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Diodes Incorporated BZX84B3V6Q-7-F
- Part No.:
- BZX84B3V6Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84B3V6Q-7-F.pdf
- Description:
- DIODE ZENER 3.6V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:9,791
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Product details
Overview
BZX84B3V6Q-7-F from Diodes Incorporated is an AEC-Q101 qualified, ±2% tolerance, 3.6 V precision Zener diode in SOT23 package, rated for 350 mW power dissipation and 5 mA test current, used for voltage regulation and reference in automotive power supply monitoring circuits.
For engineers reviewing the BZX84B3V6Q-7-F datasheet, BZX84B3V6Q-7-F pinout, BZX84B3V6Q-7-F application, or BZX84B3V6Q-7-F equivalent, key selection criteria include zener voltage tolerance (±2%), low dynamic impedance (90 Ω at 5 mA), automotive qualification, thermal resistance (357 °C/W), and reverse leakage (5 µA at 1 V).
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 3.6 V reference under regulated current conditions. Its ±2% initial tolerance and -3.5 mV/°C temperature coefficient enable predictable drift behavior across -65°C to +150°C operating range.
Designed for high-reliability automotive applications, it features lead-free matte tin plating, halogen/antimony-free "Green" molding compound (UL 94V-0), and moisture sensitivity level 1 - supporting robust automated assembly and long-term stability in engine control units and body electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.6 V nominal, 3.53–3.67 V range at 5 mA - ensures tight voltage reference for feedback loops |
| Tolerance | ±2% - reduces calibration overhead in precision analog sensing circuits |
| Power Dissipation | 350 mW - supports continuous operation in compact SOT23 footprint without forced cooling |
| Zener Impedance (ZZT) | 90 Ω at 5 mA - minimizes output voltage variation under load transients |
| Reverse Leakage (IR) | 5 µA at 1 V - enables low-power standby regulation in always-on vehicle modules |
| Thermal Resistance (RθJA) | 357 °C/W - defines junction-to-ambient rise under full power on standard FR-4 PCB |
| Temperature Coefficient | -3.5 mV/°C - allows accurate drift compensation in temperature-critical ECU references |
Pinout & Package
Package: SOT23 - surface-mount, 3-terminal plastic case with 0.008 g mass, UL 94V-0 rating, and J-STD-020 Level 1 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal / cathode reference ground path | Connected to system ground when used in shunt regulation; defines polarity per top-view schematic |
| Cathode (Pin 2) | Zener breakdown terminal / regulated output node | Connected to input rail; clamps voltage to 3.6 V when reverse-biased above breakdown threshold |
| No-Connect (Pin 3) | Internal die attach pad / mechanical support | Not electrically connected; serves thermal and mechanical anchoring function in SOT23 mold |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| ±2% VZ tolerance | Reduces post-manufacturing trimming requirements in voltage reference designs |
| Lead-free & halogen-free construction | Complies with RoHS 3 (2015/863/EU) and automotive ELV directives without performance trade-offs |
| SOT23 footprint compatibility | Enables drop-in replacement in legacy 3-pin regulator layouts with standardized 0.9 mm pitch |
Applications
| Engine Control Unit Power Monitoring | Body Control Module Reference |
|---|---|
Use Scenario: Regulating 5 V microcontroller supply rail against battery voltage fluctuations during cold cranking. IC Role / Device Role / Timing Role: Shunt Zener reference providing stable 3.6 V bias for comparator threshold generation. Use Value: Maintains <±2% trip point accuracy across -40°C to +125°C ambient, ensuring reliable overvoltage detection. | Use Scenario: Providing reference voltage for LIN bus transceiver biasing in door module electronics. IC Role / Device Role / Timing Role: Precision voltage clamp stabilizing internal LDO feedback node. Use Value: Enables consistent 3.6 V reference despite 9–16 V input swings, reducing LIN signal jitter by 12%. |
| ADAS Camera Power Sequencing | Electric Power Steering Sensor Biasing |
Use Scenario: Generating clean 3.6 V reference for image sensor ADC in rearview camera module. IC Role / Device Role / Timing Role: Low-noise Zener source feeding precision voltage divider network. Use Value: Delivers <5 µA leakage at 1 V, minimizing offset error in 12-bit sensor readout chain. | Use Scenario: Biasing Hall-effect position sensor in EPS motor control board. IC Role / Device Role / Timing Role: Stable voltage reference for ratiometric sensor excitation circuit. Use Value: ±2% tolerance ensures <0.5% angular measurement error across full temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5227BS-7-F | Same 3.6 V nominal, but ±5% tolerance and 200 mW rating | Lacks AEC-Q101 qualification; suitable only for industrial/commercial use | Select when cost sensitivity outweighs automotive compliance and tighter tolerance needs |
| BZX84-C3V6-7-F | Same SOT23 package and 3.6 V rating, but ±5% tolerance and non-automotive grade | Higher 10 µA leakage at 1 V; not qualified to AEC-Q101 | Choose for non-automotive designs where RoHS compliance suffices and thermal margin is ample |
Compared with BZX84B3V6Q-7-F, MMBZ5227BS-7-F offers lower cost but sacrifices automotive qualification and voltage precision, while BZX84-C3V6-7-F trades tolerance and leakage performance for broader commercial availability - making the Q-grade part essential for safety-critical vehicle subsystems.
Availability
BZX84B3V6Q-7-F is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera power supplies, and electric power steering sensor biasing requiring stable component supply across automotive production lifecycles.
Supply support for BZX84B3V6Q-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.
The BZX84B series belongs to Diodes' precision Zener diode product line, engineered specifically for AEC-Q101-compliant voltage reference and regulation in harsh-environment automotive electronics.
FAQ
What is the maximum reverse voltage this Zener can withstand before breakdown?
The BZX84B3V6Q-7-F has a nominal Zener voltage of 3.6 V with a guaranteed range of 3.53–3.67 V at 5 mA test current. It begins controlled breakdown within this band and is not rated for sustained operation above its specified VZ range - exceeding 3.67 V risks thermal runaway unless current is strictly limited by external series resistance.
Is this device suitable for use in a 12 V automotive system?
Yes - when used with appropriate series current-limiting resistance, the BZX84B3V6Q-7-F regulates 3.6 V from 12 V inputs in automotive systems. Its 350 mW rating and AEC-Q101 qualification make it suitable for under-hood environments where input voltage may reach 16 V during load dump events.
How does the -3.5 mV/°C temperature coefficient affect circuit performance?
The negative temperature coefficient means the Zener voltage decreases by 3.5 mV per degree Celsius rise. Over a -40°C to +125°C range, this results in ~577 mV total drift - a known, linear effect that can be compensated in feedback networks or accepted where ±2% initial tolerance dominates overall error budget.
Can this Zener replace a 3.3 V device in an existing design?
No - the BZX84B3V6Q-7-F is specified at 3.6 V nominal with 3.53–3.67 V range, differing by >8% from a typical 3.3 V Zener. Substituting it would shift reference points, potentially causing comparator mis-triggering or ADC scaling errors unless circuit gain or feedback ratios are recalculated.
BZX84B3V6Q-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):
- 3.6 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 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
BZX84B3V6Q-7-F FAQ
1.How can I place an order for BZX84B3V6Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84B3V6Q-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 BZX84B3V6Q-7-F reliable?
The price and inventory of BZX84B3V6Q-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 BZX84B3V6Q-7-F is usually 5 days.
3.What payment methods are accepted for BZX84B3V6Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84B3V6Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84B3V6Q-7-F?
BZX84B3V6Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84B3V6Q-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 BZX84B3V6Q-7-F?
For technical support, including BZX84B3V6Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84B3V6Q-7-F requirements.
6.How does Aetrix verify that BZX84B3V6Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84B3V6Q-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 BZX84B3V6Q-7-F meets industry standards.
7.What is the process for return or replacement of BZX84B3V6Q-7-F?
All BZX84B3V6Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84B3V6Q-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 BZX84B3V6Q-7-F part is unused and in its original packaging.
Return procedure for BZX84B3V6Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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