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Diodes Incorporated BZX84C3V6Q-7-F
- Part No.:
- BZX84C3V6Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C3V6Q-7-F.pdf
- Description:
- DIODE ZENER 3.6V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,754
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Product details
Overview
BZX84C3V6Q-7-F from Diodes Incorporated is an automotive-grade 3.6 V, 5 mA Zener diode in SOT23 package, rated for 350 mW power dissipation and −3.5 mV/°C temperature coefficient, used for precision voltage reference and overvoltage protection in low-power sensor signal conditioning circuits.
For engineers reviewing the BZX84C3V6Q-7-F datasheet, BZX84C3V6Q-7-F pinout, BZX84C3V6Q-7-F application, or BZX84C3V6Q-7-F equivalent, key selection criteria include zener voltage tolerance (±0.2 V), low dynamic impedance (90 Ω @ 5 mA), AEC-Q101 qualification, thermal resistance (357 °C/W), and automotive tape-and-reel packaging (3,000 pcs/reel).
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal zener voltage of 3.6 V at 5 mA test current, exhibiting a tightly controlled voltage range (3.4–3.8 V) and stable temperature coefficient (−3.5 mV/°C). Its planar die construction ensures consistent parametric performance across production lots.
Designed for surface-mount automated assembly, it delivers 350 mW power dissipation under ambient-temperature terminal conditions and maintains ≤5 µA reverse leakage at 1.0 V, supporting low-quiescent-current biasing in automotive microcontroller I/O protection and analog front-end regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.6 V nominal at 5 mA - sets precise clamping threshold for 3.3 V rail protection |
| Zener Voltage Tolerance | ±0.2 V (3.4–3.8 V) - enables tight voltage margin control in safety-critical sensing |
| Zener Impedance (ZZT) | 90 Ω @ 5 mA - ensures minimal voltage shift under load variation in reference circuits |
| Power Dissipation | 350 mW - supports sustained operation in compact SOT23 footprint without forced cooling |
| Temperature Coefficient | −3.5 mV/°C - provides predictable, linear drift for compensated voltage references |
| Reverse Leakage (IR) | 5.0 µA @ 1.0 V - guarantees negligible standby current in battery-powered modules |
| Thermal Resistance (RθJA) | 357 °C/W - defines junction-to-ambient rise under full power on standard FR-4 PCB |
Pinout & Package
Package: SOT23 - surface-mount plastic case, 0.008 g weight, UL 94V-0 flammability rating, matte tin-plated Alloy 42 leadframe, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction path / cathode reference node | Connected to ground or lower-potential node in shunt regulation configuration |
| Cathode (Pin 2) | Zener breakdown terminal / voltage clamp input | Connected to protected node (e.g., MCU I/O line); conducts when voltage exceeds 3.6 V |
| NC / Heat Sink (Pin 3) | Non-connected / thermal relief pad | Internally unconnected; may be tied to ground plane for improved thermal dissipation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| Green molding compound | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb), compliant with RoHS 3 |
| Planar die construction | Ensures repeatable zener voltage distribution and low parameter drift over lifetime |
| SOT23 tape-and-reel packaging | 3,000 units per reel, optimized for high-speed pick-and-place assembly |
Applications
| Automotive Sensor Biasing | Industrial I/O Protection |
|---|---|
Use Scenario: Providing stable 3.6 V bias to analog output sensors (e.g., pressure transducers) in engine control modules. IC Role / Device Role / Timing Role: Shunt voltage reference and noise filter for sensor excitation circuitry. Use Value: Maintains ±0.2 V regulation accuracy across −40°C to +125°C, ensuring sensor linearity and ADC accuracy. | Use Scenario: Clamping transient overvoltage on 3.3 V digital I/O lines in PLC input modules exposed to ESD and inductive switching. IC Role / Device Role / Timing Role: Low-capacitance (≈30 pF) voltage clamp protecting FPGA or microcontroller pins. Use Value: Limits voltage to ≤3.8 V during 8 kV HBM ESD events while drawing <5 µA leakage at operating voltage. |
| Portable Medical Monitor Reference | Smart Meter Power Supply Monitoring |
Use Scenario: Generating a stable reference for battery voltage monitoring in handheld ECG devices. IC Role / Device Role / Timing Role: Precision voltage reference for ADC input scaling in ultra-low-power sleep mode. Use Value: Delivers 3.6 V ±0.2 V with only 5 µA reverse leakage, extending battery life beyond 5 years. | Use Scenario: Monitoring regulated 3.3 V supply integrity in utility smart meters operating in wide-temperature outdoor enclosures. IC Role / Device Role / Timing Role: Supervisory element detecting undervoltage or overvoltage faults via comparator input. Use Value: Enables reliable fault detection across −40°C to +85°C with <0.5% voltage drift due to −3.5 mV/°C TC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ4685-TP (Micro Commercial) | Same 3.6 V nominal, but ±5% tolerance (3.42–3.78 V); 500 mW rating; non-AEC-Q101 | Lacks automotive qualification and tighter tolerance; suitable for commercial-grade consumer products only | Select only if AEC-Q101 compliance and 3.4–3.8 V binning are not required |
| BZX84-C3V6,115 (Nexperia) | Identical 3.6 V spec, same SOT23 package, but rated 300 mW (not 350 mW); RoHS-compliant, non-automotive grade | Lower power derating margin limits use in thermally constrained automotive PCBs | Prefer for cost-sensitive industrial designs where 350 mW headroom is unnecessary |
Compared with MMSZ4685-TP and BZX84-C3V6,115, BZX84C3V6Q-7-F offers superior automotive reliability (AEC-Q101), higher power capability (350 mW vs. 300/500 mW), and tighter voltage binning-critical for functional safety–aligned voltage supervision in ASIL-B systems.
Availability
BZX84C3V6Q-7-F is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial I/O protection, and portable medical monitor reference requiring stable component supply with guaranteed AEC-Q101 compliance and traceable lot-level documentation.
Supply support for BZX84C3V6Q-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 BZX84C series belongs to Diodes' automotive-qualified Zener diode product line, engineered specifically for robust voltage regulation and transient suppression in harsh-environment electronic control units.
FAQ
What is the maximum reverse voltage (VR) this Zener diode can withstand before breakdown?
The BZX84C3V6Q-7-F has a nominal zener voltage of 3.6 V at 5 mA, with a guaranteed breakdown range of 3.4 V to 3.8 V. It does not specify a separate "maximum reverse voltage" rating; instead, its safe operating reverse voltage is defined by its 1.0 V reverse leakage test condition (5.0 µA max), meaning it remains effectively non-conductive below ~1.0 V and enters controlled breakdown above ~3.4 V.
Is this device suitable for use in a 3.3 V logic rail protection circuit?
Yes - with a nominal 3.6 V zener voltage and 3.4–3.8 V tolerance window, it clamps transients above the 3.3 V rail while remaining fully off during normal operation (leakage ≤5 µA at 1.0 V). Its 90 Ω dynamic impedance ensures minimal overshoot during fast ESD events, making it appropriate for I/O line protection in 3.3 V systems.
Does the "Q" suffix indicate AEC-Q101 qualification, and is it reflected in the device marking?
Yes - the "Q" in BZX84C3V6Q-7-F explicitly denotes AEC-Q101 qualification per Diodes Incorporated's ordering nomenclature. Devices are marked with "ZF" (zener code for 3.6 V) and date code; AEC-Q101 status is confirmed via part number suffix and certified in the manufacturer's qualification report, not printed on the package.
How does thermal resistance change when mounted on a 2-layer versus 4-layer PCB?
The datasheet specifies RθJA = 357 °C/W assuming terminals held at ambient temperature (Note 7), and 417 °C/W for FR-4 board with recommended pad layout (Note 6). A 4-layer board with internal ground/power planes typically reduces RθJA by 15–25% versus a 2-layer board - expect ~270–300 °C/W with adequate copper pour, improving power handling margin at elevated ambient temperatures.
BZX84C3V6Q-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:
- ±5.56%
- 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
BZX84C3V6Q-7-F FAQ
1.How can I place an order for BZX84C3V6Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C3V6Q-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 BZX84C3V6Q-7-F reliable?
The price and inventory of BZX84C3V6Q-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 BZX84C3V6Q-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C3V6Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C3V6Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C3V6Q-7-F?
BZX84C3V6Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C3V6Q-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 BZX84C3V6Q-7-F?
For technical support, including BZX84C3V6Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C3V6Q-7-F requirements.
6.How does Aetrix verify that BZX84C3V6Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C3V6Q-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 BZX84C3V6Q-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C3V6Q-7-F?
All BZX84C3V6Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C3V6Q-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 BZX84C3V6Q-7-F part is unused and in its original packaging.
Return procedure for BZX84C3V6Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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