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Nexperia USA Inc. BZX38450-B6V2X
- Part No.:
- BZX38450-B6V2X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-B6V2X.pdf
- Description:
- DIODE ZENER 6.2V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,269
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Product details
Overview
BZX38450-B6V2X 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 6.2 V regulation at 50 µA test current, with ±2 % tolerance, 160 Ω differential resistance at 5 mA, and 0.4 mV/K temperature coefficient - enabling stable operation in portable battery-powered sensors and microcontroller reset circuits.
For engineers reviewing the BZX38450-B6V2X datasheet, BZX38450-B6V2X pinout, BZX38450-B6V2X application, or BZX38450-B6V2X equivalent, key selection criteria include low-test-current regulation accuracy, thermal stability in compact layouts, SOD323 footprint compatibility, and leakage behavior under sub-10 µA bias conditions.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 6.08 V to 6.32 V at IZ = 50 µA, and maintains regulation down to 1 µA reverse current. Its differential resistance drops to 10 Ω at IZ = 5 mA, supporting improved load regulation in low-noise analog references.
The device features an intentional minor rise in leakage current (per AN90031) to optimize fast switching transients and reduce high-frequency noise in signal conditioning paths. Junction-to-ambient thermal resistance is 415 K/W on FR4 PCB, limiting continuous power dissipation to 300 mW at Tamb ≤ 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.2 V at IZ = 50 µA - enables accurate low-bias voltage reference for MCU brown-out detection |
| Voltage Tolerance | ±2 % - ensures tight regulation without post-production trimming in space-constrained designs |
| Differential Resistance | 160 Ω at IZ = 50 µA; 10 Ω at IZ = 5 mA - supports stable output under varying load currents |
| Temperature Coefficient | +0.4 mV/K - provides near-zero drift across −55 °C to +150 °C junction range |
| Forward Voltage | ≤ 0.9 V at IF = 10 mA - allows use as polarity-sensitive clamp in bidirectional protection schemes |
| Power Dissipation | 300 mW max at Tamb ≤ 25 °C - defines thermal derating envelope for PCB layout and copper area planning |
| Junction Temperature | −55 °C to +150 °C - supports operation in industrial and automotive under-hood environments |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package: 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated voltage node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - reduces quiescent current in always-on battery monitoring circuits |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - improves transient response and suppresses switching noise |
| Tight voltage tolerance | ±2 % (B-series) - eliminates need for external trimming in precision reference applications |
| Compact SMD footprint | SOD323 package - saves >60 % board area vs. DO-35 through-hole Zeners |
| Thermal robustness | 150 °C max junction temperature - supports reflow soldering and high-ambient deployments |
Applications
| Microcontroller Reset Circuit | Portable Sensor Bias Reference |
|---|---|
Use Scenario: Provides clean, stable 6.2 V reference to enable precise brown-out reset threshold in ARM Cortex-M0+ systems. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp reset line voltage during supply ramp-up. Use Value: ±2 % tolerance ensures reset triggers within 10 mV of design target, eliminating firmware calibration overhead. |
Use Scenario: Supplies regulated bias to MEMS accelerometer analog front-end in coin-cell–powered IoT nodes. IC Role / Device Role / Timing Role: Low-current voltage reference establishing fixed bias point for signal chain amplifiers. Use Value: 50 µA test current matches typical sensor sleep-mode current, minimizing standby power penalty. |
| USB-C Power Negotiation Clamp | Industrial Signal Conditioning |
Use Scenario: Clamps CC line voltage during USB PD communication to prevent overvoltage damage to Type-C controller. IC Role / Device Role / Timing Role: Fast-switching Zener used as bidirectional overvoltage protector on differential data lines. Use Value: Optimized leakage profile reduces capacitive loading and preserves signal integrity up to 3 MHz. |
Use Scenario: Stabilizes reference voltage for 16-bit SAR ADC in programmable logic controller analog input modules. IC Role / Device Role / Timing Role: Precision shunt regulator supplying excitation to RTD bridge and ADC reference input. Use Value: +0.4 mV/K tempco contributes <0.02 %FS error over −40 °C to +85 °C operating 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 |
|---|---|---|---|
| ON Semiconductor MMBZ5232BS | 6.2 V ±5 %, 100 mW rating, SOT-23 package | Higher power dissipation limit but looser tolerance and larger footprint | Preferred where board space permits and ±5 % regulation suffices |
| Vishay BZX384-B6V2 | Identical 6.2 V ±2 % spec, same SOD323 package, but no AN90031 leakage optimization | Lacks intentional leakage tuning - less effective in noise-sensitive analog signal paths | Valid drop-in for cost-sensitive designs where fast transient suppression is not required |
Compared with MMBZ5232BS, BZX38450-B6V2X offers tighter tolerance and smaller size but lower power handling; versus BZX384-B6V2, it adds verified leakage optimization for reduced switching noise in precision analog stages.
Availability
BZX38450-B6V2X is available at Aetrix Electronics and suitable for portable sensor biasing, microcontroller reset circuits, USB-C line clamping, and industrial signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX38450-B6V2X 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 advanced packaging and automotive-grade qualification.
The BZX38450 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 reverse current at 5.5 V for BZX38450-B6V2X?
At 5.5 V reverse bias and Tj = 25 °C, the typical reverse current is ≤ 0.1 µA - confirmed in Figure 5 of the datasheet. This ultra-low leakage ensures minimal parasitic loading in high-impedance reference nodes and extends battery life in always-on monitoring circuits.
Can BZX38450-B6V2X be used in parallel for higher current capability?
No - Zener diodes exhibit negative temperature coefficients and mismatched breakdown voltages, causing current hogging and thermal runaway when paralleled. For higher current, use a single higher-power Zener or add an external series pass transistor with feedback control.
Is the SOD323 footprint compatible with automated optical inspection (AOI)?
Yes - the SOD323 package has standardized 1.3 mm lead pitch and clearly visible cathode marking bar, meeting IPC-A-610 Class 2/3 AOI detectability requirements. The 0.95 mm height also avoids shadowing issues in bottom-view camera systems.
Does BZX38450-B6V2X meet AEC-Q200 stress testing requirements?
No - this part is not automotive-qualified. Nexperia explicitly states in Section 14 that non-automotive qualified products like BZX38450-B6V2X are unsuitable for safety-critical or life-support systems, and lack AEC-Q200 qualification documentation.
BZX38450-B6V2X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX38450
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX38450-B6V2X FAQ
1.How can I place an order for BZX38450-B6V2X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-B6V2X 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-B6V2X reliable?
The price and inventory of BZX38450-B6V2X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX38450-B6V2X is usually 5 days.
3.What payment methods are accepted for BZX38450-B6V2X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-B6V2X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-B6V2X?
BZX38450-B6V2X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-B6V2X 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-B6V2X?
For technical support, including BZX38450-B6V2X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-B6V2X requirements.
6.How does Aetrix verify that BZX38450-B6V2X is sourced from the original manufacturer or authorized distributors?
All BZX38450-B6V2X 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-B6V2X meets industry standards.
7.What is the process for return or replacement of BZX38450-B6V2X?
All BZX38450-B6V2X units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-B6V2X, 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-B6V2X part is unused and in its original packaging.
Return procedure for BZX38450-B6V2X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-B6V2X Tags
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