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Nexperia USA Inc. BZX38450-C9V1-QF
- Part No.:
- BZX38450-C9V1-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-C9V1-QF.pdf
- Description:
- DIODE ZENER 9.1V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:3,170
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Product details
Overview
BZX38450-C9V1-QF from Nexperia is a low-current Zener voltage regulator diode in SOD323 (SC-76) package, providing 9.1 V nominal regulation at 50 µA test current with ±5 % tolerance, 100 Ω differential resistance at 5 mA, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX38450-C9V1-QF datasheet, BZX38450-C9V1-QF pinout, BZX38450-C9V1-QF application, or BZX38450-C9V1-QF equivalent, this device serves as a precision, low-bias voltage reference in battery-powered sensor nodes, automotive body control modules, and portable instrumentation requiring stable 9.1 V clamping under microampere bias conditions.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 8.65 V to 9.56 V at IZ = 50 µA, exhibiting a temperature coefficient of +3.8 mV/K and diode capacitance of 150 pF at 0 V and 1 MHz. Its intentional minor leakage rise improves switching speed and noise performance per AN90031.
Designed for low-power regulation, it delivers 300 mW total power dissipation at Tamb ≤ 25 °C on FR4 PCB, with thermal resistance from junction to ambient of 415 K/W and junction-to-solder-point of 110 K/W - enabling reliable operation in thermally constrained automotive and portable environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 9.1 V at IZ = 50 µA - sets precise clamping threshold for low-bias circuits |
| Voltage Tolerance | ±5 % (C-series) - enables cost-effective selection where tighter tolerance is not required |
| Differential Resistance | 100 Ω at IZ = 5 mA - determines output impedance and regulation stability under load variation |
| Forward Voltage | ≤ 0.9 V at IF = 10 mA - ensures minimal forward conduction loss in bidirectional protection schemes |
| Power Dissipation | 300 mW at Tamb ≤ 25 °C - defines maximum continuous DC power handling on standard FR4 PCB |
| Junction Temperature | −55 °C to +150 °C - supports operation across full automotive ambient range |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test qualification for discrete semiconductors |
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 indicated by marking bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal during Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; establishes reference polarity for clamping |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables use in ultra-low-power battery systems without loading the source |
| Optimized leakage profile | Intentional minor rise in leakage current - reduces switching noise and improves transient response in signal conditioning |
| Automotive-grade reliability | AEC-Q101 qualified - meets stress-test requirements for vibration, temperature cycling, and humidity in vehicle ECUs |
| Small-footprint packaging | SOD323 (1.7 mm × 1.25 mm) - saves board space in dense automotive and portable PCB layouts |
Applications
| Automotive Body Control Unit | Portable Gas Sensor Interface |
|---|---|
Use Scenario: Voltage reference for analog front-end of door module MCU supplying LIN transceiver and LED drivers. IC Role / Device Role / Timing Role: Zener clamp providing stable 9.1 V rail for ADC reference and level-shifting circuitry. Use Value: ±5 % tolerance and AEC-Q101 qualification ensure long-term accuracy and functional safety compliance in 15-year vehicle life cycles. |
Use Scenario: Biasing and signal conditioning for electrochemical CO sensor powered by coin cell. IC Role / Device Role / Timing Role: Low-current voltage reference establishing sensor excitation voltage and ADC input scaling. Use Value: 50 µA test current enables stable regulation without draining 20 mA-hr CR2032 battery over months of standby operation. |
| Industrial IoT Edge Node | USB-C Power Negotiation Monitor |
Use Scenario: Voltage clamping for RS-485 transceiver supply rail in battery-backed remote telemetry unit. IC Role / Device Role / Timing Role: Overvoltage protection and rail stabilization for isolated communication ICs operating from wide-input buck converter. Use Value: 150 pF capacitance and fast switching behavior minimize signal distortion on 250 kbps differential bus lines. |
Use Scenario: Reference voltage generation for CC line monitoring circuit in USB-C PD sink adapter. IC Role / Device Role / Timing Role: Precision 9.1 V Zener defining detection threshold for 9 V PDO negotiation state machine. Use Value: +3.8 mV/K temperature coefficient allows predictable drift compensation in firmware-based voltage validation logic. |
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-B9V1-Q | ±2 % tolerance, 69 Ω rdiff at 5 mA, +3.8 mV/K SZ | Higher precision required in feedback loops of switching regulators | Select when tighter voltage accuracy outweighs cost sensitivity |
| MMSZ5240B-TP | ±5 % tolerance, 17 Ω rdiff, 500 mW Ptot, no AEC-Q101 | Consumer-grade power management with higher power margin needed | Choose only for non-automotive designs where thermal derating headroom is critical |
Compared with BZX38450-C9V1-QF, the BZX38450-B9V1-Q offers tighter tolerance and lower dynamic impedance but lacks the optimized leakage profile for noise-sensitive signal paths; MMSZ5240B-TP provides higher power handling but omits automotive qualification and exhibits significantly lower differential resistance - making it unsuitable for low-bias, high-stability applications.
Availability
BZX38450-C9V1-QF is available at Aetrix Electronics and suitable for automotive body control units, portable gas sensor interfaces, and industrial IoT edge nodes requiring stable component supply with guaranteed AEC-Q101 compliance and traceable sourcing.
Supply support for BZX38450-C9V1-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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and automotive-grade robustness.
The BZX38450-Q series belongs to Nexperia's automotive-qualified Zener diode product line, engineered specifically for low-current voltage regulation in space-constrained, thermally demanding environments such as vehicle ECUs and portable safety-critical sensors.
FAQ
What is the maximum reverse current at 9.1 V for BZX38450-C9V1-QF?
At VR = 9.1 V and Tj = 25 °C, the typical reverse current is 0.1 µA. The datasheet specifies a maximum IR of 0.1 µA at VR = 9.1 V for C-series devices, confirmed in Table 8 under "Reverse current IR (µA)" column for BZX38450-C9V1-Q.
Can BZX38450-C9V1-QF be used in series for higher voltage regulation?
No - the BZX38450-C9V1-QF is not characterized or rated for series connection. Its differential resistance, temperature coefficient mismatch, and leakage current variation between units would cause uneven voltage distribution and thermal runaway risk. Use a single higher-voltage Zener or dedicated programmable shunt regulator instead.
Is the SOD323 package compatible with standard reflow profiles?
Yes - the SOD323 package is qualified for lead-free reflow soldering per J-STD-020. Figure 10 provides the recommended footprint with 0.5 mm solder land width and 0.6 mm solder resist opening, supporting peak temperatures up to 260 °C for ≤ 30 seconds, consistent with IPC Class 3 assembly requirements.
Does the "QF" suffix indicate tape-and-reel packaging?
Yes - the "QF" suffix denotes that BZX38450-C9V1-QF is supplied in 10,000-piece 8 mm tape-and-reel format per ordering information in Table 3, compliant with EIA-481-D standards and optimized for high-speed SMT placement equipment.
BZX38450-C9V1-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):
- 9.1 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 6.9 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-C9V1-QF FAQ
1.How can I place an order for BZX38450-C9V1-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-C9V1-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-C9V1-QF reliable?
The price and inventory of BZX38450-C9V1-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-C9V1-QF is usually 5 days.
3.What payment methods are accepted for BZX38450-C9V1-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-C9V1-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-C9V1-QF?
BZX38450-C9V1-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-C9V1-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-C9V1-QF?
For technical support, including BZX38450-C9V1-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-C9V1-QF requirements.
6.How does Aetrix verify that BZX38450-C9V1-QF is sourced from the original manufacturer or authorized distributors?
All BZX38450-C9V1-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-C9V1-QF meets industry standards.
7.What is the process for return or replacement of BZX38450-C9V1-QF?
All BZX38450-C9V1-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-C9V1-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-C9V1-QF part is unused and in its original packaging.
Return procedure for BZX38450-C9V1-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-C9V1-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
Diodes Incorporated
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