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Nexperia USA Inc. BZX384-C5V1-QX
- Part No.:
- BZX384-C5V1-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C5V1-QX.pdf
- Description:
- DIODE ZENER 5.1V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:8,790
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Product details
Overview
BZX384-C5V1-Q from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 5.1 V nominal breakdown at 5 mA, with 480 Ω max differential resistance, 2 μA max reverse current at 3.8 V, and AEC-Q101 qualification for automotive power rail stabilization.
For engineers reviewing the BZX384-C5V1-Q datasheet, BZX384-C5V1-Q pinout, BZX384-C5V1-Q application, or BZX384-C5V1-Q equivalent, this part supports precision low-power voltage reference, overvoltage clamping in ECU sensor interfaces, and reverse-polarity protection circuits where tight thermal coefficient (−2.7 to +1.2 mV/K) and 300 mW total power dissipation are critical design constraints.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its −2.7 to +1.2 mV/K temperature coefficient ensures predictable drift between 25 °C and 150 °C, and its 480 Ω max dynamic impedance enables effective regulation at 5 mA test current.
The device sustains non-repetitive peak reverse power up to 40 W for 100 μs pulses and exhibits 300 mW steady-state power dissipation on FR4 PCB with standard footprint. Its 150 °C maximum junction temperature and AEC-Q101 qualification confirm suitability for under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 5.1 V at IZ = 5 mA - defines regulated output level for reference and clamp circuits |
| Zener Tolerance | ±5 % - sets absolute voltage window of 4.80 V to 5.40 V at 25 °C |
| Differential Resistance | ≤480 Ω - determines regulation stiffness and output voltage variation under load changes |
| Reverse Current | ≤2 μA at VR = 3.8 V - ensures low leakage before breakdown onset |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C - limits continuous thermal load on PCB layout |
| Non-repetitive Peak Power | 40 W for tp = 100 μs - supports transient surge suppression without failure |
| Junction Temperature | −65 °C to +150 °C - enables operation in engine control unit and body electronics |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic case with 2 leads, 2.3 mm × 1.35 mm footprint, 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 |
| 2 | Anode (A) | Connected to ground or lower potential; reverse bias applied between K and A |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Low thermal resistance | Rth(j-sp) = 110 K/W - enables efficient heat transfer from junction to solder point |
| Stable temperature coefficient | −2.7 to +1.2 mV/K - minimizes voltage drift across operating temperature range |
| Small outline package | SOD323 footprint - saves board space in compact ECUs and ADAS modules |
| High surge capability | IZSM = 6.0 A for 100 μs - withstands load dump and ISO 7637-2 pulse 1/2a transients |
Applications
| Automotive Sensor Interface | Industrial Power Monitor |
|---|---|
|
Use Scenario: Stabilizing 5 V supply for analog sensor signal conditioning in engine coolant temperature (ECT) module. IC Role / Device Role / Timing Role: Zener reference providing fixed bias voltage for op-amp input stage and ADC reference divider. Use Value: Maintains <±2 % output accuracy over −40 °C to +125 °C ambient, enabling <0.5 °C temperature resolution. |
Use Scenario: Clamping overvoltage on 24 V industrial PLC I/O line during inductive switching events. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing 40 W surges without degradation. Use Value: Limits voltage to ≤5.4 V within 100 ns, protecting downstream RS-485 transceivers from damage. |
| USB-C Port Protection | Medical Battery Management |
|
Use Scenario: Reverse-polarity protection and voltage limiting on USB-C VBUS detection circuit. IC Role / Device Role / Timing Role: Bidirectional clamp preventing >5.4 V on microcontroller GPIO during hot-plug events. Use Value: 2 μA leakage at 3.8 V ensures <10 nA standby current, extending battery life in portable diagnostics. |
Use Scenario: Reference voltage source for lithium-ion cell voltage monitoring in infusion pump battery pack. IC Role / Device Role / Timing Role: Precision shunt regulator setting 5.1 V threshold for overvoltage cutoff logic. Use Value: ±5 % tolerance and −2.7 mV/K TC enable accurate 4.2 V/cell detection across −20 °C to +60 °C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B5V1-Q | ±2 % tolerance (4.99–5.21 V), 400 Ω max rdif, lower leakage (1 μA @ 3.8 V) | Better regulation accuracy and lower noise for precision references; higher cost | Select when tighter voltage stability and lower dynamic impedance are required for feedback loops |
| MMSZ5231B-TP | ±5 % tolerance (4.8–5.4 V), 600 Ω max rdif, 350 mW Ptot, no AEC-Q101 qualification | General-purpose use only; unsuitable for automotive due to lack of stress-test validation | Acceptable for consumer-grade power rails where automotive reliability is not mandated |
Compared with BZX384-B5V1-Q, this part trades regulation accuracy and impedance for lower cost and broader availability; compared with MMSZ5231B-TP, it adds AEC-Q101 compliance and superior thermal performance but requires automotive-grade sourcing controls.
Availability
BZX384-C5V1-Q is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor signal conditioning, USB-C interface protection, and medical battery monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX384-C5V1-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 technologies.
The BZX384-Q series belongs to Nexperia's automotive Zener diode product line, engineered specifically for robust voltage regulation in harsh-environment electronic control units, meeting AEC-Q101 requirements out-of-the-box.
FAQ
What is the maximum continuous reverse voltage this diode can regulate?
The BZX384-C5V1-Q is specified for nominal 5.1 V regulation at 5 mA, with a guaranteed breakdown range of 4.80 V to 5.40 V. It maintains regulation up to its 300 mW power limit-approximately 59 mA at 5.1 V-provided junction temperature stays below 150 °C and PCB thermal design meets FR4 single-sided copper guidelines.
How does the temperature coefficient affect voltage stability in automotive applications?
With a temperature coefficient ranging from −2.7 mV/K to +1.2 mV/K, the BZX384-C5V1-Q exhibits minimal voltage drift across −40 °C to +125 °C. At 100 °C temperature rise, worst-case shift is ±0.12 V-well within ±5 % tolerance-making it suitable for engine bay sensors and transmission control modules where ambient swings exceed 100 K.
Can this Zener diode be used for ESD protection in addition to voltage regulation?
No-it is not designed or characterized for ESD clamping. While it handles 40 W non-repetitive surges, its response time (>100 ns) and lack of defined CDM/HBM ratings make it unsuitable for IEC 61000-4-2 ESD protection. Dedicated TVS diodes like PESD5V0S1BA should be used for that function; BZX384-C5V1-Q serves only as a precision shunt regulator or coarse overvoltage clamp.
What is the significance of the 'Q' suffix in the part number?
The 'Q' suffix denotes Nexperia's automotive-grade qualification per AEC-Q101, covering stress tests including high-temperature reverse bias (HTRB), temperature cycling, and mechanical shock. It confirms the device has passed lot-level reliability screening for use in safety-critical automotive subsystems, distinguishing it from commercial-grade variants like BZX384-C5V1.
BZX384-C5V1-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):
- 5.1 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 2 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-C5V1-QX FAQ
1.How can I place an order for BZX384-C5V1-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C5V1-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-C5V1-QX reliable?
The price and inventory of BZX384-C5V1-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-C5V1-QX is usually 5 days.
3.What payment methods are accepted for BZX384-C5V1-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C5V1-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C5V1-QX?
BZX384-C5V1-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C5V1-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-C5V1-QX?
For technical support, including BZX384-C5V1-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C5V1-QX requirements.
6.How does Aetrix verify that BZX384-C5V1-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-C5V1-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-C5V1-QX meets industry standards.
7.What is the process for return or replacement of BZX384-C5V1-QX?
All BZX384-C5V1-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C5V1-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-C5V1-QX part is unused and in its original packaging.
Return procedure for BZX384-C5V1-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-C5V1-QX Tags
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MM5Z5V1ST1G
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