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VB84C2V4 Product details
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The VB84C2V4 is a high-performance zener diode optimized for low-voltage reference and clamping protection applications. It features a compact SOT-23-3 package, delivering an excellent balance between voltage accuracy, power consumption, and board space utilization. With a 2.4 V regulated voltage (±5% tolerance) and a 250 mW dissipation power rating, this diode is an ideal choice for 2.5 V logic-level references, low-voltage power supply protection, and signal clamping applications – particularly suitable for portable electronic devices and consumer products where space constraints and cost sensitivity are paramount.
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Product parameter：
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds2.5 | Rds4.5 | Rds10 | Technology |
|---|---|---|---|---|---|---|---|---|---|
| SOT23-3 | Zener |
| VB Package | Configuration | VCE | VGE | VGEth(V) | VCEsat15V | ICE | Technology |
|---|---|---|---|---|---|---|---|
| SOT23-3 | Zener | 900mV @ 10mA | 200mA | 50μA @ 1V | 450pF |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds18 | Technology |
|---|---|---|---|---|---|---|---|
| SOT23-3 | Zener |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds6 | Technology |
|---|---|---|---|---|---|---|---|
| SOT23-3 | Zener |
| VB Package | Polarity | Vz / VR | Pd | VF | IF | IR | Cd | Type |
|---|---|---|---|---|---|---|---|---|
| SOT23-3 | Zener | Vz = 2.4V ±5% | 250mW | 900mV @ 10mA | 200mA | 50μA @ 1V | 450pF | Diode |
Vz = 2.4 V ±5% – Provides a stable 2.4 V reference voltage that can be used directly as an ADC reference source or comparator threshold; compatible with 2.5 V logic systems; the ±5% tolerance meets the requirements of most non-precision control applications, eliminating the need for additional calibration and simplifying the design process.
VF = 900 mV @ IF = 10 mA: The forward voltage drop is comparable to that of a standard silicon diode; beyond reverse breakdown, it can also serve as a forward clamping or reverse-connection protection component, thereby enhancing the versatility of the device.
IF = 200 mA: The forward current handling capability is ample, making it suitable even for use as a standard rectifier diode to meet low-current applications; in voltage-regulated mode, it is recommended to limit the operating current to below 30 mA to ensure thermal stability and long-term reliability.
IR = 50 μA @ VR = 1 V: The low-voltage reverse bias leakage current is kept within the microampere range, resulting in minimal impact on battery-powered devices and making it suitable for applications sensitive to standby power consumption.
Pd = 250 mW: This device can handle a power dissipation of 250 mW in an SOT-23 package, combined with a 40 W non-repetitive peak surge withstand capability (PZSM), enabling it to withstand continuous light overloads as well as absorb transient high-voltage pulses, thereby enhancing system robustness.
Cd = 450 pF: This moderate junction capacitance makes it suitable for low-frequency (＜1 MHz) filtering, decoupling, or gradual signal clamping; for protecting high-speed data lines (e.g., USB 2.0), use a TVS diode with a lower capacitance value.
Encapsulation: SOT-23-3 – a compact three-pin design with low parasitic inductance, ideal for high-density surface-mount applications; operating temperature range of-65°C to 150°C ensures compatibility with harsh environments and guarantees long-term stable performance.
Domain and module applications：
Low-voltage reference source – provides a 2.4 V reference voltage for the MCU's internal ADC, comparator, or operational amplifier; this voltage can be scaled to commonly used logic levels (e.g., 1.2 V, 3.3 V) using a resistor-based voltage divider, thereby simplifying the power supply monitoring circuit.
5V/3.3V system overvoltage clamping: By connecting the VB84C2V4 in reverse between the power supply and ground, voltage spikes can be prevented from damaging downstream logic devices; its 2.4V breakdown voltage is precisely below the 3.3V I/O tolerance limit, providing effective protection for sensitive inputs.
Discrete low-voltage regulator: When connected in series with a current-limiting resistor, it can provide a stable 2.4 V supply for low-current (<20 mA) analog circuits or LED indicator lights – at a cost significantly lower than that of an LDO.
Signal Level Conversion Auxiliary: By leveraging the Zener diode's breakdown characteristic, this component can clamp a 5V signal level below 2.4V; when combined with a pull-up resistor, it enables a 5V → 2.4V level conversion, making it suitable for interface compatibility between legacy and new-generation chips.
Battery Protection Board: In a single-cell lithium-ion battery protection circuit, the 2.4 V voltage can serve as the under-voltage detection threshold; when combined with a comparator, it enables precise shutdown functionality, thereby extending the battery life.
Consumer Electronics Control Module: Its compact package size and high cost-effectiveness make it an ideal choice for a wide range of applications—including smart home systems, electric toys, and charger feedback loops—while saving PCB space and reducing BOM costs.
The VB84C2V4 offers a stable 2.4 V reference voltage and 250 mW power dissipation capability in a compact SOT-23 package, delivering an excellent balance between performance, size, and cost. Although its 450 pF junction capacitance limits high-frequency applications, it performs exceptionally well in low-frequency power supply protection and reference circuits. For projects requiring a reliable, cost-effective, and user-friendly low-voltage zener diode, the VB84C2V4 is undoubtedly a highly competitive choice. For applications demanding higher accuracy or lower leakage current specifications, consider pairing this device with a voltage reference IC or an ultra-low leakage current series; however, in typical designs, this model is sufficient to meet the majority of low-voltage voltage regulation and clamping requirements.
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