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Nexperia USA Inc. BZX8450-B8V2R
- Part No.:
- BZX8450-B8V2R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-B8V2R.pdf
- Description:
- DIODE ZENER 8.2V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,806
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Product details
Overview
BZX8450-B8V2R from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision biasing and voltage reference in portable electronics. It delivers a nominal 8.2 V regulation at 50 µA test current, with ±2 % tolerance, 80 Ω differential resistance at 5 mA, and 3.2 mV/K temperature coefficient - enabling stable operation in battery-powered sensor nodes and microcontroller reset circuits.
For engineers reviewing the BZX8450-B8V2R datasheet, BZX8450-B8V2R pinout, BZX8450-B8V2R application, or BZX8450-B8V2R equivalent, this page provides verified electrical parameters, thermal behavior, SOT23 terminal mapping, and real-world use cases for low-power voltage stabilization where leakage and thermal drift are critical selection factors.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 8.04 V to 8.36 V at IZ = 50 µA. Its low 50 µA test current enables ultra-low quiescent current design, while intentional minor leakage rise (per AN90031) improves switching speed and reduces noise in signal conditioning paths.
Thermal resistance from junction to ambient is 500 K/W on FR4 PCB, and junction-to-solder-point is 330 K/W - confirming suitability for thermally constrained layouts. The device exhibits 6.2 V forward voltage at 10 mA and supports non-repetitive peak reverse power up to 40 W for surge immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 8.2 V at IZ = 50 µA - defines precise reference point for low-bias voltage monitoring |
| Voltage Tolerance | ±2 % - ensures tight regulation across production batches without trimming |
| Differential Resistance | 80 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Temperature Coefficient | +3.2 mV/K - quantifies voltage drift per degree Celsius rise in junction temperature |
| Forward Voltage | 0.9 V at IF = 10 mA - sets conduction threshold when used in series protection or clamping |
| Total Power Dissipation | 250 mW at Tamb ≤ 25 °C - defines maximum continuous DC power under standard PCB mounting |
| Reverse Leakage Current | 0.1 µA at VR = 6.2 V - confirms minimal standby current in high-impedance bias networks |
Pinout & Package
SOT23 plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch, single-sided FR4 PCB mountable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential node; reverse-biased during regulation |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating or grounded per layout best practice |
| 3 | Cathode (K) | Connects to higher-potential node; carries regulated current path to ground or supply rail |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables direct connection to high-impedance MCU ADC inputs or sleep-mode references |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces switching transients and broadband noise in analog front-ends |
| Tight voltage tolerance | ±2 % (B-series) - eliminates need for post-assembly calibration in precision voltage monitor designs |
| Compact SOT23 footprint | Standardized 3-pin outline with 1.9 mm pitch - compatible with automated pick-and-place and reflow processes |
Applications
| Microcontroller Reset Circuit | Portable Sensor Bias Network |
|---|---|
Use Scenario: Providing clean, stable reset voltage to ARM Cortex-M0+ MCUs in wearable health monitors. IC Role / Device Role / Timing Role: Zener reference source for external reset supervisor IC or internal bandgap comparator input. Use Value: 8.2 V regulation with ±2 % tolerance ensures reliable reset assertion across −40 °C to +85 °C without external trimming. |
Use Scenario: Supplying bias current to MEMS accelerometer analog front-end in Bluetooth LE asset trackers. IC Role / Device Role / Timing Role: Low-leakage voltage reference for current-source generation in ultra-low-power signal chain. Use Value: 0.1 µA leakage at 6.2 V minimizes battery drain in 10-year shelf-life applications. |
| USB-C Power Negotiation Reference | Industrial IO-Link Sensor Node |
Use Scenario: Generating stable 8.2 V reference for USB PD CC line voltage detection circuitry. IC Role / Device Role / Timing Role: Precision shunt regulator defining threshold for CC pin logic-level interpretation. Use Value: 80 Ω dynamic resistance ensures <10 mV deviation under 100 µA load variation from PD controller polling. |
Use Scenario: Setting reference voltage for 3.3 V LDO feedback divider in IO-Link master interface modules. IC Role / Device Role / Timing Role: Secondary reference stabilizing feedback network against supply ripple and temperature drift. Use Value: +3.2 mV/K tempco matches LDO error amplifier offset drift, reducing overall system gain error. |
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 MMBZ5231BS | 8.2 V ±5 %, 100 Ω rdiff, 10 µA IR @ 6.2 V | Higher leakage limits use in sub-µA standby systems | Prefer for cost-sensitive industrial controls where ±5 % tolerance is acceptable |
| Vishay BZX84-C8V2 | 8.2 V ±5 %, 100 Ω rdiff, no intentional leakage optimization | Lacks AN90031 noise-reduction profile | Choose when legacy compatibility or broad distributor stock is prioritized over low-noise performance |
Compared with BZX8450-B8V2R, MMBZ5231BS trades tighter thermal stability for higher leakage, while BZX84-C8V2 sacrifices noise performance and precision for wider availability - making BZX8450-B8V2R optimal for battery-constrained, low-noise analog sensing where ±2 % accuracy and 50 µA test current are design-critical.
Availability
BZX8450-B8V2R is available at Aetrix Electronics and suitable for portable medical devices, wireless sensor networks, and USB-C power interface designs requiring stable component supply with guaranteed long-term continuity.
Supply support for BZX8450-B8V2R 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 solutions with focus on efficiency, miniaturization, and sustainability.
The BZX8450 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for voltage reference and biasing in space- and power-constrained portable electronics.
FAQ
What is the maximum continuous reverse power dissipation for BZX8450-B8V2R?
The maximum continuous total power dissipation is 250 mW at ambient temperature ≤ 25 °C when mounted on a standard FR4 PCB with single-sided 70 μm copper. Derating is required above 25 °C at 2.0 mW/°C based on Rth(j-a) = 500 K/W.
Does BZX8450-B8V2R have a connected pin 2?
No - pin 2 is explicitly marked "n.c." (not connected) in the official Nexperia pinning diagram and must remain electrically floating. It is not internally bonded and has no circuit function; grounding or routing to signal nets may cause unintended parasitic coupling.
How does the 50 µA test current affect circuit design?
Specifying regulation at 50 µA enables direct integration into high-impedance nodes - such as MCU reset supervisor inputs or op-amp reference legs - without loading errors. Designers must ensure minimum bias current ≥50 µA for stable regulation, typically achieved via 100 kΩ–1 MΩ pull-up resistors from supply rails.
Is BZX8450-B8V2R suitable for automotive applications?
No - this device is not AEC-Q200 qualified and lacks automotive-grade screening, temperature range validation (−40 °C to +125 °C), or stress testing. Nexperia explicitly states non-automotive qualification in the legal disclaimers; use only in commercial or industrial environments within −55 °C to +150 °C operating limits.
BZX8450-B8V2R 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):
- 8.2 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 6.2 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-B8V2R FAQ
1.How can I place an order for BZX8450-B8V2R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-B8V2R 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-B8V2R reliable?
The price and inventory of BZX8450-B8V2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-B8V2R is usually 5 days.
3.What payment methods are accepted for BZX8450-B8V2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-B8V2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-B8V2R?
BZX8450-B8V2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-B8V2R 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-B8V2R?
For technical support, including BZX8450-B8V2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-B8V2R requirements.
6.How does Aetrix verify that BZX8450-B8V2R is sourced from the original manufacturer or authorized distributors?
All BZX8450-B8V2R 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-B8V2R meets industry standards.
7.What is the process for return or replacement of BZX8450-B8V2R?
All BZX8450-B8V2R units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-B8V2R, 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-B8V2R part is unused and in its original packaging.
Return procedure for BZX8450-B8V2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-B8V2R Tags
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MM5Z5V1ST1G
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