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Nexperia USA Inc. BZX8450-C2V2VL
- Part No.:
- BZX8450-C2V2VL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C2V2VL.pdf
- Description:
- DIODE ZENER 2.2V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,413
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Product details
Overview
BZX8450-C2V2VL 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 2.2 V nominal regulation at 50 µA test current, with ±5 % tolerance, 250 mW total power dissipation, and 210 pF capacitance at 0 V - optimized for low-power sensor nodes and battery-powered microcontroller I/O protection.
For engineers reviewing the BZX8450-C2V2VL datasheet, BZX8450-C2V2VL pinout, BZX8450-C2V2VL application, or BZX8450-C2V2VL 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 device operates as a two-terminal shunt voltage regulator, maintaining stable 2.2 V output across load variations by conducting reverse current above its breakdown threshold. Its differential resistance is ≤600 Ω at 50 µA and ≤100 Ω at 5 mA, enabling predictable regulation under light-load conditions typical in standby circuits.
The BZX8450-C2V2VL features an intentionally elevated leakage current versus standard Zeners (per AN90031), improving switching speed and reducing high-frequency noise in feedback paths. Its temperature coefficient is −3.5 mV/K, supporting stable reference performance over −55 °C to +150 °C ambient range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 2.2 V at IZ = 50 µA - defines precise regulation point for low-bias analog references |
| Tolerance | ±5 % - supports cost-sensitive applications where tighter tolerance is not required |
| Power Dissipation | 250 mW at Tamb ≤ 25 °C on FR4 PCB - sets maximum continuous DC or pulsed power handling |
| Differential Resistance | ≤600 Ω at 50 µA; ≤100 Ω at 5 mA - determines regulation stiffness and output impedance in active bias networks |
| Diode Capacitance | 210 pF at VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and stability in RF-adjacent circuits |
| Forward Voltage | 0.9 V at IF = 10 mA - defines forward conduction drop when used in polarity-protection configurations |
| Junction Temperature | 150 °C max - constrains thermal design margin in sealed or high-ambient environments |
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 mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connected to lower-potential node; reverse-biased during regulation; must be routed with minimal trace inductance for noise-sensitive references |
| 2 | Not Connected (n.c.) | Internally unconnected; no electrical function; must remain floating - not tied to ground or supply |
| 3 | Cathode (K) | Connected to higher-potential node; carries full Zener current during regulation; thermal path to PCB copper via this terminal (Rth(j-sp) = 330 K/W) |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables use in µA-level standby circuits without loading source impedance |
| Optimized leakage profile | Intentional minor rise per AN90031 - reduces switching transients and broadband noise in feedback loops |
| Thermal performance | Rth(j-sp) = 330 K/W to cathode solder point - improves power-handling reliability on minimal copper areas |
| Small-footprint packaging | SOT23 with 1.9 mm pitch - supports high-density routing in wearables and IoT edge nodes |
Applications
| Portable Sensor Biasing | MCU I/O Clamp Protection |
|---|---|
Use Scenario: Providing stable 2.2 V reference for analog front-end of battery-powered environmental sensors (e.g., CO₂, humidity). IC Role / Device Role / Timing Role: Shunt voltage reference regulating bias voltage for op-amp input stages and ADC reference dividers. Use Value: Enables accurate 12-bit measurement accuracy over 0–85 °C using only 50 µA quiescent current, minimizing battery drain. |
Use Scenario: Protecting 3.3 V GPIO pins of ultra-low-power microcontrollers (e.g., Nordic nRF52) against ESD and overvoltage events. IC Role / Device Role / Timing Role: Low-capacitance (210 pF) clamping diode limiting transient voltage to 2.2 V + VF during fast-rising surges. Use Value: Prevents latch-up while adding <1 ns propagation delay due to minimal junction capacitance and optimized leakage behavior. |
| Low-Power LDO Feedback | RTC Backup Voltage Reference |
Use Scenario: Setting output voltage of discrete low-dropout regulators in energy-harvesting systems (e.g., solar-charged coin-cell devices). IC Role / Device Role / Timing Role: Precision Zener element in resistive divider network controlling pass transistor gate voltage. Use Value: Maintains ±5 % output accuracy across 1–100 µA load range, eliminating need for trimming in production calibration. |
Use Scenario: Supplying stable 2.2 V reference to real-time clock ICs during main power loss in smart meters and industrial controllers. IC Role / Device Role / Timing Role: Standby-mode voltage reference ensuring RTC oscillator frequency stability within ±10 ppm. Use Value: Delivers consistent regulation down to 50 µA, matching typical RTC backup current and avoiding brownout-induced time drift. |
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-C2V2 | Same 2.2 V, ±5 %, SOT23, but no intentional leakage optimization; rdiff = 600 Ω @ 50 µA (vs. BZX8450's 600 Ω @ 50 µA and 100 Ω @ 5 mA) | Lacks AN90031 noise-reduction tuning; less suitable for high-speed feedback or RF-adjacent biasing | Select when lowest-cost legacy replacement is needed and noise performance is secondary |
| MMSZ4678T1G | 2.2 V, ±5 %, SOD-123 package; 500 mW Ptot; rdiff = 100 Ω @ 20 mA; Cd = 250 pF @ 0 V | Larger footprint and higher capacitance limit use in high-frequency or space-constrained layouts | Select when higher power margin (500 mW) is required and board area permits SOD-123 |
Compared with BZX84-C2V2, the BZX8450-C2V2VL offers superior dynamic noise suppression and tighter low-current regulation; compared with MMSZ4678T1G, it trades power headroom for smaller size and lower capacitance - making it optimal for miniaturized, noise-sensitive, low-quiescent systems.
Availability
BZX8450-C2V2VL is available at Aetrix Electronics and suitable for portable sensor biasing, MCU I/O clamp protection, and low-power LDO feedback requiring stable component supply with guaranteed long-term manufacturability and consistent parametric screening.
Supply support for BZX8450-C2V2VL 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 logic, discrete, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for consumer, industrial, and automotive markets.
The BZX8450 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for battery-powered and space-constrained applications demanding stable voltage references at microampere bias levels.
FAQ
What is the maximum continuous reverse current the BZX8450-C2V2VL can handle at 25 °C ambient?
The device supports up to 200 mA forward current (IF), but as a Zener regulator, its continuous reverse current is limited by power dissipation. At 25 °C ambient on FR4 PCB, 250 mW rating allows ~114 mA at 2.2 V (P = V × I). Derating applies above 25 °C per Rth(j-a) = 500 K/W.
Can Pin 2 (n.c.) be grounded or left unconnected on the PCB?
Pin 2 is internally not connected and must remain electrically floating - neither grounded nor tied to any net. Connecting it risks internal shorting or unpredictable thermal behavior. The SOT23 footprint should isolate this pad with solder mask and no copper connection.
How does the "intentional minor rise of leakage current" improve performance?
Per AN90031, this controlled leakage reduces minority-carrier storage time, enabling faster turn-off during transient events and lowering broadband noise generation in feedback paths - particularly beneficial in precision analog biasing and high-frequency oscillator stabilization.
Is the BZX8450-C2V2VL suitable for automotive applications?
No. This part is not AEC-Q200 qualified and lacks automotive-grade screening, temperature cycling validation, or extended lifetime testing. Nexperia explicitly states non-automotive qualification in the legal disclaimers; use only in commercial or industrial environments with ambient ≤ +150 °C.
BZX8450-C2V2VL 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):
- 2.2 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 4 µA @ 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-C2V2VL FAQ
1.How can I place an order for BZX8450-C2V2VL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C2V2VL 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-C2V2VL reliable?
The price and inventory of BZX8450-C2V2VL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C2V2VL is usually 5 days.
3.What payment methods are accepted for BZX8450-C2V2VL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C2V2VL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C2V2VL?
BZX8450-C2V2VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C2V2VL 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-C2V2VL?
For technical support, including BZX8450-C2V2VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C2V2VL requirements.
6.How does Aetrix verify that BZX8450-C2V2VL is sourced from the original manufacturer or authorized distributors?
All BZX8450-C2V2VL 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-C2V2VL meets industry standards.
7.What is the process for return or replacement of BZX8450-C2V2VL?
All BZX8450-C2V2VL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C2V2VL, 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-C2V2VL part is unused and in its original packaging.
Return procedure for BZX8450-C2V2VL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C2V2VL Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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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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SMAZ12-13-F
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