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Nexperia USA Inc. BZX8450-C3V0VL
- Part No.:
- BZX8450-C3V0VL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C3V0VL.pdf
- Description:
- DIODE ZENER 3V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,948
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Product details
Overview
BZX8450-C3V0VL 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 3.0 V regulation at 50 µA test current, with ±5 % tolerance, 0.8 µA max reverse leakage at VR = 2.4 V, and 250 mW total power dissipation - optimized for battery-powered sensor nodes and low-power microcontroller reset circuits.
For engineers reviewing the BZX8450-C3V0VL datasheet, BZX8450-C3V0VL pinout, BZX8450-C3V0VL application, or BZX8450-C3V0VL equivalent, key selection criteria include its low 50 µA regulation current, intentional leakage optimization for noise reduction (per AN90031), SOT23 footprint compatibility, and thermal resistance of 330 K/W to solder point - critical for space-constrained, thermally sensitive designs.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 2.85 V to 3.15 V at IZ = 50 µA. Its differential resistance is ≤ 600 Ω at IZ = 50 µA and ≤ 100 Ω at IZ = 5 mA, enabling stable regulation under light-load conditions typical in standby circuits.
The device features an intentionally elevated leakage current profile (per AN90031) to improve switching speed and reduce high-frequency noise in analog front-ends. Its temperature coefficient is −3.5 mV/K, supporting predictable drift behavior across −55 °C to +150 °C ambient operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 3.0 V (2.85–3.15 V range at 50 µA); enables accurate low-voltage reference for 3.3 V system rails. |
| Tolerance | ±5 % (C-series); supports cost-sensitive applications where tighter tolerance is not required. |
| Test Current | 50 µA; allows ultra-low quiescent current biasing in battery-operated IoT sensors. |
| Max Reverse Leakage | 0.8 µA at VR = 2.4 V; ensures minimal standby power loss in always-on monitoring circuits. |
| Total Power Dissipation | 250 mW at Tamb ≤ 25 °C on FR4 PCB; defines safe continuous operating envelope for SOT23 layout. |
| Junction-to-Solder-Point Rth | 330 K/W; informs thermal design when cathode tab is used as primary heat path. |
| Diode Capacitance | 170 pF at VR = 0 V, f = 1 MHz; impacts high-frequency noise filtering performance in reference paths. |
Pinout & Package
SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch) with gull-wing leads and standard FR4 reflow footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Anode connection | Connected to lower-potential node in reverse-biased configuration; must be routed with low-impedance path for stable biasing. |
| 2 (n.c.) | No connection | Internally unconnected; PCB pad may be omitted or left floating - no electrical function or thermal path. |
| 3 (Cathode) | Cathode connection | Connected to higher-potential node; serves as primary thermal conduction path (Rth(j-sp) = 330 K/W). |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - reduces supply current burden in energy-harvesting and coin-cell systems. |
| Optimized leakage profile | Intentional minor rise per AN90031 - improves transient response and suppresses broadband noise in analog references. |
| Thermal performance | Rth(j-sp) = 330 K/W - enables reliable operation without heatsinking in compact PCB layouts. |
| Small-footprint packaging | SOT23 with 1.9 mm pitch - compatible with high-density automated assembly and space-limited wearables. |
Applications
| Portable Sensor Biasing | Microcontroller Reset Reference |
|---|---|
Use Scenario: Providing stable voltage reference for analog sensor signal conditioning in Bluetooth LE temperature nodes. IC Role / Device Role / Timing Role: Zener voltage reference diode establishing precise 3.0 V bias point for op-amp input stages. Use Value: Low 50 µA regulation current extends CR2032 battery life beyond 5 years in sleep-dominated duty cycles. |
Use Scenario: Generating clean, temperature-stable reset threshold for ARM Cortex-M0+ MCUs in smart home controllers. IC Role / Device Role / Timing Role: Precision shunt regulator defining brown-out detection level at 2.85–3.15 V window. Use Value: ±5 % tolerance and −3.5 mV/K TC ensure deterministic reset behavior across −25 °C to +70 °C operating range. |
| Low-Power ADC Reference | USB-C Port Voltage Clamp |
Use Scenario: Supplying reference voltage to 12-bit SAR ADCs in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Low-noise shunt reference minimizing quantization error in sub-1 LSB measurements. Use Value: Optimized leakage profile (AN90031) reduces high-frequency noise coupling into reference rail, improving ENOB by ≥0.8 bits. |
Use Scenario: Clamping VBUS monitor line in USB-C accessory detection circuits to protect downstream logic. IC Role / Device Role / Timing Role: Overvoltage protection diode limiting sensed voltage to 3.15 V maximum during hot-plug transients. Use Value: 250 mW power rating and 170 pF capacitance enable fast clamping without signal distortion on 100 kHz sense lines. |
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 | 3.0 V, ±5 %, 200 mW, SOT23, VF = 0.9 V at IF = 10 mA | Lacks intentional leakage optimization; higher rdiff (≤ 1000 Ω at 50 µA) | Prefer for cost-driven designs where noise sensitivity is low and thermal margin is ample. |
| Vishay BZX84-C3V0 | 3.0 V, ±5 %, 300 mW, SOT23, Rth(j-a) = 450 K/W | Higher power rating but worse thermal resistance; no AN90031 leakage tuning | Choose when higher pulse power handling is needed, but avoid in thermally constrained layouts. |
Compared with MMBZ5226BS and BZX84-C3V0, the BZX8450-C3V0VL offers superior noise performance via documented leakage tuning (AN90031), lower thermal resistance to solder point (330 K/W), and tighter regulation stability at ultra-low currents - making it optimal for precision, low-power, and thermally dense applications.
Availability
BZX8450-C3V0VL is available at Aetrix Electronics and suitable for portable sensor biasing, microcontroller reset reference, and low-power ADC reference requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX8450-C3V0VL 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 automotive-qualified and industrial-grade components.
The BZX8450 series belongs to Nexperia's low-current Zener regulator product line, engineered specifically for ultra-low-power voltage reference and biasing in battery-operated and space-constrained electronics.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The BZX8450-C3V0VL has a nominal Zener voltage of 3.0 V with a guaranteed range of 2.85 V to 3.15 V at IZ = 50 µA. Its absolute maximum reverse voltage is not defined independently - breakdown occurs within this specified range under normal operation. Exceeding 3.15 V continuously risks exceeding power limits due to rising current.
Does this part have automotive qualification?
No. The BZX8450-C3V0VL is not automotive-qualified. Nexperia explicitly states in its legal disclaimers that unless otherwise specified in the datasheet, products are non-automotive qualified and not tested to AEC-Q101 or automotive reliability standards.
Can Pin 2 be used as a thermal pad or ground connection?
No. Pin 2 is internally not connected (n.c.), as confirmed in Table 2 of the datasheet. It provides no electrical or thermal function. Routing or soldering to this terminal offers no benefit and may risk mechanical stress or solder bridging in automated assembly.
How does the "intentional minor rise of leakage current" improve performance?
Per Application Note AN90031, the controlled increase in leakage current enhances carrier injection dynamics, reducing minority-carrier storage time and suppressing high-frequency oscillation in reference paths - directly improving noise floor and transient response in precision analog circuits.
BZX8450-C3V0VL 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):
- 3 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 800 nA @ 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:
- TO-236AB
BZX8450-C3V0VL FAQ
1.How can I place an order for BZX8450-C3V0VL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C3V0VL 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-C3V0VL reliable?
The price and inventory of BZX8450-C3V0VL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C3V0VL is usually 5 days.
3.What payment methods are accepted for BZX8450-C3V0VL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C3V0VL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C3V0VL?
BZX8450-C3V0VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C3V0VL 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-C3V0VL?
For technical support, including BZX8450-C3V0VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C3V0VL requirements.
6.How does Aetrix verify that BZX8450-C3V0VL is sourced from the original manufacturer or authorized distributors?
All BZX8450-C3V0VL 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-C3V0VL meets industry standards.
7.What is the process for return or replacement of BZX8450-C3V0VL?
All BZX8450-C3V0VL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C3V0VL, 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-C3V0VL part is unused and in its original packaging.
Return procedure for BZX8450-C3V0VL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C3V0VL Tags
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