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Nexperia USA Inc. BZX38450-C5V6-QX
- Part No.:
- BZX38450-C5V6-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-C5V6-QX.pdf
- Description:
- DIODE ZENER 5.6V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:34,335
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Product details
Overview
BZX38450-C5V6-Q from Nexperia is a low-current Zener voltage regulator diode in SOD323 (SC-76) package, designed for precision voltage reference and biasing in battery-powered systems. It delivers a nominal 5.6 V regulation at 50 µA test current, with ±5 % tolerance, 400 Ω differential resistance at 5 mA, and −2.0 mV/K temperature coefficient - enabling stable operation in automotive sensor interfaces and portable electronics.
For engineers reviewing the BZX38450-C5V6-Q datasheet, BZX38450-C5V6-Q pinout, BZX38450-C5V6-Q application, or BZX38450-C5V6-Q equivalent, key selection criteria include low-test-current regulation accuracy, AEC-Q101 qualification, thermal resistance (Rth(j-a) = 415 K/W), and SOD323 footprint compatibility with space-constrained PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode with specified regulation at IZ = 50 µA - optimized for ultra-low-bias circuits where quiescent current must remain below 100 µA. Its intentional leakage current profile improves switching speed and reduces noise in signal conditioning paths.
The device features a negative temperature coefficient of −2.0 mV/K at 5.6 V, ensuring predictable drift under ambient variation, and exhibits 120 pF capacitance at 0 V reverse bias - suitable for DC reference and low-frequency stabilization, not RF decoupling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 5.6 V at IZ = 50 µA - defines primary regulation point for low-power bias networks |
| Tolerance | ±5 % - supports cost-sensitive designs where tighter tolerance is unnecessary |
| Differential Resistance | 400 Ω at IZ = 5 mA - indicates moderate regulation stiffness under small-signal load changes |
| Temperature Coefficient | −2.0 mV/K - enables predictable voltage drift compensation in automotive ambient ranges |
| Forward Voltage | 0.9 V at IF = 10 mA - defines anode-cathode drop during forward conduction, relevant for polarity protection |
| Power Dissipation | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Junction Temperature | 150 °C - supports operation in under-hood automotive environments per AEC-Q101 |
Pinout & Package
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; marking bar identifies this terminal - reverse-biased during regulation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables use in microamp-level bias chains without loading error |
| AEC-Q101 qualification | Qualified for automotive applications - ensures reliability under thermal cycling, humidity, and mechanical stress |
| Optimized leakage profile | Intentional minor rise in IR - reduces switching transients and broadband noise in sensing front-ends |
| Thermal resistance | Rth(j-a) = 415 K/W - defines junction-to-ambient rise per watt; requires minimal copper pour for 300 mW operation |
Applications
| Automotive Cabin Sensors | Portable Medical Monitors |
|---|---|
Use Scenario: Voltage reference for analog front-end of HVAC temperature sensors and seat occupancy detectors. IC Role / Device Role / Timing Role: Zener reference diode providing stable 5.6 V bias to op-amp input stages and ADC reference dividers. Use Value: AEC-Q101 qualification and −2.0 mV/K TC ensure <±10 mV drift over −40 °C to +125 °C ambient, meeting ASIL-B sensor accuracy requirements. |
Use Scenario: Low-power voltage reference in handheld pulse oximeters and glucose meters. IC Role / Device Role / Timing Role: Precision shunt regulator supplying clean bias to photodiode transimpedance amplifiers and low-noise LDOs. Use Value: 50 µA test current and optimized leakage reduce standby current to <1 µA, extending single-CR2032 battery life beyond 12 months. |
| Industrial IoT Node Power Management | Consumer Audio Bias Networks |
Use Scenario: Reference generation for battery-monitoring ICs in wireless vibration sensors deployed on factory motors. IC Role / Device Role / Timing Role: Shunt regulator establishing accurate threshold for coulomb counting and state-of-charge estimation. Use Value: 400 Ω dynamic impedance maintains <0.5 % regulation error across 10–100 µA load variations typical of nanopower MCU sleep modes. |
Use Scenario: DC bias stabilization for Class-AB headphone amplifier inputs in compact Bluetooth speakers. IC Role / Device Role / Timing Role: Low-noise Zener providing fixed 5.6 V offset to eliminate crossover distortion in dual-supply op-amps. Use Value: Intentional leakage optimization suppresses 1/f noise below 10 kHz, achieving THD+N <0.002 % at 1 kHz full scale. |
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-B5V6 | ±2 % tolerance, 500 Ω rdiff at 5 mA, no AEC-Q101 qualification | Targeted at commercial-grade consumer products with tighter voltage tolerance needs | Select when ±2 % regulation accuracy outweighs automotive qualification requirements |
| MMSZ5232B-TP | ±5 % tolerance, 17 Ω rdiff at 20 mA, 500 mW Ptot, SOD-123 package | Higher power and lower impedance suit higher-current analog rails, but larger footprint | Choose for non-automotive industrial systems needing stronger regulation under >5 mA loads |
Compared with BZX38450-C5V6-Q, BZX384-B5V6 offers tighter tolerance but lacks automotive qualification and low-current optimization, while MMSZ5232B-TP provides superior regulation stiffness at higher currents but sacrifices space efficiency and AEC-Q101 compliance.
Availability
BZX38450-C5V6-Q is available at Aetrix Electronics and suitable for automotive cabin sensors, portable medical monitors, and industrial IoT node power management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX38450-C5V6-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 leading semiconductor manufacturer specializing in high-performance, reliable discrete and logic devices, with global R&D and manufacturing infrastructure focused on automotive, industrial, and mobile markets.
The BZX38450-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for low-current, low-noise voltage reference and biasing in safety-conscious automotive and portable electronics applications.
FAQ
What is the maximum reverse voltage before breakdown for BZX38450-C5V6-Q?
The nominal Zener voltage is 5.6 V at IZ = 50 µA, with guaranteed minimum and maximum values of 5.32 V and 5.88 V respectively. Breakdown begins gradually above ~4.5 V, but regulation is only specified within the 5.32–5.88 V band under defined test conditions.
Can BZX38450-C5V6-Q be used in forward conduction mode?
Yes - it functions as a standard silicon diode in forward bias, with VF ≤ 0.9 V at IF = 10 mA. However, its design intent is reverse-bias regulation; forward use is limited to polarity protection or basic clamping where 0.9 V drop is acceptable.
Is thermal derating required above 25 °C ambient?
Yes - total power dissipation must be linearly derated above 25 °C at 2.4 mW/°C (based on Rth(j-a) = 415 K/W). At 85 °C ambient, maximum allowable Ptot drops to 156 mW to maintain Tj ≤ 150 °C.
Does the cathode marking align with industry-standard SOD323 orientation?
Yes - the cathode (pin 1) is identified by a visible bar on the top surface, consistent with JEDEC SC-76 and IEC 60747-2 standards. Pin 1 is the leftmost terminal when the marking bar is oriented horizontally and viewed from the top with leads pointing downward.
BZX38450-C5V6-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):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 4 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-C5V6-QX FAQ
1.How can I place an order for BZX38450-C5V6-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-C5V6-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-C5V6-QX reliable?
The price and inventory of BZX38450-C5V6-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-C5V6-QX is usually 5 days.
3.What payment methods are accepted for BZX38450-C5V6-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-C5V6-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-C5V6-QX?
BZX38450-C5V6-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-C5V6-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-C5V6-QX?
For technical support, including BZX38450-C5V6-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-C5V6-QX requirements.
6.How does Aetrix verify that BZX38450-C5V6-QX is sourced from the original manufacturer or authorized distributors?
All BZX38450-C5V6-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-C5V6-QX meets industry standards.
7.What is the process for return or replacement of BZX38450-C5V6-QX?
All BZX38450-C5V6-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-C5V6-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-C5V6-QX part is unused and in its original packaging.
Return procedure for BZX38450-C5V6-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-C5V6-QX 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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