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Nexperia USA Inc. BZX384-C3V6-QX
- Part No.:
- BZX384-C3V6-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C3V6-QX.pdf
- Description:
- DIODE ZENER 3.6V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,469
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Product details
Overview
BZX384-C3V6-Q from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 3.6 V nominal breakdown voltage at 5 mA, 300 mW total power dissipation, and qualified to AEC-Q101 for automotive use. It provides stable reference voltage in low-power biasing, overvoltage protection, and voltage clamping circuits.
For engineers reviewing the BZX384-C3V6-Q datasheet, BZX384-C3V6-Q pinout, BZX384-C3V6-Q application, or BZX384-C3V6-Q equivalent, key selection criteria include its 3.4 V–3.8 V Zener voltage range at IZ = 5 mA, 90 μA reverse current at VR = 1 V, −3.5 to 0.0 mV/K temperature coefficient, 600 Ω differential resistance, and SOD323 thermal resistance of 415 K/W in free air.
Technical Context
This Zener diode operates in reverse-bias breakdown mode to maintain a stable reference voltage across its terminals under varying load and temperature conditions. Its design targets precision low-current regulation where tight voltage control is required despite ambient fluctuations.
The device features a non-repetitive peak reverse power dissipation of 40 W (100 μs pulse), junction-to-ambient thermal resistance of 415 K/W on FR4 PCB, and is characterized with differential resistance ≤600 Ω at IZ = 5 mA - critical for minimizing output impedance in shunt-regulated supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.4 V to 3.8 V at IZ = 5 mA - defines usable regulation window for 3.6 V nominal reference |
| 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 changes |
| Reverse Current (IR) | ≤90 μA at VR = 1 V - indicates leakage level before breakdown, critical for low-power standby circuits |
| Temperature Coefficient (SZ) | −3.5 to 0.0 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius in regulation region |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - relevant for polarity-check or dual-function circuit integration |
| Junction Temperature (Tj) | 150 °C maximum - defines upper thermal limit for reliable long-term operation |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic package with 2 leads, 2.7 mm × 1.6 mm footprint, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node in shunt configuration; marking bar identifies this terminal |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-bias polarity must be observed for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and surge stress |
| ±5 % Zener tolerance (C-series) | Enables cost-optimized designs where tighter tolerances are unnecessary, e.g., non-critical biasing |
| 40 W non-repetitive peak power | Supports transient overvoltage suppression in ESD-prone interfaces without permanent damage |
| SOD323 footprint compatibility | Enables high-density PCB layouts and automated reflow assembly with industry-standard land pattern |
| 150 °C max junction temperature | Allows operation in under-hood or enclosed industrial environments without derating below 125 °C ambient |
Applications
| Automotive Sensor Biasing | Industrial Power Supply Reference |
|---|---|
Use Scenario: Providing stable 3.6 V reference for analog front-end of engine coolant temperature sensor. IC Role / Device Role / Timing Role: Shunt voltage reference maintaining excitation voltage accuracy despite battery voltage fluctuations (9–16 V). Use Value: Ensures <±1.5 % sensor output linearity over −40 °C to +125 °C ambient due to AEC-Q101 thermal stability and low rdif. |
Use Scenario: Regulating feedback node in isolated flyback converter auxiliary winding supply. IC Role / Device Role / Timing Role: Zener clamp setting optocoupler LED current threshold to stabilize primary-side regulation loop. Use Value: Maintains consistent regulation margin across input line variations using 3.6 V ±5 % tolerance and 600 Ω rdif to minimize loop gain shift. |
| Consumer Device Overvoltage Protection | Medical Instrument Signal Conditioning |
Use Scenario: Clamping USB VBUS line during hot-plug transients in portable diagnostic equipment. IC Role / Device Role / Timing Role: Transient voltage suppressor limiting peak voltage to 3.8 V to protect downstream LDO input stage. Use Value: Absorbs 40 W surges (100 μs) without failure while holding clamp voltage within safe margin of 4.0 V absolute max rating. |
Use Scenario: Establishing precision bias point for instrumentation amplifier input stage in patient-worn ECG monitor. IC Role / Device Role / Timing Role: Low-leakage (≤90 μA @ 1 V) Zener reference stabilizing common-mode voltage in high-impedance biopotential circuit. Use Value: Minimizes input offset drift contribution via −3.5 to 0.0 mV/K SZ, supporting <1 μV/°C system-level thermal error budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B3V6-Q | ±2 % tolerance (3.53–3.67 V), lower rdif (≤400 Ω), same package and AEC-Q101 rating | Better regulation accuracy for precision analog circuits; higher cost than C-series | Select when tighter voltage control outweighs cost sensitivity in automotive signal chains |
| MMSZ4685T1G | 3.6 V ±5 %, SOD-123 package, 500 mW Ptot, not AEC-Q101 qualified | Higher power handling but lacks automotive qualification and has larger footprint | Use only in non-automotive industrial or consumer applications requiring >300 mW dissipation |
Compared with BZX384-C3V6-Q, the BZX384-B3V6-Q offers improved voltage accuracy and lower dynamic impedance for demanding analog references, while MMSZ4685T1G trades automotive qualification and compactness for higher power capacity in non-automotive contexts.
Availability
BZX384-C3V6-Q is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial power supply reference, consumer overvoltage protection, and medical signal conditioning requiring stable component supply with AEC-Q101 assurance.
Supply support for BZX384-C3V6-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 energy-efficient solutions.
The BZX384-Q series belongs to Nexperia's automotive-grade Zener diode product line, engineered specifically for robust voltage reference and clamping in harsh-environment electronic control units and sensor modules.
FAQ
What is the maximum continuous reverse current this diode can handle?
The BZX384-C3V6-Q is rated for a maximum forward current of 250 mA, but its continuous reverse (Zener) current is limited by power dissipation: at 25 °C ambient, IZ ≤ 83 mA ensures Ptot ≤ 300 mW. Derating is required above 25 °C per the 415 K/W thermal resistance.
Is this diode suitable for use in a 125 °C ambient environment?
Yes - the device supports operation up to +150 °C junction temperature. At 125 °C ambient, maximum allowable power dissipation drops to ~120 mW (using Rth(j-a) = 415 K/W), permitting ~33 mA Zener current. This remains sufficient for most biasing and reference applications.
How does the ±5 % tolerance affect regulation accuracy in practice?
The ±5 % tolerance means VZ spans 3.4 V to 3.8 V at 5 mA. In a typical 10 kΩ series resistor / 3.3 V rail application, output voltage varies from 3.42 V to 3.78 V - acceptable for non-critical biasing but insufficient for ADC reference or precision op-amp circuits requiring <±1 % stability.
Can this diode replace a 3.3 V Zener in an existing design?
No - BZX384-C3V6-Q is specified for 3.6 V nominal breakdown. Substituting it for a 3.3 V Zener would raise regulated voltage by ~9 %, potentially exceeding downstream IC absolute maximum ratings. Use BZX384-C3V3-Q (3.3 V ±5 %) instead for direct replacement.
BZX384-C3V6-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):
- 3.6 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 5 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-C3V6-QX FAQ
1.How can I place an order for BZX384-C3V6-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C3V6-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-C3V6-QX reliable?
The price and inventory of BZX384-C3V6-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-C3V6-QX is usually 5 days.
3.What payment methods are accepted for BZX384-C3V6-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C3V6-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C3V6-QX?
BZX384-C3V6-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C3V6-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-C3V6-QX?
For technical support, including BZX384-C3V6-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C3V6-QX requirements.
6.How does Aetrix verify that BZX384-C3V6-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-C3V6-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-C3V6-QX meets industry standards.
7.What is the process for return or replacement of BZX384-C3V6-QX?
All BZX384-C3V6-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C3V6-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-C3V6-QX part is unused and in its original packaging.
Return procedure for BZX384-C3V6-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-C3V6-QX Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
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
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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