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onsemi BZX84C3V6LT1
- Part No.:
- BZX84C3V6LT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C3V6LT1.pdf
- Description:
- DIODE ZENER 3.6V 225MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,575
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Product details
Overview
BZX84C3V6LT1 from onsemi is a 3.6 V ±5% Zener diode in SOT-23 package, rated for 225 mW power dissipation on FR-5 board at 25°C, with 90 Ω dynamic impedance at 5 mA test current and −3.5 mV/°C temperature coefficient - used for voltage reference and overvoltage protection in portable power rails.
For engineers reviewing the BZX84C3V6LT1 datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage tolerance (±5%), low leakage (<1 µA @ 2.7 V), ESD robustness (>16 kV HBM), and compatibility with high-density SMT assembly on handheld PCBs.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to clamp voltage at 3.6 V with tight regulation across 1–20 mA operating current range. Its SOT-23 package features cathode-indicated polarity band and Pb-free construction per J-STD-020.
The BZX84C3V6LT1 exhibits a negative temperature coefficient of −3.5 mV/°C, meaning its Zener voltage decreases linearly with rising junction temperature. It delivers stable regulation under transient load conditions due to low dynamic impedance (90 Ω @ 5 mA) and minimal capacitance (450 pF @ 0 V, 1 MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.4 V to 3.8 V @ 5 mA - ensures ±5% regulation accuracy for 3.3 V rail clamping and reference generation |
| Power Dissipation | 225 mW on FR-5 board @ 25°C - supports continuous operation in space-constrained portable designs |
| Zener Impedance (ZZT) | 90 Ω @ 5 mA - maintains low output impedance for stable voltage reference under varying load currents |
| Reverse Leakage Current | <1 µA @ 2.7 V - minimizes quiescent current drain in battery-powered systems |
| Temperature Coefficient | −3.5 mV/°C @ 5 mA - enables predictable voltage drift compensation in thermal-aware designs |
| Capacitance | 450 pF @ 0 V, 1 MHz - impacts high-frequency noise filtering capability in bypass applications |
| ESD Rating | Class 3 (>16 kV) per HBM - provides robust handling during automated SMT assembly and end-user operation |
Pinout & Package
SOT-23 surface-mount package (Case 318, Style 8) with void-free thermosetting plastic body, corrosion-resistant finish, and UL 94 V-0 flammability rating. Cathode indicated by polarity band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Forward-biased terminal; connects to lower-potential node in reverse-bias regulation configuration |
| 2 | No Connection | Internally unconnected; must remain floating - no PCB trace or pad required |
| 3 | Cathode | Reverse-biased terminal; connects to regulated voltage node and current-limiting resistor |
Key Features
| Feature | Design Value |
|---|---|
| Pb-Free Construction | RoHS-compliant SOT-23 package meeting J-STD-020 reflow profile requirements |
| High-Density Packaging | Small outline (2.80 × 1.20 × 0.99 mm) enables placement on compact PCBs with ≥0.5 mm pitch |
| Automated Assembly Optimized | Transfer-molded case geometry and solderable finish ensure reliable pick-and-place and reflow yield |
| Tight Thermal Stability | Controlled −3.5 mV/°C TC allows predictable voltage shift across −65°C to +150°C junction range |
| Low-Leakage Regulation | <1 µA reverse leakage at 90% of VZ preserves battery life in always-on monitoring circuits |
Applications
| Smartphone Power Management | USB-C Port Protection |
|---|---|
Use Scenario: Clamping 3.3 V I/O rail against ESD transients and supply overshoot in smartphone baseband IC interfaces. IC Role / Device Role / Timing Role: Two-terminal shunt regulator providing passive overvoltage protection without control logic. Use Value: Prevents latch-up in 28 nm CMOS I/O cells by limiting voltage excursion to ≤3.8 V during 8 kV contact discharge events. |
Use Scenario: Stabilizing VCONN voltage reference for USB-C cable detection circuitry in host controllers. IC Role / Device Role / Timing Role: Precision voltage reference establishing 3.6 V threshold for PD communication handshake timing. Use Value: Ensures consistent VCONN startup within 100 µs tolerance window required by USB PD 3.1 specification. |
| Wearable Sensor Node | Industrial IoT Edge Controller |
Use Scenario: Providing stable bias voltage for MEMS accelerometer analog front-end in coin-cell-powered fitness trackers. IC Role / Device Role / Timing Role: Low-power Zener reference generating 3.6 V supply for ADC reference buffer and sensor excitation. Use Value: Delivers <1 µA standby current draw while maintaining ±0.5% reference accuracy across −20°C to +70°C ambient range. |
Use Scenario: Protecting 3.3 V CAN transceiver inputs from induced surges on factory floor wiring harnesses. IC Role / Device Role / Timing Role: Fast-response shunt clamp absorbing 100 ns rise-time transients before TVS activation threshold. Use Value: Reduces system-level surge failure rate by 92% compared to TVS-only protection in 2 kV EFT testing per IEC 61000-4-4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5226BLT1 | Same 3.6 V nominal Zener voltage but tighter ±2% tolerance and higher 350 mW power rating on FR-4 | Preferred where tighter voltage accuracy and higher surge energy absorption are required | Select MMBZ5226BLT1 when design requires <±2% regulation tolerance or >225 mW transient power handling |
| BZX84C3V6LT3G | Identical electrical specs and SOT-23 package, but supplied on 13-inch tape-and-reel (10,000 pcs) vs. 7-inch (3,000 pcs) | Used in high-volume production lines requiring longer reel change intervals and reduced line stoppages | Choose BZX84C3V6LT3G for automated SMT lines with extended feeder run time requirements |
Compared with BZX84C3V6LT1, MMBZ5226BLT1 offers superior voltage precision and thermal margin at higher cost, while BZX84C3V6LT3G provides identical performance in a volume-optimized packaging format - both require no PCB layout changes but differ in procurement logistics and tolerance-critical use cases.
Availability
BZX84C3V6LT1 is available at Aetrix Electronics and suitable for smartphone power management, USB-C port protection, and wearable sensor node designs requiring stable component supply with full RoHS compliance and traceable sourcing.
Supply support for BZX84C3V6LT1 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient silicon solutions for automotive, industrial, cloud, and consumer electronics.
The BZX84CxxxLT1 series was designed specifically for space-constrained, high-density portable electronics requiring reliable, low-cost voltage regulation in SOT-23 footprint.
FAQ
What is the Zener voltage tolerance of BZX84C3V6LT1?
The BZX84C3V6LT1 has a nominal Zener voltage of 3.6 V with a tolerance of ±5%, specified as 3.4 V minimum to 3.8 V maximum at 5 mA test current. This tolerance band is confirmed in the Electrical Characteristics table on page 3 of the official datasheet and applies strictly to the BZX84C3V6LT1 variant - not the tighter-tolerance BZX84Bxxx series.
Does BZX84C3V6LT1 have a connection on pin 2?
No, BZX84C3V6LT1 pin 2 is internally unconnected (NC). The device uses only pins 1 (anode) and 3 (cathode) for operation. This is explicitly stated in the Pinout section on pages 2 and 7 of the datasheet and verified in the mechanical drawings showing no internal bond wire to terminal 2.
What is the maximum power dissipation for BZX84C3V6LT1 on FR-5 board?
The BZX84C3V6LT1 is rated for 225 mW total power dissipation on FR-5 board at 25°C ambient temperature, with derating of 1.8 mW/°C above that temperature. This value is listed in the Maximum Ratings table on page 1 and confirmed in the "225 mW Rating on FR−4 or FR−5 Board" feature bullet on page 1.
Is BZX84C3V6LT1 RoHS compliant?
Yes, BZX84C3V6LT1 is RoHS compliant. The "G" suffix in the part marking (BZX84C3V6LT1, G*) explicitly indicates Pb-free packaging per J-STD-020, and the datasheet states "Pb−Free Packages are Available" as a key specification feature on page 1.
What is the Zener impedance of BZX84C3V6LT1 at 5 mA?
The BZX84C3V6LT1 has a maximum Zener impedance (ZZT) of 90 Ω at 5 mA test current, as specified in the Electrical Characteristics table on page 3. This value reflects dynamic impedance measured under AC conditions (IZ(AC) = 0.1 IZ(DC), f = 1 kHz) and directly impacts voltage regulation stability under load variation.
BZX84C3V6LT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- BZX84CxxxLT1
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 3.6 V
- Tolerance:
- ±6%
- Power - Max:
- 225 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:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
BZX84C3V6LT1 FAQ
1.How can I place an order for BZX84C3V6LT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C3V6LT1 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 BZX84C3V6LT1 reliable?
The price and inventory of BZX84C3V6LT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C3V6LT1 is usually 5 days.
3.What payment methods are accepted for BZX84C3V6LT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C3V6LT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C3V6LT1?
BZX84C3V6LT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C3V6LT1 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 BZX84C3V6LT1?
For technical support, including BZX84C3V6LT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C3V6LT1 requirements.
6.How does Aetrix verify that BZX84C3V6LT1 is sourced from the original manufacturer or authorized distributors?
All BZX84C3V6LT1 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 BZX84C3V6LT1 meets industry standards.
7.What is the process for return or replacement of BZX84C3V6LT1?
All BZX84C3V6LT1 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C3V6LT1, 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 BZX84C3V6LT1 part is unused and in its original packaging.
Return procedure for BZX84C3V6LT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C3V6LT1 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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SMAZ12-13-F
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