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Nexperia USA Inc. BZX84W-B36-QF
- Part No.:
- BZX84W-B36-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-B36-QF.pdf
- Description:
- DIODE ZENER 36V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,742
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Product details
Overview
BZX84W-B36-QF from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 36 V nominal Zener voltage at 5 mA, 350 Ω differential resistance, and 33.0 mV/K temperature coefficient. It delivers stable reference voltage in automotive power supply rails and high-frequency bias networks with 275 mW total power dissipation on FR4 PCB.
For engineers reviewing the BZX84W-B36-QF datasheet, BZX84W-B36-QF pinout, BZX84W-B36-QF application, or BZX84W-B36-QF equivalent, this page provides verified Zener voltage, thermal resistance, reverse leakage, forward voltage, and AEC-Q101 qualification status to support automotive-grade voltage reference selection and layout validation.
Technical Context
This Zener diode operates in reverse breakdown to maintain precise DC voltage under varying load and temperature conditions. Its ±2 % tolerance ensures tight regulation across production batches, while the 33.0 mV/K temperature coefficient enables predictable drift compensation in temperature-sensitive circuits.
The device features low 1.0 pF junction capacitance at 1 MHz and 0 V bias, supporting use in RF decoupling and fast transient suppression. With 40 W non-repetitive peak reverse power capability and 150 °C maximum junction temperature, it withstands surge events in automotive 12 V/24 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 35.3 V to 36.7 V at IZ = 5 mA - defines regulated output voltage window for precision reference design |
| Differential Resistance (rdif) | 350 Ω max at IZ = 5 mA - determines load regulation error under current variation |
| Temperature Coefficient (SZ) | 33.0 mV/K typical at IZ = 2 mA - quantifies voltage drift per degree Celsius for thermal stability analysis |
| Reverse Leakage (IR) | 1 µA max at VR = 2 V - limits standby current in low-power voltage monitor circuits |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - sets minimum forward bias headroom for series-connected protection schemes |
| Total Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 PCB - establishes thermal derating baseline for board-level power budgeting |
| Junction-to-Ambient Thermal Resistance (Rth(j-a)) | 455 K/W - determines temperature rise above ambient per watt of dissipated power |
Pinout & Package
SOT323 (SC-70) leadless surface-mount plastic package with 3 terminals, 1.3 mm × 1.8 mm footprint, 0.65 mm pitch, and 0.25 mm maximum thickness. Designed for reflow and wave soldering per IPC-7351B standard land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node in Zener regulation configuration |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating-no PCB trace or thermal pad connection permitted |
| 3 | Cathode (K) | Reverse-biased terminal; connects to higher-potential node and serves as regulated output reference point |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| ±2 % Zener voltage tolerance | Enables tighter system-level voltage margining without post-production trimming |
| Low 1.0 pF junction capacitance | Minimizes signal distortion in RF coupling and high-speed switching node clamping |
| 40 W non-repetitive peak power | Supports transient overvoltage suppression in ISO 7637-2 pulse 1/2a/5a environments |
| 150 °C maximum junction temperature | Allows operation in under-hood automotive locations with minimal thermal derating |
Applications
| Automotive ECU Reference | Industrial Sensor Biasing |
|---|---|
Use Scenario: Providing stable 36 V reference for analog front-end circuitry in engine control modules exposed to wide ambient temperature swings (−40 °C to +125 °C). IC Role / Device Role / Timing Role: Zener voltage reference diode operating in reverse breakdown to clamp and regulate sensor excitation voltage. Use Value: ±2 % tolerance and 33.0 mV/K temperature coefficient enable <1.5 % total voltage error across full automotive temperature range without external compensation. |
Use Scenario: Supplying precision bias voltage to MEMS pressure sensors in industrial process monitoring equipment. IC Role / Device Role / Timing Role: Low-noise, low-capacitance voltage reference source for ratiometric ADC excitation. Use Value: 1.0 pF capacitance and sub-µA leakage preserve signal integrity and minimize measurement offset drift in high-impedance sensor interfaces. |
| High-Frequency Decoupling | Overvoltage Protection Clamp |
Use Scenario: High-frequency bypass in RF power amplifier bias networks where parasitic inductance limits capacitor effectiveness. IC Role / Device Role / Timing Role: Low-capacitance Zener shunt element absorbing GHz-range noise spikes near active devices. Use Value: 1.0 pF junction capacitance allows effective impedance below 100 Ω up to 160 MHz, complementing bulk ceramic capacitors. |
Use Scenario: Transient voltage suppression on 24 V CAN bus power lines subjected to load dump pulses per ISO 16750-2. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting rail voltage to 36 V during 40 V/100 ms surges. Use Value: 40 W non-repetitive peak power rating handles 100 µs surge energy without degradation, meeting automotive surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-C36-Q | ±5 % tolerance (34.0 V–38.0 V), higher 45 pF capacitance, same SOT323 package | Acceptable where system voltage margin > ±5 % and RF performance not critical | Select when cost sensitivity outweighs precision and high-frequency needs |
| MMSZ5245B-TP | ±5 % tolerance, 500 mW Ptot, SOD-123 package, 300 Ω rdif, no AEC-Q101 qualification | Higher power handling but lacks automotive qualification and tighter tolerance | Use only in non-automotive industrial designs requiring >275 mW dissipation |
Compared with BZX84W-C36-Q and MMSZ5245B-TP, the BZX84W-B36-QF offers superior voltage accuracy and automotive qualification at the expense of higher unit cost and lower power rating-making it optimal for safety-critical 36 V reference nodes where precision and reliability are non-negotiable.
Availability
BZX84W-B36-QF is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor conditioning, high-frequency decoupling, and overvoltage protection requiring stable component supply with guaranteed long-term continuity.
Supply support for BZX84W-B36-QF 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 delivering high-performance logic, discrete, and MOSFET solutions with emphasis on reliability, efficiency, and automotive-grade quality.
The BZX84W-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for stable voltage reference and regulation in harsh automotive and industrial environments.
FAQ
What is the maximum reverse current at 2 V for BZX84W-B36-QF?
The maximum reverse current (IR) is 1 µA at VR = 2 V, measured at Tj = 25 °C. This low leakage supports ultra-low-power biasing in battery-operated sensor nodes and ensures minimal quiescent current draw in always-on automotive subsystems.
Is BZX84W-B36-QF suitable for reflow soldering?
Yes-BZX84W-B36-QF is qualified for lead-free reflow soldering per J-STD-020. The SOT323 package uses standard IPC-7351B land pattern with 0.65 mm pitch and supports peak temperatures up to 260 °C for ≤30 seconds, matching JEDEC Level 1 moisture sensitivity requirements.
How does the temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
With a typical SZ of 33.0 mV/K and ΔT = 165 K, the worst-case Zener voltage shift is ±5.45 V. Combined with ±2 % initial tolerance (±0.72 V), total variation remains within ±6.17 V (±17.1 %) - acceptable for non-critical reference applications where system calibration compensates drift.
Can Pin 2 be used as a thermal pad or ground connection?
No-Pin 2 is internally not connected (n.c.) per Nexperia's official pinning diagram. Connecting it to any net risks mechanical stress on the die bond wire and violates the SOT323 mechanical specification. It must remain electrically and thermally isolated per datasheet guidance.
BZX84W-B36-QF 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:
- ±1.94%
- 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-B36-QF FAQ
1.How can I place an order for BZX84W-B36-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-B36-QF 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-B36-QF reliable?
The price and inventory of BZX84W-B36-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-B36-QF is usually 5 days.
3.What payment methods are accepted for BZX84W-B36-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-B36-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-B36-QF?
BZX84W-B36-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-B36-QF 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-B36-QF?
For technical support, including BZX84W-B36-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-B36-QF requirements.
6.How does Aetrix verify that BZX84W-B36-QF is sourced from the original manufacturer or authorized distributors?
All BZX84W-B36-QF 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-B36-QF meets industry standards.
7.What is the process for return or replacement of BZX84W-B36-QF?
All BZX84W-B36-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-B36-QF, 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-B36-QF part is unused and in its original packaging.
Return procedure for BZX84W-B36-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-B36-QF Tags
-
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
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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