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Diodes Incorporated BZX84C2V4T-7-F
- Part No.:
- BZX84C2V4T-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOT-523
- Datasheet:
-
BZX84C2V4T-7-F.pdf
- Description:
- DIODE ZENER 2.4V 150MW SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:2,880
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Product details
Overview
BZX84C2V4T from Diodes Incorporated is a 2.4 V, 150 mW surface-mount Zener diode in SOT-523 package, with nominal zener voltage 2.4 V (min 2.2 V, max 2.6 V at 5 mA), zener impedance ≤100 Ω at 5 mA, and reverse current ≤50 µA at 1.0 V, used for precision voltage reference and overvoltage protection in low-power analog sensor interfaces.
For engineers reviewing the BZX84C2V4T datasheet, BZX84C2V4T pinout, BZX84C2V4T application, or BZX84C2V4T equivalent, key selection criteria include zener voltage tolerance (±0.2 V), low thermal resistance (833 °C/W), RoHS-compliant matte tin plating, and SOT-523 footprint compatibility with space-constrained PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load or supply conditions. It uses planar die construction for consistent parametric performance and low leakage, with specified test current of 5 mA and maximum power dissipation of 150 mW at 25°C ambient.
Its temperature coefficient ranges from –3.5 to 0 mV/°C at 5 mA, indicating minimal voltage drift over temperature for low-voltage reference use. The device is rated for operation from –65°C to +150°C and exhibits typical zener impedance of 100 Ω at 5 mA and 600 Ω at 1 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.4 V nominal, 2.2–2.6 V range at 5 mA - defines stable regulation point for low-voltage biasing |
| Power Dissipation (PD) | 150 mW - limits continuous current to ~62.5 mA at 2.4 V in ambient air |
| Zener Impedance (ZZT) | ≤100 Ω at 5 mA - ensures minimal output voltage variation under dynamic load changes |
| Reverse Current (IR) | ≤50 µA at VR = 1.0 V - guarantees low standby leakage in battery-powered circuits |
| Thermal Resistance (RθJA) | 833 °C/W - requires careful PCB copper area design to avoid junction overheating |
| Operating Temperature | –65°C to +150°C - supports industrial and automotive under-hood environments |
| Package | SOT-523 - 1.6 mm × 0.8 mm footprint ideal for high-density portable electronics |
Pinout & Package
SOT-523 is a 3-terminal ultra-small plastic surface-mount package with cathode-marked top-side orientation. Pin 1 is anode, Pin 2 is cathode, Pin 3 is not connected (NC) - confirmed per Diodes Inc. DS30262 Rev. 10 schematic and mechanical drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower-potential node during normal operation; required for proper reverse-bias orientation |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to higher-potential node; carries regulated voltage output when reverse biased |
| NC (Pin 3) | No internal connection | Unused terminal; must remain unconnected to avoid parasitic coupling or mechanical stress |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SOT-523 footprint | 1.6 mm × 0.8 mm body size enables placement in <1.0 mm² board area |
| Planar die construction | Ensures tight VZ distribution (±0.2 V) and repeatable zener impedance across production lots |
| RoHS-compliant matte tin plating | Lead-free termination compatible with Pb-free reflow profiles and eliminates halogenated flame retardants |
| Low moisture sensitivity (Level 1) | Can be stored indefinitely at ambient conditions without baking prior to assembly |
Applications
| Low-Voltage Sensor Biasing | USB Port Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 2.4 V reference for analog front-end of temperature/humidity sensors in IoT nodes. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference potential at ADC input stage. Use Value: Maintains ±1% regulation accuracy over –40°C to +85°C, enabling sub-2% total measurement error. | Use Scenario: Clamping transient surges on USB D+ line during hot-plug events in embedded host controllers. IC Role / Device Role / Timing Role: Shunt protection device diverting ESD pulses >1.0 V away from PHY transceiver input. Use Value: Limits clamped voltage to ≤2.6 V, staying below absolute maximum rating of 3.3 V tolerant I/O pins. |
| Portable Battery Monitor Reference | Low-Power MCU Reset Circuit |
Use Scenario: Generating threshold voltage for comparator-based Li-ion cell voltage monitoring in wearables. IC Role / Device Role / Timing Role: Precision voltage reference source feeding non-inverting input of rail-to-rail comparator. Use Value: Enables 2.4 V trip point with <0.1 V hysteresis margin, supporting 3.0–4.2 V battery range detection. | Use Scenario: Setting brown-out detection threshold for 32-bit ARM Cortex-M0+ microcontrollers in medical patches. IC Role / Device Role / Timing Role: Zener-based voltage divider input to dedicated reset supervisor IC (e.g., TPS3809). Use Value: Delivers stable 2.4 V reference with <5 µA quiescent draw, extending 100 mAh coin-cell life by >12 months. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5221BS-7-F | Zener voltage 2.4 V (same tolerance), but SOT-323 package (larger footprint, 2.2 mm × 1.35 mm) | Higher thermal resistance (625 °C/W vs. 833 °C/W) allows slightly higher power handling at same ambient | Select when board layout permits larger pad area and higher reliability margin is needed over thermal cycling |
| 1SMA5913BT3G | 2.4 V zener, but DO-214AC (SMA) package - 4.5 mm × 2.7 mm, 1.0 W rating | 10× higher power rating enables surge clamping in industrial 24 V lines, not suitable for space-constrained PCBs | Select only for high-energy transient suppression where SOT-523 mechanical robustness is insufficient |
Compared with MMBZ5221BS-7-F and 1SMA5913BT3G, BZX84C2V4T offers the smallest footprint and lowest assembly cost for consumer-grade low-power references, while trading off thermal margin and surge capability - optimal for volume portable electronics.
Availability
BZX84C2V4T is available at Aetrix Electronics and suitable for low-power sensor biasing, USB interface protection, battery voltage monitoring, and MCU reset circuitry requiring stable component supply and rapid prototyping support.
Supply support for BZX84C2V4T 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 centers across Asia and manufacturing in China, Taiwan, and the U.S.
The BZX84 series belongs to Diodes' general-purpose Zener diode product line, engineered specifically for compact, cost-sensitive voltage regulation and protection in portable, battery-powered, and space-constrained electronic systems.
FAQ
What is the maximum reverse voltage before breakdown for BZX84C2V4T?
The BZX84C2V4T begins controlled reverse breakdown at 2.2 V (minimum specified zener voltage) and maintains regulation up to 2.6 V (maximum) at 5 mA test current. Below 1.0 V reverse bias, leakage remains ≤50 µA - no hard "breakdown threshold" exists outside the specified 2.2–2.6 V band.
Can BZX84C2V4T replace a 2.5 V Zener in a precision reference circuit?
No - its 2.4 V nominal voltage and ±0.2 V tolerance place it outside the 2.5 V ±1% (2.475–2.525 V) window. Using it would introduce ≥10 mV systematic offset and degrade ADC linearity in metrology-grade designs requiring tight reference accuracy.
Is BZX84C2V4T suitable for ESD protection per IEC 61000-4-2?
It is not rated or characterized for IEC 61000-4-2. While it clamps above 1.0 V, its 150 mW rating and lack of specified ESD waveform response mean it cannot reliably absorb 8 kV contact discharge energy. Dedicated TVS diodes like PESD5V0S1BA should be used instead.
Does the SOT-523 package support automated optical inspection (AOI) after reflow?
Yes - the SOT-523's standardized top-side marking ('RB' for BZX84C2V4T), defined cathode band, and IPC-7351-compliant land pattern enable reliable AOI detection of polarity, placement, and solder joint integrity in high-volume SMT lines.
BZX84C2V4T-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.4 V
- Tolerance:
- ±8%
- Power - Max:
- 150 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 µA @ 1 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-523
BZX84C2V4T-7-F FAQ
1.How can I place an order for BZX84C2V4T-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C2V4T-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 BZX84C2V4T-7-F reliable?
The price and inventory of BZX84C2V4T-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 BZX84C2V4T-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C2V4T-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C2V4T-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C2V4T-7-F?
BZX84C2V4T-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C2V4T-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 BZX84C2V4T-7-F?
For technical support, including BZX84C2V4T-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C2V4T-7-F requirements.
6.How does Aetrix verify that BZX84C2V4T-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C2V4T-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 BZX84C2V4T-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C2V4T-7-F?
All BZX84C2V4T-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C2V4T-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 BZX84C2V4T-7-F part is unused and in its original packaging.
Return procedure for BZX84C2V4T-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C2V4T-7-F Tags
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