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onsemi BZX84C5V1_S00Z
- Part No.:
- BZX84C5V1_S00Z
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C5V1_S00Z.pdf
- Description:
- DIODE ZENER 5.45V 550MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,850
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Product details
Overview
BZX84C5V1_S00Z from ON Semiconductor (formerly Fairchild) is a 5.1 V ±5% surface-mount Zener diode in SOT-23 package, rated for 250 mW power dissipation at 25°C ambient, with 60 Ω dynamic impedance at 5 mA test current and 2 µA maximum reverse leakage at 2.0 V. It provides precision voltage regulation in low-power biasing and reference circuits.
For engineers reviewing the BZX84C5V1_S00Z datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance, dynamic impedance at specified test current, thermal resistance (RJA = 465 °C/W), reverse leakage at VR = 2.0 V, and SOT-23 footprint compatibility with automated assembly.
Technical Context
The BZX84C5V1_S00Z operates as a silicon planar epitaxial Zener diode optimized for stable voltage reference and overvoltage protection in space-constrained designs. Its 5.1 V nominal breakdown voltage is specified with ±5% tolerance and exhibits a temperature coefficient of –2.7 mV/°C at 5 mA, indicating negative drift with rising temperature.
It is characterized under DC conditions with IZ = 1.0 mA, 5.0 mA, and 20 mA test points, delivering VZ = 4.2–5.3 V at 1 mA, 4.8–5.4 V at 5 mA, and 5.0–5.9 V at 20 mA - confirming tight regulation across operating current range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.8–5.4 V at IZ = 5 mA - defines stable regulation window for reference design |
| Tolerance | ±5% - ensures predictable voltage accuracy without post-production trimming |
| Dynamic Impedance (ZZ) | 60 Ω max at 5 mA - limits output voltage variation under load current changes |
| Reverse Leakage (IR) | 2 µA max at VR = 2.0 V - minimizes standby power loss in high-impedance bias networks |
| Power Dissipation (PD) | 250 mW at TA = 25°C - sets maximum continuous DC power handling on FR-4 PCB |
| Junction-to-Ambient RJA | 465 °C/W - determines thermal rise per watt; requires derating above 25°C ambient |
| Capacitance (CJ) | 225 pF at VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and transient response |
Pinout & Package
Package: SOT-23 (TO-236AB), 3-terminal plastic surface-mount package with standard cathode marking (band). Dimensions: 2.9 mm × 1.3 mm × 1.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower potential side in reverse-biased Zener operation |
| Cathode (Pin 2) | Zener breakdown terminal | Marked lead; connects to higher potential side to enable regulated voltage drop |
| NC / Dummy (Pin 3) | Non-connected internal tie | Internally unconnected; electrically isolated and must not be soldered to trace |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables use without external calibration in cost-sensitive voltage reference designs |
| Low dynamic impedance (60 Ω) | Reduces output voltage deviation under varying load currents in feedback networks |
| SOT-23 footprint | Supports high-density PCB layouts and compatibility with standard pick-and-place equipment |
| Negative tempco (–2.7 mV/°C) | Allows predictable compensation when paired with positive-tempco components |
| 250 mW power rating | Provides sufficient headroom for low-current biasing in analog sensor interfaces and LDO feedback paths |
Applications
| Industrial Sensor Biasing | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Providing stable 5.1 V reference for bridge sensor excitation in 24 V industrial transmitters. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage regulator to set excitation voltage independent of supply ripple. Use Value: Maintains <±1% excitation stability over –40°C to +85°C due to known tempco and low ZZ. | Use Scenario: Generating clean reset threshold for 3.3 V microcontrollers during brown-out conditions. IC Role / Device Role / Timing Role: Zener clamping element in RC-based reset generator to define precise trip voltage. Use Value: Enables deterministic reset assertion at 5.1 V ±5%, avoiding false triggers from supply noise. |
| USB Port Overvoltage Protection | LED Current Regulation |
Use Scenario: Clamping transient surges on 5 V USB VBUS lines in portable docking stations. IC Role / Device Role / Timing Role: Shunt protector limiting voltage to safe level before downstream USB controller ICs. Use Value: Responds within nanoseconds to ESD events while surviving 250 mW peak pulses per JEDEC standards. | Use Scenario: Setting constant current for indicator LEDs in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Zener-based current source where cathode drives LED anode via series resistor. Use Value: Delivers stable 5.1 V reference enabling ±3% LED brightness consistency across 2.8–4.2 V Li-ion input range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5221BS-7-F | Same 5.1 V nominal, ±5% tolerance, but 350 mW PD, 17 Ω ZZ at 20 mA | Higher power and lower ZZ support heavier load regulation, but tighter layout spacing required | Select when lower impedance and higher pulse power capability are needed |
| BZX84-C5V1,115 | Identical electrical specs and SOT-23 package; manufactured by Nexperia, RoHS-compliant, AEC-Q200 qualified | Qualified for automotive environments; suitable for under-hood temperature cycling and vibration | Select for automotive-grade reliability without circuit redesign |
Compared with MMBZ5221BS-7-F and BZX84-C5V1,115, the BZX84C5V1_S00Z offers proven industrial stability at lower cost, with trade-offs in pulse power margin and automotive qualification - making it optimal for commercial-grade embedded systems where thermal derating and board space are primary constraints.
Availability
BZX84C5V1_S00Z is available at Aetrix Electronics and suitable for industrial sensor biasing, microcontroller reset circuits, USB port overvoltage protection, and LED current regulation requiring stable component supply and consistent SOT-23 footprint availability.
Supply support for BZX84C5V1_S00Z 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
ON Semiconductor is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The BZX84 series belongs to ON Semiconductor's general-purpose Zener diode product line, designed specifically for compact, low-power voltage regulation and protection in consumer, computing, and industrial electronics.
FAQ
What is the nominal Zener voltage and tolerance of BZX84C5V1_S00Z?
The BZX84C5V1_S00Z has a nominal Zener voltage of 5.1 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 4.8 V and 5.4 V when tested at 5 mA. This specification is confirmed in the Fairchild/ON Semiconductor datasheet Rev. 1.10 and applies directly to the BZX84C5V1_S00Z device under standard 25°C ambient conditions.
What is the maximum power dissipation rating for BZX84C5V1_S00Z?
The BZX84C5V1_S00Z is rated for 250 mW power dissipation at TA = 25°C when mounted on a standard FR-4 PCB (76.2 mm × 114.3 mm). Derating is required above 25°C ambient, following the 465 °C/W junction-to-ambient thermal resistance. This value is explicitly listed in the Absolute Maximum Ratings table of the official BZX84C3V3–BZX84C33 datasheet.
Does BZX84C5V1_S00Z have a specified temperature coefficient?
Yes, the BZX84C5V1_S00Z has a temperature coefficient of –2.7 mV/°C at IZ = 5 mA, indicating its Zener voltage decreases linearly with increasing temperature. This value is documented in the Electrical Characteristics table under "DVZ / Dt at 5.0 mA" and is critical for precision reference designs where thermal drift must be modeled or compensated.
What is the reverse leakage current specification for BZX84C5V1_S00Z?
The BZX84C5V1_S00Z specifies a maximum reverse leakage current (IR) of 2 µA at VR = 2.0 V and TA = 25°C. This parameter is essential for low-power applications such as battery-operated sensor biasing, where excessive leakage could drain standby current. The value is confirmed in the datasheet's second Electrical Characteristics table.
Is BZX84C5V1_S00Z compatible with standard SOT-23 pick-and-place equipment?
Yes, the BZX84C5V1_S00Z uses the industry-standard SOT-23 (TO-236AB) package with 2.9 mm × 1.3 mm body dimensions and 0.95 mm pin pitch, fully compatible with automated surface-mount assembly processes. Its pinout - Anode (Pin 1), Cathode (Pin 2), and non-connected Pin 3 - aligns with JEDEC MO-203-AB mechanical specifications referenced in the ON Semiconductor packaging documentation.
BZX84C5V1_S00Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 5.45 V
- Tolerance:
- ±5%
- Power - Max:
- 550 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BZX84C5V1_S00Z FAQ
1.How can I place an order for BZX84C5V1_S00Z through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C5V1_S00Z 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 BZX84C5V1_S00Z reliable?
The price and inventory of BZX84C5V1_S00Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C5V1_S00Z is usually 5 days.
3.What payment methods are accepted for BZX84C5V1_S00Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C5V1_S00Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C5V1_S00Z?
BZX84C5V1_S00Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C5V1_S00Z 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 BZX84C5V1_S00Z?
For technical support, including BZX84C5V1_S00Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C5V1_S00Z requirements.
6.How does Aetrix verify that BZX84C5V1_S00Z is sourced from the original manufacturer or authorized distributors?
All BZX84C5V1_S00Z 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 BZX84C5V1_S00Z meets industry standards.
7.What is the process for return or replacement of BZX84C5V1_S00Z?
All BZX84C5V1_S00Z units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C5V1_S00Z, 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 BZX84C5V1_S00Z part is unused and in its original packaging.
Return procedure for BZX84C5V1_S00Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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