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Nexperia USA Inc. BZX8450-B5V6R
- Part No.:
- BZX8450-B5V6R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-B5V6R.pdf
- Description:
- DIODE ZENER 5.6V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,789
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Product details
Overview
BZX8450-B5V6R from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision voltage reference and biasing in ultra-low-power circuits. It delivers a nominal 5.6 V regulation at 50 µA test current, with ±2 % tolerance, 400 Ω dynamic resistance at 5 mA, and 2.0 µA max reverse leakage at 4.0 V, enabling stable operation in portable battery-powered sensors and microcontroller reset circuits.
For engineers reviewing the BZX8450-B5V6R datasheet, BZX8450-B5V6R pinout, BZX8450-B5V6R application, or BZX8450-B5V6R equivalent, this page provides verified electrical parameters, thermal behavior, SOT23 terminal mapping, and direct alternatives for low-power voltage reference design.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 5.49 V to 5.71 V at IZ = 50 µA, exhibiting a temperature coefficient of −2.0 mV/K and differential resistance of 400 Ω at 5 mA. Its low 50 µA test current enables accurate regulation under minimal bias conditions typical of energy-constrained systems.
The device features intentional minor leakage optimization per AN90031 for fast switching transients and reduced noise in signal conditioning paths. Thermal resistance from junction to ambient is 500 K/W on FR4 PCB, limiting continuous power dissipation to 250 mW at Tamb ≤ 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Regulation Voltage (VZ) | 5.49 V to 5.71 V at IZ = 50 µA - defines precise low-bias reference point for analog sensing and MCU brown-out detection |
| Tolerance | ±2 % - ensures tight voltage accuracy without post-production trimming in space-constrained designs |
| Differential Resistance (rdiff) | 400 Ω at IZ = 5 mA - determines load regulation error under varying current draw in feedback networks |
| Reverse Leakage (IR) | 2.0 µA max at VR = 4.0 V - minimizes quiescent current drain in always-on battery monitoring circuits |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - supports bidirectional clamping or dual-role use in protection interfaces |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C - sets maximum steady-state thermal budget on standard FR4 PCB |
| Junction Temperature (Tj) | −55 °C to +150 °C - enables deployment in industrial ambient environments without derating |
Pinout & Package
SOT23 plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch, tin-plated terminations compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential node in reverse-biased Zener configuration; required for proper breakdown conduction |
| 2 | Not Connected (n.c.) | Internally unconnected terminal - must remain floating; no PCB trace or solder mask relief needed |
| 3 | Cathode (K) | Connects to higher-potential node; serves as voltage reference output point in shunt regulator topology |
Key Features
| Feature | Design Value |
|---|---|
| Low Test Current Operation | Specified at 50 µA - enables stable regulation in µA-level bias networks for IoT sensor nodes and wearables |
| Optimized Leakage Profile | Intentional minor rise per AN90031 - reduces switching noise and improves transient response in ADC reference buffers |
| High Voltage Accuracy | ±2 % tolerance band - eliminates need for external trimming in factory-calibrated measurement front-ends |
| Thermal Stability | −2.0 mV/K temperature coefficient - limits drift to ±11.2 mV over −40 °C to +85 °C operating range |
| Robust Package | SOT23 with 150 °C max junction rating - supports high-reliability deployment in automotive under-hood auxiliary circuits |
Applications
| Portable Sensor Biasing | Microcontroller Reset Reference |
|---|---|
Use Scenario: Providing stable 5.6 V reference for analog front-end amplifiers in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Shunt voltage regulator establishing fixed bias point for op-amp rails and ADC reference inputs. Use Value: Enables sub-10 µA quiescent current operation while maintaining <0.5 % reference drift across temperature and battery discharge. |
Use Scenario: Generating precise reset threshold for 3.3 V microcontrollers using resistor-divider feedback to internal POR circuitry. IC Role / Device Role / Timing Role: Precision Zener element defining exact voltage trip point for power-on reset assertion. Use Value: Guarantees deterministic reset release at 5.6 V ±0.11 V, preventing premature firmware execution during brown-out conditions. |
| Low-Power Signal Clamping | Reference Voltage Source |
Use Scenario: Protecting ADC input pins from ESD-induced overvoltage in handheld medical diagnostic devices. IC Role / Device Role / Timing Role: Bidirectional clamp using forward conduction (VF ≤ 0.9 V) and reverse breakdown (VZ = 5.6 V). Use Value: Limits transient excursions to ±0.9 V/5.6 V with <2 µA leakage, preserving signal integrity without loading source impedance. |
Use Scenario: Supplying stable reference to DACs and voltage-controlled oscillators in wireless transmitter modules. IC Role / Device Role / Timing Role: Primary voltage reference generator feeding into precision current sources and feedback loops. Use Value: Delivers <10 ppm/°C effective stability via matched rdiff and low thermal resistance, reducing frequency drift in RF synthesis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C5V6 | ±5 % tolerance, 120 pF capacitance at 0 V, 2.0 µA IR at 4.0 V | Higher voltage uncertainty acceptable in non-critical biasing; lower cost for consumer-grade designs | Select when ±5 % regulation accuracy suffices and board space allows same SOT23 footprint |
| MMSZ5232B | ±5 % tolerance, 500 mW Ptot, 100 Ω rdiff at 20 mA, 150 °C Tj | Higher power handling and lower impedance suit higher-current references but require larger thermal margin | Choose for applications needing <100 Ω dynamic resistance at >5 mA loads, accepting wider tolerance and different marking |
Compared with BZX8450-B5V6R, BZX84-C5V6 trades precision for cost in non-critical biasing, while MMSZ5232B offers lower impedance at higher current but sacrifices voltage accuracy and increases thermal demand.
Availability
BZX8450-B5V6R is available at Aetrix Electronics and suitable for portable sensor biasing, microcontroller reset reference, and low-power signal clamping requiring stable component supply with full traceability and lifecycle continuity.
Supply support for BZX8450-B5V6R 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 logic, discrete, and MOSFET solutions, headquartered in Nijmegen, Netherlands.
This device belongs to the BZX8450 series of low-current Zener regulators, engineered specifically for ultra-low-power voltage reference and biasing in battery-operated and space-constrained electronics.
FAQ
What is the maximum reverse voltage before breakdown for BZX8450-B5V6R?
The device exhibits a nominal Zener voltage of 5.6 V, with guaranteed breakdown occurring between 5.49 V and 5.71 V at 50 µA test current. Below 5.49 V, reverse leakage remains ≤2.0 µA at 4.0 V; no hard "maximum reverse voltage" exists outside breakdown-operation below VZ(min) maintains high-impedance blocking behavior.
Can BZX8450-B5V6R be used in forward conduction mode?
Yes-it functions as a standard silicon diode in forward bias, with VF ≤ 0.9 V at 10 mA. This enables dual-use configurations such as bidirectional ESD clamping (forward: ≤0.9 V, reverse: 5.6 V), though its primary design intent is reverse-biased Zener regulation at low current.
How does the "n.c." pin affect PCB layout?
Pin 2 is internally not connected and must remain unconnected on the PCB. No copper trace, solder paste, or thermal pad should be assigned to it. Standard SOT23 footprints accommodate this by leaving the center pad isolated-no special routing or keep-out is required beyond standard SMT clearance rules.
Is BZX8450-B5V6R suitable for automotive applications?
No-this part is not AEC-Q200 qualified or tested for automotive use. Its datasheet explicitly states suitability only for industrial, consumer, and general-purpose electronics. For automotive applications, Nexperia's automotive-qualified equivalents (e.g., BZX84-A5V6) must be selected to meet qualification, traceability, and reliability requirements.
BZX8450-B5V6R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX8450
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.6 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX8450-B5V6R FAQ
1.How can I place an order for BZX8450-B5V6R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-B5V6R 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 BZX8450-B5V6R reliable?
The price and inventory of BZX8450-B5V6R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-B5V6R is usually 5 days.
3.What payment methods are accepted for BZX8450-B5V6R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-B5V6R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-B5V6R?
BZX8450-B5V6R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-B5V6R 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 BZX8450-B5V6R?
For technical support, including BZX8450-B5V6R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-B5V6R requirements.
6.How does Aetrix verify that BZX8450-B5V6R is sourced from the original manufacturer or authorized distributors?
All BZX8450-B5V6R 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 BZX8450-B5V6R meets industry standards.
7.What is the process for return or replacement of BZX8450-B5V6R?
All BZX8450-B5V6R units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-B5V6R, 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 BZX8450-B5V6R part is unused and in its original packaging.
Return procedure for BZX8450-B5V6R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-B5V6R Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ5245BS-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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SMAZ12-13-F
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