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Nexperia USA Inc. BZX384-B2V7-QX
- Part No.:
- BZX384-B2V7-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-B2V7-QX.pdf
- Description:
- DIODE ZENER 2.7V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:4,537
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Product details
Overview
BZX384-B2V7-Q from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 2.7 V nominal breakdown at 5 mA, with 300 mW total power dissipation and AEC-Q101 qualification for automotive voltage reference and overvoltage protection circuits.
For engineers reviewing the BZX384-B2V7-Q datasheet, BZX384-B2V7-Q pinout, BZX384-B2V7-Q application, or BZX384-B2V7-Q equivalent, this page delivers verified electrical parameters, thermal behavior, automotive-grade reliability data, and real-world design context for low-power precision regulation in constrained PCB layouts.
Technical Context
This device operates as a reverse-biased Zener diode with a specified 2.7 V breakdown voltage at IZ = 5 mA, differential resistance ≤600 Ω, and temperature coefficient of −3.5 to 0.0 mV/K - enabling stable low-voltage reference generation across ambient temperatures from −65 °C to +150 °C.
Its 300 mW steady-state power rating and 40 W non-repetitive peak reverse power capability support transient suppression in automotive subsystems, while its 110 K/W junction-to-solder-point thermal resistance ensures reliable heat transfer on FR4 PCBs with standard SOD323 footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VZ | 2.65 V to 2.75 V at IZ = 5 mA - defines precise clamping threshold for 2.7 V rail regulation |
| Total Power Dissipation Ptot | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Differential Resistance rdif | ≤600 Ω at IZ = 5 mA - determines output impedance and regulation sensitivity to current variation |
| Reverse Current IR | ≤100 μA at VR = 1 V - ensures low leakage in standby mode for battery-powered systems |
| Junction Temperature Tj | −65 °C to +150 °C - supports operation in under-hood automotive environments without derating |
| AEC-Q101 Qualified | Yes - validated for automotive discrete semiconductor stress testing including HTGB, HTRB, and ESD |
| Package | SOD323 (SC-76) - 1.35 mm × 0.85 mm surface-mount footprint with cathode marking bar |
Pinout & Package
SOD323 (SC-76) plastic surface-mounted package with 2 leads; cathode marked by a visible bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-bias terminal where breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % voltage tolerance | Enables tighter regulation than ±5 % variants for precision biasing in sensor interfaces |
| AEC-Q101 qualification | Validates suitability for automotive body control modules, lighting drivers, and infotainment power rails |
| Non-repetitive peak power: 40 W | Provides surge immunity against load-dump transients up to 100 μs duration |
| Low thermal resistance: 110 K/W (j–sp) | Allows efficient heat transfer to PCB copper, reducing junction temperature rise during pulsed operation |
| Small SOD323 footprint | Supports high-density routing in space-constrained modules such as ADAS camera ECUs and motor controllers |
Applications
| Automotive Sensor Biasing | USB Port Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 2.7 V reference for analog front-end of tire pressure monitoring system (TPMS) sensors. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference potential for ADC input scaling. Use Value: ±2 % tolerance ensures consistent sensor gain calibration across production units without trimming. |
Use Scenario: Clamping VBUS line against ESD events and hot-plug overshoot in USB 2.0 peripheral designs. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between VBUS and GND to limit excursion to ≤2.75 V. Use Value: 40 W non-repetitive peak power rating absorbs IEC 61000-4-2 Level 4 (15 kV air) surges without failure. |
| Industrial PLC Input Protection | Low-Power MCU Reset Circuit |
|
Use Scenario: Protecting 3.3 V digital input channels of programmable logic controllers from field-wiring induced transients. IC Role / Device Role / Timing Role: Shunt regulator connected between input pin and ground to clamp overvoltage before it reaches the input buffer. Use Value: 100 μA max reverse leakage at 1 V ensures minimal loading on upstream signal sources during normal operation. |
Use Scenario: Generating clean reset signal for ARM Cortex-M0 microcontrollers in battery-operated IoT nodes. IC Role / Device Role / Timing Role: Zener-based voltage monitor feeding comparator input to assert reset when supply drops below 2.65 V. Use Value: −3.5 to 0.0 mV/K temperature coefficient minimizes drift-induced false resets across −40 °C to +85 °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 |
|---|---|---|---|
| BZX384-A2V7-Q | ±1 % tolerance (2.67–2.73 V), higher cost, identical package and thermal specs | Required only where tighter regulation is mandated by system-level accuracy budget | Select when reference stability < ±0.03 V is critical; otherwise BZX384-B2V7-Q offers optimal cost/performance balance |
| BZX384-C2V7-Q | ±5 % tolerance (2.50–2.90 V), lower cost, same power and thermal ratings | Suitable for non-critical biasing where 0.4 V window is acceptable | Choose for cost-sensitive consumer electronics where absolute voltage accuracy is secondary to BOM reduction |
Compared with BZX384-A2V7-Q, the BZX384-B2V7-Q trades 1 % tolerance for lower unit cost while retaining full AEC-Q101 compliance; versus BZX384-C2V7-Q, it delivers twice the voltage accuracy without sacrificing surge robustness or thermal performance.
Availability
BZX384-B2V7-Q is available at Aetrix Electronics and suitable for automotive sensor biasing, USB port protection, industrial PLC input conditioning, and low-power MCU reset circuitry requiring stable component supply with AEC-Q101 assurance.
Supply support for BZX384-B2V7-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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
The BZX384-Q series is part of Nexperia's automotive-qualified Zener diode portfolio, engineered specifically for precision voltage reference and transient suppression in harsh-environment electronic control units.
FAQ
What is the maximum continuous forward current for BZX384-B2V7-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 pulse test conditions - sustained forward bias risks thermal runaway and permanent damage.
How does the −3.5 to 0.0 mV/K temperature coefficient affect regulation accuracy over temperature?
This coefficient means the breakdown voltage decreases by up to 3.5 mV per Kelvin rise near 2.7 V - resulting in ~0.38 V drift from −40 °C to +125 °C. For applications needing tighter thermal stability, consider using the diode in constant-current bias or selecting higher-VZ variants with positive coefficients.
Can BZX384-B2V7-Q replace a 2.7 V TL431-based shunt regulator?
No - the TL431 is an adjustable precision shunt regulator with active feedback, while BZX384-B2V7-Q is a passive two-terminal Zener. It lacks current amplification, adjustable threshold, or dynamic response; use only where fixed 2.7 V clamping suffices and no feedback loop is required.
Is the SOD323 package compatible with standard reflow soldering profiles?
Yes - Nexperia specifies compatibility with JEDEC J-STD-020D reflow profiles. The recommended footprint uses 0.5 mm wide solder lands (2×), 0.6 mm spacing, and 1.5 mm length per pad; peak temperature must not exceed 260 °C for ≤30 seconds to avoid package delamination.
BZX384-B2V7-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):
- 2.7 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 20 µA @ 1 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-B2V7-QX FAQ
1.How can I place an order for BZX384-B2V7-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-B2V7-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-B2V7-QX reliable?
The price and inventory of BZX384-B2V7-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-B2V7-QX is usually 5 days.
3.What payment methods are accepted for BZX384-B2V7-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-B2V7-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-B2V7-QX?
BZX384-B2V7-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-B2V7-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-B2V7-QX?
For technical support, including BZX384-B2V7-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-B2V7-QX requirements.
6.How does Aetrix verify that BZX384-B2V7-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-B2V7-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-B2V7-QX meets industry standards.
7.What is the process for return or replacement of BZX384-B2V7-QX?
All BZX384-B2V7-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-B2V7-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-B2V7-QX part is unused and in its original packaging.
Return procedure for BZX384-B2V7-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-B2V7-QX Tags
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