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Nexperia USA Inc. BZX38450-B6V2-QX
- Part No.:
- BZX38450-B6V2-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-B6V2-QX.pdf
- Description:
- DIODE ZENER 6.2V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,255
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Product details
Overview
BZX38450-B6V2-QX from Nexperia is a low-current Zener voltage regulator diode in SOD323 (SC-76) package, rated for 6.2 V nominal regulation at 50 µA test current, with ±2 % tolerance, 300 mW total power dissipation, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX38450-B6V2-QX datasheet, BZX38450-B6V2-QX pinout, BZX38450-B6V2-QX application, or BZX38450-B6V2-QX equivalent, this page delivers verified electrical characteristics, thermal behavior, cathode/anode terminal mapping, automotive-grade reliability data, and direct alternatives for low-bias voltage reference design.
Technical Context
This device operates as a two-terminal shunt voltage reference, maintaining stable 6.2 V output across load variations using reverse-biased Zener breakdown. Its specified test current of 50 µA enables ultra-low quiescent current operation ideal for battery-powered systems.
With a differential resistance of 160 Ω at 5 mA and temperature coefficient of +0.4 mV/K, it delivers predictable regulation drift over temperature. The 110 K/W junction-to-solder-point thermal resistance supports reliable thermal coupling on FR4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.2 V at IZ = 50 µA - precise reference point for low-power biasing and sensing circuits |
| Tolerance | ±2 % - tight regulation window enabling accurate voltage clamping without post-calibration |
| Differential Resistance | 160 Ω at IZ = 5 mA - low dynamic impedance ensures minimal output voltage shift under varying load current |
| Temperature Coefficient | +0.4 mV/K - positive drift compensates for typical PCB thermal gradients in automotive ambient ranges |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C - sufficient headroom for transient surges in infotainment and body control modules |
| Junction Temperature Limit | 150 °C - supports continuous operation in under-hood environments per AEC-Q101 stress requirements |
| Reverse Leakage Current | ≤1.0 µA at VR = 5 V - ensures negligible standby current draw in always-on vehicle subsystems |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package: 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, single-sided copper FR4 mounting, marking bar denotes cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker (bar) aligns with cathode for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Low test current (50 µA) | Enables regulation in microamp-level supply rails such as real-time clock backup circuits |
| Optimized leakage profile | Intentional minor rise in IR improves switching speed and reduces noise in feedback paths |
| Thermal resistance Rth(j-sp) | 110 K/W to solder point - facilitates thermal management without heatsinking in space-constrained modules |
| Surface-mount compatibility | SOD323 footprint supports automated reflow and wave soldering per IPC-7351B standards |
Applications
| Automotive Body Control Module | Portable Medical Sensor Biasing |
|---|---|
Use Scenario: Stable 6.2 V reference for LIN transceiver bias and microcontroller ADC reference in door module ECUs. IC Role / Device Role / Timing Role: Shunt voltage regulator providing precision rail stabilization independent of battery voltage fluctuations (9–16 V). Use Value: Maintains <±0.1 V output variation across −40 °C to +125 °C ambient, ensuring consistent analog measurement accuracy. |
Use Scenario: Low-quiescent reference for wearable ECG front-end amplifiers powered by coin-cell batteries. IC Role / Device Role / Timing Role: Zener diode establishing fixed bias point for op-amp input stages with sub-1 µA standby draw. Use Value: Delivers 6.2 V regulation at 50 µA test current, extending battery life beyond 12 months in continuous monitoring mode. |
| Industrial IoT Node Power Management | Automotive Infotainment Display Backlight Control |
Use Scenario: Voltage clamp for RS-485 transceiver protection and local LDO enable threshold in smart meter gateways. IC Role / Device Role / Timing Role: Reverse-biased Zener limiting surge-induced overvoltage on communication lines during ESD events. Use Value: Withstands 40 W non-repetitive peak reverse power (100 µs pulse), meeting IEC 61000-4-2 Level 4 immunity. |
Use Scenario: Reference source for LED current-setting resistor network in LCD backlight dimming circuitry. IC Role / Device Role / Timing Role: Precision voltage reference defining constant-current setpoint for high-side LED driver ICs. Use Value: ±2 % tolerance ensures consistent brightness across production batches without calibration trim resistors. |
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-C6V2-Q | ±5 % tolerance, higher leakage (≤5 µA at 5 V), same SOD323 package and 6.2 V nominal | Acceptable where cost sensitivity outweighs precision; not recommended for ADC references | Select when tighter tolerance is unnecessary and BOM cost reduction is prioritized |
| MMSZ5232B-7-F | 6.2 V nominal, ±5 %, 500 mW Ptot, SOD-123 package (larger footprint, higher thermal mass) | Higher power handling but incompatible with SOD323 layout; requires PCB redesign | Choose only if thermal margin exceeds 300 mW requirement and board space allows SOD-123 |
Compared with BZX38450-B6V2-QX, the BZX384-C6V2-Q trades precision for cost in non-critical biasing, while MMSZ5232B-7-F offers greater power headroom at the expense of footprint compatibility and automotive qualification.
Availability
BZX38450-B6V2-QX is available at Aetrix Electronics and suitable for automotive body electronics, portable medical sensors, industrial IoT nodes, and infotainment display subsystems requiring stable component supply with AEC-Q101 compliance and traceable sourcing.
Supply support for BZX38450-B6V2-QX 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 energy-efficient solutions.
The BZX38450-Q series belongs to Nexperia's automotive-grade Zener regulator portfolio, designed specifically for low-current, high-stability voltage reference needs in harsh-environment electronic control units.
FAQ
What is the maximum reverse voltage before breakdown for BZX38450-B6V2-QX?
The nominal Zener voltage is 6.2 V at 50 µA test current, with guaranteed minimum and maximum values of 6.08 V and 6.32 V respectively. Breakdown occurs within this band; operation above 6.32 V risks exceeding specified differential resistance and thermal limits.
Can BZX38450-B6V2-QX be used in series for higher voltage regulation?
No - this device is not characterized or qualified for series connection. Its thermal resistance, leakage profile, and Zener impedance are optimized for single-diode shunt operation. Cascading introduces mismatched temperature coefficients and uncontrolled current sharing.
Is the SOD323 package compatible with standard reflow profiles?
Yes - the SOD323 footprint complies with IPC-7351B and supports JEDEC J-STD-020D reflow profiles. Recommended peak temperature is 260 °C for ≤30 seconds, with ramp rates ≤3 °C/s, as validated in Nexperia's SOD323 reflow soldering documentation.
Does BZX38450-B6V2-QX require external current-limiting resistors?
Yes - like all Zener diodes, it must be used with a series current-limiting resistor to control IZ within 50 µA to 5 mA range. Typical design uses 10 kΩ–100 kΩ depending on input voltage and load current to maintain regulation while staying within 300 mW Ptot.
BZX38450-B6V2-QX 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):
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX38450-B6V2-QX FAQ
1.How can I place an order for BZX38450-B6V2-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-B6V2-QX 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-B6V2-QX reliable?
The price and inventory of BZX38450-B6V2-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX38450-B6V2-QX is usually 5 days.
3.What payment methods are accepted for BZX38450-B6V2-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-B6V2-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-B6V2-QX?
BZX38450-B6V2-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-B6V2-QX 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-B6V2-QX?
For technical support, including BZX38450-B6V2-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-B6V2-QX requirements.
6.How does Aetrix verify that BZX38450-B6V2-QX is sourced from the original manufacturer or authorized distributors?
All BZX38450-B6V2-QX 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-B6V2-QX meets industry standards.
7.What is the process for return or replacement of BZX38450-B6V2-QX?
All BZX38450-B6V2-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-B6V2-QX, 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-B6V2-QX part is unused and in its original packaging.
Return procedure for BZX38450-B6V2-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-B6V2-QX Tags
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MMSZ5231B-7-F
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MM5Z5V1ST1G
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