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Nexperia USA Inc. BZX38450-C2V2-QF
- Part No.:
- BZX38450-C2V2-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-C2V2-QF.pdf
- Description:
- DIODE ZENER 2.2V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:3,114
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Product details
Overview
BZX38450-C2V2-Q from Nexperia is a low-current Zener voltage regulator diode in SOD323 (SC-76) package, designed for precision biasing and voltage reference in ultra-low-power circuits. It delivers a nominal 2.2 V regulation at 50 µA test current, with ±2 % tolerance, 600 Ω differential resistance at 5 mA, and 1.0 µA reverse current at 1.0 V, enabling stable operation in battery-powered sensor nodes and automotive microcontroller reset circuits.
For engineers reviewing the BZX38450-C2V2-Q datasheet, BZX38450-C2V2-Q pinout, BZX38450-C2V2-Q application, or BZX38450-C2V2-Q equivalent, key selection criteria include its AEC-Q101 qualification, 300 mW power dissipation limit, cathode-anode polarity marking, and optimized leakage profile for fast switching noise reduction per AN90031.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 2.09 V to 2.31 V at 50 µA, exhibiting a negative temperature coefficient of −3.5 mV/K and 210 pF junction capacitance at 0 V. Its low 50 µA test current enables accurate regulation under minimal bias conditions typical of portable electronics.
The device features intentional minor leakage current rise (C-series variant), improving transient response and reducing high-frequency noise in voltage reference paths. Thermal resistance from junction to ambient is 415 K/W on FR4 PCB, supporting reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 2.2 V at IZ = 50 µA - precise low-voltage reference for MCU reset or ADC biasing |
| Voltage Tolerance | ±2 % - tight regulation ensures consistent threshold behavior across temperature and production lots |
| Differential Resistance | 600 Ω max at IZ = 5 mA - defines output impedance and load regulation sensitivity |
| Reverse Current | 1.0 µA max at VR = 1.0 V - enables ultra-low standby power in always-on circuits |
| Forward Voltage | 0.9 V max at IF = 10 mA - supports use as forward-biased clamp or protection element |
| Total Power Dissipation | 300 mW max at Tamb ≤ 25 °C - sets thermal design margin for PCB layout and copper area |
| Junction Temperature | −55 °C to +150 °C - validated for under-hood automotive environments per AEC-Q101 |
Pinout & Package
Package: SOD323 (SC-76), surface-mounted plastic case measuring 1.7 mm × 1.25 mm × 0.95 mm, with 1.3 mm lead pitch and cathode marked by a bar on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-bias configuration establishes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and body electronics |
| Low test current (50 µA) | Enables stable regulation in energy-constrained systems such as coin-cell IoT sensors |
| C-series leakage optimization | Intentional minor IR increase improves switching speed and reduces broadband noise per AN90031 |
| Small SOD323 footprint | Reduces PCB area by >40 % vs. DO-35, supporting high-density portable designs |
| −3.5 mV/K tempco | Predictable voltage drift allows compensation in precision analog front-ends |
Applications
| Automotive Microcontroller Reset | Portable Sensor Bias Reference |
|---|---|
|
Use Scenario: Providing clean, stable reset voltage to automotive-grade MCUs during cold cranking or battery brownout events. IC Role / Device Role / Timing Role: Zener-based voltage reference establishing logic-level reset threshold independent of supply rail fluctuations. Use Value: AEC-Q101 qualification and 150 °C junction rating ensure functional safety compliance in under-hood ECUs. |
Use Scenario: Supplying bias voltage to MEMS accelerometers and temperature sensors in wearable health monitors. IC Role / Device Role / Timing Role: Low-current voltage reference enabling <1 µA system standby current while maintaining sensor accuracy. Use Value: 50 µA test current and 1.0 µA reverse leakage at 1.0 V minimize quiescent drain on CR2032 batteries. |
| USB-C Port Protection Clamp | Industrial PLC Input Conditioning |
|
Use Scenario: Clamping transient overvoltage on USB-C CC lines during hot-plug events. IC Role / Device Role / Timing Role: Fast-switching Zener acting as bidirectional ESD clamp between data line and ground. Use Value: Optimized C-series leakage profile reduces signal distortion and improves high-speed data integrity. |
Use Scenario: Stabilizing 3.3 V logic thresholds for discrete input optocouplers in factory automation controllers. IC Role / Device Role / Timing Role: Precision shunt regulator defining input voltage trip point for digital status detection. Use Value: ±2 % tolerance and 600 Ω dynamic impedance ensure repeatable 3.3 V recognition across operating temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B2V2 | Same 2.2 V nominal, ±5 % tolerance, no AEC-Q101 qualification | Limited to industrial/commercial grade; not rated for automotive temperature cycling | Select when cost sensitivity outweighs automotive reliability requirements |
| MMSZ4678T1G | 2.2 V nominal, ±5 %, SOD-123 package (larger footprint), 500 mW Ptot | Higher power handling but less suitable for ultra-dense layouts; lacks C-series leakage tuning | Choose when higher surge immunity is needed and board space permits larger package |
Compared with BZX38450-C2V2-Q, the BZX384-B2V2 sacrifices automotive qualification and tight tolerance for lower cost, while MMSZ4678T1G trades miniaturization and noise-optimized leakage for greater power robustness-making the C2V2-Q optimal for AEC-Q101-compliant, space-constrained, low-noise reference designs.
Availability
BZX38450-C2V2-Q is available at Aetrix Electronics and suitable for automotive microcontroller reset, portable sensor bias reference, and USB-C port protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX38450-C2V2-Q 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 components and advanced packaging.
The BZX38450-Q series belongs to Nexperia's AEC-Q101-certified Zener diode product line, engineered specifically for low-current voltage reference and regulation in automotive and portable electronics where size, stability, and qualification matter.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The BZX38450-C2V2-Q has a nominal Zener voltage of 2.2 V, with guaranteed breakdown occurring between 2.09 V and 2.31 V at 50 µA test current. Its absolute maximum non-repetitive peak reverse voltage is not specified separately; instead, it is limited by the 40 W non-repetitive peak reverse power dissipation rating at 100 µs pulse width, which corresponds to ~200 V at 200 mA surge current.
How does the C-series differ from the B-series in the BZX38450-Q family?
The C-series (e.g., BZX38450-C2V2-Q) features an intentionally elevated reverse leakage current compared to the B-series, optimized per AN90031 for faster switching transitions and reduced high-frequency noise in voltage reference applications. This trade-off improves dynamic performance without compromising regulation accuracy or thermal limits.
Can this Zener diode be used in forward-bias mode?
Yes-the BZX38450-C2V2-Q exhibits a forward voltage of ≤0.9 V at 10 mA, making it usable as a low-drop clamp or protection diode in forward conduction. However, its primary design intent and characterization are for reverse-bias Zener operation; forward characteristics are secondary and not optimized for high-current rectification.
Is thermal derating required above 25 °C ambient?
Yes-total power dissipation must be linearly derated above 25 °C ambient at 2.4 mW/°C, based on its 415 K/W junction-to-ambient thermal resistance. At 85 °C ambient, maximum allowable power drops to approximately 156 mW, requiring careful PCB copper area allocation and thermal simulation for sustained operation.
BZX38450-C2V2-QF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX38450-Q
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.2 V
- Tolerance:
- ±5%
- Power - Max:
- 300 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:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX38450-C2V2-QF FAQ
1.How can I place an order for BZX38450-C2V2-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-C2V2-QF 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 BZX38450-C2V2-QF reliable?
The price and inventory of BZX38450-C2V2-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX38450-C2V2-QF is usually 5 days.
3.What payment methods are accepted for BZX38450-C2V2-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-C2V2-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-C2V2-QF?
BZX38450-C2V2-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-C2V2-QF 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 BZX38450-C2V2-QF?
For technical support, including BZX38450-C2V2-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-C2V2-QF requirements.
6.How does Aetrix verify that BZX38450-C2V2-QF is sourced from the original manufacturer or authorized distributors?
All BZX38450-C2V2-QF 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 BZX38450-C2V2-QF meets industry standards.
7.What is the process for return or replacement of BZX38450-C2V2-QF?
All BZX38450-C2V2-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-C2V2-QF, 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 BZX38450-C2V2-QF part is unused and in its original packaging.
Return procedure for BZX38450-C2V2-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-C2V2-QF Tags
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MM5Z5V1ST1G
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