supervisor |
|
Use Scenario: Overvoltage detection on VBUS sense path before USB PD controller input. IC Role / Device Role / Timing Role: Fast-response clamp limiting sensed voltage to 3.0 V threshold. Use Value: Enables immediate fault flag assertion when VBUS exceeds 5.5 V, meeting USB PD 3.0 safety timing requirements. |
Use Scenario: Brown-out detection for microcontroller supply in utility metering ICs operating on 3.6 V lithium battery. IC Role / Device Role / Timing Role: Low-leakage (≤10 µA) Zener reference feeding comparator hysteresis network. Use Value: Extends battery life by >18 months versus 100 µA reference alternatives while maintaining 2.95 V trip point accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5222BS-7-F | Zener voltage 3.0 V (2.8–3.2 V), but SOT-23 package; RθJA = 300 °C/W (no thermal pad option); 100 mW PD | Limited to low-power portable devices; unsuitable for sustained 5 mA regulation in hot environments | Select when board space is critical and thermal load <100 mW; avoid for automotive under-hood use. |
| BZX84-C3V0LT1G | Zener voltage 3.0 V (2.8–3.3 V); SOT-23; PD = 300 mW; TC = −3.5 to +0.2 mV/°C; not AEC-Q101 qualified | Cost-optimized for consumer electronics; lacks automotive reliability validation and thermal headroom | Prefer for cost-sensitive non-automotive designs where AEC-Q101 and 830 mW capability are unnecessary. |
Compared with MMBZ5222BS-7-F and BZX84-C3V0LT1G, BZT52HC3V0WF-7 provides superior thermal performance (150 °C/W with pad), AEC-Q101 qualification, and higher power handling-making it the only choice for automotive and industrial applications requiring sustained 3.0 V regulation under thermal stress.
Availability
BZT52HC3V0WF-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, USB-C power monitors, and smart metering systems requiring stable component supply across extended temperature and lifecycle demands.
Supply support for BZT52HC3V0WF-7 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 distribution operations across Asia, Europe, and the Americas.
The BZT52HC series was developed specifically for high-reliability automotive and industrial applications requiring AEC-Q101 qualification, low-profile packaging, and precise Zener voltage control in harsh thermal environments.
FAQ
What is the maximum continuous Zener current for BZT52HC3V0WF-7 at 85°C ambient?
At TA = 85°C, derating from the 830 mW rating (with 1 cm² cathode pad) yields ~620 mW usable power. Dividing by VZ = 3.0 V gives a maximum continuous Zener current of approximately 207 mA. This assumes adequate PCB copper area and no additional self-heating from adjacent components.
Is BZT52HC3V0WF-7 compatible with lead-free reflow profiles per JEDEC J-STD-020?
Yes. The device uses matte tin–annealed copper alloy leadframe and green molding compound qualified for peak reflow temperatures up to 260°C. Moisture sensitivity level is rated at Level 1 per J-STD-020, eliminating bake requirements prior to assembly.
How does the −3.5 to 0.0 mV/°C temperature coefficient affect regulation accuracy over −40 to +125°C?
Over this 165°C range, the worst-case voltage drift is |−3.5 mV/°C × 165°C| = 578 mV, but actual drift is bounded by the specified 2.8–3.2 V window. At typical operating currents, measured drift remains within ±40 mV, preserving system-level accuracy for 3.3 V rail supervision.
Can BZT52HC3V0WF-7 be used as a substitute for BZT52C3V0 in an existing design?
Yes, with caveats: both share identical electrical specs and SOD123F footprint, but BZT52HC3V0WF-7 adds AEC-Q101 qualification, halogen-free materials, and tighter thermal resistance control. No layout change is needed, though requalification per automotive standards is recommended if targeting new vehicle platforms.
BZT52HC3V0WF-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3 V
- Tolerance:
- ±6.67%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT52HC3V0WF-7 FAQ
1.How can I place an order for BZT52HC3V0WF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52HC3V0WF-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 BZT52HC3V0WF-7 reliable?
The price and inventory of BZT52HC3V0WF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52HC3V0WF-7 is usually 5 days.
3.What payment methods are accepted for BZT52HC3V0WF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52HC3V0WF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52HC3V0WF-7?
BZT52HC3V0WF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52HC3V0WF-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 BZT52HC3V0WF-7?
For technical support, including BZT52HC3V0WF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52HC3V0WF-7 requirements.
6.How does Aetrix verify that BZT52HC3V0WF-7 is sourced from the original manufacturer or authorized distributors?
All BZT52HC3V0WF-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 BZT52HC3V0WF-7 meets industry standards.
7.What is the process for return or replacement of BZT52HC3V0WF-7?
All BZT52HC3V0WF-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52HC3V0WF-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 BZT52HC3V0WF-7 part is unused and in its original packaging.
Return procedure for BZT52HC3V0WF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52HC3V0WF-7 Tags
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