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Diodes Incorporated BZT52HC9V1WF-7
- Part No.:
- BZT52HC9V1WF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52HC9V1WF-7.pdf
- Description:
- DIODE ZENER 9.1V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:5,660
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Product details
Overview
BZT52HC9V1WF-7 from Diodes Incorporated is a surface-mount Zener diode with nominal 9.1 V zener voltage, 5 mA test current, and 10 Ω maximum zener impedance at IZT, designed for precision voltage regulation and overvoltage protection in low-power analog and power-supply feedback circuits.
For engineers reviewing the BZT52HC9V1WF-7 datasheet, BZT52HC9V1WF-7 pinout, BZT52HC9V1WF-7 application, or BZT52HC9V1WF-7 equivalent, key selection criteria include its ±5.5% zener voltage tolerance (8.5–9.6 V), +3.8 to +7.0 mV/°C positive temperature coefficient, 150 pF capacitance at 0 V, 0.5 µA max reverse leakage at 7.2 V, and SOD123F package thermal performance under PCB pad variations.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified 9.1 V nominal regulation point at 5 mA test current, exhibiting a monotonic positive temperature coefficient (+3.8 to +7.0 mV/°C) that enables stable reference behavior across −65°C to +150°C operating range. Its 10 Ω dynamic impedance at IZT ensures tight regulation under small-signal load variations.
The device uses a planar-diffused silicon junction in a flat-lead SOD123F (Type B) package, optimized for low profile (max height 1.15 mm) and enhanced thermal dissipation-delivering 830 mW power rating when mounted on 1 cm² cathode pad, versus 375 mW on standard FR-4 layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.5–9.6 V at 5 mA - defines regulation window for 9.1 V nominal reference applications |
| Zener Impedance (ZZT) | 10 Ω max at 5 mA - ensures minimal output voltage shift under load transients |
| Reverse Leakage (IR) | 0.5 µA max at 7.2 V - guarantees low quiescent current in standby or sensing paths |
| Temperature Coefficient (TC) | +3.8 to +7.0 mV/°C - supports predictable drift compensation in temperature-critical references |
| Capacitance (CT) | 150 pF max at 1 MHz, 0 V - limits high-frequency noise coupling in signal-path clamping |
| Power Dissipation (PD) | 830 mW with 1 cm² cathode pad - enables higher continuous current in thermally optimized layouts |
| Package | SOD123F (Type B) - 1.80 mm × 2.70 mm footprint with 0.35–0.85 mm lead length for automated assembly |
Pinout & Package
SOD123F (Type B) is a surface-mount, flat-lead plastic package with cathode band marking on top surface. The device has two terminals: anode and cathode, with polarity indicated by a visible cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node in shunt regulator configuration | Connected to system ground or lowest potential point; forms return path for zener current |
| Cathode | Regulated output node in shunt regulator configuration | Connected to input rail or feedback node; maintains stable voltage relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD123F package | Max height 1.15 mm - enables use in space-constrained consumer and automotive modules |
| AEC-Q101 qualified | Qualified for automotive-grade reliability - supports deployment in infotainment power rails and sensor interfaces |
| Halogen- and antimony-free "Green" compound | <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - meets global environmental compliance mandates without performance trade-offs |
| Matte tin annealed terminals | Solderable per MIL-STD-202, Method 208 - ensures robust reflow joint integrity in high-volume manufacturing |
Applications
| USB Power Protection | Automotive Sensor Reference |
|---|---|
|
Use Scenario: Clamp transient surges on 5 V USB VBUS lines during hot-plug events or ESD discharge. IC Role / Device Role / Timing Role: Shunt clamping element placed between VBUS and GND to limit peak voltage to ≤10.6 V. Use Value: Leverages 9.1 V nominal zener voltage and 0.5 µA leakage to avoid loading idle bus while responding within nanoseconds to 8/20 µs transients. |
Use Scenario: Provide stable 9.1 V reference for analog front-end of engine coolant temperature sensors. IC Role / Device Role / Timing Role: Precision voltage reference source feeding ADC bias network in 12 V automotive subsystems. Use Value: Uses +3.8 to +7.0 mV/°C TC and AEC-Q101 qualification to maintain <±1% error across −40°C to +125°C ambient. |
| Industrial PLC Input Conditioning | IoT Node Voltage Supervisor |
|
Use Scenario: Regulate 24 V DC input down to 9.1 V for isolated logic-level translation in programmable logic controller inputs. IC Role / Device Role / Timing Role: Passive shunt regulator in series with current-limiting resistor to generate local bias rail. Use Value: Delivers 830 mW dissipation capability with 1 cm² pad, enabling reliable operation under sustained 24 V overvoltage conditions. |
Use Scenario: Monitor battery voltage in BLE-enabled asset trackers using comparator threshold set by zener reference. IC Role / Device Role / Timing Role: Low-leakage voltage reference for reset supervisor circuit triggering at 8.5 V undervoltage threshold. Use Value: 0.5 µA max reverse leakage at 7.2 V extends shelf life and runtime in coin-cell-powered devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5240BS-7-F | 8.7–9.3 V range at 20 mA; 15 Ω ZZT; SOT-23 package | Higher test current shifts regulation point; smaller package reduces thermal mass | Prefer for higher-current bias networks where SOT-23 footprint is constrained |
| BZX84-C9V1 | 8.6–9.6 V at 5 mA; 15 Ω ZZT; SOT-23 package; no AEC-Q101 qualification | Lacks automotive qualification; slightly higher impedance degrades regulation accuracy | Select only for cost-sensitive industrial applications without automotive reliability requirements |
Compared with MMBZ5240BS-7-F and BZX84-C9V1, BZT52HC9V1WF-7 offers superior thermal performance via SOD123F's larger pad area, tighter impedance control, and guaranteed AEC-Q101 compliance-making it optimal for automotive and high-stability reference designs.
Availability
BZT52HC9V1WF-7 is available at Aetrix Electronics and suitable for USB power protection, automotive sensor reference, industrial PLC input conditioning, and IoT node voltage supervision requiring stable component supply and long-term lifecycle support.
Supply support for BZT52HC9V1WF-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, specializing in high-reliability components for automotive, industrial, and consumer markets with ISO/TS 16949 and ISO 14001 certifications.
The BZT52HC series belongs to Diodes' AEC-Q101-qualified Zener diode product line, engineered specifically for precision voltage regulation and transient suppression in harsh-environment applications demanding consistent parametric stability and long-term reliability.
FAQ
What is the maximum power dissipation for BZT52HC9V1WF-7 under standard PCB conditions?
The device delivers 375 mW power dissipation when mounted on an FR-4 PCB using Diodes Incorporated's minimum recommended pad layout. This rating assumes natural convection cooling and accounts for thermal resistance of 330 °C/W from junction to ambient air under those conditions.
Does BZT52HC9V1WF-7 support automotive applications?
Yes-BZT52HC9V1WF-7 is explicitly qualified to AEC-Q101 standards, including stress testing for temperature cycling, humidity bias, and mechanical shock. Its −65°C to +150°C operating range and halogen-free construction meet Tier-1 automotive supplier requirements.
How does the temperature coefficient affect regulation accuracy over temperature?
With a +3.8 to +7.0 mV/°C temperature coefficient, the zener voltage increases linearly with junction temperature. At 100°C above room temperature, VZ rises by approximately 0.38–0.70 V-enabling predictable calibration offset correction in reference designs.
Can BZT52HC9V1WF-7 be used in place of older BZT52C9V1 variants?
No-BZT52HC9V1WF-7 uses a different die structure and tighter tolerances than legacy BZT52C9V1. It features lower ZZT (10 Ω vs. typically 20–30 Ω), improved TC consistency, and AEC-Q101 qualification, making it unsuitable as a drop-in replacement without circuit validation.
BZT52HC9V1WF-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):
- 9.1 V
- Tolerance:
- ±5.49%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 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
BZT52HC9V1WF-7 FAQ
1.How can I place an order for BZT52HC9V1WF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52HC9V1WF-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 BZT52HC9V1WF-7 reliable?
The price and inventory of BZT52HC9V1WF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52HC9V1WF-7 is usually 5 days.
3.What payment methods are accepted for BZT52HC9V1WF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52HC9V1WF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52HC9V1WF-7?
BZT52HC9V1WF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52HC9V1WF-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 BZT52HC9V1WF-7?
For technical support, including BZT52HC9V1WF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52HC9V1WF-7 requirements.
6.How does Aetrix verify that BZT52HC9V1WF-7 is sourced from the original manufacturer or authorized distributors?
All BZT52HC9V1WF-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 BZT52HC9V1WF-7 meets industry standards.
7.What is the process for return or replacement of BZT52HC9V1WF-7?
All BZT52HC9V1WF-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52HC9V1WF-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 BZT52HC9V1WF-7 part is unused and in its original packaging.
Return procedure for BZT52HC9V1WF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52HC9V1WF-7 Tags
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