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Nexperia USA Inc. BZX84W-B2V4F
- Part No.:
- BZX84W-B2V4F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-B2V4F.pdf
- Description:
- DIODE ZENER 2.4V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:8,869
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Product details
Overview
BZX84W-B2V4F from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 2.4 V nominal Zener voltage at 5 mA, 275 mW total power dissipation, and 150 °C maximum junction temperature. It serves as a precision voltage reference or shunt regulator in low-power analog signal conditioning and power rail stabilization circuits.
For engineers reviewing the BZX84W-B2V4F datasheet, BZX84W-B2V4F pinout, BZX84W-B2V4F application, or BZX84W-B2V4F equivalent, key selection criteria include Zener voltage tolerance (±2 %), differential resistance (600 Ω max at IZ = 1 mA), reverse leakage (50 µA at VR = 1 V), thermal resistance (455 K/W), and SOT323 footprint compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its cathode-anode terminals under varying load current. Its 2.4 V nominal Zener voltage is specified at IZ = 5 mA with ±2 % tolerance, and exhibits a negative temperature coefficient of −1.6 mV/K at that bias point.
The device features a non-connected (n.c.) terminal (Pin 2), enabling simplified layout routing while maintaining mechanical stability in the SOT323 package. Thermal performance is characterized by Rth(j-a) = 455 K/W on FR4 PCB with single-sided copper, limiting continuous power handling to 275 mW at Tamb = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.4 V nominal at IZ = 5 mA; tight ±2 % tolerance ensures predictable regulation in precision reference designs. |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA; enables low-loss forward conduction during transient polarity events. |
| Total Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on standard FR4 PCB; defines maximum steady-state power handling without derating. |
| Differential Resistance (rdif) | ≤600 Ω at IZ = 1 mA; determines output impedance and regulation sensitivity to current variation. |
| Reverse Leakage Current (IR) | 50 µA at VR = 1 V; sets minimum operating current threshold before breakdown onset. |
| Junction Temperature (Tj) | −55 °C to +150 °C operating range; supports industrial ambient environments and short-term surge conditions. |
| Package | SOT323 (SC-70); 3-terminal leadless surface-mount package with 0.65 mm pitch, optimized for automated assembly and space-constrained boards. |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package with 3 leads: compact 2.2 mm × 1.35 mm footprint, 0.45 mm typical height, and tin-plated terminations compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node in shunt regulation configuration. |
| 2 | Not Connected (n.c.) | Electrically isolated; provides mechanical anchoring without circuit function-must not be soldered to trace or plane. |
| 3 | Cathode (K) | Reverse-biased terminal; connects to regulated voltage node and current-limiting resistor in standard Zener topology. |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tighter output voltage control than ±5 % variants, reducing need for post-regulation trimming in reference circuits. |
| Low differential resistance (≤600 Ω) | Minimizes output voltage shift under load current changes, improving regulation accuracy in dynamic supply rails. |
| SOT323 package with n.c. pin | Provides mechanical robustness and alignment stability during pick-and-place without adding parasitic capacitance or leakage paths. |
| 150 °C maximum junction temperature | Supports operation in thermally demanding environments such as enclosed industrial controllers or automotive under-hood modules (non-automotive qualified). |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 2.4 V reference for ADC voltage dividers or op-amp bias networks in battery-powered sensor nodes. IC Role / Device Role / Timing Role: Shunt voltage reference element establishing precise DC offset independent of input rail fluctuations. Use Value: ±2 % tolerance and low rdif ensure reference drift remains below 50 mV over 0–10 mA load range, meeting 12-bit ADC accuracy requirements. |
Use Scenario: Protecting microcontroller GPIO pins from ESD-induced transients exceeding 3.3 V logic thresholds. IC Role / Device Role / Timing Role: Fast-acting clamping diode diverting surge current away from sensitive inputs when Vin exceeds 2.4 V + VF. Use Value: 40 W non-repetitive peak reverse power rating allows absorption of 100 µs HBM-like pulses without degradation, preserving I/O integrity. |
| Signal Level Translation | Current Source Biasing |
|
Use Scenario: Shifting analog sensor outputs from 0–5 V range down to 0–2.4 V for interfacing with low-voltage comparators. IC Role / Device Role / Timing Role: Passive level-shifter using Zener forward drop and reverse breakdown to define upper and lower clipping limits. Use Value: 0.9 V forward voltage at 10 mA and sharp 2.4 V knee enable clean bi-directional clamping with <100 ns response to fast-rising edges. |
Use Scenario: Setting bias current for low-noise JFET amplifiers in audio front-end stages requiring stable 2.4 V gate-source voltage. IC Role / Device Role / Timing Role: Constant-current source formed by series resistor and Zener, delivering fixed IZ ≈ 5 mA to FET gate. Use Value: −1.6 mV/K temperature coefficient minimizes current drift over −40 °C to +85 °C, holding bias within ±3 % across full industrial range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-C2V4 | ±5 % Zener tolerance (vs. ±2 %), higher max reverse leakage (50 µA vs. same), identical package and power rating. | Suitable where cost sensitivity outweighs precision; less suitable for high-accuracy references or low-leakage bias networks. | Select when budget constraints dominate and 5 % regulation error is acceptable in final system tolerance stack-up. |
| MMSZ4678T1G | 2.4 V nominal, ±5 % tolerance, SOD-123 package (larger footprint), 500 mW Ptot, 300 Ω rdif max. | Better power handling and lower impedance, but incompatible with ultra-dense SOT323 layouts and requires board redesign. | Choose only if thermal margin or regulation stiffness is critical and PCB real estate permits SOD-123 placement. |
Compared with BZX84W-B2V4F, BZX84W-C2V4 trades precision for cost in identical form factor, while MMSZ4678T1G offers superior electrical performance at the expense of package compatibility-making BZX84W-B2V4F optimal for space-constrained, precision-shunt applications.
Availability
BZX84W-B2V4F is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical monitors, and IoT edge node power management requiring stable component supply with guaranteed long-term continuity.
Supply support for BZX84W-B2V4F 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in advanced packaging and automotive-grade qualification.
The BZX84W series belongs to Nexperia's general-purpose Zener diode product line, engineered for stable voltage regulation in cost-sensitive, space-constrained consumer and industrial electronics-not automotive-qualified.
FAQ
What is the maximum continuous reverse current this Zener can handle at 25 °C?
The BZX84W-B2V4F has no defined maximum continuous reverse current rating; instead, it is limited by total power dissipation. At 25 °C ambient, Ptot = 275 mW and VZ = 2.4 V imply a maximum sustainable Zener current of approximately 115 mA (275 mW ÷ 2.4 V), assuming negligible forward drop and ideal thermal conditions.
Can Pin 2 be left floating or must it be grounded?
Pin 2 is explicitly marked "n.c." (not connected) in the datasheet and has no internal connection. It must remain electrically unconnected-neither grounded nor tied to any net-as it serves only mechanical anchoring. Soldering it to a trace or plane may cause mechanical stress or unintended parasitic coupling.
How does the −1.6 mV/K temperature coefficient affect regulation accuracy over temperature?
At IZ = 5 mA, the −1.6 mV/K coefficient means VZ decreases by 1.6 mV per Kelvin rise. Over a 100 K range (−40 °C to +60 °C), this produces a total shift of −160 mV from nominal 2.4 V-a 6.7 % deviation. System-level compensation or tighter ambient control is required for sub-1 % regulation stability.
Is this part suitable for automotive applications?
No. The BZX84W-B2V4F is explicitly designated as non-automotive qualified in the revision history (Section 13). It lacks AEC-Q101 qualification, automotive-grade testing, and guaranteed extended temperature operation beyond 150 °C junction limit. For automotive use, Nexperia offers separate -Q qualified variants not covered by this part number.
BZX84W-B2V4F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84W
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.4 V
- Tolerance:
- ±2%
- Power - Max:
- 275 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:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84W-B2V4F FAQ
1.How can I place an order for BZX84W-B2V4F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-B2V4F 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 BZX84W-B2V4F reliable?
The price and inventory of BZX84W-B2V4F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-B2V4F is usually 5 days.
3.What payment methods are accepted for BZX84W-B2V4F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-B2V4F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-B2V4F?
BZX84W-B2V4F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-B2V4F 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 BZX84W-B2V4F?
For technical support, including BZX84W-B2V4F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-B2V4F requirements.
6.How does Aetrix verify that BZX84W-B2V4F is sourced from the original manufacturer or authorized distributors?
All BZX84W-B2V4F 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 BZX84W-B2V4F meets industry standards.
7.What is the process for return or replacement of BZX84W-B2V4F?
All BZX84W-B2V4F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-B2V4F, 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 BZX84W-B2V4F part is unused and in its original packaging.
Return procedure for BZX84W-B2V4F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-B2V4F 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
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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