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Nexperia USA Inc. BZX84W-C36-QX
- Part No.:
- BZX84W-C36-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C36-QX.pdf
- Description:
- DIODE ZENER 36V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:9,043
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Product details
Overview
BZX84W-C36-QX from Nexperia is a ±5 % tolerance Zener diode in SOT323 (SC-70) package, rated for 36 V nominal regulation voltage, 275 mW total power dissipation at 25 °C, and qualified to AEC-Q101 for automotive use. It delivers stable voltage reference in low-power biasing, overvoltage clamping, and precision threshold detection circuits.
For engineers reviewing the BZX84W-C36-QX datasheet, BZX84W-C36-QX pinout, BZX84W-C36-QX application, or BZX84W-C36-QX equivalent, this page provides verified Zener voltage, differential resistance, temperature coefficient, reverse leakage, and thermal resistance data - all confirmed from Nexperia's official product data sheet Rev. 1 (2021).
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal Zener voltage of 36 V at IZ = 2 mA, exhibiting a typical differential resistance of 350 Ω and a positive temperature coefficient of +33.0 mV/K. Its low 0.8 pF capacitance at 1 MHz and 0 V bias supports high-frequency stabilization.
The device features a non-repetitive peak reverse power dissipation of 40 W for 100 µs pulses and is mounted on FR4 PCB with single-sided copper. Junction-to-ambient thermal resistance is 455 K/W under standard footprint conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 34.0 V to 38.0 V at IZ = 2 mA - defines regulation range for precision voltage reference |
| Differential Resistance (rdif) | 350 Ω max at IZ = 2 mA - determines output impedance and load regulation sensitivity |
| Temperature Coefficient (SZ) | +33.0 mV/K typical - quantifies drift per degree Celsius in temperature-sensitive circuits |
| Reverse Leakage (IR) | 50 nA max at VR = 25.2 V - ensures minimal quiescent current in standby or battery-powered designs |
| Total Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 PCB - sets maximum continuous DC power handling capability |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - relevant for polarity-check or dual-function forward-bias applications |
| Junction Temperature (Tj) | −55 °C to +150 °C - enables operation in extended automotive under-hood environments |
Pinout & Package
SOT323 (SC-70) leadless surface-mount plastic package with 3 terminals; compact 2.2 mm × 1.35 mm footprint and 0.65 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential side in reverse-bias Zener operation; forward current entry point |
| 2 | Not Connected (n.c.) | Internally unconnected terminal; must remain floating - no PCB trace or solder mask required |
| 3 | Cathode (K) | Connects to higher-potential side in reverse-bias mode; primary Zener current return path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| ±5 % Zener voltage tolerance | Enables cost-effective selection where tight regulation is not required, e.g., supply rail clamping |
| Low 0.8 pF junction capacitance | Minimizes signal distortion in RF detector or high-speed transient suppression applications |
| 275 mW power rating on FR4 | Supports sustained regulation in space-constrained consumer and industrial control PCBs |
| 150 °C maximum junction temperature | Permits deployment near heat sources such as power MOSFETs or DC-DC converters |
Applications
| Automotive ECU Voltage Clamp | Industrial Sensor Bias Reference |
|---|---|
Use Scenario: Clamping 12 V/24 V supply rails against load-dump transients in engine control units. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to shunt excess energy into ground. Use Value: Limits voltage spikes to ≤40 V using its 36 V nominal Zener and 40 W non-repetitive surge rating. |
Use Scenario: Providing stable bias voltage for analog front-end amplifiers in temperature or pressure sensors. IC Role / Device Role / Timing Role: Precision voltage reference source with low tempco and minimal leakage. Use Value: Delivers <50 nA reverse leakage and +33.0 mV/K tempco for predictable offset calibration across −40 °C to +125 °C. |
| USB Port Overvoltage Protection | Programmable Logic Threshold Detector |
Use Scenario: Protecting USB 5 V data lines from accidental 12 V misconnection in docking stations. IC Role / Device Role / Timing Role: Fast-acting shunt regulator triggered above safe logic threshold. Use Value: Responds within nanoseconds due to low 0.8 pF capacitance and clamps at 36 V before downstream IC damage. |
Use Scenario: Setting trip point for comparator-based brown-out detection in microcontroller reset circuits. IC Role / Device Role / Timing Role: Stable reference node defining hysteresis window edge. Use Value: Maintains ±5 % tolerance over temperature, enabling repeatable 36 V trigger without trimming resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-B36-Q | ±2 % tolerance (35.3–36.7 V), lower rdif (350 Ω → 300 Ω), same package and AEC-Q101 rating | Preferred where tighter regulation stability is required, e.g., precision ADC reference buffers | Select when voltage accuracy outweighs cost sensitivity; requires tighter BOM control |
| MMSZ5227ET1G | 36 V nominal, ±5 %, SOD-123 package, 500 mW Ptot, not AEC-Q101 qualified | Suitable for commercial-grade power supplies but not automotive under-hood use | Choose only for non-automotive, higher-power applications where thermal margin >275 mW is needed |
Compared with BZX84W-C36-QX, the BZX84W-B36-Q offers improved voltage accuracy at identical automotive qualification, while MMSZ5227ET1G trades qualification for higher power and larger footprint - making the original optimal for space-constrained, AEC-compliant 36 V clamping.
Availability
BZX84W-C36-QX is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor biasing, and USB port overvoltage clamping requiring stable component supply and AEC-Q101 compliance.
Supply support for BZX84W-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 essential efficiency-enhancing components, delivering high-performance, reliable, and scalable solutions for automotive, industrial, and consumer markets.
BZX84W-Q series belongs to Nexperia's automotive-qualified Zener diode portfolio, engineered specifically for robust voltage regulation and transient suppression in harsh-environment electronic control modules.
FAQ
What is the maximum reverse current at 25.2 V for BZX84W-C36-QX?
The maximum reverse leakage current (IR) is 50 nA at VR = 0.7 × VZnom = 25.2 V and Tj = 25 °C. This ultra-low leakage ensures minimal power loss in always-on monitoring circuits and extends battery life in portable automotive sensors.
Is BZX84W-C36-QX compatible with reflow soldering processes?
Yes - it is qualified for standard lead-free reflow profiles per J-STD-020. The SOT323 package uses tin-plated terminations and supports peak temperatures up to 260 °C. Recommended footprint dimensions are 0.55 mm × 0.6 mm pad size with 0.65 mm pitch, per Nexperia's Fig. 9.
How does the temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
With a typical SZ of +33.0 mV/K, the Zener voltage increases ~3.3 V across a 100 K range. At IZ = 2 mA, this yields ~9.2 % full-scale drift - acceptable for clamping but requires compensation in precision references via resistor networks or active circuitry.
Can Pin 2 be grounded or left unconnected on the PCB?
Pin 2 is internally not connected (n.c.) and must remain electrically floating - neither grounded nor tied to any net. Routing traces or applying solder mask to this pad is unnecessary and may risk mechanical stress or unintended coupling in high-frequency layouts.
BZX84W-C36-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84W-Q
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±5.56%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 25.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84W-C36-QX FAQ
1.How can I place an order for BZX84W-C36-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-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 BZX84W-C36-QX reliable?
The price and inventory of BZX84W-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 BZX84W-C36-QX is usually 5 days.
3.What payment methods are accepted for BZX84W-C36-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C36-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C36-QX?
BZX84W-C36-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-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 BZX84W-C36-QX?
For technical support, including BZX84W-C36-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C36-QX requirements.
6.How does Aetrix verify that BZX84W-C36-QX is sourced from the original manufacturer or authorized distributors?
All BZX84W-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 BZX84W-C36-QX meets industry standards.
7.What is the process for return or replacement of BZX84W-C36-QX?
All BZX84W-C36-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-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 BZX84W-C36-QX part is unused and in its original packaging.
Return procedure for BZX84W-C36-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-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
Diodes Incorporated
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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
Diodes Incorporated
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