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Diodes Incorporated BZX84C12Q-13-F
- Part No.:
- BZX84C12Q-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C12Q-13-F.pdf
- Description:
- DIODE ZENER 12V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:9,453
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Product details
Overview
BZX84C12Q-13-F from Diodes Incorporated is a 12 V, 350 mW surface-mount Zener diode in SOT23 package, rated for 5 mA test current with ±5% tolerance (11.4–12.7 V), 25 Ω maximum Zener impedance at 5 mA, and 0.1 µA maximum reverse leakage at 10 V. It serves as a precision voltage reference or overvoltage clamp in low-power analog and digital supply rails.
For engineers reviewing the BZX84C12Q-13-F datasheet, BZX84C12Q-13-F pinout, BZX84C12Q-13-F application, or BZX84C12Q-13-F equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (357 °C/W), AEC-Q101 qualification, RoHS/Green compliance, and SOT23 footprint compatibility in space-constrained PCB designs.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage regulation under varying load and temperature conditions. Its planar die construction ensures consistent breakdown characteristics and low leakage across production lots.
Designed for automated SMT assembly, it features matte tin-plated alloy 42 leads, UL 94V-0 molded plastic case, and moisture sensitivity level 1 - enabling reflow compatibility without baking. The device is qualified to AEC-Q101 for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12 V nominal, 11.4–12.7 V range at 5 mA - defines regulated output voltage under standard test conditions |
| Power Dissipation | 350 mW at ambient temperature - sets maximum continuous power handling on thermally unenhanced PCB |
| Zener Impedance (ZZT) | 25 Ω max at 5 mA - determines regulation stiffness and AC ripple rejection capability |
| Reverse Leakage (IR) | 0.1 µA max at 10 V - ensures minimal quiescent current draw in standby or high-impedance bias networks |
| Thermal Resistance (RθJA) | 357 °C/W - quantifies junction-to-ambient temperature rise per watt, critical for derating above 25°C |
| Temperature Coefficient | +6.0 mV/°C - indicates positive drift of VZ with temperature, used for compensation design |
| Package | SOT23 - 3-pin surface-mount outline with 2.4 mm × 1.3 mm footprint, compatible with standard pick-and-place equipment |
Pinout & Package
Package: SOT23 - small-outline transistor package with gull-wing leads, 0.95 mm lead pitch, and 0.4 mm typical lead thickness. Molded plastic body meets UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reverse-biased cathode connection point | Connected to lower potential node; current flows into cathode during regulation |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to higher potential node; establishes regulated voltage relative to anode |
| No Connection (Pin 3) | Internal die attach flag / mechanical support | Electrically isolated; must not be soldered to trace or plane to avoid thermal stress or shorting |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics requiring extended temperature and lifetime reliability |
| Green / Halogen-free construction | Contains <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - satisfies strict environmental compliance for EU and global OEM programs |
| Low Zener impedance (25 Ω) | Enables tight voltage regulation under dynamic load changes, suitable for feedback references in LDOs and DC-DC converters |
| Moisture Sensitivity Level 1 | Allows unlimited floor life before reflow; eliminates pre-bake requirement and reduces manufacturing overhead |
| Matte tin lead finish | Ensures reliable solder wetting and intermetallic formation with Pb-free and SnPb pastes per MIL-STD-202 Method 208 |
Applications
| Power Supply Voltage Reference | Overvoltage Clamp Circuit |
|---|---|
|
Use Scenario: Providing stable 12 V reference for ADC biasing or op-amp offset trimming in industrial sensor signal conditioning modules. IC Role / Device Role / Timing Role: Precision shunt voltage reference maintaining fixed potential across high-impedance nodes. Use Value: Delivers ±5% voltage accuracy and <25 Ω dynamic impedance to minimize reference drift under varying load currents up to 5 mA. |
Use Scenario: Protecting microcontroller I/O pins from transient surges on 12 V CAN bus interface lines in automotive telematics units. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting voltage excursions above 12.7 V to prevent ESD-induced latch-up. Use Value: Responds within nanoseconds to transients while sustaining 0.1 µA leakage at operating voltage - preserving system sleep current budget. |
| Low-Power Battery Monitor | LED Current Regulation |
|
Use Scenario: Monitoring 12 V lead-acid battery health in solar charge controllers by comparing Zener-regulated voltage against ADC threshold. IC Role / Device Role / Timing Role: Stable voltage threshold generator enabling accurate state-of-charge estimation at low quiescent current. Use Value: Maintains 12 V reference with only 0.1 µA reverse leakage at 10 V - extending battery runtime in always-on monitoring circuits. |
Use Scenario: Setting constant current for indicator LEDs in HVAC control panels powered from 12 V rail. IC Role / Device Role / Timing Role: Shunt regulator establishing fixed voltage drop across current-setting resistor in LED string driver. Use Value: Provides predictable 12 V regulation with +6.0 mV/°C tempco - enabling simple thermal compensation in ambient-temperature-varying environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5242B-7-F | 12 V nominal, 225 mW rating, 30 Ω ZZT, SOT23 package, no AEC-Q101 qualification | Limited to commercial-grade consumer electronics; unsuitable for automotive or industrial temperature cycling | Select when cost sensitivity outweighs reliability requirements and thermal derating margin is sufficient |
| BZX84-C12-E3-08 | 12 V nominal, 350 mW, 25 Ω ZZT, SOT23, AEC-Q101 qualified, but packaged in 8,000-piece tape (not 10,000) | Identical electrical and reliability specs; differs only in packaging quantity and reel marking convention | Prefer for legacy procurement systems aligned with Vishay's part numbering and logistics infrastructure |
Compared with MMBZ5242B-7-F and BZX84-C12-E3-08, BZX84C12Q-13-F offers identical Zener performance and AEC-Q101 qualification but ships in 10,000-piece reels - optimizing line-side inventory for high-volume automotive SMT lines while ensuring full regulatory compliance.
Availability
BZX84C12Q-13-F is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial PLC I/O modules, and medical diagnostic power supplies requiring stable component supply with AEC-Q101 validation and green material compliance.
Supply support for BZX84C12Q-13-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, manufacturing, and sales operations across Asia, Europe, and the Americas.
This device belongs to the BZX84C series of automotive-qualified Zener diodes designed specifically for precision voltage regulation and transient protection in harsh-environment electronics where reliability, consistency, and regulatory compliance are mandatory.
FAQ
What is the maximum power dissipation for BZX84C12Q-13-F at 70°C ambient?
At 70°C ambient, the device must be derated from its 350 mW maximum. Using the 357 °C/W thermal resistance and 150°C max junction temperature, the allowable power is (150 − 70) / 357 = 0.224 W, or 224 mW. This aligns with the linear derating curve shown in Figure 1 of DS18001 Rev. 33-2.
Is BZX84C12Q-13-F suitable for use in a 12 V automotive battery monitoring circuit?
Yes - its 12 V nominal Zener voltage, AEC-Q101 qualification, −65°C to +150°C operating range, and 0.1 µA reverse leakage at 10 V make it ideal for direct connection to vehicle battery rails. It maintains regulation stability across cold-crank (−40°C) and under-hood hot-soak (+125°C) conditions.
Does the "Q" suffix indicate automotive grade, and how is it verified?
Yes - the "Q" denotes AEC-Q101 qualification. Diodes Incorporated validates this through standardized stress tests including HTOL (high-temperature operating life), TCT (temperature cycling), and ESD (HBM ≥ 2 kV). Full qualification data is documented in their AEC-Q101 certificate, accessible via their quality portal.
Can BZX84C12Q-13-F replace BZX84C12LT1G in an existing design?
Yes - both are 12 V, 350 mW SOT23 Zeners with identical electrical specs and AEC-Q101 qualification. The only differences are packaging (10,000 vs. 3,000/reel) and date-code marking format; no layout or schematic changes are required for drop-in replacement.
BZX84C12Q-13-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):
- 12 V
- Tolerance:
- ±5.42%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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
BZX84C12Q-13-F FAQ
1.How can I place an order for BZX84C12Q-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C12Q-13-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 BZX84C12Q-13-F reliable?
The price and inventory of BZX84C12Q-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C12Q-13-F is usually 5 days.
3.What payment methods are accepted for BZX84C12Q-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C12Q-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C12Q-13-F?
BZX84C12Q-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C12Q-13-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 BZX84C12Q-13-F?
For technical support, including BZX84C12Q-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C12Q-13-F requirements.
6.How does Aetrix verify that BZX84C12Q-13-F is sourced from the original manufacturer or authorized distributors?
All BZX84C12Q-13-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 BZX84C12Q-13-F meets industry standards.
7.What is the process for return or replacement of BZX84C12Q-13-F?
All BZX84C12Q-13-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C12Q-13-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 BZX84C12Q-13-F part is unused and in its original packaging.
Return procedure for BZX84C12Q-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C12Q-13-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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Diodes Incorporated
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MM5Z5V1ST1G
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Diodes Incorporated
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Diodes Incorporated
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