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Nexperia USA Inc. BZX38450-C8V2-QF
- Part No.:
- BZX38450-C8V2-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-C8V2-QF.pdf
- Description:
- DIODE ZENER 8.2V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:23,890
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Product details
Overview
BZX38450-C8V2-QF from Nexperia is a low-current Zener voltage regulator diode in SOD323 (SC-76) package, rated for 8.2 V nominal regulation at 50 µA test current, with ±5 % tolerance, 300 mW total power dissipation, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX38450-C8V2-QF datasheet, BZX38450-C8V2-QF pinout, BZX38450-C8V2-QF application, or BZX38450-C8V2-QF equivalent, key selection criteria include low-bias operation at 50 µA, thermal resistance of 110 K/W to solder point, 80 Ω differential resistance at 5 mA, and cathode-anode polarity marking per SOD323 outline.
Technical Context
This Zener diode operates in reverse breakdown mode with specified regulation voltage of 7.79 V (min) to 8.61 V (max) at IZ = 50 µA, exhibiting a temperature coefficient of +3.2 mV/K and diode capacitance of 150 pF at 0 V and 1 MHz.
It delivers stable reference voltage under low-current bias conditions, supports non-repetitive peak reverse power up to 40 W (100 µs pulse), and maintains junction temperature ≤150 °C with ambient operating range from −55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 8.2 V - precise regulation point at 50 µA test current, ±5 % tolerance (7.79–8.61 V) |
| Differential Resistance | 80 Ω - low dynamic impedance at 5 mA, ensuring stable output under small-signal load variation |
| Forward Voltage | 0.9 V max at 10 mA - enables predictable forward conduction behavior in protection or clamping roles |
| Total Power Dissipation | 300 mW - maximum steady-state power on FR4 PCB with single-sided copper, defines thermal derating envelope |
| Junction-to-Solder-Point Thermal Resistance | 110 K/W - critical for board-level thermal design when mounted on standard footprint |
| Reverse Current | 0.1 µA max at VR = 6.2 V - ultra-low leakage ensures minimal quiescent current draw in battery-powered systems |
| Temperature Coefficient | +3.2 mV/K - positive drift enables predictable voltage shift over temperature for compensation-aware designs |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic package, 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch; marking bar denotes cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; accepts reverse bias for Zener operation; marked with bar on package |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-biased path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - minimizes standby current in portable and energy-sensitive applications |
| AEC-Q101 qualification | Qualified for automotive-grade reliability - supports deployment in engine control, body electronics, and ADAS subsystems |
| Optimized leakage profile | Intentional minor rise in IR for C-series - improves switching speed and reduces noise in reference and feedback paths |
| Small-footprint packaging | SOD323 outline - enables high-density PCB layouts while maintaining thermal performance via solder-point conduction |
Applications
| Automotive Body Control Module (BCM) | Portable Medical Sensor Node |
|---|---|
Use Scenario: Voltage reference for microcontroller ADC and analog front-end in interior lighting and door module circuits. IC Role / Device Role / Timing Role: Zener regulator providing stable 8.2 V reference for precision analog signal conditioning. Use Value: AEC-Q101 qualification ensures long-term stability under thermal cycling and vibration; 300 mW rating accommodates transient surges without derating. |
Use Scenario: Low-power voltage clamp in wearable ECG front-end powered by coin-cell battery. IC Role / Device Role / Timing Role: Reverse-biased Zener limiting input swing to protect op-amp inputs during electrode contact events. Use Value: 50 µA test current and 0.1 µA leakage at 6.2 V minimize battery drain; SOD323 footprint saves space on compact flex PCB. |
| Industrial IoT Edge Node | Consumer Audio DAC Reference |
Use Scenario: Precision biasing for RS-485 transceiver supply rail in battery-backed remote sensor gateway. IC Role / Device Role / Timing Role: Low-current shunt regulator stabilizing local 8.2 V rail for isolated communication IC. Use Value: +3.2 mV/K temperature coefficient allows predictable calibration offset; 150 pF capacitance avoids signal integrity issues at 1 Mbps data rates. |
Use Scenario: Analog voltage reference for 24-bit audio DAC in portable headphone amplifier. IC Role / Device Role / Timing Role: Zener-based reference source feeding DAC's internal bandgap circuitry. Use Value: 80 Ω differential resistance ensures minimal noise coupling into sensitive audio ground; SOD323 placement avoids mechanical stress-induced parameter drift. |
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-B8V2-Q | ±2 % tolerance (7.94–8.46 V), lower rdiff (60 Ω at 5 mA), tighter tempco (±0.4 mV/K) | Higher precision needed in metrology or calibration circuits where 0.2 V window matters | Select for improved accuracy and lower noise; requires tighter layout control due to higher sensitivity to thermal gradients |
| MMSZ5231B-TP | Same 8.2 V nominal, ±5 %, but 500 mW Ptot, SOD-123 package, 100 Ω rdiff, no AEC-Q101 | General-purpose industrial use where automotive qualification is not required | Choose for higher power margin and broader distributor availability; avoid in safety-critical automotive modules |
Compared with BZX38450-C8V2-QF, the BZX38450-B8V2-Q offers tighter regulation at cost of reduced thermal margin in SOD323, while MMSZ5231B-TP trades AEC-Q101 compliance for higher power handling and larger footprint-making each suitable only where their specific trade-offs align with system requirements.
Availability
BZX38450-C8V2-QF is available at Aetrix Electronics and suitable for automotive body electronics, portable medical sensors, and industrial IoT edge nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX38450-C8V2-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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
BZX38450-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for low-current, high-stability voltage regulation in space-constrained and thermally demanding automotive and portable applications.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The BZX38450-C8V2-QF has a nominal Zener voltage of 8.2 V with guaranteed minimum of 7.79 V and maximum of 8.61 V at 50 µA. Its absolute maximum non-repetitive peak reverse voltage is defined by the 40 W surge rating at 100 µs, translating to ~280 V for that pulse width-however, continuous reverse operation must remain within the specified 8.2 V ±5 % regulation band for stable performance.
How does the "C" suffix affect electrical behavior versus "B" variants?
The "C" suffix indicates ±5 % tolerance and incorporates an intentional minor rise in reverse leakage current, optimized per AN90031 for faster switching transitions and reduced noise in feedback loops. This differs from "B" variants (±2 %, lower leakage), making "C" versions better suited for low-noise analog references where tight tolerance is secondary to dynamic performance.
Can this diode be used in series or parallel configurations for higher voltage or current capability?
No-Zener diodes like BZX38450-C8V2-QF are not designed for parallel operation due to mismatched breakdown characteristics causing current hogging. Series connection is possible for higher voltage, but requires individual current-limiting resistors and thermal derating; Nexperia does not characterize or recommend such configurations for this part.
Is the SOD323 package compatible with standard reflow profiles for lead-free assembly?
Yes-the SOD323 package is qualified for lead-free reflow per J-STD-020, with peak temperature up to 260 °C. Figure 10 in the datasheet provides the recommended solder land pattern and paste volume (0.5 mm × 0.6 mm pads, 0.5 mm stencil aperture), and thermal resistance data confirms safe operation when mounted per specified FR4 PCB layout.
BZX38450-C8V2-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):
- 8.2 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 6.2 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-C8V2-QF FAQ
1.How can I place an order for BZX38450-C8V2-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-C8V2-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-C8V2-QF reliable?
The price and inventory of BZX38450-C8V2-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-C8V2-QF is usually 5 days.
3.What payment methods are accepted for BZX38450-C8V2-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-C8V2-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-C8V2-QF?
BZX38450-C8V2-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-C8V2-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-C8V2-QF?
For technical support, including BZX38450-C8V2-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-C8V2-QF requirements.
6.How does Aetrix verify that BZX38450-C8V2-QF is sourced from the original manufacturer or authorized distributors?
All BZX38450-C8V2-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-C8V2-QF meets industry standards.
7.What is the process for return or replacement of BZX38450-C8V2-QF?
All BZX38450-C8V2-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-C8V2-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-C8V2-QF part is unused and in its original packaging.
Return procedure for BZX38450-C8V2-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-C8V2-QF Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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