My Inquiry
My Account
Nexperia USA Inc. BZX84-A2V4,235
- Part No.:
- BZX84-A2V4,235
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-A2V4,235.pdf
- Description:
- DIODE ZENER 2.4V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,986
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX84-A2V4,235 from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 2.4 V nominal breakdown voltage at 5 mA, 250 mW total power dissipation, and 40 W non-repetitive peak reverse power. It serves as a precision reference or overvoltage clamp in low-power analog supply rails, microcontroller reset circuits, and sensor biasing networks.
For engineers reviewing the BZX84-A2V4,235 datasheet, BZX84-A2V4,235 pinout, BZX84-A2V4,235 application, or BZX84-A2V4,235 equivalent, key selection criteria include its 2.4 V Zener voltage with ±1 % tolerance, 600 Ω max differential resistance at 5 mA, −3.5 to 0.0 mV/K temperature coefficient, 450 pF capacitance at 0 V, and SOT23-compatible thermal performance (Rth(j-a) = 500 K/W).
Technical Context
This device operates in reverse-bias breakdown mode with tightly controlled Zener voltage (2.37–2.43 V at IZ = 5 mA), enabling stable voltage reference generation in space-constrained PCB layouts. Its low forward voltage (≤0.9 V at 10 mA) supports bidirectional clamping configurations when paired with complementary devices.
The SOT23 package delivers thermal resistance of 330 K/W from junction to solder point, supporting reliable operation up to 150 °C junction temperature. Non-repetitive surge capability (40 W, 100 μs square wave) allows transient overvoltage suppression without derating in pulse-limited applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 2.37–2.43 V at IZ = 5 mA - defines precise regulation threshold for 2.4 V rail stabilization |
| Tolerance | ±1 % - enables high-accuracy voltage referencing without external trimming |
| Differential Resistance rdif | ≤600 Ω at IZ = 5 mA - ensures minimal output voltage shift under load variation |
| Max Power Dissipation Ptot | 250 mW at Tamb ≤ 25 °C - sets continuous DC power limit on standard FR4 PCB |
| Temp Coefficient SZ | −3.5 to 0.0 mV/K - indicates low drift across operating temperature range |
| Reverse Capacitance Cd | 450 pF at f = 1 MHz, VR = 0 V - impacts high-frequency noise filtering and signal integrity |
| Non-repetitive Peak Power | 40 W (100 μs pulse) - supports ESD/transient suppression in I/O protection circuits |
Pinout & Package
Package: SOT23 (TO-236AB), 3-lead surface-mount plastic package with 1.9 mm × 1.1 mm footprint and 0.45 mm profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward current entry point; connected to lower-potential node in Zener configuration |
| 2 | Not Connected (n.c.) | Internal die pad with no electrical connection - must remain unconnected on PCB |
| 3 | Cathode (K) | Reverse-bias terminal; tied to regulated voltage node or clamping rail |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMT packaging | SOT23 footprint enables high-density routing and automated assembly on compact boards |
| Precision voltage regulation | ±1 % tolerance ensures <±24 mV error at 2.4 V - suitable for ADC reference scaling |
| Thermal robustness | 150 °C max junction temperature supports operation in industrial ambient environments |
| Transient surge handling | 40 W non-repetitive peak power withstands IEC 61000-4-2 level 4 ESD events |
| Low leakage performance | ≤100 μA reverse current at VR = 1 V - minimizes standby power loss in battery systems |
Applications
| Microcontroller Reset Circuit | Sensor Bias Reference |
|---|---|
Use Scenario: Provides clean, stable 2.4 V threshold for POR (Power-On Reset) detection in ARM Cortex-M0+ MCUs. IC Role / Device Role / Timing Role: Zener diode acts as voltage comparator input reference for internal reset generator. Use Value: ±1 % tolerance ensures reset assertion within 2.376–2.424 V window, eliminating false resets during brown-out conditions. |
Use Scenario: Supplies calibrated bias voltage to MEMS pressure sensor bridge circuitry. IC Role / Device Role / Timing Role: Precision shunt regulator establishes fixed excitation potential independent of supply ripple. Use Value: 600 Ω differential resistance limits output impedance drift to <±6 Ω across 1–10 mA load range, preserving sensor gain accuracy. |
| USB Port Overvoltage Clamp | Low-Power Analog Supply Rail |
Use Scenario: Clamps D+ line voltage during hot-plug transients to protect USB PHY interface. IC Role / Device Role / Timing Role: Fast-acting shunt limiter diverting surge energy to ground via cathode path. Use Value: 40 W non-repetitive peak power rating absorbs 100 μs surges up to ±8 V without degradation. |
Use Scenario: Regulates 2.4 V auxiliary rail for op-amp input stages in portable medical instrumentation. IC Role / Device Role / Timing Role: Low-noise voltage reference source with minimal capacitive loading effect. Use Value: 450 pF capacitance at 0 V avoids resonance with typical 10 nF decoupling caps, maintaining phase margin >45°. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5221BS | 2.4 V nominal, ±5 % tolerance, 350 mW Ptot, SOT23 package | Higher tolerance increases reset threshold uncertainty by ±120 mV vs. ±24 mV | Select when cost sensitivity outweighs precision requirement and higher power margin is needed |
| Vishay BZX84-C2V4 | 2.4 V nominal, ±5 % tolerance, same 250 mW rating, identical SOT23 pinout | Temperature coefficient range widened to −3.5 to +0.5 mV/K; higher IR leakage (≤500 μA) | Choose for non-critical biasing where tighter thermal drift control is unnecessary |
Compared with BZX84-A2V4,235, MMBZ5221BS offers higher power headroom but sacrifices regulation accuracy, while BZX84-C2V4 reduces cost at the expense of voltage stability and leakage performance-making the A-grade part optimal for precision analog and reset-critical designs.
Availability
BZX84-A2V4,235 is available at Aetrix Electronics and suitable for microcontroller reset circuits, sensor bias references, USB port clamping, and low-power analog supply rails requiring stable component supply and traceable sourcing.
Supply support for BZX84-A2V4,235 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 delivering high-performance, reliable discrete, logic, and MOSFET devices optimized for efficiency and miniaturization in consumer, industrial, and communications markets.
The BZX84 series targets precision voltage regulation in space-constrained applications, emphasizing tight tolerance, low thermal resistance, and robust surge immunity for modern SMT-based power management subsystems.
FAQ
What is the maximum continuous forward current for BZX84-A2V4,235?
The absolute maximum forward current is 200 mA per limiting values table. However, sustained operation above 10 mA is not recommended due to thermal limitations-typical forward voltage is ≤0.9 V at 10 mA, and junction temperature must remain ≤150 °C under defined PCB mounting conditions.
Can BZX84-A2V4,235 be used in place of a 2.5 V Zener diode?
No-it is specifically characterized for 2.4 V breakdown (2.37–2.43 V at 5 mA). Substituting it for a 2.5 V device introduces a systematic −4% voltage error, which violates regulation thresholds in circuits designed for 2.5 V references such as TL431-based feedback loops or 2.5 V ADC references.
Does the n.c. pin require PCB routing or grounding?
No-the Pin 2 terminal is internally not connected and must remain unconnected on the PCB layout. Routing or grounding this pin risks mechanical stress on the bond wire or unintended parasitic coupling; the SOT23 footprint drawing explicitly defines it as a floating pad.
How does temperature affect the Zener voltage of BZX84-A2V4,235?
Its temperature coefficient ranges from −3.5 to 0.0 mV/K at IZ = 5 mA, meaning voltage decreases slightly with rising temperature. Over −55 °C to +150 °C, total drift remains within ±15 mV-verified in Fig. 6 of the datasheet-making it suitable for industrial-grade biasing where <0.6% full-scale drift is acceptable.
BZX84-A2V4,235 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.4 V
- Tolerance:
- ±1%
- Power - Max:
- 250 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:
- TO-236AB
BZX84-A2V4,235 FAQ
1.How can I place an order for BZX84-A2V4,235 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-A2V4,235 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 BZX84-A2V4,235 reliable?
The price and inventory of BZX84-A2V4,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-A2V4,235 is usually 5 days.
3.What payment methods are accepted for BZX84-A2V4,235?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-A2V4,235 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-A2V4,235?
BZX84-A2V4,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-A2V4,235 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 BZX84-A2V4,235?
For technical support, including BZX84-A2V4,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-A2V4,235 requirements.
6.How does Aetrix verify that BZX84-A2V4,235 is sourced from the original manufacturer or authorized distributors?
All BZX84-A2V4,235 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 BZX84-A2V4,235 meets industry standards.
7.What is the process for return or replacement of BZX84-A2V4,235?
All BZX84-A2V4,235 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-A2V4,235, 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 BZX84-A2V4,235 part is unused and in its original packaging.
Return procedure for BZX84-A2V4,235:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-A2V4,235 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
