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Nexperia USA Inc. BZT52-C3V0X
- Part No.:
- BZT52-C3V0X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52-C3V0X.pdf
- Description:
- DIODE ZENER 3V 350MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:495
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Product details
Overview
BZT52-C3V0X from Nexperia is a ±5 % tolerance Zener diode in SOD123 package, rated for 3.0 V nominal Zener voltage at 5 mA, with 500 Ω max differential resistance and 10 μA reverse current at 2.8 V, used for low-power voltage regulation and reference in consumer and industrial power rails.
For engineers reviewing the BZT52-C3V0X datasheet, BZT52-C3V0X pinout, BZT52-C3V0X application, or BZT52-C3V0X equivalent, this page delivers verified Zener parameters, thermal performance, SOD123 mounting details, and direct alternatives for precision biasing and overvoltage clamping designs.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load and temperature conditions. Its 3.0 V nominal Zener voltage is specified at IZ = 5 mA, with a temperature coefficient of −3.5 to 0.0 mV/K and low differential resistance enabling tight regulation in low-current applications.
The device uses planar epitaxial construction for consistent breakdown characteristics and low leakage. It is optimized for surface-mount use on FR4 PCBs with single-sided copper, supporting both regulation and transient suppression roles where compact size and predictable knee behavior are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.0 V nominal at IZ = 5 mA; actual range 2.8–3.2 V defines usable regulation window for 3.3 V rail referencing |
| Differential Resistance (rdif) | ≤ 500 Ω at IZ = 5 mA; limits output voltage variation under load changes up to ±1 mA |
| Reverse Current (IR) | ≤ 10 μA at VR = 2.8 V; ensures minimal quiescent power loss in standby regulation circuits |
| Forward Voltage (VF) | ≤ 0.9 V at IF = 10 mA; enables use as polarity-sensitive clamp or protection diode in dual-role layouts |
| Total Power Dissipation (Ptot) | 590 mW at Tamb ≤ 25 °C on 1 cm² cathode pad; sets maximum continuous Zener current to ~197 mA at 3.0 V |
| Junction Temperature (Tj) | −55 °C to +150 °C operating range; supports industrial ambient environments without derating below 125 °C |
Pinout & Package
SOD123 plastic surface-mount package: 2-terminal, flat lead, 2.80 mm × 1.70 mm footprint, 1.3 mm height, cathode marked by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking band identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction during regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective selection for non-critical 3.0 V references without trimming or feedback |
| Low differential resistance (≤500 Ω) | Maintains <±15 mV output shift per ±1 mA load change-suitable for sensor bias and microcontroller reset circuits |
| SOD123 package compatibility | Standardized footprint supports automated placement and reflow soldering on high-density PCBs |
| 150 °C max junction temperature | Allows operation in enclosed enclosures or near heat sources without thermal shutdown risk |
| Non-repetitive peak reverse power (40 W) | Withstands short-duration transients (100 μs) up to 40 W-enhances robustness in ESD-prone interfaces |
Applications
| Microcontroller Reset Circuit | Low-Voltage Sensor Biasing |
|---|---|
Use Scenario: Providing stable 3.0 V reference to reset IC input during brown-out conditions. IC Role / Device Role / Timing Role: Zener diode acts as precision voltage threshold detector in conjunction with RC timing network. Use Value: Ensures reliable reset assertion down to 2.8 V supply while consuming <10 μA standby current. |
Use Scenario: Supplying bias voltage to analog front-end of temperature/humidity sensors. IC Role / Device Role / Timing Role: Functions as passive voltage reference for ratiometric ADC excitation. Use Value: Delivers stable 3.0 V ±0.2 V over −40 °C to +85 °C, minimizing sensor gain drift. |
| USB Port Overvoltage Clamp | Industrial I/O Signal Level Shifting |
Use Scenario: Protecting 3.3 V USB data lines from accidental 5 V insertion or ESD events. IC Role / Device Role / Timing Role: Reverse-connected Zener clamps line voltage to 3.0 V + VF (~3.9 V), diverting surge current. Use Value: Limits transient overshoot within USB 2.0 eye diagram mask using only one discrete component. |
Use Scenario: Translating 24 V PLC output signals to 3.3 V logic levels for microcontroller input. IC Role / Device Role / Timing Role: Forms voltage divider top element with series resistor, referenced to 3.0 V Zener. Use Value: Enables robust level shifting with <1 % error and immunity to supply ripple due to low rdif. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5223BLT1G | Same 3.0 V nominal, ±5 %, but SOT-23 package; higher rdif (700 Ω max) and lower Ptot (350 mW) | Less suitable for >100 mA continuous regulation; better for ultra-low-profile layouts | Select when board space is constrained and thermal margin exceeds 100 °C/W |
| Vishay BZX84-C3V0 | Same 3.0 V/±5 %, SOT-23, but tighter IR spec (≤5 μA at 2.8 V); 350 mW Ptot, 200 °C/W Rth(j-a) | Lower leakage benefits battery-powered always-on sensors; reduced power handling limits sustained current | Prefer for low-IQ portable designs where 50 mA max Zener current suffices |
Compared with BZT52-C3V0X, MMBZ5223BLT1G trades thermal capability for smaller footprint, while BZX84-C3V0 prioritizes leakage reduction over power density-making the Nexperia part optimal for balanced industrial regulation where 590 mW dissipation and 500 Ω rdif are decisive.
Availability
BZT52-C3V0X is available at Aetrix Electronics and suitable for microcontroller reset circuits, sensor biasing networks, USB port protection, and industrial I/O level-shifting requiring stable component supply and long-term obsolescence management.
Supply support for BZT52-C3V0X 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 focused on high-volume, high-reliability discrete and logic devices, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.
The BZT52 series targets cost-sensitive, space-constrained applications needing dependable Zener regulation-designed for broad-voltage coverage (2.4–75 V), tight tolerances, and robust SMD manufacturability.
FAQ
What is the maximum continuous Zener current for BZT52-C3V0X at 25 °C ambient?
At Tamb = 25 °C with 1 cm² cathode pad, Ptot = 590 mW limits IZ to 197 mA (590 mW ÷ 3.0 V). Derating begins above 25 °C per Rth(j-a) = 210 K/W; at 70 °C ambient, max IZ drops to ~130 mA.
How does the temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
With SZ = −3.5 to 0.0 mV/K at IZ = 5 mA, VZ shifts −105 mV to 0 mV across 30 K ΔT, yielding −3.5 % to 0 % deviation from 3.0 V nominal. This is acceptable for non-precision references but requires compensation in metrology-grade circuits.
Can BZT52-C3V0X be used in place of a 3.3 V Zener for 3.3 V rail monitoring?
No-it is rated 3.0 V nominal (2.8–3.2 V range) and will not reliably assert at 3.3 V. For 3.3 V monitoring, use BZT52-C3V3 (3.3 V nominal, 3.1–3.5 V range) which provides correct threshold alignment with standard 3.3 V logic rails.
Is the SOD123 footprint compatible with automated optical inspection (AOI) systems?
Yes-the standardized SOD123 outline (JEDEC DO-213AA), visible cathode band, and 0.7 mm lead pitch enable reliable AOI detection of placement angle, solder joint integrity, and polarity verification in high-speed SMT lines.
BZT52-C3V0X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3 V
- Tolerance:
- ±6.7%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52-C3V0X FAQ
1.How can I place an order for BZT52-C3V0X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52-C3V0X 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 BZT52-C3V0X reliable?
The price and inventory of BZT52-C3V0X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52-C3V0X is usually 5 days.
3.What payment methods are accepted for BZT52-C3V0X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52-C3V0X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52-C3V0X?
BZT52-C3V0X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52-C3V0X 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 BZT52-C3V0X?
For technical support, including BZT52-C3V0X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52-C3V0X requirements.
6.How does Aetrix verify that BZT52-C3V0X is sourced from the original manufacturer or authorized distributors?
All BZT52-C3V0X 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 BZT52-C3V0X meets industry standards.
7.What is the process for return or replacement of BZT52-C3V0X?
All BZT52-C3V0X units undergo pre-shipment inspection (PSI). If there is an issue with BZT52-C3V0X, 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 BZT52-C3V0X part is unused and in its original packaging.
Return procedure for BZT52-C3V0X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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