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Nexperia USA Inc. BZX384-B3V6-QX
- Part No.:
- BZX384-B3V6-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-B3V6-QX.pdf
- Description:
- DIODE ZENER 3.6V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,850
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Product details
Overview
BZX384-B3V6-Q from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 3.6 V nominal breakdown at 5 mA, with 300 mW total power dissipation and AEC-Q101 qualification for automotive use. It provides stable reference voltage in low-power biasing, overvoltage protection, and voltage clamping circuits.
For engineers reviewing the BZX384-B3V6-Q datasheet, BZX384-B3V6-Q pinout, BZX384-B3V6-Q application, or BZX384-B3V6-Q equivalent, key selection criteria include its 3.53–3.67 V Zener voltage range at 5 mA, 90 µA max reverse current at 2.88 V, −3.5 to 0.0 mV/K temperature coefficient, 600 Ω max differential resistance, and SOD323 thermal resistance of 415 K/W in free air.
Technical Context
This Zener diode operates in reverse-biased avalanche mode to maintain a stable voltage across its terminals under varying load and temperature conditions. Its design supports precision regulation in space-constrained PCB layouts due to the SOD323 footprint and low thermal resistance to solder point (110 K/W).
The device features a non-repetitive peak reverse power dissipation of 40 W (100 µs pulse), junction temperature rating up to 150 °C, and qualified AEC-Q101 reliability for under-hood automotive environments. Its 3.6 V nominal Zener voltage places it in the low-voltage reference segment ideal for 3.3 V rail supervision and logic-level clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.53 V to 3.67 V at IZ = 5 mA - defines tight regulation window for 3.3 V system references |
| Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Differential Resistance (rdif) | ≤600 Ω - limits output impedance drift under small-signal AC variations |
| Reverse Current (IR) | ≤90 µA at VR = 2.88 V - ensures low leakage before knee conduction begins |
| Temperature Coefficient (SZ) | −3.5 to 0.0 mV/K - indicates near-zero or slightly negative drift over 25–150 °C junction range |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - confirms low-loss forward conduction for bidirectional clamp configurations |
| Junction-to-Ambient Rth | 415 K/W - determines thermal rise per watt in unforced-air SMD layout |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic package with 2 leads, 1.35 mm × 0.85 mm body, 0.45 mm lead pitch, and cathode marked by bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker (bar) aligns with this terminal |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| ±2 % Zener tolerance (B-series) | Enables tighter voltage margin control than ±5 % C-series in feedback networks |
| Non-repetitive 40 W surge rating | Supports transient overvoltage suppression (e.g., ISO 7637-2 pulse 1/2a) without failure |
| SOD323 footprint compatibility | Matches industry-standard 0805-equivalent land pattern for automated assembly and reflow |
| 150 °C max junction temperature | Permits operation in high-ambient under-hood or industrial control enclosures |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Regulating reference voltage for microcontroller ADC inputs monitoring door lock status or ambient light sensors. IC Role / Device Role / Timing Role: Zener shunt regulator providing stable 3.6 V reference independent of supply ripple. Use Value: Maintains <±10 mV reference stability over −40 to +125 °C ambient, enabling sub-LSB ADC accuracy. |
Use Scenario: Clamping analog sensor outputs (e.g., 4–20 mA loop receivers) to prevent overvoltage damage to op-amps. IC Role / Device Role / Timing Role: Low-leakage reverse-biased voltage clamp limiting signal swing to 3.6 V. Use Value: Limits fault energy with 90 µA max IR at 2.88 V, preventing op-amp input stage saturation or latch-up. |
| Consumer USB-C Power Negotiation | Medical Wearable Battery Monitoring |
|
Use Scenario: Providing precise bias for CC line voltage detection circuitry in USB-C port controllers. IC Role / Device Role / Timing Role: Zener reference setting threshold for PD communication voltage level recognition. Use Value: Tight 3.53–3.67 V tolerance ensures reliable CC line state discrimination across temperature and unit variance. |
Use Scenario: Generating stable reference for lithium-ion cell voltage measurement in compact wearable health monitors. IC Role / Device Role / Timing Role: Low-power shunt reference supplying excitation to 12-bit SAR ADC reference input. Use Value: 300 mW Ptot and 415 K/W Rth(j-a) allow continuous operation within 0.5 °C self-heating limit at 100 µA bias. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B3V3-Q | 3.23–3.37 V Zener range at 5 mA; 5 Ω lower rdif (max 595 Ω) | Better suited for 3.3 V rail clamping where tighter headroom below 3.3 V is required | Select when reference must stay strictly below 3.3 V logic high threshold |
| BZX384-B3V9-Q | 3.82–3.98 V Zener range at 5 mA; 3 µA lower IR at VR = 3.1 V | Preferred for higher-threshold supervisor circuits requiring margin above 3.6 V | Choose when system reset threshold is set at ~3.8 V and leakage sensitivity is critical |
Compared with BZX384-B3V6-Q, the BZX384-B3V3-Q offers lower nominal voltage for tighter 3.3 V rail alignment, while BZX384-B3V9-Q provides higher threshold and lower leakage-enabling differentiated reset or clamp thresholds in multi-rail systems without changing layout.
Availability
BZX384-B3V6-Q is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and portable medical devices requiring stable component supply with AEC-Q101 compliance and long-term production continuity.
Supply support for BZX384-B3V6-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 specializing in high-performance, high-reliability discrete and logic devices, with leadership in automotive-qualified components and efficient manufacturing.
The BZX384-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for precision voltage reference and transient protection in harsh-environment automotive and industrial applications.
FAQ
What is the maximum steady-state power dissipation for BZX384-B3V6-Q at 85 °C ambient?
At 85 °C ambient, derated power dissipation is approximately 210 mW, calculated using the 415 K/W junction-to-ambient thermal resistance and 150 °C max junction temperature: (150 − 85) °C ÷ 415 K/W = 0.157 W. This ensures safe continuous operation without exceeding Tj limit.
Can BZX384-B3V6-Q be used in series for higher-voltage regulation?
No - BZX384-B3V6-Q is not characterized or guaranteed for series connection. Zener matching tolerances, temperature coefficients, and dynamic impedance variations cause uneven voltage sharing and potential thermal runaway. Use single-device solutions or purpose-designed series Zener arrays instead.
Is the cathode marking visible under standard optical inspection?
Yes - the cathode is indicated by a distinct white or black bar aligned with Pin 1 on the top surface of the SOD323 package, fully compliant with JEDEC standards and detectable via AOI systems calibrated for 0805-class features.
Does BZX384-B3V6-Q meet RoHS and REACH requirements?
Yes - BZX384-B3V6-Q is manufactured in full compliance with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with all homogeneous materials verified to contain ≤1000 ppm brominated flame retardants and zero SVHC substances above threshold.
BZX384-B3V6-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:
- ±2%
- 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-B3V6-QX FAQ
1.How can I place an order for BZX384-B3V6-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-B3V6-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-B3V6-QX reliable?
The price and inventory of BZX384-B3V6-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-B3V6-QX is usually 5 days.
3.What payment methods are accepted for BZX384-B3V6-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-B3V6-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-B3V6-QX?
BZX384-B3V6-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-B3V6-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-B3V6-QX?
For technical support, including BZX384-B3V6-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-B3V6-QX requirements.
6.How does Aetrix verify that BZX384-B3V6-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-B3V6-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-B3V6-QX meets industry standards.
7.What is the process for return or replacement of BZX384-B3V6-QX?
All BZX384-B3V6-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-B3V6-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-B3V6-QX part is unused and in its original packaging.
Return procedure for BZX384-B3V6-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-B3V6-QX Tags
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