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Nexperia USA Inc. BZX84W-C3V6F
- Part No.:
- BZX84W-C3V6F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C3V6F.pdf
- Description:
- DIODE ZENER 3.6V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:7,114
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Product details
Overview
BZX84W-C3V6F from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 3.6 V nominal Zener voltage at 5 mA, 275 mW total power dissipation, and 90 Ω differential resistance; used for precision low-voltage regulation in power supply feedback paths and reference circuits.
For engineers reviewing the BZX84W-C3V6F datasheet, BZX84W-C3V6F pinout, BZX84W-C3V6F application, or BZX84W-C3V6F equivalent, this page delivers verified electrical parameters, thermal behavior, SOT323 terminal mapping, and real-world use context for stable 3.6 V reference design in compact SMD systems.
Technical Context
This Zener diode operates in reverse breakdown with a specified Zener voltage of 3.40 V to 3.80 V at IZ = 5 mA, exhibiting a negative temperature coefficient of −2.4 mV/K across its operating current range. Its low 90 Ω differential resistance ensures tight regulation under varying load conditions.
Designed for surface-mount reliability, it features a maximum forward voltage of 0.9 V at 10 mA, non-repetitive peak reverse power dissipation up to 40 W for 100 µs pulses, and junction temperature limits from −55 °C to +150 °C - enabling operation in thermally constrained consumer and industrial PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.40 V to 3.80 V at IZ = 5 mA - defines stable regulation point for 3.3 V–3.6 V logic rail referencing |
| Tolerance | ±5 % - supports cost-sensitive designs where tighter tolerance is not required |
| Differential Resistance (rdif) | 90 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 PCB - sets maximum continuous DC power handling in standard layout |
| Reverse Current (IR) | 5 µA max at VR = 1 V - confirms low leakage in standby or high-impedance bias networks |
| Thermal Resistance (Rth(j-a)) | 455 K/W - quantifies junction-to-ambient thermal path for derating above 25 °C ambient |
| Capacitance (Cd) | 6 pF at f = 1 MHz, VR = 0 V - enables use in high-frequency filtering and noise-sensitive analog references |
Pinout & Package
SOT323 (SC-70) leadless plastic surface-mount package with 3 terminals; ultra-compact footprint (2.2 mm × 1.35 mm × 0.95 mm) optimized for high-density PCB assembly and reflow soldering.
| 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; ties to regulated output node and current-limiting resistor in standard shunt regulator topology |
Key Features
| Feature | Design Value |
|---|---|
| Wide Zener voltage range | 2.4 V to 75 V in E24 steps - supports system-level voltage referencing across multiple rail architectures |
| Low differential resistance | 90 Ω max at 5 mA - minimizes output voltage shift under dynamic load changes in feedback loops |
| High-frequency capability | 6 pF junction capacitance - preserves signal integrity in RF biasing and fast-switching power control |
| Robust pulse handling | 40 W non-repetitive peak reverse power (100 µs) - withstands transient overvoltage events without degradation |
| Standardized marking | M7% code per Table 4 - enables automated optical inspection and traceable lot identification on production boards |
Applications
| Power Supply Feedback Reference | Low-Voltage Microcontroller Reset Circuit |
|---|---|
Use Scenario: Provides stable 3.6 V reference in TL431-based adjustable SMPS feedback divider network. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise error amplifier setpoint. Use Value: Enables ±1.5 % output voltage accuracy over line/load/temperature with minimal external components. |
Use Scenario: Generates clean reset threshold for 3.3 V microcontrollers during brown-out detection. IC Role / Device Role / Timing Role: Precision voltage threshold element triggering POR circuitry. Use Value: Delivers repeatable 3.6 V trip point with <5 µA leakage, reducing false resets in battery-powered devices. |
| ADC Voltage Reference Buffer | ESD-Suppressed Signal Conditioning Node |
Use Scenario: Stabilizes reference input to 12-bit SAR ADC in sensor interface PCB. IC Role / Device Role / Timing Role: Low-noise, low-capacitance voltage clamp for analog reference rail. Use Value: Maintains <0.5 LSB INL error by limiting reference rail drift to ±12 mV over 0–70 °C. |
Use Scenario: Protects op-amp input stage in industrial 4–20 mA transmitter front-end. IC Role / Device Role / Timing Role: Bidirectional clamping device limiting common-mode transients. Use Value: Absorbs >1 kV HBM ESD pulses while adding only 6 pF parasitic capacitance to signal path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5226BS | 3.3 V nominal, ±5 %, 225 mW Ptot, 150 Ω rdif, SOT-23 package | Lower Zener voltage and higher dynamic impedance - less suitable for tight 3.6 V regulation | Select when legacy SOT-23 footprint compatibility is required and 3.3 V reference suffices |
| Vishay BZX84-C3V6 | Identical 3.6 V/±5 % spec, but in legacy SOT-23 package with 350 mW Ptot rating | Higher power rating allows greater current margin but larger board area and thermal mass | Prefer for high-reliability industrial designs needing extended power headroom and established qualification history |
Compared with MMBZ5226BS, BZX84W-C3V6F offers tighter regulation via lower rdif and exact 3.6 V targeting; versus BZX84-C3V6, it trades 75 mW power margin for 30 % smaller PCB footprint and improved high-frequency response due to lower Cd.
Availability
BZX84W-C3V6F is available at Aetrix Electronics and suitable for power supply feedback referencing, microcontroller reset conditioning, ADC reference stabilization, and ESD-protected signal conditioning requiring stable component supply and consistent parametric performance.
Supply support for BZX84W-C3V6F 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, reliable discrete, logic, and MOSFET solutions with focus on efficiency, miniaturization, and automotive-grade robustness.
BZX84W series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for space-constrained, high-frequency SMD regulation and voltage referencing in consumer, industrial, and computing applications.
FAQ
What is the maximum continuous reverse current the BZX84W-C3V6F can sustain at 25 °C?
The device is rated for a maximum total power dissipation of 275 mW at 25 °C ambient on a standard FR4 PCB. At its nominal 3.6 V Zener voltage, this corresponds to a maximum continuous reverse current of approximately 76 mA (275 mW ÷ 3.6 V), assuming no additional thermal derating.
Does the n.c. pin (Pin 2) require grounding or thermal connection on the PCB?
No - Pin 2 is internally not connected and must remain electrically floating. Neither grounding nor thermal pad attachment is permitted; doing so may compromise mechanical integrity or cause unintended parasitic coupling in high-frequency layouts.
How does the −2.4 mV/K temperature coefficient affect long-term voltage stability?
This negative coefficient means the Zener voltage decreases by 2.4 mV per Kelvin rise in junction temperature. Over a 100 °C rise (e.g., from 25 °C to 125 °C), VZ shifts down ~240 mV - a −6.7 % change relative to 3.6 V - requiring thermal design consideration in precision reference applications.
Can BZX84W-C3V6F be used in place of a 3.3 V Zener for USB 3.3 V rail monitoring?
No - its 3.40–3.80 V Zener range exceeds the 3.3 V rail tolerance (typically ±5 % = 3.14–3.47 V). Using it risks false overvoltage detection; a 3.3 V-rated Zener like BZX84W-C3V3 (3.10–3.50 V) is the correct selection for that function.
BZX84W-C3V6F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84W
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.6 V
- Tolerance:
- ±5%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84W-C3V6F FAQ
1.How can I place an order for BZX84W-C3V6F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C3V6F 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-C3V6F reliable?
The price and inventory of BZX84W-C3V6F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-C3V6F is usually 5 days.
3.What payment methods are accepted for BZX84W-C3V6F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C3V6F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C3V6F?
BZX84W-C3V6F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C3V6F 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-C3V6F?
For technical support, including BZX84W-C3V6F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C3V6F requirements.
6.How does Aetrix verify that BZX84W-C3V6F is sourced from the original manufacturer or authorized distributors?
All BZX84W-C3V6F 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-C3V6F meets industry standards.
7.What is the process for return or replacement of BZX84W-C3V6F?
All BZX84W-C3V6F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C3V6F, 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-C3V6F part is unused and in its original packaging.
Return procedure for BZX84W-C3V6F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C3V6F Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ4682T1G
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MM5Z5V1ST1G
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SMAJ4744A-TP
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