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Nexperia USA Inc. BZX38450-C6V2-QF
- Part No.:
- BZX38450-C6V2-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-C6V2-QF.pdf
- Description:
- DIODE ZENER 6.2V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:3,876
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Product details
Overview
BZX38450-C6V2-QF from Nexperia is a low-current Zener voltage regulator diode in SOD323 (SC-76) package, designed for precision voltage reference and regulation at 6.2 V nominal with ±5 % tolerance, 160 Ω differential resistance at 5 mA, and 0.4 mV/K temperature coefficient - used in automotive sensor biasing, portable battery monitoring, and low-power MCU reset circuits.
For engineers reviewing the BZX38450-C6V2-QF datasheet, BZX38450-C6V2-QF pinout, BZX38450-C6V2-QF application, or BZX38450-C6V2-QF equivalent, key selection criteria include low test current (50 µA), AEC-Q101 qualification, 300 mW power rating, and optimized leakage behavior for noise-sensitive analog front-ends.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable 6.2 V output across load variations using reverse-biased Zener breakdown. Its specified 50 µA test current enables ultra-low standby current draw, critical for battery-powered systems.
The C-series variant features intentional minor leakage rise to reduce switching transients and improve high-frequency noise immunity, per AN90031. Thermal resistance is 110 K/W junction-to-solder-point, supporting reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.2 V ±5 % at IZ = 50 µA - defines precise regulation point for low-bias reference applications |
| Differential Resistance | 160 Ω max at IZ = 5 mA - ensures minimal output voltage shift under small load changes |
| Temperature Coefficient | +0.4 mV/K - provides near-zero drift over automotive temperature range (−40 °C to +125 °C) |
| Forward Voltage | 0.9 V max at IF = 10 mA - enables predictable forward conduction for dual-direction protection schemes |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C - supports continuous operation on standard FR4 PCB without heatsinking |
| Reverse Current | 1.0 µA max at VR = 5 V - guarantees low quiescent current in always-on monitoring circuits |
| Junction Temperature | 150 °C max - enables use in under-hood automotive environments with validated thermal derating |
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 marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker determines correct orientation during PCB layout |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes Zener conduction path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTOL, TC, HAST, and ESD testing per JESD47 |
| Low 50 µA test current | Enables stable regulation in microamp-level bias networks for IoT sensors and wearables |
| Optimized leakage profile | Intentional minor IR increase improves transient response and reduces broadband noise in analog signal chains |
| 110 K/W Rth(j-sp) | Allows direct thermal coupling to PCB copper pour for effective heat dissipation without thermal vias |
| ±5 % voltage tolerance | Supports cost-sensitive designs where tighter tolerance is unnecessary, reducing BOM cost vs. ±2 % B-series |
Applications
| Automotive Cabin Sensor Biasing | Portable Battery Voltage Monitor |
|---|---|
Use Scenario: Providing stable 6.2 V reference for MEMS pressure and humidity sensors in HVAC control modules. IC Role / Device Role / Timing Role: Shunt voltage reference regulating sensor excitation voltage independent of battery decay. Use Value: Maintains sensor accuracy across 9–16 V battery range while drawing only 50 µA, extending module standby life. |
Use Scenario: Monitoring single-cell Li-ion voltage in Bluetooth earbuds during charging and discharge cycles. IC Role / Device Role / Timing Role: Low-current Zener clamp establishing threshold for fuel-gauge ADC input scaling. Use Value: Enables accurate state-of-charge estimation down to 2 µA system sleep current without reference drift. |
| Industrial PLC Input Protection | Medical Wearable Reset Circuit |
Use Scenario: Protecting 24 V digital input channels against overvoltage transients in factory automation controllers. IC Role / Device Role / Timing Role: Clamp diode absorbing surge energy while holding input logic threshold at 6.2 V. Use Value: Limits transient-induced false triggering with 160 Ω dynamic impedance and 40 W non-repetitive peak power handling. |
Use Scenario: Generating clean, temperature-stable reset signal for ultra-low-power ECG SoC during cold-start battery insertion. IC Role / Device Role / Timing Role: Precision Zener reference feeding comparator-based POR circuit with <1 µA leakage. Use Value: Guarantees deterministic reset assertion at exactly 6.2 V ±5 % across −20 °C to +70 °C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX38450-B6V2-Q | ±2 % tolerance, 160 Ω rdiff, same 6.2 V nominal but tighter voltage spec | Required where reference accuracy > ±3 % is mandated (e.g., calibration equipment) | Select when absolute voltage precision outweighs cost sensitivity; otherwise BZX38450-C6V2-Q offers optimal balance |
| MMSZ5234B-7-F | 6.2 V ±5 %, 500 mW Ptot, SOD-123 package, higher 1000 Ω rdiff at 20 mA | Suitable for higher-power regulation but less stable under light loads due to higher dynamic impedance | Choose only if board space allows larger SOD-123 footprint and system requires >300 mW dissipation capability |
Compared with BZX38450-B6V2-Q, this C-series part trades ±2 % tolerance for lower cost and identical thermal performance; versus MMSZ5234B-7-F, it delivers superior low-current stability and smaller SOD323 footprint at reduced power rating.
Availability
BZX38450-C6V2-QF is available at Aetrix Electronics and suitable for automotive sensor biasing, portable battery monitoring, and industrial PLC input protection requiring stable component supply with AEC-Q101 compliance and traceable sourcing.
Supply support for BZX38450-C6V2-QF 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.
This device belongs to the BZX38450-Q series of low-current Zener regulators, engineered specifically for AEC-Q101-compliant automotive subsystems and battery-constrained portable electronics where precision, low leakage, and thermal robustness are essential.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The nominal Zener voltage is 6.2 V, with guaranteed breakdown occurring between 5.89 V and 6.51 V at IZ = 50 µA. Absolute maximum reverse voltage is not defined - operation beyond the specified VZ range risks uncontrolled conduction or thermal runaway. The device is rated for non-repetitive 40 W surge at 100 µs pulse width, corresponding to ~200 V transient clamping capability under defined conditions.
Does this part require a series resistor in typical Zener regulator configurations?
Yes - a current-limiting resistor is mandatory to set the Zener operating current within 50 µA to 5 mA range. For example, with 12 V supply and target 2 mA Zener current, a 3.0 kΩ resistor yields 6.2 V output with 2.96 mW dissipation in the resistor and 12.4 mW in the diode. Resistor value must ensure minimum current remains above 50 µA across all input and load conditions.
How does the "C" suffix differ from "B" in the BZX38450-Q series?
The "C" suffix denotes ±5 % voltage tolerance and intentionally elevated leakage current optimized for fast switching and noise reduction, per application note AN90031. In contrast, "B" parts offer ±2 % tolerance and lower leakage, prioritizing precision over transient performance. Both share identical package, power rating, and thermal characteristics.
Can this diode be used in bidirectional ESD protection configurations?
No - BZX38450-C6V2-QF is a unidirectional Zener diode optimized for reverse-biased regulation. Its forward voltage is 0.9 V max, but it lacks symmetric clamping behavior or specified ESD robustness (e.g., IEC 61000-4-2). For bidirectional protection, dedicated TVS diodes like PESD5V0S1BA should be used instead.
BZX38450-C6V2-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):
- 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:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX38450-C6V2-QF FAQ
1.How can I place an order for BZX38450-C6V2-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-C6V2-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-C6V2-QF reliable?
The price and inventory of BZX38450-C6V2-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-C6V2-QF is usually 5 days.
3.What payment methods are accepted for BZX38450-C6V2-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-C6V2-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-C6V2-QF?
BZX38450-C6V2-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-C6V2-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-C6V2-QF?
For technical support, including BZX38450-C6V2-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-C6V2-QF requirements.
6.How does Aetrix verify that BZX38450-C6V2-QF is sourced from the original manufacturer or authorized distributors?
All BZX38450-C6V2-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-C6V2-QF meets industry standards.
7.What is the process for return or replacement of BZX38450-C6V2-QF?
All BZX38450-C6V2-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-C6V2-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-C6V2-QF part is unused and in its original packaging.
Return procedure for BZX38450-C6V2-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-C6V2-QF Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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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
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
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