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Nexperia USA Inc. BZX38450-C6V2X
- Part No.:
- BZX38450-C6V2X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-C6V2X.pdf
- Description:
- DIODE ZENER 6.2V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:27,718
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Product details
Overview
BZX38450-C6V2X from Nexperia is a low-current Zener voltage regulator diode in SOD323 (SC-76) package, designed for precision biasing and voltage reference in portable electronics. It delivers a nominal 6.2 V regulation at 50 µA test current, with ±5 % tolerance, 160 Ω differential resistance at 5 mA, and 0.4 mV/K temperature coefficient - enabling stable operation in battery-powered sensor nodes and low-power microcontroller reset circuits.
For engineers reviewing the BZX38450-C6V2X datasheet, BZX38450-C6V2X pinout, BZX38450-C6V2X application, or BZX38450-C6V2X equivalent, key selection criteria include its low 50 µA test current, tight thermal coefficient, SOD323 footprint compatibility, and optimized leakage behavior for noise-sensitive analog front-ends.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 5.89 V to 6.51 V at IZ = 50 µA. Its differential resistance drops to 10 Ω at IZ = 5 mA, supporting stable regulation under light load transients.
The device features an intentional minor rise in leakage current per AN90031, improving switching speed and reducing high-frequency noise in reference 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 - defines primary regulation point for low-bias reference design |
| Voltage Tolerance | ±5 % - supports cost-optimized designs where tighter tolerance is not required |
| Differential Resistance | 160 Ω at IZ = 50 µA; 10 Ω at IZ = 5 mA - determines output impedance and load regulation error |
| Temperature Coefficient | +0.4 mV/K - enables predictable drift compensation in temperature-stable references |
| Forward Voltage | ≤ 0.9 V at IF = 10 mA - ensures minimal forward conduction loss in dual-direction protection schemes |
| Power Dissipation | 300 mW max at Tamb ≤ 25 °C - sets thermal derating boundary for PCB layout and ambient conditions |
| Junction Temperature | −55 °C to +150 °C - supports industrial-grade operation without active cooling |
Pinout & Package
Package: SOD323 (SC-76), surface-mounted plastic package; 2 leads; 1.3 mm pitch; 1.7 mm × 1.25 mm × 0.95 mm body. Cathode identified by marking bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated voltage node; polarity must be observed to enable reverse-bias Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - minimizes quiescent current draw in always-on battery circuits |
| Optimized leakage profile | Intentional minor leakage rise per AN90031 - reduces switching noise in ADC reference buffers |
| Thermal stability | +0.4 mV/K tempco - enables <±10 mV drift over −40 °C to +85 °C without external compensation |
| SMD compatibility | SOD323 footprint - supports automated placement and reflow in space-constrained IoT modules |
| Robust surge handling | 40 W non-repetitive peak reverse power (100 µs pulse) - withstands ESD-induced transients in input protection |
Applications
| Portable Sensor Biasing | Microcontroller Reset Reference |
|---|---|
|
Use Scenario: Providing stable 6.2 V bias to analog sensor signal conditioning circuitry in wearable health monitors. IC Role / Device Role / Timing Role: Zener voltage reference establishing precise DC offset and gain-setting node for op-amp stages. Use Value: Low 50 µA test current extends coin-cell battery life beyond 2 years; ±5 % tolerance meets medical-grade sensor calibration requirements. |
Use Scenario: Generating clean reset threshold for ultra-low-power MCU (e.g., ARM Cortex-M0+) in smart metering endpoints. IC Role / Device Role / Timing Role: Regulator diode defining VREF for external reset supervisor IC or internal brown-out detection. Use Value: +0.4 mV/K tempco ensures reset voltage remains within 15 mV window across operating temperature range, preventing spurious resets. |
| Low-Power ADC Reference | ESD-Sensitive Interface Protection |
|
Use Scenario: Supplying reference voltage to 12-bit SAR ADC in battery-operated environmental data loggers. IC Role / Device Role / Timing Role: Precision shunt reference stabilizing VREF input to ADC, replacing higher-quiescent LDOs. Use Value: 10 Ω dynamic impedance at 5 mA ensures <0.1 LSB reference error under varying digital load currents. |
Use Scenario: Clamping transient voltages on RS-485 bus lines in industrial control panels exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response Zener clamp absorbing sub-µs ESD events while maintaining signal integrity. Use Value: 40 W non-repetitive surge rating handles IEC 61000-4-2 Level 4 (15 kV air/8 kV contact) without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5234B (ON Semiconductor) | 6.2 V ±5 %, 100 Ω rdiff @ 20 mA, 350 mW Ptot, SOT-23 package | Larger footprint and higher test current (20 mA) - less suitable for nanoamp-bias systems | Select when higher power margin or legacy SOT-23 board compatibility is required |
| BZX84-C6V2 (Nexperia) | 6.2 V ±5 %, 100 Ω rdiff @ 5 mA, 300 mW Ptot, SOT-23 package | Higher leakage and no intentional leakage optimization - may increase noise in precision analog paths | Choose for general-purpose regulation where AN90031 noise reduction is unnecessary |
Compared with MMBZ5234B and BZX84-C6V2, BZX38450-C6V2X offers superior low-current regulation fidelity and noise performance in SOD323 form factor, making it optimal for space- and power-constrained precision analog subsystems rather than generic voltage clamping.
Availability
BZX38450-C6V2X is available at Aetrix Electronics and suitable for portable sensor biasing, microcontroller reset referencing, and low-power ADC reference applications requiring stable component supply across extended production lifecycles.
Supply support for BZX38450-C6V2X 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 devices with focus on efficiency and miniaturization.
BZX38450 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for battery-powered and noise-sensitive analog reference applications where traditional regulators consume excessive quiescent current.
FAQ
What is the maximum continuous reverse current this diode can sustain at 6.2 V?
The BZX38450-C6V2X is rated for a maximum total power dissipation of 300 mW at Tamb ≤ 25 °C. At 6.2 V, this corresponds to a maximum continuous reverse current of approximately 48 mA (300 mW ÷ 6.2 V). Derating is required above 25 °C per the 415 K/W junction-to-ambient thermal resistance.
Does the "C" in BZX38450-C6V2X indicate a specific tolerance or temperature coefficient?
Yes - the "C" suffix denotes the ±5 % voltage tolerance grade and identifies the variant with intentional minor leakage current optimization per Application Note AN90031. This version exhibits improved high-frequency noise suppression and faster transient response compared to "B"-grade parts.
Can this Zener diode be used in forward-biased configuration as a standard rectifier?
No - the BZX38450-C6V2X is optimized for reverse-bias Zener operation. Its forward voltage is rated only up to 0.9 V at 10 mA, and it lacks the surge current rating, reverse recovery time specification, or ruggedness required for rectification. Use dedicated switching diodes like BAS16 for such roles.
How does the SOD323 package affect thermal performance compared to larger packages like DO-35?
The SOD323 package has a junction-to-ambient thermal resistance of 415 K/W on FR4 PCB, significantly higher than DO-35's ~200 K/W. This limits continuous power handling but enables high-density layouts. For thermal-limited designs, reduce ambient temperature or use copper pour to improve heat spreading - the 110 K/W junction-to-solder-point resistance allows effective thermal coupling to PCB copper.
BZX38450-C6V2X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±5%
- 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-C6V2X FAQ
1.How can I place an order for BZX38450-C6V2X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-C6V2X 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-C6V2X reliable?
The price and inventory of BZX38450-C6V2X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX38450-C6V2X is usually 5 days.
3.What payment methods are accepted for BZX38450-C6V2X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-C6V2X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-C6V2X?
BZX38450-C6V2X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-C6V2X 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-C6V2X?
For technical support, including BZX38450-C6V2X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-C6V2X requirements.
6.How does Aetrix verify that BZX38450-C6V2X is sourced from the original manufacturer or authorized distributors?
All BZX38450-C6V2X 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-C6V2X meets industry standards.
7.What is the process for return or replacement of BZX38450-C6V2X?
All BZX38450-C6V2X units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-C6V2X, 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-C6V2X part is unused and in its original packaging.
Return procedure for BZX38450-C6V2X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-C6V2X Tags
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MM5Z5V1ST1G
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