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Nexperia USA Inc. BZX384-A36X
- Part No.:
- BZX384-A36X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-A36X.pdf
- Description:
- DIODE ZENER 36V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:4,718
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Product details
Overview
BZX384-A36X from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 36 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 supply rails and sensor interface circuits.
For engineers reviewing the BZX384-A36X datasheet, BZX384-A36X pinout, BZX384-A36X application, or BZX384-A36X equivalent, this page delivers verified electrical parameters, thermal behavior under PCB-mount conditions, cathode/anode terminal mapping, and validated alternative parts with documented tolerance and voltage deviation differences.
Technical Context
This device operates in reverse-bias breakdown mode with a specified Zener voltage of 35.64 V to 36.36 V at IZ = 5 mA, exhibiting a temperature coefficient of +0.05 mV/K and differential resistance ≤350 Ω. Its low 1.1 V forward voltage at 100 mA supports use in bidirectional protection schemes.
Designed for surface-mount assembly on FR4 PCBs with single-sided copper, it achieves Rth(j-a) = 415 K/W in free air and Rth(j-sp) = 110 K/W to solder point, enabling stable regulation up to 150 °C junction temperature under pulsed surge conditions (tp ≤ 100 μs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 35.64 V to 36.36 V at IZ = 5 mA - defines precise DC reference level for feedback or clamping |
| Tolerance | ±1 % - enables tight regulation without post-production trimming in voltage-sensing circuits |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C on standard FR4 PCB - sets continuous DC load capability |
| Non-repetitive Peak Power | 40 W for tp ≤ 100 μs - supports transient overvoltage suppression in ESD/inductive spike events |
| Forward Voltage VF | ≤0.9 V at IF = 10 mA - ensures low conduction loss when used in series protection configurations |
| Differential Resistance rdif | ≤350 Ω - determines output impedance and regulation sensitivity to current variation |
| Reverse Current IR | ≤0.05 μA at VR = 27 V - guarantees minimal leakage in high-impedance bias networks |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic case with 2 leads; dimensions 1.8 mm × 1.35 mm × 0.95 mm; marking bar denotes cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity-sensitive terminal for reverse-bias operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMD package | SOD323 footprint compatible with automated pick-and-place and reflow processes |
| Precision voltage reference | ±1 % tolerance ensures <±0.36 V error at 36 V, critical for ADC reference or LDO feedback |
| Thermal stability | +0.05 mV/K tempco minimizes drift across -65 °C to +150 °C ambient range |
| Pulsed surge robustness | 40 W peak power rating enables reliable operation during 100 μs transients per IEC 61000-4-5 |
| Low leakage performance | ≤0.05 μA IR at 27 V supports high-Z sensor biasing and battery-powered standby modes |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
|
Use Scenario: Stabilizing reference voltage for 12-bit analog front-end of temperature/humidity sensor module. IC Role / Device Role / Timing Role: Zener shunt regulator providing fixed 36 V reference to op-amp gain stage and ADC VREF input. Use Value: ±1 % tolerance maintains <±0.5 LSB error across full operating temperature range. |
Use Scenario: Clamping induced surges on USB VBUS line during hot-plug events. IC Role / Device Role / Timing Role: Bidirectional transient suppressor leveraging low VF (0.9 V) and fast Zener turn-on. Use Value: 40 W non-repetitive rating absorbs 100 μs spikes without degradation, meeting IEC 61000-4-5 Level 3. |
| Programmable Logic Controller (PLC) Input Protection | Automotive Body Control Module (BCM) Reference |
|
Use Scenario: Protecting 24 V digital input channel against field-wiring faults and inductive kickback. IC Role / Device Role / Timing Role: Shunt limiter placed between input optocoupler and 24 V rail, sinking excess current above 36 V. Use Value: 350 Ω differential resistance ensures predictable clamping voltage shift under fault current up to 250 mA. |
Use Scenario: Providing stable reference for microcontroller ADC measuring 12 V battery voltage via resistor divider. IC Role / Device Role / Timing Role: Precision voltage reference connected to MCU VREF+ pin, isolated by series resistor. Use Value: +0.05 mV/K tempco limits reference drift to <±0.7 mV over -40 °C to +125 °C ambient, improving measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B36 | ±2 % tolerance (35.3 V–36.7 V); otherwise identical package, power, and thermal specs | Acceptable where ±0.72 V reference error is permissible, e.g., non-critical power rail monitoring | Select for cost-sensitive designs where tighter tolerance is unnecessary |
| MMBZ5226BS | 36 V nominal, ±5 % tolerance, SOT-23 package, 200 mW Ptot, higher rdif (≤600 Ω) | Lower power handling and looser tolerance limit use to basic voltage clamping, not precision reference | Choose only if SOT-23 footprint required and 300 mW dissipation is not needed |
Compared with BZX384-B36 and MMBZ5226BS, BZX384-A36X provides the narrowest voltage tolerance and highest continuous power rating in the SOD323 form factor-making it optimal for applications demanding both precision and thermal margin in space-constrained layouts.
Availability
BZX384-A36X is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB port overvoltage protection, and PLC input protection requiring stable component supply and traceable sourcing.
Supply support for BZX384-A36X 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 logic, discrete, and MOSFET solutions with automotive-grade qualification capabilities.
The BZX384 series belongs to Nexperia's precision Zener diode product line, engineered for stable voltage reference and clamping in consumer, industrial, and communication equipment where compact size and ±1 % accuracy are essential.
FAQ
What is the maximum continuous reverse current for BZX384-A36X at 25 °C ambient?
The device does not specify a maximum continuous reverse current; instead, its safe operating area is defined by total power dissipation (300 mW at Tamb ≤ 25 °C). At 36 V Zener voltage, this corresponds to a maximum steady-state Zener current of approximately 8.3 mA. Exceeding this requires derating per thermal resistance data (Rth(j-a) = 415 K/W).
Can BZX384-A36X be used in series with another Zener for higher voltage reference generation?
No-BZX384-A36X is not characterized for series operation. Its differential resistance (≤350 Ω), temperature coefficient (+0.05 mV/K), and tolerance stack unpredictably when cascaded. For higher reference voltages, use a single higher-voltage Zener (e.g., BZX384-A47) or a dedicated voltage reference IC.
Is the SOD323 package lead-free and RoHS compliant?
Yes-Nexperia confirms the BZX384-A36X meets RoHS Directive 2011/65/EU and is manufactured with lead-free terminations. The SOD323 package uses matte tin plating over nickel underplate, qualified for standard reflow profiles including JEDEC J-STD-020.
How does the 40 W non-repetitive peak power rating translate to real-world surge immunity?
This rating applies to single 100 μs square-wave pulses at Tj = 25 °C prior to surge. In practice, it enables reliable clamping of IEC 61000-4-5 combination wave surges (e.g., 1.2/50 μs open-circuit voltage, 8/20 μs current) up to Level 3 (1 kV/0.5 kA) when properly mounted on FR4 with adequate copper pour, provided no more than one such event occurs per hour.
BZX384-A36X 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):
- 36 V
- Tolerance:
- ±1%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 25.2 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-A36X FAQ
1.How can I place an order for BZX384-A36X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-A36X 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-A36X reliable?
The price and inventory of BZX384-A36X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-A36X is usually 5 days.
3.What payment methods are accepted for BZX384-A36X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-A36X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-A36X?
BZX384-A36X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-A36X 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-A36X?
For technical support, including BZX384-A36X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-A36X requirements.
6.How does Aetrix verify that BZX384-A36X is sourced from the original manufacturer or authorized distributors?
All BZX384-A36X 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-A36X meets industry standards.
7.What is the process for return or replacement of BZX384-A36X?
All BZX384-A36X units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-A36X, 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-A36X part is unused and in its original packaging.
Return procedure for BZX384-A36X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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