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Nexperia USA Inc. BZX38450-C8V2F
- Part No.:
- BZX38450-C8V2F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-C8V2F.pdf
- Description:
- DIODE ZENER 8.2V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:3,859
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Product details
Overview
BZX38450-C8V2F 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 8.2 V nominal regulation at 50 µA test current, with ±2 % tolerance, 80 Ω differential resistance at 5 mA, and 3.2 mV/K temperature coefficient - enabling stable operation in battery-powered sensor nodes and low-power microcontroller I/O protection circuits.
For engineers reviewing the BZX38450-C8V2F datasheet, BZX38450-C8V2F pinout, BZX38450-C8V2F application, or BZX38450-C8V2F equivalent, key selection criteria include its low 50 µA test current, tight ±2 % tolerance, SOD323 footprint compatibility, and intentional leakage optimization for noise-sensitive analog front-ends.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining a stable 8.2 V reverse breakdown across load variations while sinking only 50 µA under nominal bias. Its 80 Ω dynamic impedance at 5 mA ensures minimal output voltage drift under moderate current changes.
The ±2 % tolerance (C-series), 3.2 mV/K positive temperature coefficient, and 0.1 µA max reverse leakage at VR = 6.9 V support predictable thermal behavior in compact PCB layouts where self-heating must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 8.2 V at IZ = 50 µA - defines precise reference point for low-bias circuits |
| Tolerance | ±2 % - enables high-accuracy voltage clamping without trimming |
| Differential Resistance | 80 Ω at IZ = 5 mA - limits output voltage variation to <0.4 V over ±2 mA load change |
| Temperature Coefficient | +3.2 mV/K - provides predictable, linear VZ drift for thermal compensation design |
| Forward Voltage | 0.9 V at IF = 10 mA - ensures low-loss conduction in series protection configurations |
| Max Power Dissipation | 300 mW at Tamb ≤ 25 °C - supports continuous operation in FR4 PCB layouts with standard copper |
| Reverse Leakage | 0.1 µA max at VR = 6.9 V - minimizes standby current in always-on sensing nodes |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic package; 2 leads; 1.3 mm pitch; 1.7 mm × 1.25 mm × 0.95 mm body. Cathode identified by marking bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated voltage node; accepts reverse breakdown current during regulation |
| 2 | Anode (A) | Ground or low-potential reference; completes shunt path for excess current |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables use in µA-level battery-powered systems without loading error |
| Tight voltage tolerance | ±2 % (C-series) - eliminates need for post-assembly calibration in reference designs |
| Optimized leakage profile | Intentional minor leakage rise per AN90031 - reduces switching noise in ADC reference rails |
| Thermal stability | +3.2 mV/K coefficient - allows accurate prediction of VZ shift across −55 °C to +150 °C ambient |
| SMD footprint compatibility | SOD323 outline with 1.3 mm lead pitch - supports automated placement and reflow on dense mixed-signal PCBs |
Applications
| IoT Sensor Node Reference | Microcontroller I/O Clamp |
|---|---|
Use Scenario: Providing stable 8.2 V reference for analog-to-digital conversion in battery-operated environmental sensors. IC Role / Device Role / Timing Role: Shunt voltage reference diode regulating ADC input range and biasing op-amp rails. Use Value: 50 µA test current and ±2 % tolerance ensure <0.2 % full-scale error without external trimming or power-hungry regulators. |
Use Scenario: Protecting 3.3 V or 5 V MCU GPIO pins from transient overvoltage events. IC Role / Device Role / Timing Role: Low-leakage Zener clamp absorbing ESD spikes while minimizing standby current draw. Use Value: 0.1 µA max reverse leakage at 6.9 V prevents signal degradation during normal operation; 300 mW rating handles short-duration surges. |
| Portable Medical Monitor Bias | Low-Power Clock Buffer Reference |
Use Scenario: Generating clean bias voltages for ultra-low-noise instrumentation amplifiers in handheld diagnostics. IC Role / Device Role / Timing Role: Precision shunt regulator establishing stable DC offset for amplifier stages. Use Value: +3.2 mV/K temperature coefficient enables matched thermal tracking with silicon sensors, reducing drift-induced measurement error. |
Use Scenario: Supplying regulated voltage to clock buffer ICs in sleep-mode wearable devices. IC Role / Device Role / Timing Role: Low-current Zener setting reference level for LVCMOS clock signal integrity. Use Value: 80 Ω dynamic impedance maintains <10 mV ripple on 8.2 V rail under 1–2 mA dynamic load, preserving jitter performance. |
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-B8V2 | ±5 % tolerance, higher 150 Ω rdiff at 5 mA, no intentional leakage optimization | Acceptable for non-critical biasing where cost > precision; unsuitable for noise-sensitive references | Select when budget constraints outweigh accuracy requirements and thermal drift is less critical |
| MMSZ4687T1G | 8.2 V nominal, ±5 %, 100 Ω rdiff, SOD-123 package (larger footprint, 2.7 mm × 1.6 mm) | Compatible for board-level replacement if layout allows larger pad spacing; lacks C-series leakage tuning | Choose only if SOD323 footprint is unavailable and 0.2 mm height increase is acceptable |
Compared with BZX38450-C8V2F, the BZX384-B8V2 trades ±2 % accuracy and low-noise leakage behavior for lower cost, while MMSZ4687T1G offers similar electrical specs but requires PCB redesign due to SOD-123 size and lacks documented fast-switching leakage tuning.
Availability
BZX38450-C8V2F is available at Aetrix Electronics and suitable for IoT sensor nodes, portable medical monitors, microcontroller I/O protection, and low-power clock buffer reference circuits requiring stable component supply with guaranteed long-term continuity.
Supply support for BZX38450-C8V2F 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-performance, energy-efficient logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
BZX38450 belongs to Nexperia's low-current Zener regulator family, engineered specifically for precision voltage referencing in space-constrained, battery-powered applications where low test current and thermal predictability are essential.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The BZX38450-C8V2F has a nominal Zener voltage of 8.2 V at 50 µA, with a guaranteed working range of 7.79 V to 8.61 V (±2 %). Its absolute maximum non-repetitive peak reverse voltage is not specified separately - it is governed by the 40 W surge rating at 100 µs pulse width, corresponding to ~200 V transient for sub-microsecond events under defined thermal conditions.
Can this Zener diode be used in series with another to achieve higher reference voltage?
Yes, multiple BZX38450-C8V2F diodes may be connected in series to sum their Zener voltages, provided current remains within the 50 µA to 250 mA operating range and total power dissipation stays below 300 mW per device. Thermal coupling between devices must be considered, as mismatched temperature coefficients will cause voltage drift imbalance.
Does the "C" in BZX38450-C8V2F indicate automotive qualification?
No. The "C" denotes the ±2 % voltage tolerance grade within the BZX38450 series. This part is not AEC-Q200 qualified and is intended for industrial and consumer applications. Nexperia explicitly states in its legal disclaimers that non-automotive qualified products are unsuitable for automotive use without additional validation by the customer.
How does the intentional leakage optimization affect circuit noise performance?
Per Application Note AN90031, the controlled rise in leakage current in C-series devices (including BZX38450-C8V2F) reduces high-frequency switching noise during Zener transition, improving SNR in analog signal chains. This is confirmed by reduced broadband noise in oscilloscope measurements of reference rail ripple under dynamic load transients.
BZX38450-C8V2F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX38450
- 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:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX38450-C8V2F FAQ
1.How can I place an order for BZX38450-C8V2F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-C8V2F 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-C8V2F reliable?
The price and inventory of BZX38450-C8V2F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX38450-C8V2F is usually 5 days.
3.What payment methods are accepted for BZX38450-C8V2F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-C8V2F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-C8V2F?
BZX38450-C8V2F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-C8V2F 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-C8V2F?
For technical support, including BZX38450-C8V2F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-C8V2F requirements.
6.How does Aetrix verify that BZX38450-C8V2F is sourced from the original manufacturer or authorized distributors?
All BZX38450-C8V2F 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-C8V2F meets industry standards.
7.What is the process for return or replacement of BZX38450-C8V2F?
All BZX38450-C8V2F units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-C8V2F, 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-C8V2F part is unused and in its original packaging.
Return procedure for BZX38450-C8V2F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-C8V2F 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
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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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