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Nexperia USA Inc. BZB984-C3V3,115
- Part No.:
- BZB984-C3V3,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- SOT-663
- Datasheet:
-
BZB984-C3V3,115.pdf
- Description:
- DIODE ZENER ARRAY 3.3V SOT663
- Quantity:
- Payment:
- Shipping:
Inventory:912
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Product details
Overview
BZB984-C3V3,115 from Nexperia is a dual Zener voltage regulator diode in SOT663 package with nominal 3.3 V regulation, ±5% tolerance, 350 Ω typical differential resistance at IZ = 5 mA, and 5 µA maximum reverse current at VR = 2.5 V - used for low-power voltage reference and ESD clamping in space-constrained consumer and industrial PCBs.
For engineers reviewing the BZB984-C3V3,115 datasheet, BZB984-C3V3,115 pinout, BZB984-C3V3,115 application, or BZB984-C3V3,115 equivalent, key selection criteria include common-anode dual-Zener topology, 425 mW total power dissipation (2 diodes), thermal resistance to solder point of 125 K/W, and SOT663 footprint compatibility with high-density routing.
Technical Context
This device integrates two independent Zener diodes sharing a common anode terminal, enabling bidirectional voltage clamping or dual-rail reference generation in a single ultra-small SMD package. It operates within a -55 °C to +150 °C ambient range and supports non-repetitive surge handling up to 40 W for 100 µs pulses.
The BZB984-C3V3 exhibits a negative temperature coefficient of -1.8 mV/K at IZ = 5 mA, stable junction capacitance of 450 pF at 1 MHz and 0 V, and forward voltage ≤ 0.9 V at IF = 10 mA - confirming suitability for low-voltage rail stabilization and transient suppression in 3.3 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ nominal | 3.3 V - precise regulation point for 3.3 V logic rail monitoring or biasing |
| VZ tolerance | ±5% - ensures predictable clamping threshold across production lots |
| rdif | 350 Ω max at IZ = 5 mA - defines dynamic impedance affecting regulation stability under load variation |
| IR @ VR = 2.5 V | 5 µA max - guarantees minimal leakage in standby mode for battery-sensitive designs |
| Ptot (2 diodes) | 425 mW - sets maximum continuous power budget on standard FR4 PCB |
| Tj max | 150 °C - determines thermal derating margin for compact enclosure applications |
| Cd | 450 pF at 1 MHz, 0 V - impacts high-frequency noise filtering and ESD response speed |
Pinout & Package
SOT663 is a 3-lead ultra-small flat plastic surface-mount package (1.7 × 1.5 × 0.5 mm) with gull-wing leads optimized for reflow soldering and high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | K1 | First cathode - connects to regulated node requiring 3.3 V clamping or reference |
| 2 | K2 | Second cathode - enables independent connection to second circuit node or complementary polarity clamp |
| 3 | CA | Common anode - tied to system ground or low-impedance return path for dual-diode operation |
Key Features
| Feature | Design Value |
|---|---|
| Dual Zener topology | Two independent 3.3 V Zeners sharing one anode - reduces component count vs. discrete dual-diode solutions |
| Ultra-small SOT663 footprint | 1.7 × 1.5 mm area - fits into <1.0 mm pitch routing zones on wearables and IoT sensor modules |
| ESD robustness | 40 W non-repetitive peak power (100 µs) - meets IEC 61000-4-2 Level 4 immunity requirements when properly decoupled |
| Low thermal resistance | 125 K/W junction-to-solder-point - enables reliable operation without thermal vias in cost-sensitive designs |
| Stable temperature coefficient | -1.8 mV/K at 5 mA - minimizes drift over industrial temperature range (-40 °C to +85 °C ambient) |
Applications
| USB Interface Protection | 3.3 V Microcontroller Reference |
|---|---|
|
Use Scenario: Clamping D+ and D- lines against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Dual-cathode Zener provides symmetrical bidirectional clamping referenced to USB ground. Use Value: 450 pF capacitance and 40 W surge rating suppress transients without distorting 480 Mbps data eye integrity. |
Use Scenario: Providing stable 3.3 V reference for ADC input scaling or reset threshold detection. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown supplies low-noise, temperature-compensated voltage reference. Use Value: ±5% tolerance and -1.8 mV/K TC ensure <±2% total error over -40 °C to +85 °C ambient. |
| IoT Sensor Node Power Rail Clamp | Low-Power Wearable Battery Monitoring |
|
Use Scenario: Protecting supply rails of MEMS accelerometers and environmental sensors from voltage surges. IC Role / Device Role / Timing Role: Common-anode configuration allows simultaneous clamping of VDD and I/O lines to GND. Use Value: 5 µA max reverse leakage at 2.5 V preserves battery life in always-on sensing modes. |
Use Scenario: Monitoring lithium coin-cell voltage (2.0–3.3 V) with comparator hysteresis using Zener knee voltage. IC Role / Device Role / Timing Role: Forward-biased Zener used as precision 0.9 V drop element for low-current voltage divider. Use Value: 0.9 V max VF at 10 mA enables accurate low-voltage threshold detection with minimal quiescent current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5226BS-7-F | Single Zener (3.3 V), SOT-363 package, 200 mW Ptot, no common-anode topology | Requires two devices for dual-clamp function; higher board area and assembly cost | Select when only single-rail clamping is needed and space permits discrete placement |
| BZX84-C3V3,215 | Single Zener (3.3 V), SOT-23 package, 300 mW Ptot, no integrated dual-diode structure | Lacks shared anode; cannot provide matched dual-node clamping without external wiring | Prefer for legacy designs where SOT-23 footprint is fixed and dual functionality is implemented externally |
Compared with MMBZ5226BS-7-F and BZX84-C3V3,215, the BZB984-C3V3,115 delivers true dual-Zener integration in one SOT663 footprint, reducing layout complexity and improving matching between clamping paths - critical for differential signal protection and rail-to-rail reference generation.
Availability
BZB984-C3V3,115 is available at Aetrix Electronics and suitable for USB interface protection, 3.3 V microcontroller reference, and IoT sensor node power rail clamp applications requiring stable component supply and long-term obsolescence management.
Supply support for BZB984-C3V3,115 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 semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, reliability, and miniaturization.
The BZB984 series belongs to Nexperia's precision Zener regulator portfolio, engineered specifically for space-constrained, low-power voltage reference and bidirectional ESD protection in consumer and industrial electronics.
FAQ
What is the maximum continuous power dissipation for BZB984-C3V3,115 on a standard FR4 PCB?
The device supports 425 mW total power dissipation when both diodes are loaded on a single-sided, tin-plated FR4 PCB per IEC 60134 limiting values. Derating is required above 25 °C ambient, with thermal resistance to ambient of 294 K/W for two-diode operation.
Can BZB984-C3V3,115 be used for bidirectional TVS protection?
Yes - its common-anode dual-cathode structure enables symmetrical clamping between either cathode and ground. With 40 W non-repetitive peak power rating at 100 µs, it meets IEC 61000-4-2 Level 4 when combined with appropriate series impedance and PCB layout.
What is the forward voltage specification and how is it relevant in design?
Forward voltage is guaranteed ≤ 0.9 V at IF = 10 mA. This value matters when using the diode in forward conduction mode - for example, as a low-drop voltage shifter or precision clamp in low-voltage analog circuits where forward conduction occurs during signal excursions.
How does the -1.8 mV/K temperature coefficient affect regulation accuracy?
At IZ = 5 mA, the coefficient causes VZ to decrease by 1.8 mV per Kelvin rise in junction temperature. Over a 125 K junction range (25 °C to 150 °C), this yields ~225 mV shift - meaning system-level thermal design must limit ΔTj to maintain regulation within ±2% of 3.3 V.
BZB984-C3V3,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOT-663
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Configuration:
- 1 Pair Common Anode
- Voltage - Zener (Nom) (Vz):
- 3.3 V
- Tolerance:
- ±5%
- Power - Max:
- 265 mW
- Impedance (Max) (Zzt):
- 85 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-663
BZB984-C3V3,115 FAQ
1.How can I place an order for BZB984-C3V3,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB984-C3V3,115 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 BZB984-C3V3,115 reliable?
The price and inventory of BZB984-C3V3,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZB984-C3V3,115 is usually 5 days.
3.What payment methods are accepted for BZB984-C3V3,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB984-C3V3,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB984-C3V3,115?
BZB984-C3V3,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB984-C3V3,115 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 BZB984-C3V3,115?
For technical support, including BZB984-C3V3,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB984-C3V3,115 requirements.
6.How does Aetrix verify that BZB984-C3V3,115 is sourced from the original manufacturer or authorized distributors?
All BZB984-C3V3,115 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 BZB984-C3V3,115 meets industry standards.
7.What is the process for return or replacement of BZB984-C3V3,115?
All BZB984-C3V3,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZB984-C3V3,115, 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 BZB984-C3V3,115 part is unused and in its original packaging.
Return procedure for BZB984-C3V3,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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