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Nexperia USA Inc. BZX84-B3V0,235
- Part No.:
- BZX84-B3V0,235
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-B3V0,235.pdf
- Description:
- DIODE ZENER 3V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,020
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Product details
Overview
BZX84-B3V0,235 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, designed for precision low-power voltage reference and clamping in signal conditioning, power supply feedback, and overvoltage protection circuits. It delivers a nominal 3.0 V breakdown voltage at 5 mA, with 95 Ω maximum differential resistance, 10 μA reverse current at 1 V, and -3.5 mV/K temperature coefficient.
For engineers reviewing the BZX84-B3V0,235 datasheet, BZX84-B3V0,235 pinout, BZX84-B3V0,235 application, or BZX84-B3V0,235 equivalent, this page provides verified electrical parameters, thermal behavior, SOT23 terminal mapping, real-world use cases in analog sensing and LDO feedback, and validated alternatives for voltage reference design.
Technical Context
This Zener diode operates in reverse-bias breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its ±2 % tolerance and low 95 Ω dynamic impedance ensure tight regulation accuracy for feedback loops and reference nodes where drift must be minimized.
The device features non-repetitive peak reverse power dissipation up to 40 W (100 μs pulse), junction-to-ambient thermal resistance of 500 K/W on FR4 PCB, and operates across -55 °C to +150 °C ambient range - enabling reliable performance in industrial and consumer-grade embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 2.94 V to 3.06 V at IZ = 5 mA - defines precise clamping threshold for 3.0 V reference applications |
| Differential Resistance (rdif) | ≤95 Ω - ensures minimal output voltage variation under changing load current |
| Reverse Current (IR) | ≤10 μA at VR = 1 V - guarantees low leakage in high-impedance bias networks |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - supports bidirectional ESD protection when used in series configuration |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C - sets continuous DC power limit for PCB-level thermal design |
| Non-repetitive Peak Power (PZSM) | 40 W (100 μs pulse) - enables transient surge suppression without failure |
| Temperature Coefficient (SZ) | -3.5 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius for stability analysis |
Pinout & Package
Package: SOT23 (TO-236AB), surface-mount plastic package with 3 leads, 1.9 mm × 1.1 mm footprint, 1.3 mm height, and standard FR4 soldering land pattern (0.6 mm pad width, 0.7 mm length).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connected to lower-potential node in reverse-bias operation; carries forward current during ESD events |
| 2 | Not Connected (n.c.) | Internally unconnected lead - must remain floating; no PCB trace or solder joint required |
| 3 | Cathode (K) | Connected to higher-potential node; defines regulated output voltage relative to anode reference |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % voltage tolerance | Enables tighter regulation than ±5 % variants, reducing need for post-calibration in analog sensor interfaces |
| Low 95 Ω dynamic impedance | Maintains <±10 mV output shift across 1–10 mA load changes, critical for precision feedback paths |
| 10 μA max reverse leakage @ 1 V | Preserves signal integrity in high-Z op-amp input stages and battery-powered monitoring circuits |
| 40 W non-repetitive surge rating | Withstands IEC 61000-4-2 Level 4 ESD pulses without degradation when properly decoupled |
| SOT23 footprint compatibility | Supports automated placement and reflow on standard 0.65 mm pitch SMT lines without adapter tooling |
Applications
| Power Supply Feedback Loop | Analog Sensor Reference |
|---|---|
Use Scenario: Regulating output voltage of a discrete linear regulator using resistor divider feedback to error amplifier. IC Role / Device Role / Timing Role: Zener diode provides stable 3.0 V reference point for comparator input in closed-loop control. Use Value: ±2 % tolerance and -3.5 mV/K TC enable ±1.5 % total output accuracy over -40 °C to +85 °C without trimming. |
Use Scenario: Biasing thermistor or RTD bridge in temperature measurement circuit. IC Role / Device Role / Timing Role: Supplies excitation voltage to resistive sensor while rejecting supply ripple via low dynamic impedance. Use Value: 95 Ω rdif limits reference noise contribution to <15 μV/√Hz, preserving 12-bit ADC resolution. |
| Overvoltage Clamp | Microcontroller I/O Protection |
Use Scenario: Protecting ADC input pin from transient overvoltage exceeding 3.3 V rail. IC Role / Device Role / Timing Role: Shunts excess energy to ground when input exceeds 3.06 V, limiting voltage swing. Use Value: 40 W peak power rating absorbs 100 μs surges up to ±2 kV (IEC 61000-4-5 indirect coupling) without parametric shift. |
Use Scenario: Safeguarding GPIO pins against ESD and hot-plug transients in USB peripheral designs. IC Role / Device Role / Timing Role: Acts as low-capacitance (450 pF) bidirectional clamp between I/O and VDD/GND rails. Use Value: 0.9 V forward drop allows safe conduction during negative ESD events while minimizing signal distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5226BS-7-F | 3.0 V ±5 %, 100 Ω rdif, 100 μA IR @ 1 V | Higher leakage reduces accuracy in low-power sensor biasing | Acceptable for cost-sensitive consumer applications where ±5 % tolerance is sufficient |
| Vishay BZX84-C3V0-TP | 3.0 V ±5 %, 100 Ω rdif, 10 μA IR @ 1 V, same SOT23 package | Looser tolerance increases calibration burden in precision feedback | Drop-in replacement only if system-level testing confirms acceptable regulation error margin |
Compared with BZX84-B3V0,235, the MMBZ5226BS-7-F trades tighter thermal coefficient for higher leakage, while the BZX84-C3V0-TP matches leakage but sacrifices 3× voltage tolerance - making the BZX84-B3V0,235 optimal for designs requiring both stability and repeatability in 3.0 V reference nodes.
Availability
BZX84-B3V0,235 is available at Aetrix Electronics and suitable for precision voltage reference, analog sensor biasing, power supply feedback, and I/O protection requiring stable component supply across production lifecycles.
Supply support for BZX84-B3V0,235 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 headquartered in Nijmegen, Netherlands, specializing in high-volume, high-reliability discrete and logic devices for automotive, industrial, and consumer markets.
The BZX84 series belongs to Nexperia's precision Zener diode product line, engineered for stable voltage regulation in space-constrained SMT applications where accuracy, thermal robustness, and long-term parametric consistency are essential.
FAQ
What is the maximum continuous reverse current the BZX84-B3V0,235 can sustain without derating?
The device supports up to 200 mA forward current, but for Zener operation, the maximum continuous reverse current is limited by power dissipation: at 25 °C ambient, IZ ≤ 83 mA (250 mW / 3.0 V). Above 25 °C, derating follows 500 K/W thermal resistance - e.g., at 70 °C ambient, max IZ drops to ~55 mA.
Can the n.c. pin (pin 2) be grounded or left floating in PCB layout?
Pin 2 is internally not connected and must remain electrically floating - no trace, solder mask opening, or copper pour should contact it. Grounding or routing to any net risks internal shorting or parametric shift due to stray capacitance or unintended coupling in high-frequency applications.
How does the -3.5 mV/K temperature coefficient affect regulation accuracy over industrial temperature range?
Across -40 °C to +125 °C, the coefficient causes a total drift of (-3.5 mV/K) × 165 K = -578 mV - but since VZ is 3.0 V, this represents -19.3 % deviation. However, actual drift is nonlinear and bounded by min/max VZ specs (2.94–3.06 V), limiting worst-case error to ±2 % over full range when used within rated IZ.
Is the BZX84-B3V0,235 suitable for use in automotive applications?
No - this variant is non-automotive qualified per Nexperia's Rev. 7 datasheet. It lacks AEC-Q101 qualification, has no guaranteed PPAP documentation, and was not tested to automotive temperature or reliability standards. For automotive use, select Nexperia's BZX84-Q series (e.g., BZX84-Q3V0,215) with explicit automotive qualification.
BZX84-B3V0,235 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):
- 3 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 10 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-B3V0,235 FAQ
1.How can I place an order for BZX84-B3V0,235 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-B3V0,235 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-B3V0,235 reliable?
The price and inventory of BZX84-B3V0,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-B3V0,235 is usually 5 days.
3.What payment methods are accepted for BZX84-B3V0,235?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-B3V0,235 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-B3V0,235?
BZX84-B3V0,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-B3V0,235 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-B3V0,235?
For technical support, including BZX84-B3V0,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-B3V0,235 requirements.
6.How does Aetrix verify that BZX84-B3V0,235 is sourced from the original manufacturer or authorized distributors?
All BZX84-B3V0,235 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-B3V0,235 meets industry standards.
7.What is the process for return or replacement of BZX84-B3V0,235?
All BZX84-B3V0,235 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-B3V0,235, 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-B3V0,235 part is unused and in its original packaging.
Return procedure for BZX84-B3V0,235:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-B3V0,235 Tags
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MMBZ5240B-7-F
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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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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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