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onsemi BZX84C5V6LT3
- Part No.:
- BZX84C5V6LT3
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C5V6LT3.pdf
- Description:
- DIODE ZENER 5.6V 225MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,915
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Product details
Overview
BZX84C5V6LT3 from onsemi is a 5.6 V, ±5% tolerance Zener diode in SOT-23 package, rated for 225 mW power dissipation at 25°C on FR-5 board, with 40 Ω dynamic impedance at 5 mA test current and 1 µA reverse leakage at 3 V. It provides precision voltage regulation in space-constrained portable electronics such as smartphone power rails and battery monitoring circuits.
For engineers reviewing the BZX84C5V6LT3 datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage (5.6 V), tolerance (±5%), thermal resistance (556 °C/W), temperature coefficient (−2.0 mV/°C), and ESD rating (>16 kV HBM).
Technical Context
This device operates as a two-terminal shunt voltage regulator, conducting in reverse breakdown to clamp voltage across load. Its Zener voltage is specified at three test currents (1 mA, 5 mA, 20 mA), with tight consistency: 4.8–6.0 V at 5 mA, 4.8–6.3 V at 20 mA, and 5.2–6.0 V at 1 mA.
The SOT-23 package features pin 1 (anode), pin 2 (no connection), and pin 3 (cathode), with cathode polarity marked by a band. Thermal performance is defined for FR-5 (225 mW) and alumina (300 mW) substrates, with derating above 25°C at 1.8 mW/°C and 2.4 mW/°C respectively.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 5.6 V nominal, min 5.2 V / max 6.0 V @ 5 mA - defines regulated output voltage under standard bias |
| Tolerance | ±5% - ensures predictable clamping accuracy across production lots |
| Power Dissipation | 225 mW @ 25°C on FR-5 board - sets maximum continuous power handling in standard PCB conditions |
| Zener Impedance | 40 Ω @ 5 mA - determines regulation stiffness and AC ripple rejection capability |
| Reverse Leakage | 1 µA @ 3 V - defines off-state current draw in low-power standby modes |
| Temp Coefficient | −2.0 mV/°C @ 5 mA - quantifies voltage drift over operating temperature range (−65°C to +150°C) |
| Capacitance | 200 pF @ 0 V, 1 MHz - impacts high-frequency noise filtering and signal integrity in RF-adjacent layouts |
Pinout & Package
SOT-23 (Case 318, Style 8) surface-mount plastic package with void-free thermosetting epoxy, UL 94 V-0 flammability rating, and corrosion-resistant solderable finish. Maximum soldering temperature: 260°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential side of regulated node; reverse-biased during regulation |
| 2 | No Connection | Internally unconnected; must remain floating - no PCB trace or pad required |
| 3 | Cathode | Connected to higher-potential side (e.g., supply rail); polarity band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Pb-Free Option Available | RoHS-compliant packaging (G suffix variant) supports environmentally regulated manufacturing |
| ESD Robustness | Class 3 HBM rating (>16 kV) enables reliable handling and assembly without special ESD controls |
| High-Density Mounting | Small footprint (2.80 × 1.20 × 0.99 mm) allows placement in tight spaces on mobile PCBs |
| Automated Assembly Optimized | Transfer-molded case geometry and lead coplanarity support high-yield pick-and-place and reflow |
Applications
| Battery Voltage Monitoring | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage in handheld devices to prevent overcharge or deep discharge. IC Role / Device Role / Timing Role: Shunt reference element providing stable 5.6 V threshold for comparator input. Use Value: Enables accurate 4.2 V full-charge detection using resistor divider scaling, with <±2% total error budget. | Use Scenario: Clamping transient surges on USB VBUS line during hot-plug events or ESD strikes. IC Role / Device Role / Timing Role: Fast-acting crowbar device diverting excess energy to ground before downstream IC damage. Use Value: Limits peak voltage to ≤6.3 V (max VZ at 20 mA), protecting 5.5 V tolerant USB transceivers. |
| Low-Power Sensor Biasing | Microcontroller Reset Circuit |
Use Scenario: Providing stable bias voltage for analog sensor front-ends in always-on IoT nodes. IC Role / Device Role / Timing Role: Low-quiescent-current voltage reference sourcing <1 µA leakage at 3 V. Use Value: Delivers 5.6 V reference with <0.5% drift over −40°C to +85°C, enabling sub-1% sensor accuracy. | Use Scenario: Generating clean reset pulse for MCU startup when main supply crosses 5.6 V threshold. IC Role / Device Role / Timing Role: Precision threshold detector in RC-based power-on reset (POR) network. Use Value: Ensures deterministic reset assertion at 5.6 V ±0.3 V, eliminating brown-out glitches during supply ramp. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C5V6LT1 | Identical electrical specs; differs only in tape-and-reel packaging (3,000 vs. 10,000 units per reel) | Same functional use; suited for lower-volume prototyping or small-batch production | Select when smaller reel size aligns with consumption rate or inventory policy |
| BZX84B5V6LT1 | Tighter ±1% tolerance (vs. ±5%), same 5.6 V nominal, 40 Ω ZZT, and −2.0 mV/°C TC | Required where absolute voltage accuracy is critical (e.g., precision ADC references) | Choose when system-level calibration is impractical and tighter initial tolerance is mandatory |
Compared with BZX84C5V6LT3, the LT1 variant offers identical performance in smaller reels for flexibility, while the B-series variant trades wider tolerance for higher accuracy-neither is pin-compatible with other packages, but both share the same SOT-23 footprint and pinout.
Availability
BZX84C5V6LT3 is available at Aetrix Electronics and suitable for battery management systems, USB interface protection, low-power sensor biasing, and microcontroller reset circuits requiring stable component supply and long-term obsolescence planning.
Supply support for BZX84C5V6LT3 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 delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The BZX84 series is designed specifically for compact, cost-sensitive voltage regulation in portable and high-density electronics, emphasizing small size, robust ESD immunity, and broad Zener voltage coverage (2.4 V to 75 V).
FAQ
What is the exact Zener voltage tolerance for BZX84C5V6LT3?
The BZX84C5V6LT3 has a nominal Zener voltage of 5.6 V with a tolerance of ±5%, meaning the actual measured voltage at 5 mA test current falls between 5.2 V and 6.0 V. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the official datasheet, under the BZX84CxxxLT1 series column for device marking Z3.
Does BZX84C5V6LT3 have a functional pin 2 connection?
No, pin 2 of the BZX84C5V6LT3 is internally not connected (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 pin 2 as unattached.
What is the maximum power dissipation of BZX84C5V6LT3 on an FR-5 board?
The BZX84C5V6LT3 is rated for 225 mW total power dissipation on an FR-5 board at 25°C ambient temperature. Above 25°C, it must be derated linearly at 1.8 mW/°C, resulting in zero dissipation capability at approximately 153°C ambient - a value derived directly from the PD and RJA specifications in the Maximum Ratings table.
How does the temperature coefficient of BZX84C5V6LT3 affect its regulation stability?
The BZX84C5V6LT3 has a temperature coefficient of −2.0 mV/°C at 5 mA, meaning its Zener voltage decreases by 2 mV for every 1°C rise in junction temperature. Over the full −65°C to +150°C range, this results in a total shift of up to ±350 mV - a critical factor when designing for wide-temperature operation, and confirmed in the Electrical Characteristics table and Figure 1 of the datasheet.
Is BZX84C5V6LT3 RoHS compliant and lead-free?
The standard BZX84C5V6LT3 is not inherently Pb-free; however, the Pb-free variant is designated BZX84C5V6LT3G (with 'G' suffix), which shares identical electrical and thermal specifications. Both versions meet RoHS requirements, with the G variant explicitly certified per the manufacturer's Pb-Free Packaging documentation referenced in the datasheet.
BZX84C5V6LT3 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):
- 5.6 V
- Tolerance:
- ±7%
- Power - Max:
- 225 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 2 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)
BZX84C5V6LT3 FAQ
1.How can I place an order for BZX84C5V6LT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C5V6LT3 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 BZX84C5V6LT3 reliable?
The price and inventory of BZX84C5V6LT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C5V6LT3 is usually 5 days.
3.What payment methods are accepted for BZX84C5V6LT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C5V6LT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C5V6LT3?
BZX84C5V6LT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C5V6LT3 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 BZX84C5V6LT3?
For technical support, including BZX84C5V6LT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C5V6LT3 requirements.
6.How does Aetrix verify that BZX84C5V6LT3 is sourced from the original manufacturer or authorized distributors?
All BZX84C5V6LT3 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 BZX84C5V6LT3 meets industry standards.
7.What is the process for return or replacement of BZX84C5V6LT3?
All BZX84C5V6LT3 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C5V6LT3, 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 BZX84C5V6LT3 part is unused and in its original packaging.
Return procedure for BZX84C5V6LT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C5V6LT3 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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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
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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