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Nexperia USA Inc. BZX384-A3V6X
- Part No.:
- BZX384-A3V6X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-A3V6X.pdf
- Description:
- DIODE ZENER 3.6V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:4,207
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Product details
Overview
BZX384-A3V6X from Nexperia is a ±1 % 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 40 W non-repetitive peak reverse power. It serves as a precision reference or overvoltage clamp in low-power analog signal conditioning and power rail stabilization circuits.
For engineers reviewing the BZX384-A3V6X datasheet, BZX384-A3V6X pinout, BZX384-A3V6X application, or BZX384-A3V6X equivalent, key selection criteria include its tight ±1 % VZ tolerance, low 90 Ω differential resistance at 5 mA, 5 μA reverse current at 1 V, -3.5 mV/K temperature coefficient, and compatibility with standard reflow soldering on FR4 PCBs.
Technical Context
This device operates as a two-terminal silicon Zener diode optimized for stable voltage reference and transient suppression in space-constrained designs. Its E24-compliant 3.6 V nominal breakdown voltage is specified at IZ = 5 mA with guaranteed min/max limits of 3.56 V and 3.64 V.
The diode exhibits a typical differential resistance of 90 Ω at 5 mA, reverse current ≤5 μA at VR = 1 V, and thermal resistance of 415 K/W junction-to-ambient (free air). Its cathode-anode polarity is marked by a bar on the SOD323 body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 3.56 V to 3.64 V at IZ = 5 mA - ensures precise 3.6 V regulation within ±1 % tolerance for reference stability |
| Differential Resistance (rdif) | 90 Ω max at IZ = 5 mA - maintains low output impedance for minimal voltage shift under load variation |
| Reverse Current (IR) | ≤5 μA at VR = 1 V - guarantees low leakage in standby or sensing circuits |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C on FR4 PCB - defines continuous DC power handling limit in standard mounting |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W for tp = 100 μs - supports transient surge clamping without failure |
| Temperature Coefficient (SZ) | -3.5 mV/K at IZ = 5 mA - quantifies VZ drift with junction temperature for thermal design margining |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - sets forward conduction loss in series protection configurations |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package: 2-pin, 1.35 mm × 0.85 mm body, 0.45 mm pitch, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Negative terminal; connected to regulated output node or ground return in shunt configuration |
| 2 | Anode (A) | Positive terminal; tied to unregulated input or current-limiting resistor in standard Zener bias |
Key Features
| Feature | Design Value |
|---|---|
| ±1 % VZ tolerance (A-series) | Enables high-accuracy voltage references without trimming in 3.6 V systems |
| Low 90 Ω differential resistance | Minimizes regulation error across 1–10 mA operating range for stable feedback nodes |
| 40 W non-repetitive surge rating | Clamps ESD or inductive spikes up to 100 μs without degradation in I/O protection |
| SOD323 footprint compatibility | Supports automated placement and reflow on 0.45 mm pitch, reducing board area vs. DO-35 |
| -3.5 mV/K temperature coefficient | Provides predictable, linear VZ drift for compensated reference designs up to 150 °C |
Applications
| Power Supply Rail Clamp | ADC Reference Stabilization |
|---|---|
Use Scenario: Clamping 3.3 V logic supply against overshoot during hot-swap or load dump events. IC Role / Device Role / Timing Role: Shunt-connected Zener providing low-impedance path to ground above 3.6 V threshold. Use Value: Limits transient excursions to <3.7 V using only 300 mW dissipation, avoiding LDO dropout or regulator latch-up. |
Use Scenario: Providing stable 3.6 V reference for 12-bit SAR ADC in battery-powered sensor node. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source replacing larger TL431-based circuits. Use Value: Delivers ±0.5 LSB accuracy over 0–70 °C due to tight tolerance and -3.5 mV/K TC, reducing calibration overhead. |
| Signal Level Translation | Overvoltage Protection Circuit |
Use Scenario: Biasing op-amp input stage to 3.6 V for single-supply rail-to-rail operation. IC Role / Device Role / Timing Role: DC bias generator establishing common-mode voltage in analog front-end. Use Value: Maintains <±2 mV offset drift over temperature, enabling sub-mV signal integrity in precision amplification. |
Use Scenario: Protecting microcontroller GPIO pins from 12 V automotive transients coupled via shared harness. IC Role / Device Role / Timing Role: First-stage clamp absorbing >90 % of 40 W surge energy before TVS activation. Use Value: Extends system-level ESD immunity to IEC 61000-4-2 Level 4 (8 kV contact) with no derating required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5226BS-7-F | 3.6 V ±5 % tolerance, 200 mW Ptot, 100 Ω rdif, SOD-123 package | Looser tolerance and lower power rating reduce accuracy in precision references | Select when cost sensitivity outweighs regulation stability requirements |
| Vishay BZX384-C3V6 | 3.6 V ±5 % tolerance, identical 300 mW Ptot, same SOD323 package | Higher IR (≤30 μA at 1 V) and wider VZ spread increase reference uncertainty | Choose only for non-critical biasing where ±5 % is acceptable and leakage is not constrained |
Compared with MMBZ5226BS-7-F and BZX384-C3V6, the BZX384-A3V6X delivers superior regulation accuracy (±1 % vs. ±5 %), lower dynamic impedance (90 Ω vs. ≥100 Ω), and tighter thermal drift control-making it optimal for metrology-grade references and safety-critical clamping where parameter consistency is mandatory.
Availability
BZX384-A3V6X is available at Aetrix Electronics and suitable for power supply rail clamp, ADC reference stabilization, signal level translation, and overvoltage protection requiring stable component supply across industrial control, medical instrumentation, and IoT edge node production.
Supply support for BZX384-A3V6X 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 advanced packaging and automotive-qualified components.
The BZX384 series belongs to Nexperia's precision Zener diode product line, engineered specifically for compact, low-power voltage reference and transient suppression in consumer, industrial, and communication equipment where SMD footprint and parametric consistency are critical.
FAQ
What is the maximum continuous forward current for BZX384-A3V6X?
The absolute maximum forward current is 250 mA per limiting values table. However, sustained operation above 100 mA is not recommended due to thermal constraints: at 100 mA, forward voltage reaches ~1.1 V, generating 110 mW dissipation that exceeds safe junction temperature margins on standard FR4 PCBs without heatsinking.
Can BZX384-A3V6X be used in place of a 3.3 V Zener diode?
No-it is not a drop-in replacement for 3.3 V Zeners. Its nominal breakdown voltage is 3.6 V with guaranteed range 3.56 V to 3.64 V. Using it in a 3.3 V circuit would result in excessive clamping voltage, potentially damaging downstream 3.3 V logic. For 3.3 V regulation, BZX384-A3V3 (3.3 V ±1 %) is the correct variant.
How does the -3.5 mV/K temperature coefficient affect long-term stability?
At 70 °C ambient (ΔT = 45 K above 25 °C reference), VZ shifts by approximately -0.158 V, resulting in a final value near 3.44 V. This predictable linear drift enables first-order compensation in reference circuits but requires thermal layout awareness to avoid localized heating that exacerbates coefficient impact.
Is BZX384-A3V6X suitable for automotive applications?
No-this part is explicitly non-automotive qualified per Revision History section. Nexperia states "Products changed to non-automotive qualification" in Rev. 4, and recommends consulting their website for automotive (-Q) alternatives. Use only in commercial/industrial environments where AEC-Q200 stress testing is not required.
BZX384-A3V6X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX384
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.6 V
- Tolerance:
- ±1%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 95 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX384-A3V6X FAQ
1.How can I place an order for BZX384-A3V6X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-A3V6X 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-A3V6X reliable?
The price and inventory of BZX384-A3V6X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-A3V6X is usually 5 days.
3.What payment methods are accepted for BZX384-A3V6X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-A3V6X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-A3V6X?
BZX384-A3V6X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-A3V6X 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-A3V6X?
For technical support, including BZX384-A3V6X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-A3V6X requirements.
6.How does Aetrix verify that BZX384-A3V6X is sourced from the original manufacturer or authorized distributors?
All BZX384-A3V6X 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-A3V6X meets industry standards.
7.What is the process for return or replacement of BZX384-A3V6X?
All BZX384-A3V6X units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-A3V6X, 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-A3V6X part is unused and in its original packaging.
Return procedure for BZX384-A3V6X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-A3V6X Tags
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MM5Z5V1ST1G
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