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Nexperia USA Inc. BZX384-C36-QX
- Part No.:
- BZX384-C36-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C36-QX.pdf
- Description:
- DIODE ZENER 36V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:9,348
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Product details
Overview
BZX384-C36-QX from Nexperia is a ±5 % 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 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-C36-QX datasheet, BZX384-C36-QX pinout, BZX384-C36-QX application, or BZX384-C36-QX equivalent, key selection criteria include its 36 V Zener voltage tolerance (±5 %), non-repetitive peak reverse power capability of 40 W, thermal resistance of 415 K/W (junction-to-ambient), and automotive-grade qualification per AEC-Q101.
Technical Context
This device operates as a two-terminal silicon Zener diode with sharp reverse-breakdown characteristics, designed for precision voltage regulation in low-current applications. Its differential resistance is 350 Ω max at IZ = 2 mA, and temperature coefficient is +0.05 mV/K - indicating minimal drift across operating temperature.
The diode exhibits reverse current ≤0.9 μA at VR = 28.8 V (80 % of VZ) and ≤130 μA at VR = 34.2 V (95 % of VZ), enabling reliable clamping in transient suppression. Its 1.1 V forward voltage at 100 mA supports low-loss forward conduction during fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 34.0 V to 38.0 V at IZ = 2 mA - defines usable regulation range under nominal test current |
| Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 μs - enables surge energy absorption in ESD or load-dump events |
| Differential Resistance (rdif) | 350 Ω max at IZ = 2 mA - determines output impedance and regulation stiffness under varying load |
| Reverse Current (IR) | ≤130 μA at VR = 34.2 V - ensures low leakage near breakdown, critical for battery-powered bias networks |
| Junction Temperature (Tj) | −65 °C to +150 °C - supports operation in under-hood automotive environments and industrial enclosures |
Pinout & Package
The BZX384-C36-QX is housed in a surface-mount SOD323 (SC-76) plastic package with cathode-marked lead identification. The marking bar denotes the cathode terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased during Zener operation; carries full surge current during clamping |
| 2 | Anode (A) | Connected to reference or ground potential; establishes polarity for proper reverse-bias configuration |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics including engine control units and body modules requiring reliability under thermal cycling and vibration |
| ±5 % Zener tolerance | Enables cost-effective voltage referencing where tight regulation is not required, such as LED current setting or comparator thresholds |
| 415 K/W junction-to-ambient thermal resistance | Allows direct thermal modeling on standard FR4 PCBs without heatsinking for <100 mW average dissipation |
| Low 130 μA reverse leakage at 95 % VZ | Minimizes standby current in always-on systems like CAN bus termination or microcontroller reset circuits |
| 1.1 V forward voltage at 100 mA | Supports bidirectional clamping configurations and limits forward conduction losses during overvoltage transients |
Applications
| Automotive Sensor Biasing | Industrial Power Supply Reference |
|---|---|
|
Use Scenario: Providing stable 36 V reference for analog front-end circuitry in exhaust gas temperature sensors. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference for op-amp input biasing and ADC reference scaling. Use Value: Maintains sensor signal integrity across −40 °C to +125 °C ambient with <±0.5 % drift due to its low temperature coefficient and AEC-Q101 qualification. |
Use Scenario: Regulating auxiliary 36 V rail in programmable logic controller (PLC) I/O module power stage. IC Role / Device Role / Timing Role: Shunt regulator stabilizing local supply for isolated gate drivers and level-shifters. Use Value: Delivers consistent regulation despite input ripple up to 5 Vpp, leveraging 350 Ω differential resistance to limit output variation to <120 mV. |
| Consumer Device Overvoltage Clamp | Medical Equipment Voltage Limiter |
|
Use Scenario: Protecting USB-C PD negotiation ICs from 36 V surge events on VBUS lines in docking stations. IC Role / Device Role / Timing Role: Transient voltage suppressor clamping fast-rising spikes before they reach sensitive interface ICs. Use Value: Absorbs 40 W peak power for 100 μs without degradation, preventing latch-up in downstream controllers per IEC 61000-4-5 Level 3. |
Use Scenario: Limiting high-voltage bias rails in portable ultrasound probe front-end amplifiers. IC Role / Device Role / Timing Role: Precision clamp ensuring amplifier supply stays within absolute maximum ratings during probe cable disconnect transients. Use Value: Guarantees <130 μA leakage at 34.2 V, avoiding signal offset errors in low-noise analog chains while meeting IEC 60601-1 creepage requirements via SOD323 footprint. |
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-Q | ±2 % tolerance (35.3 V–36.7 V) vs. ±5 % (34.0 V–38.0 V); lower rdif (150 Ω max) | Better regulation stability in precision feedback loops; higher cost | Select when tighter voltage control is required and budget allows premium tolerance |
| MMSZ5245B-TP | ±5 % tolerance (34.2 V–37.8 V); same SOD-123 package; Ptot = 500 mW | Higher power rating enables longer surge handling but larger thermal footprint | Choose for higher average power dissipation needs where board space permits SOD-123 |
Compared with BZX384-B36-Q, the BZX384-C36-QX trades regulation accuracy for cost and fits tighter layouts; versus MMSZ5245B-TP, it offers smaller SOD323 size and automotive qualification but lower continuous power handling.
Availability
BZX384-C36-QX is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC power supplies, consumer USB-C protection circuits, and medical ultrasound biasing requiring stable component supply with AEC-Q101 assurance.
Supply support for BZX384-C36-QX 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.
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 safety-critical subsystems.
FAQ
What is the maximum reverse voltage the BZX384-C36-QX can withstand before breakdown?
The BZX384-C36-QX has a nominal Zener voltage of 36 V with a guaranteed range of 34.0 V to 38.0 V at IZ = 2 mA. Its reverse breakdown is sharp and well-defined within this band; operation above 38.0 V risks exceeding absolute maximum ratings and may cause irreversible damage.
Is the BZX384-C36-QX suitable for use in reflow soldering processes?
Yes - the device is qualified for lead-free reflow soldering per J-STD-020. Its SOD323 package supports peak temperatures up to 260 °C for ≤30 seconds. Recommended footprint dimensions are provided in Figure 12 of the datasheet, with 0.5 mm pad width and 0.6 mm solder mask opening per terminal.
How does the temperature coefficient affect regulation accuracy over automotive temperature ranges?
The BZX384-C36-QX has a temperature coefficient of +0.05 mV/K, meaning its Zener voltage increases by ~0.05 mV per Kelvin rise. Over −40 °C to +125 °C (165 K span), this results in ~8.25 mV total shift - less than 0.023 % of 36 V - making it highly stable for automotive applications without external compensation.
Can the BZX384-C36-QX replace older BZX384-C36 variants without design changes?
Yes - the "-QX" suffix denotes Nexperia's qualified automotive version with identical electrical specs, pinout, and package as legacy BZX384-C36 parts. It adds AEC-Q101 qualification and enhanced traceability, requiring no layout or schematic modifications for drop-in replacement in existing designs.
BZX384-C36-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):
- 36 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 90 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX384-C36-QX FAQ
1.How can I place an order for BZX384-C36-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C36-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-C36-QX reliable?
The price and inventory of BZX384-C36-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-C36-QX is usually 5 days.
3.What payment methods are accepted for BZX384-C36-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C36-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C36-QX?
BZX384-C36-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C36-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-C36-QX?
For technical support, including BZX384-C36-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C36-QX requirements.
6.How does Aetrix verify that BZX384-C36-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-C36-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-C36-QX meets industry standards.
7.What is the process for return or replacement of BZX384-C36-QX?
All BZX384-C36-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C36-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-C36-QX part is unused and in its original packaging.
Return procedure for BZX384-C36-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-C36-QX Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
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SMAZ12-13-F
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