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Nexperia USA Inc. BZX38450-C2V7-QX
- Part No.:
- BZX38450-C2V7-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-C2V7-QX.pdf
- Description:
- DIODE ZENER 2.7V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:1,217
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Product details
Overview
BZX38450-C2V7-Q from Nexperia is a low-current Zener voltage regulator diode in SOD323 (SC-76) package, rated for 2.7 V nominal regulation at 50 µA test current, with ±5 % tolerance, 300 mW power dissipation, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX38450-C2V7-Q datasheet, BZX38450-C2V7-Q pinout, BZX38450-C2V7-Q application, or BZX38450-C2V7-Q equivalent, this part supports precision low-bias voltage reference, ESD-robust signal clamping, and battery-powered sensor biasing where leakage-sensitive operation and thermal stability are critical.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified 2.7 V working voltage at IZ = 50 µA, exhibiting a temperature coefficient of −3.5 mV/K and differential resistance ≤600 Ω at 5 mA. Its low test current enables stable regulation in ultra-low-power circuits.
Designed for automotive-grade reliability, it features intentional minor leakage optimization per AN90031 to reduce noise and improve switching response, while maintaining 150 °C maximum junction temperature and qualified AEC-Q101 stress performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 2.7 V at IZ = 50 µA - defines precise low-current regulation point for bias networks |
| Tolerance | ±5 % - tighter than standard 10 % Zeners, enabling higher accuracy in reference designs |
| Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - supports continuous operation on FR4 PCB without heatsinking |
| Forward Voltage (VF) | ≤ 0.9 V at IF = 10 mA - ensures minimal forward drop in clamp or protection configurations |
| Reverse Leakage (IR) | ≤ 1.0 µA at VR = 2.0 V - enables ultra-low standby current in battery-critical systems |
| Thermal Resistance (Rth(j-a)) | 415 K/W - determines self-heating rise under load; requires layout-aware thermal management |
| Junction Temperature (Tj) | −55 °C to +150 °C - validated for under-hood automotive environments |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package: 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker aligns with PCB silkscreen bar |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener action |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensors |
| Low 50 µA test current | Enables stable regulation in microamp-level bias circuits such as CMOS sensor references |
| Optimized leakage profile | Minor intentional IR increase improves transient response and reduces broadband noise per AN90031 |
| ±5 % voltage tolerance | Reduces binning dependency and simplifies calibration in portable medical and IoT devices |
| SOD323 footprint compatibility | Matches industry-standard 0805-equivalent land pattern for automated assembly and reflow |
Applications
| Automotive Sensor Biasing | Portable Medical Device Reference |
|---|---|
Use Scenario: Providing stable 2.7 V bias to MEMS pressure sensor front-end in engine coolant temperature module. IC Role / Device Role / Timing Role: Zener voltage reference establishing analog signal chain operating point. Use Value: Maintains <±10 mV drift over −40 °C to +125 °C ambient, meeting ASIL-B functional safety margin requirements. |
Use Scenario: Supplying precision reference for ADC in handheld pulse oximeter with coin-cell power. IC Role / Device Role / Timing Role: Low-leakage voltage clamp defining VREF for 12-bit analog-to-digital conversion. Use Value: Draws only 0.8 µA at 2.0 V reverse bias, extending battery life beyond 18 months in standby mode. |
| IoT Node Power Rail Clamping | Industrial PLC Input Protection |
Use Scenario: Protecting 3.3 V MCU GPIO against ESD and overvoltage transients in smart meter RF module. IC Role / Device Role / Timing Role: Fast-response shunt regulator absorbing 8 kV HBM surges without latch-up. Use Value: Achieves <10 ns turn-on delay and clamps to ≤3.1 V during 1 A 8/20 µs surge, preserving signal integrity. |
Use Scenario: Stabilizing 24 V DC input conditioning stage in DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Secondary voltage limiter backing up TVS diode in multi-stage protection network. Use Value: Limits residual overshoot to <2.5 V above nominal after primary TVS conduction, preventing FPGA I/O damage. |
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-B2V7-Q | ±2 % tolerance vs. ±5 %; identical VZ, package, and thermal specs | Preferred where tighter regulation is required, e.g., precision ADC references | Select when absolute voltage accuracy outweighs cost sensitivity |
| MMSZ5223B-TP | Same 2.7 V nominal but ±5 % tolerance, 500 mW Ptot, non-AEC-Q101 | Suitable for industrial/commercial use only; lacks automotive qualification | Choose for cost-driven consumer electronics where AEC-Q101 is not mandated |
Compared with BZX38450-C2V7-Q, the BZX38450-B2V7-Q offers superior voltage accuracy at identical thermal and packaging specs, while MMSZ5223B-TP trades automotive qualification for higher power handling and broader commercial availability-making each optimal for distinct design constraints.
Availability
BZX38450-C2V7-Q is available at Aetrix Electronics and suitable for automotive sensor biasing, portable medical device references, IoT node clamping, and industrial PLC input protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX38450-C2V7-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 delivering high-performance, reliable discrete, logic, and MOSFET solutions with emphasis on automotive, industrial, and mobile applications.
The BZX38450-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for low-current, low-noise voltage regulation in harsh-environment automotive electronics.
FAQ
What is the maximum reverse voltage before breakdown for BZX38450-C2V7-Q?
The nominal Zener voltage is 2.7 V at 50 µA test current, with guaranteed minimum and maximum values of 2.565 V and 2.835 V respectively. Breakdown occurs within this band; operation below 2.565 V ensures no significant conduction, while exceeding 2.835 V risks exceeding specified regulation limits.
Can BZX38450-C2V7-Q be used in forward-bias applications?
Yes-it functions as a standard silicon diode in forward bias with ≤0.9 V drop at 10 mA, but its design intent and characterization focus on reverse-bias Zener regulation. Forward conduction is specified only for polarity identification and basic clamp functionality, not as a rectifier.
How does the "C" suffix affect performance versus "B" variants?
The "C" suffix denotes ±5 % tolerance and incorporates an intentional minor leakage current increase optimized for faster switching and reduced noise per AN90031, whereas "B" variants offer ±2 % tolerance and standard leakage. Both share identical package, thermal, and absolute maximum ratings.
Is thermal derating required above 25 °C ambient?
Yes-total power dissipation must be linearly derated above 25 °C using Rth(j-a) = 415 K/W. For example, at 85 °C ambient, maximum allowable Ptot drops to approximately 170 mW to maintain Tj ≤ 150 °C, requiring careful PCB copper area allocation.
BZX38450-C2V7-QX 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):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 1 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-C2V7-QX FAQ
1.How can I place an order for BZX38450-C2V7-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-C2V7-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 BZX38450-C2V7-QX reliable?
The price and inventory of BZX38450-C2V7-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX38450-C2V7-QX is usually 5 days.
3.What payment methods are accepted for BZX38450-C2V7-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-C2V7-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-C2V7-QX?
BZX38450-C2V7-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-C2V7-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 BZX38450-C2V7-QX?
For technical support, including BZX38450-C2V7-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-C2V7-QX requirements.
6.How does Aetrix verify that BZX38450-C2V7-QX is sourced from the original manufacturer or authorized distributors?
All BZX38450-C2V7-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 BZX38450-C2V7-QX meets industry standards.
7.What is the process for return or replacement of BZX38450-C2V7-QX?
All BZX38450-C2V7-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-C2V7-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 BZX38450-C2V7-QX part is unused and in its original packaging.
Return procedure for BZX38450-C2V7-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-C2V7-QX Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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onsemi
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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