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Diodes Incorporated BZX84C11-7-F
- Part No.:
- BZX84C11-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C11-7-F.pdf
- Description:
- DIODE ZENER 11V 300MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:14,923
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Product details
Overview
BZX84C11-7-F from Diodes Incorporated is a 350 mW surface-mount Zener diode with a nominal zener voltage of 11 V (10.4–11.6 V range at 5 mA), 20 Ω maximum zener impedance at test current, and 0.1 µA maximum reverse leakage at 8.0 V. It uses planar die construction in SOT23 package and is qualified to AEC-Q101 for automotive-grade reliability. It serves as a precision voltage reference or overvoltage clamp in low-power power supply regulation circuits.
For engineers reviewing the BZX84C11-7-F datasheet, BZX84C11-7-F pinout, BZX84C11-7-F application, or BZX84C11-7-F equivalent, key selection criteria include its 11 V zener tolerance, thermal resistance of 357 °C/W under ambient-terminated conditions, RoHS-compliant lead-free plating, and suitability for automated SMT assembly in space-constrained consumer and automotive electronics.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified test current of 5 mA and exhibits a temperature coefficient of +5.4 mV/°C - indicating positive drift with rising junction temperature. Its low 0.1 µA reverse current at VR = 8.0 V enables stable clamping in standby or low-quiescent circuits.
The device's 350 mW power rating is valid only when terminals are held at ambient temperature; derating begins above 25°C per the published curve. Its SOT23 package delivers compact footprint (2.4 × 1.3 × 1.0 mm) with matte tin-plated Alloy 42 leads, ensuring solderability per MIL-STD-202 Method 208.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11 V nominal (10.4–11.6 V range at IZT = 5 mA); defines precise clamping threshold for voltage regulation |
| Power Dissipation (PD) | 350 mW at TA = 25°C with ambient-terminated leads; sets max continuous dissipation without forced cooling |
| Zener Impedance (ZZT) | 20 Ω max at IZT = 5 mA; ensures minimal voltage variation under load changes in reference applications |
| Reverse Leakage (IR) | 0.1 µA max at VR = 8.0 V; guarantees low standby current in battery-powered or high-impedance bias networks |
| Thermal Resistance (RθJA) | 357 °C/W (ambient-terminated condition); determines junction temperature rise per watt dissipated |
| Temperature Coefficient | +5.4 mV/°C at 11 V; quantifies zener voltage drift with temperature for stability-critical designs |
Pinout & Package
Package: SOT23 - surface-mount plastic case, 3-terminal, 2.4 mm × 1.3 mm × 1.0 mm body, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal / cathode reference ground | Connected to circuit ground or lower potential node during zener operation; polarity must match schematic symbol |
| Cathode (Pin 2) | Zener breakdown terminal / regulated output node | Connected to input or rail being clamped; carries reverse current during regulation; marked side on package |
| No-Connect (Pin 3) | Internal die attach pad / mechanical support | Not electrically connected to die; serves thermal and mechanical anchoring function; may be left floating or grounded for thermal relief |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Enables tight zener voltage tolerance and repeatable breakdown characteristics across production lots |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control modules and infotainment power rails |
| Lead-free & halogen-free "Green" molding compound | Meets RoHS 3 (2015/863/EU) and automotive environmental compliance requirements without bromine/chlorine restrictions |
| SOT23 footprint compatibility | Supports high-density PCB layouts and standard reflow profiles used in consumer electronics manufacturing |
Applications
| USB Port Overvoltage Protection | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Clamps transient surges on USB VBUS line to prevent damage to downstream USB PHY or controller ICs. IC Role / Device Role / Timing Role: Passive voltage clamp placed between VBUS and GND, conducting only during overvoltage events exceeding 11 V. Use Value: Limits peak voltage to ≤11.6 V with <0.1 µA leakage at 8 V, preserving signal integrity and minimizing standby power loss. |
Use Scenario: Generates clean, temperature-stable reset threshold for 3.3 V or 5 V microcontrollers during power-up and brownout. IC Role / Device Role / Timing Role: Zener-based reference in RC reset generator, defining precise voltage trip point for reset assertion. Use Value: ±5% zener tolerance and +5.4 mV/°C TC enable predictable reset timing across -40°C to +125°C operating range. |
| Automotive Cabin Lighting Driver | Industrial Sensor Signal Conditioning |
Use Scenario: Stabilizes bias voltage for LED driver ICs in 12 V automotive lighting modules subject to load dump transients. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant 11 V rail for driver logic, absorbing excess current during voltage spikes. Use Value: AEC-Q101 qualification and 350 mW rating allow direct integration into harsh-environment lighting control boards. |
Use Scenario: Provides stable reference for op-amp-based bridge sensor amplifiers in pressure or temperature transducers. IC Role / Device Role / Timing Role: Low-noise voltage reference source feeding instrumentation amplifier gain-setting network. Use Value: 20 Ω zener impedance minimizes reference voltage modulation under varying load, improving ADC measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5240BS-7-F | 10 V nominal zener voltage, 15 Ω ZZT, same SOT23 package and 350 mW rating | Lower clamping voltage; better suited for 10 V rail protection vs. 11 V systems | Select when tighter 10 V regulation is required and +5.4 mV/°C TC is acceptable |
| BZX84-C11,115 | Same 11 V zener spec but packaged in 10,000-piece tape (part number suffix -13-F), no AEC-Q101 qualification | Lacks automotive qualification; intended for commercial-grade consumer electronics only | Choose for cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
Compared with MMBZ5240BS-7-F and BZX84-C11,115, the BZX84C11-7-F uniquely combines 11 V regulation, AEC-Q101 qualification, and 3,000-piece tape-and-reel packaging - making it optimal for automotive-tier production with traceable lot control and thermal performance validated for under-hood environments.
Availability
BZX84C11-7-F is available at Aetrix Electronics and suitable for USB port protection, microcontroller reset generation, and automotive cabin lighting requiring stable component supply across industrial and automotive production cycles.
Supply support for BZX84C11-7-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, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The BZX84 series belongs to Diodes' broad portfolio of general-purpose Zener diodes designed specifically for voltage regulation, reference, and overvoltage protection in high-volume consumer, computing, and automotive applications.
FAQ
What is the maximum reverse voltage this Zener diode can withstand before breakdown?
The BZX84C11-7-F has a nominal zener voltage of 11 V with a guaranteed range of 10.4 V to 11.6 V at 5 mA test current. Its absolute maximum reverse voltage before destructive breakdown exceeds 50 V, but sustained operation above 11.6 V will cause increasing current flow and thermal stress beyond its 350 mW rating.
Is this part suitable for use in automotive applications?
Yes - the BZX84C11-7-F is explicitly qualified to AEC-Q101 standards, confirming its reliability for automotive applications including engine control units, body electronics, and infotainment systems. Its green molding compound and lead-free plating also meet automotive environmental compliance requirements.
How does the temperature coefficient affect circuit performance?
The +5.4 mV/°C temperature coefficient means the zener voltage increases by approximately 5.4 mV per degree Celsius rise in junction temperature. In a 50°C ambient-to-junction rise, voltage shifts ~270 mV - a critical factor in precision references but acceptable for general-purpose clamping where ±5% tolerance is sufficient.
Can this Zener diode replace a 1N4740A in an existing design?
No - the 1N4740A is a through-hole 10 V, 1 W Zener in DO-41 package, while the BZX84C11-7-F is a 11 V, 350 mW SOT23 device. Differences in power rating, package, voltage, and thermal behavior require redesign of current-limiting resistors and PCB layout; it is not a drop-in replacement.
BZX84C11-7-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):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BZX84C11-7-F FAQ
1.How can I place an order for BZX84C11-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C11-7-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 BZX84C11-7-F reliable?
The price and inventory of BZX84C11-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C11-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C11-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C11-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C11-7-F?
BZX84C11-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C11-7-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 BZX84C11-7-F?
For technical support, including BZX84C11-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C11-7-F requirements.
6.How does Aetrix verify that BZX84C11-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C11-7-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 BZX84C11-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C11-7-F?
All BZX84C11-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C11-7-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 BZX84C11-7-F part is unused and in its original packaging.
Return procedure for BZX84C11-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C11-7-F Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
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