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Diodes Incorporated BZX84C9V1Q-7-F
- Part No.:
- BZX84C9V1Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C9V1Q-7-F.pdf
- Description:
- DIODE ZENER 9.1V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
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Product details
Overview
BZX84C9V1Q-7-F from Diodes Incorporated is an automotive-grade 9.1 V, 350 mW surface-mount Zener diode in SOT23 package, designed for precision voltage regulation and overvoltage protection in low-power analog circuits. It delivers ±5.5% Zener voltage tolerance at 5 mA test current, exhibits 15 Ω dynamic impedance at IZT, and maintains stable operation across –65 °C to +150 °C ambient range - used in automotive sensor biasing and MCU reference stabilization.
For engineers reviewing the BZX84C9V1Q-7-F datasheet, BZX84C9V1Q-7-F pinout, BZX84C9V1Q-7-F application, or BZX84C9V1Q-7-F equivalent, key selection criteria include Zener voltage accuracy (8.5–9.6 V), low reverse leakage (<0.5 µA @ 6.0 V), temperature coefficient (+3.8 mV/°C), and AEC-Q101 qualification for automotive reliability.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal 9.1 V regulation point at 5 mA test current, featuring a 15 Ω Zener impedance at IZT and 100 Ω at knee current (IZK = 1.0 mA). Its positive temperature coefficient of +3.8 mV/°C enables predictable drift compensation in voltage references.
The device uses planar die construction in a molded plastic SOT23 case with matte tin-plated alloy 42 leads, rated for 350 mW power dissipation at TA = 25 °C and derated linearly above 50 °C per the published curve. It meets AEC-Q101 stress testing requirements for high-reliability automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.1 V nominal, 8.5–9.6 V min/max at IZT = 5 mA - defines precise clamping threshold for supply rail protection |
| Power Dissipation | 350 mW at TA = 25 °C - supports continuous regulation in compact PCB layouts without forced cooling |
| Zener Impedance | 15 Ω at IZT = 5 mA; 100 Ω at IZK = 1.0 mA - determines output voltage stability under varying load current |
| Reverse Leakage | 0.5 µA max at VR = 6.0 V - ensures minimal quiescent current draw in battery-powered sensing nodes |
| Temperature Coefficient | +3.8 mV/°C - enables predictable voltage drift correction in temperature-sensitive analog front-ends |
| Operating Temperature | –65 °C to +150 °C - qualified for under-hood automotive environments and industrial control enclosures |
Pinout & Package
Package: SOT23 - 3-terminal surface-mount plastic package with 0.915 mm lead pitch, 2.40 mm body length, and UL 94V-0 flammability rating. Moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower-potential node during Zener operation; required for correct polarity in reverse-bias configuration |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to higher-potential node; carries regulated current when reverse voltage exceeds 9.1 V |
| NC / Dummy (Pin 3) | Non-connected internal tie | Internally unconnected; electrically isolated - must not be soldered to trace or plane to avoid mechanical stress |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| Green molding compound | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) - compliant with RoHS 3 and automotive environmental standards |
| Low thermal resistance | RθJA = 357 °C/W (with terminals at ambient) - enables reliable power handling without heatsinking |
| Stable Zener knee | IZK = 1.0 mA with VZK = 7.0 V - ensures predictable turn-on behavior in low-current regulation circuits |
Applications
| Automotive Sensor Biasing | MCU Reference Voltage Stabilization |
|---|---|
Use Scenario: Providing stable bias voltage to analog output sensors (e.g., pressure, temperature) in engine control units. IC Role / Device Role / Timing Role: Zener voltage reference source for sensor excitation circuitry. Use Value: Maintains 9.1 V ±5.5% accuracy across –40 °C to +125 °C, ensuring consistent sensor output scaling despite supply fluctuations. |
Use Scenario: Stabilizing internal ADC reference or I/O pull-up voltage in automotive microcontrollers. IC Role / Device Role / Timing Role: Precision shunt regulator for low-noise analog subsystems. Use Value: Delivers <0.5 µA reverse leakage at 6 V, minimizing standby current in always-on vehicle modules. |
| USB Port Overvoltage Protection | Industrial Signal Conditioning |
Use Scenario: Clamping transient surges on 5 V USB data/power lines in infotainment head units. IC Role / Device Role / Timing Role: Fast-response shunt protector against ESD and load dump events. Use Value: Activates within nanoseconds at 9.1 V, diverting >100 mA surge current while limiting downstream voltage to safe levels. |
Use Scenario: Regulating excitation voltage for 4–20 mA loop transmitters in factory automation systems. IC Role / Device Role / Timing Role: Primary voltage clamp in two-wire transmitter power rails. Use Value: Withstands 150 °C junction temperature and maintains 15 Ω ZZT, ensuring stable loop current under wide ambient swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5240B-TP (Micro Commercial) | 9.1 V nominal, ±5% tolerance, 500 mW rating, SOD-123 package | Larger footprint and higher power - suited for non-space-constrained industrial boards | Select when higher surge energy handling is needed and SOT23 size is not mandatory |
| BZX84-C9V1,115 (Nexperia) | 9.1 V nominal, ±5% tolerance, 300 mW rating, AEC-Q101 qualified, same SOT23 package | Slightly lower power rating and different Zener impedance (20 Ω vs. 15 Ω) | Choose for cost-sensitive automotive designs where 300 mW suffices and tighter ZZT is not critical |
Compared with MMSZ5240B-TP and BZX84-C9V1,115, BZX84C9V1Q-7-F offers optimal balance of AEC-Q101 compliance, 350 mW capability, and 15 Ω Zener impedance in the industry-standard SOT23 footprint - making it preferred for space-constrained, high-stability automotive voltage references.
Availability
BZX84C9V1Q-7-F is available at Aetrix Electronics and suitable for automotive sensor biasing, MCU reference stabilization, and USB port overvoltage protection requiring stable component supply across production lifecycles.
Supply support for BZX84C9V1Q-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.
BZX84C9V1Q-7-F belongs to the BZX84C automotive Zener diode family, engineered specifically for precision voltage regulation and transient suppression in harsh-environment electronic control units.
FAQ
What is the maximum reverse voltage before breakdown for BZX84C9V1Q-7-F?
The nominal Zener voltage is 9.1 V at 5 mA test current, with guaranteed minimum and maximum values of 8.5 V and 9.6 V respectively. Breakdown occurs within this range depending on unit-to-unit variation and operating temperature - no fixed "maximum reverse voltage" exists outside this specification band.
Is BZX84C9V1Q-7-F compatible with lead-free reflow soldering processes?
Yes - it features matte tin finish over alloy 42 leadframe, qualified for lead-free reflow per JEDEC J-STD-020, with moisture sensitivity level 1 and peak reflow temperature tolerance up to 260 °C.
How does temperature affect the Zener voltage of this diode?
It has a positive temperature coefficient of +3.8 mV/°C, meaning its Zener voltage increases by approximately 3.8 mV for each 1 °C rise in junction temperature - enabling predictable compensation in temperature-critical references.
Can BZX84C9V1Q-7-F replace BZX84C9V1-7-F in existing designs?
Yes - both share identical electrical specifications and SOT23 package; the "Q" suffix denotes AEC-Q101 qualification, so the Q-version adds automotive reliability validation without altering pinout, footprint, or performance parameters.
BZX84C9V1Q-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):
- 9.1 V
- Tolerance:
- ±6.04%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 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
BZX84C9V1Q-7-F FAQ
1.How can I place an order for BZX84C9V1Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C9V1Q-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 BZX84C9V1Q-7-F reliable?
The price and inventory of BZX84C9V1Q-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 BZX84C9V1Q-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C9V1Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C9V1Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C9V1Q-7-F?
BZX84C9V1Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C9V1Q-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 BZX84C9V1Q-7-F?
For technical support, including BZX84C9V1Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C9V1Q-7-F requirements.
6.How does Aetrix verify that BZX84C9V1Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C9V1Q-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 BZX84C9V1Q-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C9V1Q-7-F?
All BZX84C9V1Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C9V1Q-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 BZX84C9V1Q-7-F part is unused and in its original packaging.
Return procedure for BZX84C9V1Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C9V1Q-7-F Tags
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