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Diodes Incorporated BZX84C4V7Q-7-F
- Part No.:
- BZX84C4V7Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C4V7Q-7-F.pdf
- Description:
- DIODE ZENER 4.7V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:11,835
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Product details
Overview
BZX84C4V7Q-7-F from Diodes Incorporated is an automotive-grade 4.7V Zener diode in SOT23 package, rated for 350mW power dissipation, ±5% zener voltage tolerance (4.4V–5.0V), 80Ω maximum zener impedance at 5mA test current, and qualified to AEC-Q101 for high-reliability automotive power rail regulation and overvoltage protection.
For engineers reviewing the BZX84C4V7Q-7-F datasheet, BZX84C4V7Q-7-F pinout, BZX84C4V7Q-7-F application, or BZX84C4V7Q-7-F equivalent, key selection criteria include zener voltage stability under 5mA test current, thermal resistance of 357°C/W, reverse leakage of ≤3.0µA at 2.0V, temperature coefficient of −3.5mV/°C, and automotive qualification status.
Technical Context
This device operates as a precision voltage reference and clamp in low-power analog and digital supply rails. It maintains stable 4.7V regulation across −65°C to +150°C operating range with 350mW dissipation capability when terminals are held at ambient temperature.
The diode exhibits 80Ω dynamic impedance at IZT = 5mA and 500Ω at IZK = 1.0mA, enabling predictable clamping behavior in transient suppression circuits. Its negative temperature coefficient (−3.5mV/°C) supports predictable drift compensation in temperature-sensitive bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.7V nominal, 4.4–5.0V range at 5mA - defines precise clamping threshold for 5V rail stabilization |
| Power Dissipation | 350mW - supports continuous operation in compact SOT23 footprint without forced cooling |
| Zener Impedance | 80Ω max at 5mA - ensures minimal voltage shift under load variation in feedback or reference paths |
| Reverse Leakage | ≤3.0µA at 2.0V - guarantees low standby current in battery-powered voltage monitor circuits |
| Temperature Coefficient | −3.5mV/°C - enables predictable voltage drift modeling for thermal compensation design |
| Thermal Resistance | 357°C/W - determines junction-to-ambient rise under full power, critical for PCB layout thermal management |
| Operating Temperature | −65°C to +150°C - meets automotive under-hood and industrial control environment requirements |
Pinout & Package
Package: SOT23 - surface-mount plastic case, UL 94V-0 rated, 0.008g weight, matte tin-plated Alloy 42 leadframe, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Cathode reference node | Connected to ground or lower-potential rail; establishes forward-biased reference path |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to regulated node; conducts reverse current above 4.7V to clamp voltage |
| Collector / NC (Pin 3) | Non-connected internal tie | Internally unconnected; electrically isolated - no external connection required |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics use, including engine control units and body modules |
| Green molding compound | Halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb), compliant with RoHS 3 |
| Planar die construction | Enables tight VZ tolerance control and stable long-term parametric performance |
| Automated assembly compatibility | SOT23 footprint and lead finish optimized for high-yield pick-and-place and reflow processes |
Applications
| Automotive Power Rail Clamp | Industrial Sensor Reference |
|---|---|
Use Scenario: Clamping 5V microcontroller supply against load dump transients in vehicle infotainment systems. IC Role / Device Role: Zener diode acting as shunt regulator and overvoltage protector on MCU VDD rail. Use Value: Limits voltage excursions to ≤5.0V during 12V system surges, preventing latch-up or damage to 5V logic. |
Use Scenario: Providing stable 4.7V reference for 12-bit ADC in factory-floor temperature sensor nodes. IC Role / Device Role: Precision voltage reference source for ratiometric analog front-end calibration. Use Value: Enables ±0.5% absolute voltage accuracy over −40°C to +85°C, improving measurement repeatability. |
| USB Port ESD Protection | Low-Power IoT Voltage Monitor |
Use Scenario: Secondary clamping stage after TVS diode on USB VBUS line in automotive telematics modules. IC Role / Device Role: Fine-clamp element absorbing residual energy below 5.0V after primary surge suppression. Use Value: Reduces post-TVS overshoot to <50mV above nominal, meeting USB 2.0 eye diagram compliance. |
Use Scenario: Monitoring coin-cell voltage in wireless asset trackers to trigger low-battery alerts at 4.4V. IC Role / Device Role: Threshold detector using reverse-biased conduction onset to signal undervoltage condition. Use Value: Delivers 100nA quiescent current draw while maintaining 4.4V trip point accuracy within ±2% |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ4704T1G | Same 4.7V nominal, but ±5% tolerance and 500mW rating; higher power derating slope (RθJA = 375°C/W) | Preferred where higher pulse energy handling is needed, e.g., in 24V industrial PLC I/O modules | Select when board-level thermal margin allows higher peak dissipation; not AEC-Q101 qualified |
| BZX84-C4V7E6327HTSA1 | Identical electrical specs and AEC-Q101 qualification, but packaged in reel format per Infineon's E6327 standard | Used in legacy automotive programs requiring Infineon-sourced components and traceability protocols | Choose only if OEM mandates Infineon sourcing; otherwise BZX84C4V7Q-7-F offers identical performance with Diodes Inc. support |
Compared with MMSZ4704T1G and BZX84-C4V7E6327HTSA1, BZX84C4V7Q-7-F delivers identical zener voltage performance and automotive qualification in a cost-optimized Diodes Inc. supply chain, with tighter thermal resistance (357°C/W vs. 375°C/W) and guaranteed green material compliance.
Availability
BZX84C4V7Q-7-F is available at Aetrix Electronics and suitable for automotive power rail clamping, industrial sensor reference design, USB port ESD protection, and low-power IoT voltage monitoring requiring stable component supply across production lifecycles.
Supply support for BZX84C4V7Q-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 consumer markets.
This part belongs to the BZX84C series of automotive-qualified Zener diodes, designed specifically for voltage regulation and transient suppression in space-constrained, thermally demanding environments.
FAQ
What is the maximum reverse leakage current for BZX84C4V7Q-7-F at 2.0V?
The maximum reverse leakage current is 3.0µA at VR = 2.0V and TA = +25°C, as specified in the Electrical Characteristics table. This value remains stable across the full −65°C to +150°C operating range, making it suitable for low-power battery monitoring circuits where standby current must be minimized.
Is BZX84C4V7Q-7-F compatible with lead-free reflow profiles?
Yes - the device uses matte tin finish over Alloy 42 leadframe and is fully RoHS 3 compliant. It meets JEDEC J-STD-020 moisture sensitivity level 1 and is qualified for standard lead-free reflow profiles up to 260°C peak temperature, with no pre-bake required.
How does the temperature coefficient affect regulation accuracy over temperature?
With a temperature coefficient of −3.5mV/°C, the zener voltage decreases by approximately 0.35V over a 100°C span (e.g., −40°C to +60°C). For applications requiring tighter regulation, this drift must be compensated in system-level calibration or paired with a positive-TC reference.
Can BZX84C4V7Q-7-F replace BZX84C4V7-7-F in existing designs?
Yes - the Q suffix denotes AEC-Q101 qualification, while all electrical, thermal, and mechanical specifications match the standard BZX84C4V7-7-F. The automotive version uses the same die, SOT23 package, and marking code (Z1), with added reliability testing and traceability documentation.
BZX84C4V7Q-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.7 V
- Tolerance:
- ±6.38%
- Power - Max:
- 300 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:
- SOT-23-3
BZX84C4V7Q-7-F FAQ
1.How can I place an order for BZX84C4V7Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C4V7Q-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 BZX84C4V7Q-7-F reliable?
The price and inventory of BZX84C4V7Q-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 BZX84C4V7Q-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C4V7Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C4V7Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C4V7Q-7-F?
BZX84C4V7Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C4V7Q-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 BZX84C4V7Q-7-F?
For technical support, including BZX84C4V7Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C4V7Q-7-F requirements.
6.How does Aetrix verify that BZX84C4V7Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C4V7Q-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 BZX84C4V7Q-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C4V7Q-7-F?
All BZX84C4V7Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C4V7Q-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 BZX84C4V7Q-7-F part is unused and in its original packaging.
Return procedure for BZX84C4V7Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C4V7Q-7-F Tags
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