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Nexperia USA Inc. BZB984-C3V9,115
- Part No.:
- BZB984-C3V9,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- SOT-663
- Datasheet:
-
BZB984-C3V9,115.pdf
- Description:
- DIODE ZENER ARRAY 3.9V SOT663
- Quantity:
- Payment:
- Shipping:
Inventory:62
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Product details
Overview
BZB984-C3V9,115 from Nexperia is a dual Zener voltage regulator diode in SOT663 package with nominal 3.9 V working voltage, ±5% tolerance, 400 Ω max differential resistance at IZ = 5 mA, and 3 µA max reverse current at VR = 1 V, used for low-power voltage reference and ESD protection in space-constrained consumer and industrial PCBs.
For engineers reviewing the BZB984-C3V9,115 datasheet, BZB984-C3V9,115 pinout, BZB984-C3V9,115 application, or BZB984-C3V9,115 equivalent, this device supports dual-cathode common-anode configuration for bidirectional clamping, offers thermal resistance of 125 K/W (junction-to-solder point, two diodes loaded), and delivers stable regulation under 10 mA forward bias with ≤0.9 V forward voltage.
Technical Context
This double Zener diode integrates two independent 3.9 V Zener elements sharing a common anode terminal, enabling symmetrical voltage clamping across signal lines or supply rails. Its design supports bidirectional transient suppression without external polarity reversal.
The device operates within −55 °C to +150 °C ambient range, with junction temperature limited to 150 °C, and exhibits a negative temperature coefficient of −1.9 mV/K at IZ = 5 mA - critical for thermal drift compensation in precision reference circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ nominal | 3.9 V - precise regulation point for low-voltage logic rail stabilization |
| VZ tolerance | ±5% - ensures predictable clamping threshold across production lots |
| rdif max | 400 Ω at IZ = 5 mA - defines dynamic impedance affecting regulation accuracy under load variation |
| IR max | 3 µA at VR = 1 V - guarantees minimal leakage in standby mode for battery-powered systems |
| Ptot (2 diodes) | 425 mW at Tamb ≤ 25 °C - sets maximum continuous power handling on standard FR4 PCB |
| VF max | 0.9 V at IF = 10 mA - enables low-loss forward conduction during overvoltage events |
| Tj max | 150 °C - determines thermal derating curve for high-temperature environments |
Pinout & Package
SOT663 ultra-small flat plastic SMD package (1.7 × 1.5 × 0.5 mm) with gull-wing leads, optimized for high-density routing and reflow soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | K1 | First cathode - connects to regulated node or signal line requiring negative-side clamping |
| 2 | K2 | Second cathode - enables independent or mirrored clamping path relative to common anode |
| 3 | CA | Common anode - ties both Zener elements to reference potential (e.g., ground or VCC) |
Key Features
| Feature | Design Value |
|---|---|
| Dual Zener architecture | Two matched 3.9 V Zeners sharing CA terminal - enables single-component bidirectional voltage limiting |
| Ultra-compact footprint | SOT663 package (1.7 × 1.5 mm) - saves >60% board area vs. SO-33 or SOT23-3 dual-diode alternatives |
| Low thermal resistance | Rth(j-sp) = 125 K/W (2 diodes loaded) - improves power dissipation margin in thermally constrained layouts |
| ESD robustness | Non-repetitive peak reverse power up to 40 W (tp = 100 µs) - meets IEC 61000-4-2 Level 4 immunity requirements |
| Stable temperature coefficient | −1.9 mV/K at IZ = 5 mA - minimizes output drift over −40 °C to +85 °C operating range |
Applications
| USB Data Line Protection | Low-Voltage Microcontroller Reference |
|---|---|
|
Use Scenario: Clamping ±15 kV ESD transients on USB D+/D− lines before entering USB PHY IC. IC Role / Device Role / Timing Role: Bidirectional voltage clamp protecting high-speed data integrity without signal distortion. Use Value: Dual-cathode configuration allows symmetric clamping to ground (CA = GND), eliminating need for discrete back-to-back diodes. |
Use Scenario: Providing stable 3.9 V reference for ADC input scaling or brown-out detection in battery-powered IoT sensors. IC Role / Device Role / Timing Role: Precision Zener shunt regulator establishing known voltage threshold for analog monitoring circuits. Use Value: ±5% tolerance and 400 Ω rdif ensure repeatable trip points across temperature and supply variations. |
| Industrial Sensor Signal Conditioning | Power Rail Clamp in Wearables |
|
Use Scenario: Limiting analog sensor output swing (e.g., 0–5 V pressure transducer) to prevent overvoltage damage to downstream op-amps. IC Role / Device Role / Timing Role: Passive overvoltage limiter placed at signal chain input stage. Use Value: 0.9 V forward drop enables safe conduction during positive excursions while maintaining low quiescent current. |
Use Scenario: Suppressing 12 V surge coupling onto 3.3 V LDO input in compact wearable charging circuitry. IC Role / Device Role / Timing Role: Common-anode Zener clamp diverting excess energy to ground during fast transients. Use Value: 425 mW total dissipation and SOT663 thermal performance support short-duration surges without thermal runaway. |
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 |
|---|---|---|---|
| ON Semiconductor MMBZ5226BS | Single 3.9 V Zener in SOT-323; no dual-cathode topology | Requires external pairing for bidirectional clamping; larger board footprint | Select when only unidirectional regulation is needed and cost-per-diode is prioritized |
| Vishay PLZ3V9 | Single 3.9 V Zener in SOD-323; 10% tolerance; 1000 Ω rdif | Limited regulation accuracy and higher impedance reduce stability in precision references | Choose for non-critical clamping where tighter tolerance and lower rdif are not required |
Compared with MMBZ5226BS and PLZ3V9, BZB984-C3V9,115 uniquely integrates dual 3.9 V Zeners in one SOT663 package, delivering bidirectional clamping capability, ±5% tolerance, and 400 Ω differential resistance - making it optimal for space-constrained, high-accuracy ESD and regulation tasks where discrete pairing would increase BOM count and layout complexity.
Availability
BZB984-C3V9,115 is available at Aetrix Electronics and suitable for USB interface protection, microcontroller reference generation, industrial sensor conditioning, and wearable power rail clamping requiring stable component supply and consistent parametric performance across production batches.
Supply support for BZB984-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 semiconductor expert specializing in high-performance, reliable standard-logic and power discretes, with leadership in automotive-qualified and industrial-grade components.
The BZB984 series belongs to Nexperia's precision Zener regulator portfolio, engineered specifically for low-power bidirectional voltage control and ESD protection in miniaturized consumer, computing, and industrial electronics.
FAQ
What is the maximum continuous power dissipation for BZB984-C3V9,115 when both diodes are active?
The maximum total power dissipation is 425 mW at ambient temperature ≤ 25 °C when mounted on a standard FR4 PCB with single-sided copper and tin-plated finish. Derating is required above 25 °C per the thermal resistance of 294 K/W (junction-to-ambient, free air).
Can BZB984-C3V9,115 be used for bidirectional signal line protection?
Yes - its common-anode dual-cathode structure allows direct connection across differential or single-ended signal lines, clamping positive excursions via K1–CA and negative excursions via K2–CA, enabling true bidirectional transient suppression without polarity-sensitive placement.
What is the reverse leakage current specification at 1 V reverse bias?
The maximum reverse current is 3 µA at VR = 1 V and Tj = 25 °C, as specified in Table 8 of the datasheet. This low leakage supports use in battery-backed or ultra-low-power monitoring circuits where standby current must remain below 10 µA.
Is reflow soldering the only recommended assembly method for SOT663?
Yes - the datasheet explicitly states "Reflow soldering is the only recommended soldering method" for the SOT663 package. Wave or hand soldering is not supported due to thermal stress risks and lead coplanarity requirements defined in Figure 10's footprint guidelines.
BZB984-C3V9,115 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):
- 3.9 V
- Tolerance:
- ±5%
- Power - Max:
- 265 mW
- Impedance (Max) (Zzt):
- 85 Ohms
- Current - Reverse Leakage @ Vr:
- 3 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-C3V9,115 FAQ
1.How can I place an order for BZB984-C3V9,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB984-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 BZB984-C3V9,115 reliable?
The price and inventory of BZB984-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 BZB984-C3V9,115 is usually 5 days.
3.What payment methods are accepted for BZB984-C3V9,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB984-C3V9,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB984-C3V9,115?
BZB984-C3V9,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB984-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 BZB984-C3V9,115?
For technical support, including BZB984-C3V9,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB984-C3V9,115 requirements.
6.How does Aetrix verify that BZB984-C3V9,115 is sourced from the original manufacturer or authorized distributors?
All BZB984-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 BZB984-C3V9,115 meets industry standards.
7.What is the process for return or replacement of BZB984-C3V9,115?
All BZB984-C3V9,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZB984-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 BZB984-C3V9,115 part is unused and in its original packaging.
Return procedure for BZB984-C3V9,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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