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Diodes Incorporated BZT52C4V7Q-7-F
- Part No.:
- BZT52C4V7Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C4V7Q-7-F.pdf
- Description:
- DIODE ZENER 4.7V 370MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:3,990
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Product details
Overview
BZT52C4V7Q-7-F from Diodes Incorporated is an automotive-grade surface-mount Zener diode with a nominal zener voltage of 4.7 V, ±5% tolerance (4.4–5.0 V), 500 mW power dissipation at TL = +75°C, and 80 Ω maximum zener impedance at 5 mA test current - used for precision voltage regulation and overvoltage protection in automotive body control modules.
For engineers reviewing the BZT52C4V7Q-7-F datasheet, BZT52C4V7Q-7-F pinout, BZT52C4V7Q-7-F application, or BZT52C4V7Q-7-F equivalent, key selection criteria include zener voltage accuracy, thermal resistance (RθJL = 150 °C/W), AEC-Q101 qualification, SOD123 package compatibility, and reverse leakage (3.0 µA @ 2.0 V) in low-power biasing circuits.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and temperature conditions. Its planar die construction ensures consistent breakdown characteristics, while the SOD123 package supports automated placement and provides RθJA = 338 °C/W on FR-4 PCBs.
It delivers 4.7 V regulation at 5 mA test current with ±5% tolerance, exhibits a negative temperature coefficient of –3.5 mV/°C, and maintains low dynamic impedance (80 Ω) - enabling accurate voltage clamping in sensor bias networks and ECU power-rail supervision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.7 V nominal, 4.4–5.0 V range at 5 mA - defines precise clamping threshold for 5 V rail protection |
| Power Dissipation | 500 mW @ TL = +75°C - supports sustained operation in engine bay ambient conditions |
| Zener Impedance | 80 Ω max @ 1 kHz, 5 mA - ensures minimal voltage deviation under dynamic load transients |
| Reverse Leakage | 3.0 µA max @ VR = 2.0 V - enables low-current biasing without parasitic loading in sensor interfaces |
| Temperature Coefficient | –3.5 mV/°C - allows predictable drift compensation in automotive temperature ranges (–40 to +125°C) |
| AEC-Q101 Qualified | Yes - certified for automotive electronics per stress test requirements including HTOL, TC, and HAST |
Pinout & Package
Package: SOD123 - surface-mount plastic case with cathode band marking, 0.010 g weight, UL 94V-0 flammability rating, and matte tin-plated alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node during reverse-bias regulation |
| Cathode | Zener breakdown terminal / voltage reference output | Connected to regulated node; cathode band identifies this terminal visually and in layout |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q101 compliant - validated for high-reliability use in engine control units and ADAS sensors |
| Green packaging | Halogen- and antimony-free molding compound (<900 ppm Br+Cl, <1000 ppm Sb) - meets automotive environmental mandates |
| Thermal performance | RθJL = 150 °C/W - enables efficient heat transfer to PCB copper pads in space-constrained modules |
| Manufacturing compatibility | SOD123 footprint optimized for pick-and-place and reflow soldering - supports high-yield automated assembly |
Applications
| Automotive Sensor Biasing | ECU Power-Rail Clamping |
|---|---|
Use Scenario: Providing stable 4.7 V reference to analog sensor front-ends (e.g., pressure, temperature) in body control modules. IC Role / Device Role / Timing Role: Precision voltage reference source for ADC input conditioning and op-amp biasing. Use Value: Tight 4.4–5.0 V tolerance and low 3.0 µA leakage ensure minimal sensor offset error and signal integrity across –40 to +125°C. |
Use Scenario: Clamping transient spikes on 5 V microcontroller supply rails in infotainment head units. IC Role / Device Role / Timing Role: Overvoltage protection device shunting surge energy to ground during load-dump events. Use Value: 500 mW power rating and 80 Ω zener impedance enable fast, repeatable clamping without thermal runaway. |
| LED Current Regulation | Industrial I/O Protection |
Use Scenario: Setting constant current for indicator LEDs in dashboard displays using series resistor + Zener configuration. IC Role / Device Role / Timing Role: Voltage reference element defining LED forward voltage ceiling in linear current-limiting topology. Use Value: Stable 4.7 V breakdown with –3.5 mV/°C TC minimizes brightness drift over operating temperature range. |
Use Scenario: Protecting 4.8–5.2 V logic inputs on PLC digital I/O cards from ESD and inductive kickback. IC Role / Device Role / Timing Role: Low-capacitance (≈30 pF) transient suppressor placed directly at connector interface. Use Value: Sub-µA leakage and SOD123 footprint allow integration adjacent to high-speed signal traces without signal degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ4700T1G | Zener voltage 4.7 V ±5%, but rated 500 mW @ TA = +25°C only; RθJA = 375 °C/W - less robust at elevated ambient | Not AEC-Q101 qualified; suitable for commercial-grade consumer products only | Select when cost sensitivity outweighs automotive reliability requirements |
| BZX84-C4V7 | Same 4.7 V rating, but SOT-23 package; higher RθJA = 300 °C/W and no AEC-Q101 certification | Larger footprint and lower thermal efficiency limit use in dense automotive PCB layouts | Prefer only if existing SOT-23 land pattern prohibits SOD123 redesign |
Compared with MMSZ4700T1G and BZX84-C4V7, BZT52C4V7Q-7-F offers superior thermal performance (RθJL = 150 °C/W), guaranteed automotive qualification, and tighter process control for consistent voltage regulation in safety-critical vehicle subsystems.
Availability
BZT52C4V7Q-7-F is available at Aetrix Electronics and suitable for automotive body electronics, sensor interface design, and industrial I/O protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZT52C4V7Q-7-F 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.
This device belongs to the BZT52C series of AEC-Q101-qualified Zener diodes designed specifically for voltage regulation and transient suppression in harsh-environment automotive electronics.
FAQ
What is the maximum reverse leakage current for BZT52C4V7Q-7-F at 2.0 V?
The maximum reverse leakage current is 3.0 µA at VR = 2.0 V and TA = +25°C, as specified in the Electrical Characteristics table. This value remains ≤5.0 µA across the full operating temperature range (–65°C to +150°C), ensuring minimal loading in high-impedance bias networks.
Is BZT52C4V7Q-7-F compatible with lead-free reflow soldering profiles?
Yes - it is fully RoHS-compliant with matte tin finish on alloy 42 leadframe and qualified for soldering per MIL-STD-202, Method 208. The SOD123 package withstands peak reflow temperatures up to 260°C for 10 seconds, matching standard lead-free JEDEC J-STD-020 profiles.
How does the temperature coefficient affect regulation accuracy over automotive temperature ranges?
With a temperature coefficient of –3.5 mV/°C, the zener voltage drifts approximately ±0.44 V from –40°C to +125°C. At 5 mA test current, this yields a total regulation window of ~4.26–5.14 V - still within functional margin for 5 V system supervision where ±10% tolerance is acceptable.
Can BZT52C4V7Q-7-F replace BZT52C4V7-7-F in existing designs?
Yes - the "Q" suffix denotes AEC-Q101 qualification; all electrical, thermal, and mechanical specifications are identical to the commercial-grade BZT52C4V7-7-F. The only difference is enhanced reliability testing and traceability documentation required for automotive applications.
BZT52C4V7Q-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.7 V
- Tolerance:
- ±6.38%
- Power - Max:
- 370 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 2 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-123
BZT52C4V7Q-7-F FAQ
1.How can I place an order for BZT52C4V7Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C4V7Q-7-F 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 BZT52C4V7Q-7-F reliable?
The price and inventory of BZT52C4V7Q-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C4V7Q-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C4V7Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C4V7Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C4V7Q-7-F?
BZT52C4V7Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C4V7Q-7-F 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 BZT52C4V7Q-7-F?
For technical support, including BZT52C4V7Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C4V7Q-7-F requirements.
6.How does Aetrix verify that BZT52C4V7Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C4V7Q-7-F 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 BZT52C4V7Q-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C4V7Q-7-F?
All BZT52C4V7Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C4V7Q-7-F, 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 BZT52C4V7Q-7-F part is unused and in its original packaging.
Return procedure for BZT52C4V7Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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