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Diodes Incorporated BZX84C3V9TS-7-F
- Part No.:
- BZX84C3V9TS-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BZX84C3V9TS-7-F.pdf
- Description:
- DIODE ZENER ARRAY 3.9V SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:6,609
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Product details
Overview
BZX84C3V9TS-7-F from Diodes Incorporated is a triple-surface-mount Zener diode array with three isolated 3.9 V (nominal) Zener elements in a single SOT-363 package, rated for 200 mW total power dissipation, 90 Ω maximum Zener impedance at 5 mA, and reverse current ≤3.0 µA at 1.0 V, used for precision voltage reference and overvoltage protection in compact power management circuits.
For engineers reviewing the BZX84C3V9TS-7-F datasheet, BZX84C3V9TS-7-F pinout, BZX84C3V9TS-7-F application, or BZX84C3V9TS-7-F equivalent, key selection criteria include nominal Zener voltage tolerance (±5.1%), thermal resistance (625 °C/W), isolation between elements, and SOT-363 footprint compatibility with high-density PCB layouts.
Technical Context
This device integrates three electrically isolated Zener diodes sharing only the common SOT-363 thermal and mechanical structure. Each element operates independently with specified Zener voltage (3.9 V ±0.2 V), test current of 5 mA, and temperature coefficient of –3.5 to 0 mV/°C.
It delivers stable regulation under low-current conditions (IZK = 1.0 mA, VR = 1.0 V), supports fast transient suppression via low dynamic impedance (ZZT ≤90 Ω), and maintains operation across –65 °C to +150 °C ambient temperature range without derating below 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 3.9 V - precise clamping threshold for 3.3 V rail protection and biasing |
| Zener Voltage Tolerance | ±0.2 V (min/max: 3.7–4.1 V) - ensures predictable trip point in safety-critical sensing |
| Power Dissipation | 200 mW - limits thermal rise on FR4 PCB with recommended pad layout |
| Zener Impedance | ≤90 Ω at 5 mA - maintains regulation stability under varying load currents |
| Reverse Current | ≤3.0 µA at 1.0 V - minimizes leakage in battery-backed or ultra-low-power circuits |
| Thermal Resistance | 625 °C/W - defines junction-to-ambient temperature rise per milliwatt dissipated |
| Operating Temperature | –65 °C to +150 °C - supports industrial and automotive under-hood environments |
Pinout & Package
SOT-363 (SC-70-6) ultra-small surface-mount package with molded plastic case (UL 94V-0), 0.006 g mass, and matte tin-plated Alloy 42 leadframe for RoHS-compliant solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode of Diode 1 | Input terminal for first Zener element; connects to protected node or reference source |
| A2 | Anode of Diode 2 | Independent anode for second Zener; enables dual-rail clamping or redundancy |
| A3 | Anode of Diode 3 | Third isolated anode; supports multi-voltage domain monitoring or cascaded regulation |
| C1 | Cathode of Diode 1 | Output/reference terminal for first Zener; ties to ground or regulated return path |
| C2 | Cathode of Diode 2 | Independent cathode for second element; avoids shared-path noise coupling |
| C3 | Cathode of Diode 3 | Third cathode; allows independent biasing or series-connected Zener strings |
Key Features
| Feature | Design Value |
|---|---|
| Triple isolated Zener elements | Enables simultaneous regulation/clamping of three independent signal or power nodes in one footprint |
| Low Zener impedance (≤90 Ω) | Reduces output voltage deviation under dynamic load changes, improving reference accuracy |
| Lead-free and RoHS compliant | Meets global environmental compliance requirements without compromising solder joint reliability |
| Moisture sensitivity Level 1 | Eliminates bake preconditioning before reflow, reducing manufacturing cost and cycle time |
| Wide operating temperature range | Supports deployment in uncontrolled environments such as industrial controls and outdoor electronics |
Applications
| USB Port ESD Protection | 3.3 V LDO Reference Stabilization |
|---|---|
Use Scenario: Protecting USB 2.0 data lines (D+, D–) and VBUS against electrostatic discharge events up to ±8 kV contact. IC Role / Device Role / Timing Role: Zener clamp limiting transient voltage to <5.5 V while maintaining signal integrity. Use Value: Three isolated elements allow independent clamping of VBUS, D+, and D– without cross-talk or shared-path impedance. | Use Scenario: Stabilizing feedback node of a 3.3 V low-dropout regulator in battery-powered IoT sensors. IC Role / Device Role / Timing Role: Precision shunt reference providing stable 3.9 V bias to error amplifier input. Use Value: Tight 3.7–4.1 V tolerance and low 3.0 µA leakage ensure minimal quiescent current impact and accurate output regulation. |
| Multi-Rail Power Sequencing Monitor | Industrial Sensor Signal Conditioning |
Use Scenario: Monitoring startup sequence of 1.8 V, 3.3 V, and 5 V rails in FPGA-based control systems. IC Role / Device Role / Timing Role: Independent Zener thresholds detect undervoltage faults per rail before system initialization. Use Value: Triple isolation prevents false triggering during staggered rail ramp-up; SOT-363 saves board space vs. discrete diodes. | Use Scenario: Biasing and protecting analog front-end inputs of 4–20 mA current-loop transmitters exposed to field wiring surges. IC Role / Device Role / Timing Role: Clamping amplifier input to ±5 V while supplying stable reference for offset calibration. Use Value: 200 mW rating handles repetitive surge energy; –65 °C to +150 °C range matches transmitter enclosure extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5227BS-7-F | Single-element 3.6 V Zener, SOT-363, 200 mW, 15 Ω ZZT | Lacks triple isolation; suitable only for single-rail use | Select when only one Zener function is needed and lower impedance is critical |
| BZX84C3V9LT1G | Single-element 3.9 V Zener, SOT-23, 350 mW, 90 Ω ZZT | Different package (SOT-23), higher power, no multi-element integration | Choose for higher power handling where board area permits separate devices |
Compared with MMBZ5227BS-7-F and BZX84C3V9LT1G, BZX84C3V9TS-7-F uniquely provides three isolated 3.9 V Zeners in one SOT-363 footprint-enabling compact multi-rail protection or reference without inter-element interaction or layout overhead.
Availability
BZX84C3V9TS-7-F is available at Aetrix Electronics and suitable for USB interface protection, multi-rail power sequencing, industrial sensor signal conditioning, and 3.3 V LDO reference stabilization requiring stable component supply and long-term manufacturability.
Supply support for BZX84C3V9TS-7-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, industry-standard components for power management, signal integrity, and protection.
This part belongs to the BZX84C series of triple Zener arrays designed specifically for space-constrained applications needing multiple independent voltage references or clamps in a single ultra-small package.
FAQ
What is the maximum continuous power dissipation for BZX84C3V9TS-7-F?
The device is rated for 200 mW total power dissipation at 25 °C ambient temperature when mounted on an FR4 PCB using the recommended pad layout. Derating begins above 25 °C at 0.32 mW/°C, reaching zero at 150 °C per the published power derating curve.
How are the three Zener elements isolated within the SOT-363 package?
All six terminals (A1/C1, A2/C2, A3/C3) are electrically isolated-no internal connection exists between any anode and cathode pair beyond their designated diode junction. This isolation is verified by >100 MΩ inter-element resistance at 100 V bias per Diodes Inc. characterization data.
Can BZX84C3V9TS-7-F be used in place of a single 3.9 V Zener diode?
Yes-any one of the three Zener elements (e.g., A1/C1) functions identically to a standalone 3.9 V Zener with identical electrical specs. Unused anode/cathode pairs must remain unconnected or tied to non-conflicting potentials to avoid unintended conduction paths.
Is the BZX84C3V9TS-7-F compatible with lead-free reflow profiles?
Yes-the device uses matte tin plating over Alloy 42 leadframe and meets J-STD-020D Level 1 moisture sensitivity, supporting standard Pb-free reflow profiles (peak 260 °C, 10-second dwell) without preconditioning or special handling.
BZX84C3V9TS-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Configuration:
- 3 Independent
- Voltage - Zener (Nom) (Vz):
- 3.9 V
- Tolerance:
- ±6%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
BZX84C3V9TS-7-F FAQ
1.How can I place an order for BZX84C3V9TS-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C3V9TS-7-F 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 BZX84C3V9TS-7-F reliable?
The price and inventory of BZX84C3V9TS-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C3V9TS-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C3V9TS-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C3V9TS-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C3V9TS-7-F?
BZX84C3V9TS-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C3V9TS-7-F 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 BZX84C3V9TS-7-F?
For technical support, including BZX84C3V9TS-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C3V9TS-7-F requirements.
6.How does Aetrix verify that BZX84C3V9TS-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C3V9TS-7-F 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 BZX84C3V9TS-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C3V9TS-7-F?
All BZX84C3V9TS-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C3V9TS-7-F, 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 BZX84C3V9TS-7-F part is unused and in its original packaging.
Return procedure for BZX84C3V9TS-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C3V9TS-7-F Tags
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Diodes Incorporated
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