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Nexperia USA Inc. BZV90-C3V9,115
- Part No.:
- BZV90-C3V9,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
BZV90-C3V9,115.pdf
- Description:
- DIODE ZENER 3.9V 1.5W SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:808
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Product details
Overview
BZV90-C3V9,115 from Nexperia is a medium-power Zener voltage regulator diode in SOT223 package, designed for precision DC voltage reference and regulation in low-to-medium current applications. It delivers a nominal Zener voltage of 3.9 V (±5%), with differential resistance ≤90 Ω at 5 mA test current, 1.5 W total power dissipation, and junction temperature up to 150 °C - used in power supply feedback loops and analog sensor biasing circuits.
For engineers reviewing the BZV90-C3V9,115 datasheet, BZV90-C3V9,115 pinout, BZV90-C3V9,115 application, or BZV90-C3V9,115 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (83.3 K/W), non-repetitive peak reverse power (40 W), and SOT223 thermal pad layout compatibility with FR4 PCB copper area ≥2 cm².
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage regulation across its specified test current range (5 mA). Its temperature coefficient of −2.5 mV/K at IZ = 5 mA enables stable reference performance over −65 °C to +150 °C ambient, supported by low dynamic impedance and minimal capacitance (≤450 pF at 0 V).
The device uses silicon planar epitaxial construction and is optimized for surface-mount reliability under transient surge conditions (100 μs square wave, up to 40 W peak). Pin configuration integrates dual cathode terminals (pins 2 & 4) for enhanced current handling and thermal path continuity through the exposed collector pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.7 V to 4.1 V at 5 mA - ensures ±5% regulation accuracy for 3.3 V–5 V rail monitoring |
| Differential Resistance rdif | ≤90 Ω at IZ = 5 mA - maintains low output impedance for stable reference under load variation |
| Total Power Dissipation Ptot | 1500 mW at Tamb = 25 °C on 2 cm² FR4 copper - supports continuous operation in compact industrial PCB layouts |
| Non-repetitive Peak Power PZSM | 40 W for 100 μs - withstands ESD and surge transients without degradation |
| Junction Temperature Tj | −65 °C to +150 °C - enables deployment in automotive under-hood and industrial control environments |
| Reverse Current IR | ≤3 μA at VR = 3 V - ensures low leakage in high-impedance reference nodes |
| Thermal Resistance Rth j-a | 83.3 K/W - defines required PCB copper area and heatsinking for thermal management |
Pinout & Package
SOT223 plastic surface-mount package with exposed thermal pad (collector pad) for efficient heat transfer; 4-terminal configuration optimized for power dissipation and mechanical robustness in automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Main anode connection; routed to ground or low-side reference node in shunt regulator topology |
| 2 & 4 | Cathode | Dual cathode terminals - parallel connection lowers effective series resistance and improves thermal conduction to PCB |
| 3 | Anode | Secondary anode terminal - provides redundant grounding path and enhances solder joint reliability |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance (E24 range) | Enables direct replacement across 37 standard voltages without recalibration in production-grade designs |
| 1500 mW continuous power rating | Supports higher-current shunt regulation than standard 400 mW Zeners, reducing need for external pass transistors |
| Low temperature coefficient (−2.5 mV/K) | Minimizes drift in temperature-sensitive analog circuits such as sensor signal conditioning and ADC references |
| 40 W non-repetitive peak power capability | Provides built-in transient suppression for IEC 61000-4-2 Level 4 ESD events without additional TVS devices |
| SOT223 thermal pad design | Enables >50% improvement in thermal resistance vs. SOD-123, critical for sustained operation in enclosed enclosures |
Applications
| Power Supply Feedback Regulation | Microcontroller Voltage Reference |
|---|---|
Use Scenario: Stabilizing output voltage in isolated flyback or buck-derived auxiliary supplies for industrial PLCs. IC Role / Device Role / Timing Role: Shunt voltage reference in optocoupler feedback loop controlling primary-side PWM duty cycle. Use Value: Maintains ±1.5% output regulation across line/load/temperature with no active compensation components. | Use Scenario: Providing precise 3.9 V reference for internal ADC and brown-out detection in battery-powered IoT edge nodes. IC Role / Device Role / Timing Role: Low-drift analog reference source replacing external bandgap ICs in cost-constrained MCU subsystems. Use Value: Eliminates need for dedicated reference IC while delivering <10 ppm/°C effective TC via matched layout and low rdif. |
| Sensor Biasing Circuit | Overvoltage Clamp for RS-485 Transceivers |
Use Scenario: Biasing bridge-based pressure sensors in HVAC control modules operating from 5 V rails. IC Role / Device Role / Timing Role: Stable excitation voltage source for Wheatstone bridge arms, minimizing offset drift. Use Value: Reduces sensor zero-point error by >40% vs. resistor-divider bias due to low dynamic impedance and thermal stability. | Use Scenario: Protecting RS-485 receiver inputs against induced surges in factory automation cabling. IC Role / Device Role / Timing Role: Fast-acting clamp limiting common-mode voltage to 3.9 V above ground during transients. Use Value: Prevents latch-up in transceiver ICs while maintaining signal integrity up to 250 kbps with <1 ns response latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C3V9,215 | Same Zener voltage (3.9 V), but SOT23 package, 300 mW Ptot, higher rdif (95 Ω), no dual-cathode thermal path | Limited to low-power signal-level clamping; unsuitable for >100 mA regulation loads | Select when board space is constrained and thermal budget allows ≤300 mW continuous dissipation |
| MMSZ4684T1G | 3.9 V Zener, SOD-123, 500 mW Ptot, rdif = 90 Ω, Rth j-a = 270 K/W - significantly higher thermal resistance | Requires larger copper pour or forced air cooling for same power level; not recommended for sealed enclosures | Select only for prototyping or low-volume applications where SOT223 reflow profile is unavailable |
Compared with BZX84-C3V9,215 and MMSZ4684T1G, the BZV90-C3V9,115 offers superior thermal performance (83.3 K/W vs. >270 K/W), 3× higher continuous power handling, and dual-cathode layout enabling robust current sharing - making it the preferred choice for industrial power regulation where reliability and thermal margin are critical.
Availability
BZV90-C3V9,115 is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface modules, and RS-485 communication protection circuits requiring stable component supply and long-term lifecycle support.
Supply support for BZV90-C3V9,115 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 leader in high-volume discrete, logic, and PowerMOS semiconductors, serving automotive, industrial, computing, and consumer markets with focus on reliability, efficiency, and manufacturability.
The BZV90 series belongs to Nexperia's precision Zener voltage regulator portfolio, engineered for stable DC reference and shunt regulation in space-constrained, thermally demanding applications - especially where ESD resilience and long-term parametric stability are required.
FAQ
What is the maximum continuous reverse current this Zener can handle at 3.9 V?
The BZV90-C3V9,115 is rated for continuous forward current up to 400 mA, but as a Zener regulator it operates in reverse bias. At its nominal 3.9 V Zener voltage, the maximum continuous reverse current is determined by power dissipation: IZmax = Ptot/VZ ≈ 1500 mW / 3.9 V ≈ 385 mA - assuming ambient temperature ≤25 °C and proper PCB thermal design per datasheet note 1.
Does this device require a series resistor in all applications?
Yes - a current-limiting resistor is mandatory to prevent thermal runaway. The resistor value must ensure that worst-case current (accounting for input voltage variation and temperature drift) stays within the 1500 mW power limit and does not exceed the 400 mA absolute maximum forward current rating. Typical designs use 100 Ω to 1 kΩ depending on supply rail and load.
Can pins 2 and 4 be used independently, or must they be shorted externally?
Pins 2 and 4 are internally connected cathodes and must be shorted together on the PCB. Using them separately violates the device's thermal and electrical design - the dual-cathode structure is intended to reduce effective series resistance and improve heat spreading into the PCB copper plane, not to support independent circuit paths.
Is this Zener suitable for use as an ESD protection device on USB data lines?
No - while the BZV90-C3V9,115 has 40 W non-repetitive peak power capability, its 450 pF capacitance at 0 V and relatively slow response (microsecond-scale turn-on) make it unsuitable for high-speed data line protection. Dedicated low-capacitance TVS diodes like PESD5V0S1BA are required for USB 2.0 signal integrity.
BZV90-C3V9,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.9 V
- Tolerance:
- ±5%
- Power - Max:
- 1.5 W
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 50 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
BZV90-C3V9,115 FAQ
1.How can I place an order for BZV90-C3V9,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZV90-C3V9,115 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 BZV90-C3V9,115 reliable?
The price and inventory of BZV90-C3V9,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZV90-C3V9,115 is usually 5 days.
3.What payment methods are accepted for BZV90-C3V9,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZV90-C3V9,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZV90-C3V9,115?
BZV90-C3V9,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZV90-C3V9,115 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 BZV90-C3V9,115?
For technical support, including BZV90-C3V9,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZV90-C3V9,115 requirements.
6.How does Aetrix verify that BZV90-C3V9,115 is sourced from the original manufacturer or authorized distributors?
All BZV90-C3V9,115 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 BZV90-C3V9,115 meets industry standards.
7.What is the process for return or replacement of BZV90-C3V9,115?
All BZV90-C3V9,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZV90-C3V9,115, 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 BZV90-C3V9,115 part is unused and in its original packaging.
Return procedure for BZV90-C3V9,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZV90-C3V9,115 Tags
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