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Diodes Incorporated BZX84C10Q-7-F
- Part No.:
- BZX84C10Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C10Q-7-F.pdf
- Description:
- DIODE ZENER 10V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:5,300
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Product details
Overview
BZX84C10Q-7-F from Diodes Incorporated is an automotive-grade 10V Zener diode in SOT23 package, rated for 350mW power dissipation, ±6% zener voltage tolerance (9.4–10.6V at 5mA), and 20Ω maximum zener impedance at test current - used for precision voltage regulation and overvoltage protection in automotive body control modules.
For engineers reviewing the BZX84C10Q-7-F datasheet, BZX84C10Q-7-F pinout, BZX84C10Q-7-F application, or BZX84C10Q-7-F equivalent, key selection criteria include AEC-Q101 qualification, low reverse leakage (≤0.2µA at 7.0V), thermal resistance of 357°C/W, and compatibility with automated SMT assembly on FR-4 PCBs.
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 and long-term stability across automotive temperature range (−65°C to +150°C).
Designed for clamping and voltage regulation in low-power circuits, it delivers specified zener voltage at 5mA test current with a temperature coefficient of +4.5mV/°C - enabling predictable drift compensation in analog sensing and power monitoring paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10 V nominal, 9.4–10.6 V range at IZT = 5 mA - defines regulation setpoint for feedback loops and reference rails. |
| Power Dissipation | 350 mW at TA = 25°C - limits continuous clamp energy in transient suppression applications. |
| Zener Impedance (ZZT) | 20 Ω max at 1 kHz, 5 mA - determines output voltage ripple and regulation stiffness under dynamic load. |
| Reverse Leakage (IR) | 0.2 µA max at VR = 7.0 V - ensures minimal quiescent current in battery-powered systems. |
| Thermal Resistance (RθJA) | 357 °C/W - defines junction-to-ambient temperature rise per watt, critical for thermal design on standard FR-4 layouts. |
| Temperature Coefficient | +4.5 mV/°C - quantifies voltage drift per degree Celsius, enabling accurate compensation in wide-temperature environments. |
Pinout & Package
Package: SOT23 - surface-mount, 3-terminal plastic package with matte tin finish, UL 94V-0 rating, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower potential node during normal operation; enables reverse-bias configuration for regulation. |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to regulated voltage rail; carries reverse current during clamping or reference generation. |
| No Connection (Pin 3) | Internal die attach pad | Electrically isolated; serves mechanical anchoring function only - must not be connected in circuit layout. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics use, including engine control units and infotainment power supplies. |
| Green molding compound | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb), compliant with RoHS 3 and automotive environmental standards. |
| Low-profile SMT package | SOT23 footprint (2.4 × 1.3 mm) supports high-density PCB layouts and reflow-compatible assembly. |
| Stable zener voltage tolerance | ±6% over production lot ensures predictable regulation without post-manufacture trimming. |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 10V reference for microcontroller ADC inputs in door module ECUs. IC Role / Device Role / Timing Role: Voltage reference generator providing stable bias for analog front-end circuits. Use Value: Maintains ADC accuracy across −40°C to +125°C ambient with <±1% total error contribution from zener drift and impedance. |
Use Scenario: Clamping 12V supply rail against load dump transients in pressure sensor interfaces. IC Role / Device Role / Timing Role: Overvoltage protector limiting rail excursion to ≤10.6V during 40V/100ms pulses. Use Value: Prevents op-amp saturation and preserves signal integrity without adding series resistance or delay. |
| USB-C Power Delivery Monitor | Smart Meter Voltage Reference |
Use Scenario: Providing 10V reference for voltage divider networks measuring VBUS in USB-C PD negotiation circuits. IC Role / Device Role / Timing Role: Precision shunt reference enabling ±1% input voltage measurement accuracy. Use Value: Enables compliance with USB PD specification's 50mV measurement tolerance at 20V VBUS levels. |
Use Scenario: Stabilizing bandgap reference in polyphase electricity meter SoCs operating at 85–265V AC mains. IC Role / Device Role / Timing Role: Secondary reference source backing up internal bandgap during brown-out events. Use Value: Ensures metrology accuracy remains within Class 0.5 limits even during 100ms line sags below 150V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5240B-7-F | Zener voltage 10V, but rated 300mW (vs. 350mW); higher ZZT (30Ω vs. 20Ω); no AEC-Q101 qualification. | Limited to commercial-grade consumer electronics; unsuitable for under-hood automotive use. | Select when cost is primary constraint and AEC-Q101 compliance is not required. |
| BZX84-C10-HE3-08 | Same 10V rating and SOT23 package, but Vishay part with ±5% tolerance (tighter than ±6%) and 15Ω ZZT; AEC-Q101 qualified. | Higher precision and lower impedance support tighter regulation in high-accuracy analog designs. | Prefer for applications demanding <±0.5% total reference error over temperature and life. |
Compared with MMBZ5240B-7-F and BZX84-C10-HE3-08, BZX84C10Q-7-F balances automotive reliability, thermal performance (357°C/W), and cost-effectiveness - making it optimal for volume automotive body electronics where ±6% tolerance and 350mW capability meet system requirements.
Availability
BZX84C10Q-7-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, and smart meter reference circuits requiring stable component supply with full traceability and lifecycle continuity.
Supply support for BZX84C10Q-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 BZX84C automotive Zener diode family, engineered specifically for robust voltage regulation and transient suppression in harsh-environment electronic control units.
FAQ
What is the maximum reverse voltage (VR) this diode can withstand before breakdown?
The BZX84C10Q-7-F has a nominal zener voltage of 10V with a guaranteed range of 9.4V to 10.6V at 5mA test current. It begins controlled reverse breakdown at the lower end of that range and maintains regulation up to its 350mW power limit. The absolute maximum non-destructive reverse voltage is not defined separately - operation beyond 10.6V requires current limiting to stay within safe power dissipation.
Is this part suitable for use in a 12V automotive power rail protection circuit?
Yes - the BZX84C10Q-7-F is commonly used to clamp 12V rails during load dump events. With a 10V nominal zener voltage and 0.2µA leakage at 7V, it remains effectively off until rail voltage exceeds ~9.4V, then clamps near 10.6V while dissipating energy within its 350mW rating when paired with appropriate series current-limiting resistance.
How does the "Q" suffix in BZX84C10Q-7-F affect its specifications?
Per Diodes Incorporated's ordering nomenclature, the "Q" denotes automotive qualification per AEC-Q101. This includes extended temperature testing (−65°C to +150°C), enhanced reliability screening, and green material compliance - all verified in the same die and package as the standard BZX84C10-7-F, with identical electrical parameters.
Can this Zener diode replace a 1N4740A in an existing design?
No - the 1N4740A is a through-hole 10V Zener in DO-41 package rated for 1W, while BZX84C10Q-7-F is a 350mW SOT23 surface-mount device. Though both regulate at ~10V, the power handling, thermal path, and PCB footprint differ significantly; direct replacement requires layout revision and derating analysis for thermal and surge capability.
BZX84C10Q-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):
- 10 V
- Tolerance:
- ±6%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 7 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
BZX84C10Q-7-F FAQ
1.How can I place an order for BZX84C10Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C10Q-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 BZX84C10Q-7-F reliable?
The price and inventory of BZX84C10Q-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 BZX84C10Q-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C10Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C10Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C10Q-7-F?
BZX84C10Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C10Q-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 BZX84C10Q-7-F?
For technical support, including BZX84C10Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C10Q-7-F requirements.
6.How does Aetrix verify that BZX84C10Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C10Q-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 BZX84C10Q-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C10Q-7-F?
All BZX84C10Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C10Q-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 BZX84C10Q-7-F part is unused and in its original packaging.
Return procedure for BZX84C10Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C10Q-7-F Tags
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