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Nexperia USA Inc. BZT52-C4V7X
- Part No.:
- BZT52-C4V7X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52-C4V7X.pdf
- Description:
- DIODE ZENER 4.7V 350MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:5,171
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Product details
Overview
BZT52-C4V7X from Nexperia is a ±5 % tolerance Zener diode in SOD123 package, rated for 4.7 V nominal regulation at 5 mA, with 500 Ω max differential resistance and 3 μA reverse current at 3.7 V, used for low-power voltage reference and overvoltage clamping in consumer power rails.
For engineers reviewing the BZT52-C4V7X datasheet, BZT52-C4V7X pinout, BZT52-C4V7X application, or BZT52-C4V7X equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (210 K/W junction-to-solder-point), forward voltage ≤0.9 V at 10 mA, 590 mW total power dissipation, and SOD123 footprint compatibility with automated SMT assembly.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable 4.7 V output across load and line variations, with temperature coefficient of −3.5 to +0.2 mV/K at 5 mA, enabling predictable drift behavior in ambient ranges from −55 °C to +150 °C.
Its low 500 Ω differential resistance ensures minimal voltage deviation under dynamic current changes up to 250 mA forward/peak reverse surge, while 300 pF capacitance at 0 V supports high-frequency noise suppression without signal integrity compromise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 4.4 V to 5.0 V at IZ = 5 mA - defines regulation band for precision biasing |
| Differential Resistance rdif | ≤ 500 Ω - limits output voltage shift under ±1 mA load variation |
| Reverse Current IR | ≤ 3 μA at VR = 3.7 V - ensures low standby leakage in always-on circuits |
| Forward Voltage VF | ≤ 0.9 V at IF = 10 mA - enables efficient anode-cathode conduction during transient clamping |
| Total Power Dissipation Ptot | 590 mW at Tamb ≤ 25 °C - sets maximum continuous DC power in standard FR4 layout |
| Junction-to-Solder-Point Rth(j-sp) | 210 K/W - determines thermal rise above PCB copper pad during sustained operation |
| Non-repetitive Peak Reverse Power | 40 W at tp = 100 μs - supports ESD/surge protection in IEC 61000-4-2 compliant designs |
Pinout & Package
SOD123 surface-mount plastic package: 2.80 mm × 1.70 mm body, 0.70 mm lead pitch, cathode marked by molded band; optimized for reflow soldering on 0.91 mm × 2.36 mm Cu pads with solder mask defined.
| 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; completes reverse-bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective regulation where tight voltage accuracy is not required, e.g., non-critical supply monitoring |
| Low 500 Ω differential resistance | Maintains <±5 mV output shift across 1 mA load steps, improving stability in feedback-sensing paths |
| 300 pF junction capacitance | Provides effective high-frequency bypass below 10 MHz without destabilizing adjacent analog stages |
| 210 K/W junction-to-solder-point thermal resistance | Allows 115 °C junction rise at 590 mW in standard FR4 layout, supporting reliable operation without heatsinking |
| Non-repetitive 40 W peak power rating | Clamps 8 kV ESD transients per IEC 61000-4-2 Level 4 when placed at board edge interfaces |
Applications
| USB Port Overvoltage Protection | Microcontroller Reset Circuit Reference |
|---|---|
Use Scenario: Clamping 5 V USB VBUS against surges exceeding 5.5 V during hot-plug events. IC Role / Device Role / Timing Role: Zener acts as shunt regulator, diverting excess current to ground before upstream LDO or USB controller is damaged. Use Value: 4.7 V breakdown ensures safe margin below 5.5 V absolute maximum rating while allowing full 5 V operation during normal use. |
Use Scenario: Generating precise 4.7 V threshold for RC-based reset timing in 3.3 V microcontrollers. IC Role / Device Role / Timing Role: Provides stable reference voltage to comparator input, triggering reset until supply reaches operational level. Use Value: ±5 % tolerance and low 3 μA leakage ensure consistent reset release point across temperature and unit-to-unit variation. |
| Low-Power Sensor Biasing | Industrial Signal Conditioning Clamp |
Use Scenario: Supplying regulated 4.7 V bias to analog sensor ICs in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Functions as passive voltage reference, replacing active regulators to minimize quiescent current. Use Value: 590 mW power limit and 0.9 V forward drop enable direct connection to 5 V sources with no series resistor needed. |
Use Scenario: Limiting 0–10 V analog input signals to prevent ADC saturation in PLC modules. IC Role / Device Role / Timing Role: Placed between signal line and ground to clip excursions >4.7 V, protecting downstream op-amps and converters. Use Value: 500 Ω rdif ensures clamping voltage stays within 50 mV of 4.7 V even at 10 mA fault current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52-B4V7 | ±2 % tolerance, 78 Ω max rdif, 2 μA IR at 3.7 V | Higher precision and lower impedance, suited for feedback loops requiring tighter regulation | Select when voltage accuracy <±2 % or dynamic load stability is critical; requires same SOD123 footprint |
| MMBZ5225BLT1G | ±5 % tolerance, 22 Ω rdif, 100 nA IR at 3 V, SOT-23 package | Lower leakage and smaller size, but higher thermal resistance (350 K/W) limits power handling | Prefer for space-constrained designs with light loads; avoid in >150 mW continuous applications due to thermal derating |
Compared with BZT52-C4V7X, BZT52-B4V7 offers tighter regulation at higher cost, while MMBZ5225BLT1G trades package size and leakage for reduced thermal performance-selection depends on whether precision, leakage, or power density dominates the design priority.
Availability
BZT52-C4V7X is available at Aetrix Electronics and suitable for USB interface protection, microcontroller reset circuits, low-power sensor biasing, and industrial analog signal clamping requiring stable component supply and long-term obsolescence management.
Supply support for BZT52-C4V7X 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 delivering high-performance logic, discrete, and MOSFET devices with focus on efficiency, reliability, and miniaturization for mass-market electronics.
The BZT52 series targets cost-sensitive, high-volume applications requiring robust Zener regulation in compact SMD packages-designed specifically for consumer, computing, and industrial power management subsystems.
FAQ
What is the maximum continuous power dissipation for BZT52-C4V7X at 70 °C ambient?
At 70 °C ambient, derated power is 354 mW, calculated using the 590 mW rating at 25 °C and thermal resistance of 210 K/W: Pderated = 590 mW × (1 − (70 − 25)/150) = 354 mW. This assumes standard FR4 mounting with 1 cm² cathode pad per datasheet condition [3].
Can BZT52-C4V7X be used in place of a 5.1 V Zener for overvoltage protection?
No-its 4.4–5.0 V range at 5 mA is below typical 5.1 V Zener tolerance bands (4.85–5.35 V). Substituting it risks premature clamping and false triggering in 5 V systems; use BZT52-C5V1 instead for nominal 5.1 V regulation.
Is the cathode marking band electrically connected to the cathode terminal?
Yes-the molded band on the SOD123 body directly corresponds to Pin 1 (cathode), verified in Table 2 pinning diagram and Figure 11 package outline. This alignment is critical for correct PCB silkscreen and placement orientation.
Does BZT52-C4V7X meet automotive qualification requirements?
No-it is explicitly designated as non-automotive qualified per Revision History section 13, which states C-series parts changed to non-automotive status in Rev. 2. For automotive use, Nexperia recommends Q-grade alternatives such as BZT52-C4V7-Q.
BZT52-C4V7X 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):
- 4.7 V
- Tolerance:
- ±6.4%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 78 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 2 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-C4V7X FAQ
1.How can I place an order for BZT52-C4V7X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52-C4V7X 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-C4V7X reliable?
The price and inventory of BZT52-C4V7X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52-C4V7X is usually 5 days.
3.What payment methods are accepted for BZT52-C4V7X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52-C4V7X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52-C4V7X?
BZT52-C4V7X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52-C4V7X 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-C4V7X?
For technical support, including BZT52-C4V7X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52-C4V7X requirements.
6.How does Aetrix verify that BZT52-C4V7X is sourced from the original manufacturer or authorized distributors?
All BZT52-C4V7X 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-C4V7X meets industry standards.
7.What is the process for return or replacement of BZT52-C4V7X?
All BZT52-C4V7X units undergo pre-shipment inspection (PSI). If there is an issue with BZT52-C4V7X, 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-C4V7X part is unused and in its original packaging.
Return procedure for BZT52-C4V7X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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