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Diodes Incorporated BZT52HC7V5WFQ-7
- Part No.:
- BZT52HC7V5WFQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52HC7V5WFQ-7.pdf
- Description:
- DIODE ZENER 7.5V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:8,038
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Product details
Overview
BZT52HC7V5WFQ from Diodes Incorporated is a surface-mount Zener diode with nominal zener voltage 7.5 V, 5 mA test current, 10 Ω maximum zener impedance at 5 mA, ±2.5 to +5.3 mV/°C temperature coefficient, and 150 pF capacitance at 1 MHz. It delivers precise voltage regulation in low-power analog monitoring and automotive sensor biasing circuits.
For engineers reviewing the BZT52HC7V5WFQ datasheet, BZT52HC7V5WFQ pinout, BZT52HC7V5WFQ application, or BZT52HC7V5WFQ equivalent, this AEC-Q101 qualified device supports automotive-grade reliability, thermal stability up to +150°C, and low-profile SOD123F packaging for space-constrained PCB layouts.
Technical Context
This Zener diode operates as a two-terminal voltage reference element, maintaining stable reverse-biased breakdown across its cathode–anode terminals. Its 7.0–7.9 V zener voltage range at 5 mA ensures tight tolerance for precision clamping and reference generation in 8–12 V rail systems.
The device exhibits a positive temperature coefficient (+2.5 to +5.3 mV/°C), enabling predictable drift compensation in temperature-sensitive analog front-ends. With 150 pF junction capacitance at 0 V reverse bias, it supports moderate-frequency signal conditioning without excessive loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.0–7.9 V at IZT = 5 mA - defines stable regulation window for 8 V system references |
| Zener Impedance (ZZT) | 10 Ω max at 5 mA - ensures minimal output voltage variation under load transients |
| Temperature Coefficient | +2.5 to +5.3 mV/°C - enables predictable drift tracking for compensated bias networks |
| Junction Capacitance | 150 pF at f = 1 MHz, VR = 0 V - limits high-frequency noise coupling in sensor interfaces |
| Power Dissipation | 830 mW on 1 cm² cathode pad - supports sustained operation in thermally constrained automotive modules |
| Reverse Leakage Current | 1 µA max at VR = 5 V - guarantees low quiescent power in always-on monitoring circuits |
| Forward Voltage | 0.9 V at IF = 10 mA - allows efficient forward conduction during transient overvoltage events |
Pinout & Package
Package: SOD123F - flat-lead, low-profile surface-mount package with molded green plastic body (UL 94V-0), cathode band polarity 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 mode | Provides path for forward conduction during surge events; referenced to ground or common return |
| Cathode | Current exit terminal in forward bias; higher-potential node in Zener regulation mode | Connected to regulated voltage rail; requires thermal pad (1 cm²) for 830 mW dissipation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and body electronics |
| SOD123F low-profile package | Height ≤ 0.9 mm enables placement under connectors or near fine-pitch ICs |
| Halogen- and antimony-free "Green" compound | <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - meets global environmental compliance mandates |
| IATF 16949 certified manufacturing | Ensures consistent lot-to-lot parametric stability and PPAP documentation support |
Applications
| Automotive Cabin Temperature Sensor | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Stabilizes bias voltage for NTC thermistor measurement circuit in HVAC control module. IC Role / Device Role / Timing Role: Zener reference element providing 7.5 V rail for ADC reference and op-amp biasing. Use Value: Tight 7.0–7.9 V tolerance and +2.5 mV/°C TC enable direct temperature drift compensation in firmware. |
Use Scenario: Clamps transient overvoltage on 4–20 mA current loop input before signal conditioning amplifier. IC Role / Device Role / Timing Role: Reverse-biased voltage clamp limiting input to 7.9 V during ESD or inductive kick events. Use Value: 10 Ω ZZT ensures clamp voltage stays within amplifier's absolute maximum rating during 1 kV ESD pulses. |
| USB-C Power Delivery Monitor | Medical Patient Monitor Front-End |
Use Scenario: Regulates auxiliary 7.5 V supply for PD controller logic and level-shifting circuitry. IC Role / Device Role / Timing Role: Low-power voltage reference supplying stable bias to USB-PD policy engine and communication PHY. Use Value: 1 µA leakage at 5 V ensures <1 µW standby loss-critical for battery-backed PD negotiation states. |
Use Scenario: Provides calibrated reference for ECG electrode offset cancellation amplifier. IC Role / Device Role / Timing Role: Precision DC reference source for chopper-stabilized instrumentation amplifier stage. Use Value: 150 pF capacitance avoids phase shift in 10 kHz biopotential signal path while maintaining 7.5 V accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C7V5 | Higher ZZT (30 Ω), wider VZ tolerance (6.8–8.2 V), SOT-23 package | Less stable regulation under dynamic load; larger footprint reduces board density | Select when cost sensitivity outweighs thermal performance and space constraints |
| MMSZ5235B | Lower power rating (500 mW), higher leakage (5 µA at 5 V), same SOD-123 package | Inadequate for sustained 830 mW dissipation in automotive under-hood environments | Prefer only for non-automotive consumer applications with ambient <85°C |
Compared with BZX84-C7V5 and MMSZ5235B, BZT52HC7V5WFQ offers superior thermal capability (830 mW), tighter regulation (10 Ω ZZT), and AEC-Q101 validation-making it the sole choice for automotive and industrial designs requiring long-term reliability at elevated temperatures.
Availability
BZT52HC7V5WFQ is available at Aetrix Electronics and suitable for automotive cabin control, industrial analog I/O protection, and medical sensor biasing requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for BZT52HC7V5WFQ 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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal devices, with operations certified to IATF 16949 and ISO 9001 standards.
The BZT52HC series belongs to Diodes' AEC-Q101 qualified Zener diode product line, engineered specifically for automotive and industrial applications demanding high reliability, low-profile packaging, and stringent environmental compliance.
FAQ
What is the maximum continuous power dissipation for BZT52HC7V5WFQ on a standard FR-4 PCB?
The device supports 830 mW continuous power dissipation when mounted on FR-4 with a 1 cm² cathode thermal pad, per Note 7 in the datasheet. Without the extended pad, derating applies-maximum is 375 mW using minimum recommended pad layout (Note 6). Thermal resistance drops from 330 °C/W to 150 °C/W with the larger pad, directly enabling higher sustained power handling.
How does the temperature coefficient affect regulation accuracy over automotive temperature range?
With a +2.5 to +5.3 mV/°C coefficient, BZT52HC7V5WFQ exhibits predictable positive drift: at +125°C (ΔT = +150°C from 25°C), VZ increases by 375–795 mV-within its 7.0–7.9 V initial tolerance band. This behavior allows firmware-based compensation in closed-loop sensor systems, unlike negative-coefficient Zeners that require different correction strategies.
Is BZT52HC7V5WFQ suitable for ESD protection in USB 2.0 data lines?
No-it is not optimized for high-speed ESD clamping. With 150 pF junction capacitance and 10 Ω dynamic impedance, it would distort 480 Mbps USB 2.0 signals. Dedicated TVS diodes like D3V3M1U2SOT-7A (0.3 pF, 0.5 Ω) are required for data-line protection; BZT52HC7V5WFQ is intended for DC biasing and low-frequency voltage regulation only.
What marking code identifies BZT52HC7V5WFQ on the device body?
The top-side marking is "WC", per the Electrical Characteristics table in DS41143 Rev. 4-2. This two-character code uniquely identifies the 7.0–7.9 V variant within the BZT52HC5V6WFQ–BZT52HC30WFQ family and appears adjacent to the cathode band on the SOD123F package.
BZT52HC7V5WFQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±6%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 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
BZT52HC7V5WFQ-7 FAQ
1.How can I place an order for BZT52HC7V5WFQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52HC7V5WFQ-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 BZT52HC7V5WFQ-7 reliable?
The price and inventory of BZT52HC7V5WFQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52HC7V5WFQ-7 is usually 5 days.
3.What payment methods are accepted for BZT52HC7V5WFQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52HC7V5WFQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52HC7V5WFQ-7?
BZT52HC7V5WFQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52HC7V5WFQ-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 BZT52HC7V5WFQ-7?
For technical support, including BZT52HC7V5WFQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52HC7V5WFQ-7 requirements.
6.How does Aetrix verify that BZT52HC7V5WFQ-7 is sourced from the original manufacturer or authorized distributors?
All BZT52HC7V5WFQ-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 BZT52HC7V5WFQ-7 meets industry standards.
7.What is the process for return or replacement of BZT52HC7V5WFQ-7?
All BZT52HC7V5WFQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52HC7V5WFQ-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 BZT52HC7V5WFQ-7 part is unused and in its original packaging.
Return procedure for BZT52HC7V5WFQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52HC7V5WFQ-7 Tags
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Diodes Incorporated
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