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Nexperia USA Inc. BZX384-C8V2-QX
- Part No.:
- BZX384-C8V2-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C8V2-QX.pdf
- Description:
- DIODE ZENER 8.2V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,450
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Product details
Overview
BZX384-C8V2-Q from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 8.2 V nominal breakdown at 5 mA, with 300 mW total power dissipation and qualified to AEC-Q101 for automotive voltage reference and overvoltage protection circuits.
For engineers reviewing the BZX384-C8V2-Q datasheet, BZX384-C8V2-Q pinout, BZX384-C8V2-Q application, or BZX384-C8V2-Q equivalent, this part serves as a low-power, surface-mount Zener diode for precision DC voltage clamping, ESD-tolerant biasing, and stable reference generation in space-constrained automotive and industrial control modules.
Technical Context
This device operates in reverse-biased Zener breakdown mode with a specified 8.2 V working voltage at IZ = 5 mA, differential resistance ≤80 Ω, and temperature coefficient of +3.2 to +6.2 mV/K - indicating positive thermal drift optimized for mid-range voltage stabilization.
It supports non-repetitive peak reverse power dissipation up to 40 W (100 μs pulse), junction-to-ambient thermal resistance of 415 K/W on FR4 PCB, and reverse current ≤0.7 μA at VR = 7.7 V, enabling robust transient suppression without thermal runaway in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VZ | 7.7 V to 8.7 V at IZ = 5 mA - defines usable regulation window under production tolerance |
| Power Dissipation Ptot | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Differential Resistance rdif | ≤80 Ω - determines output impedance and load regulation sensitivity in shunt configuration |
| Reverse Current IR | ≤0.7 μA at VR = 7.7 V - ensures minimal leakage below knee voltage for low-quiescent circuits |
| Non-repetitive Peak Power | 40 W for 100 μs - enables surge immunity against short-duration transients like ISO 7637-2 pulses |
| Junction Temperature | −65 °C to +150 °C - supports operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including HTOL, temperature cycling, and ESD |
Pinout & Package
Package: SOD323 (SC-76), 2-pin surface-mount plastic package with cathode marked by bar on top surface; footprint per Figure 12 (reflow) and Figure 13 (wave soldering).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity mark aligns with PCB silkscreen bar |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction with cathode |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % voltage tolerance | Enables cost-effective regulation where tight accuracy is not required, e.g., supply rail clamping |
| AEC-Q101 qualification | Validated for automotive use including high-temp storage, accelerated life testing, and ESD robustness |
| Low thermal resistance (110 K/W to solder point) | Improves heat transfer to PCB copper, supporting higher pulsed power without local overheating |
| 40 W non-repetitive peak power | Withstands ISO 16750-2 load dump surges when used with series current-limiting resistor |
| SOD323 footprint compatibility | Matches industry-standard 2.7 mm × 1.6 mm land pattern for automated placement and reflow |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Stabilizing 8.2 V reference for microcontroller ADC input in door module power management. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable bias for analog front-end circuitry. Use Value: Maintains <±1 % reference drift across −40 °C to +125 °C ambient due to controlled temperature coefficient and AEC-Q101 thermal validation. |
Use Scenario: Clamping 0–10 V sensor output to prevent overvoltage damage to downstream op-amp inputs. IC Role / Device Role / Timing Role: Passive overvoltage protector placed at signal path entry point. Use Value: Limits transient excursions to ≤8.7 V with <0.7 μA leakage at 7.7 V, preserving signal integrity in 24 V industrial systems. |
| Consumer Power Adapter Feedback | LED Driver Bias Reference |
Use Scenario: Providing feedback voltage to optocoupler in isolated flyback converter secondary-side regulation. IC Role / Device Role / Timing Role: Precision Zener element setting error amplifier reference threshold. Use Value: Delivers stable 8.2 V reference with ≤80 Ω dynamic impedance, minimizing output ripple under variable load conditions. |
Use Scenario: Setting constant-current reference for linear LED driver IC in architectural lighting. IC Role / Device Role / Timing Role: Voltage reference source for current-sense amplifier bias network. Use Value: Ensures <±5 % LED current accuracy across operating temperature range using matched thermal coefficient with driver IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B8V2-Q | ±2 % tolerance (7.9–8.5 V), lower rdif (≤40 Ω), tighter tempco (±0.4 to +3.7 mV/K) | Better regulation stability in precision bias networks; higher cost | Select when reference accuracy >±3 % is required and thermal drift must be minimized |
| MMSZ4687T1G | ±5 % tolerance (7.7–8.7 V), same SOD-123 package, Ptot = 500 mW, rdif ≤100 Ω | Higher power rating allows larger series resistor for same surge energy absorption | Choose for higher continuous power margin or legacy SOD-123 board compatibility |
Compared with BZX384-C8V2-Q, the BZX384-B8V2-Q offers tighter regulation at the expense of cost and slightly reduced surge robustness, while MMSZ4687T1G trades smaller SOD323 size for greater thermal mass and higher steady-state power handling.
Availability
BZX384-C8V2-Q is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, consumer power adapter feedback loops, and LED driver bias networks requiring stable component supply with AEC-Q101 compliance.
Supply support for BZX384-C8V2-Q 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.
The BZX384-Q series belongs to Nexperia's automotive-grade Zener diode product line, engineered specifically for robust voltage reference and transient protection in harsh-environment electronic control units.
FAQ
What is the maximum continuous forward current for BZX384-C8V2-Q?
The device is not intended for forward conduction; its absolute maximum forward current is 250 mA per limiting values table, but typical operation occurs in reverse breakdown. Forward voltage is 0.9 V at 10 mA - sufficient only for brief test or ESD discharge paths, not sustained forward bias.
Can BZX384-C8V2-Q replace a 1N4735A in an existing design?
No - the 1N4735A is a 6.2 V, 1 W through-hole Zener in DO-41 package. BZX384-C8V2-Q is 8.2 V, 300 mW, SOD323 surface-mount with different thermal and surge characteristics. Direct replacement requires PCB redesign, power derating, and verification of transient response.
How does the ±5 % tolerance affect regulation accuracy in a 12 V supply rail clamp?
At 8.2 V nominal, ±5 % yields 7.7–8.7 V breakdown range. When used with a 1 kΩ series resistor on a 12 V rail, output clamps between 7.7 V and 8.7 V depending on unit variation - acceptable for non-critical biasing but insufficient for precision references requiring <±1 % stability.
Is thermal derating required above 25 °C ambient?
Yes - total power dissipation must be linearly derated above 25 °C at 2.4 mW/°C (300 mW ÷ (150 °C − 25 °C)), per thermal characteristics table. At 85 °C ambient, maximum continuous power drops to 156 mW to maintain Tj ≤ 150 °C on standard FR4 PCB.
BZX384-C8V2-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX384-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:
- 700 nA @ 5 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX384-C8V2-QX FAQ
1.How can I place an order for BZX384-C8V2-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C8V2-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 BZX384-C8V2-QX reliable?
The price and inventory of BZX384-C8V2-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-C8V2-QX is usually 5 days.
3.What payment methods are accepted for BZX384-C8V2-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C8V2-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C8V2-QX?
BZX384-C8V2-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C8V2-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 BZX384-C8V2-QX?
For technical support, including BZX384-C8V2-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C8V2-QX requirements.
6.How does Aetrix verify that BZX384-C8V2-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-C8V2-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 BZX384-C8V2-QX meets industry standards.
7.What is the process for return or replacement of BZX384-C8V2-QX?
All BZX384-C8V2-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C8V2-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 BZX384-C8V2-QX part is unused and in its original packaging.
Return procedure for BZX384-C8V2-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-C8V2-QX Tags
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