My Inquiry
My Account
Taiwan Semiconductor Corporation BZT52C4V7-G
- Part No.:
- BZT52C4V7-G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C4V7-G.pdf
- Description:
- DIODE ZENER 4.7V 350MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:9,553
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZT52C4V7-G from Taiwan Semiconductor is a surface-mount 4.7 V Zener diode with ±5% voltage tolerance, 350 mW power dissipation, and SOD-123 package. It provides precise voltage regulation in low-power circuits such as voltage reference, overvoltage protection, and signal clamping in consumer and industrial power supplies.
For engineers reviewing the BZT52C4V7-G datasheet, BZT52C4V7-G pinout, BZT52C4V7-G application, or BZT52C4V7-G equivalent, key selection criteria include nominal Zener voltage (4.7 V), test current (5 mA), dynamic impedance (80 Ω at IZT), leakage current (3 µA at 2.0 V), and thermal resistance (357 °C/W).
Technical Context
The BZT52C4V7-G operates as a single-die, cathode-banded Zener diode optimized for stable reverse-breakdown regulation at 4.7 V under 5 mA test current. Its 80 Ω dynamic impedance at IZT and 500 Ω maximum knee impedance ensure predictable clamping behavior across temperature.
Designed for ambient operation from –55 °C to +150 °C, it features a junction-to-ambient thermal resistance of 357 °C/W and meets JESD201 Class 1A whisker resistance. Polarity is marked by a visible cathode band on the SOD-123 body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.4 V min / 4.7 V nom / 5.0 V max - defines regulation window for precision biasing and reference stability |
| Power Dissipation (PD) | 350 mW - sets maximum continuous DC power handling without derating at 25 °C ambient |
| Zener Impedance (ZZT) | 80 Ω at 5 mA - determines output voltage variation under load transients in shunt regulator designs |
| Leakage Current (IR) | 3 µA at 2.0 V - ensures minimal standby current draw in battery-powered voltage monitor circuits |
| Junction Temperature (TJ) | –55 °C to +150 °C - supports operation in automotive under-hood and industrial control environments |
| Forward Voltage (VF) | 0.9 V at 10 mA - enables use as a low-drop clamp or polarity indicator in bidirectional protection schemes |
| Temperature Coefficient | –3.5 mV/°C - quantifies VZ drift with temperature, critical for high-stability reference applications |
Pinout & Package
Package: SOD-123 - surface-mount plastic case with matte tin-plated leads, UL 94V-0 rated molding compound, and cathode polarity indicated by a band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node in shunt regulation; forms reference return path |
| Cathode | Reverse breakdown terminal / Zener voltage output | Connected to regulated node; delivers stable 4.7 V when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables tight regulation without post-production trimming in cost-sensitive consumer power rails |
| SOD-123 package with level 1 moisture sensitivity | Supports standard reflow assembly without dry-pack or baking requirements |
| RoHS-compliant and halogen-free | Meets IEC 61249-2-21 and environmental compliance mandates for global electronics manufacturing |
| 10.55 mg unit weight | Minimizes board mass impact in portable and wearable device designs |
Applications
| USB Port Overvoltage Clamp | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Protects USB data/power lines from transient surges exceeding 5.5 V during hot-plug or ESD events. IC Role / Device Role / Timing Role: Zener clamping element placed between VBUS and ground to shunt excess energy before IC damage occurs. Use Value: Leverages 4.7 V nominal breakdown and 3 µA leakage to avoid false triggering while clamping at safe levels below USB 2.0 5.25 V max. |
Use Scenario: Generates clean reset signal for microcontrollers during power-up or brownout conditions. IC Role / Device Role / Timing Role: Forms precision voltage reference in RC-based reset generator, enabling deterministic release timing. Use Value: Uses 4.7 V Zener voltage and –3.5 mV/°C tempco to maintain reset threshold stability across –40 °C to +85 °C operating range. |
| Low-Power Sensor Bias Reference | LED Current Limiter Feedback Node |
Use Scenario: Supplies stable bias voltage to analog sensor front-ends in battery-operated IoT nodes. IC Role / Device Role / Timing Role: Acts as shunt reference in ultra-low-quiescent LDO or op-amp feedback loop. Use Value: Delivers 4.7 V reference with only 350 mW PD limit and 80 Ω ZZT, enabling sub-100 µA total system current. |
Use Scenario: Sets current-sense threshold in constant-current LED driver feedback path. IC Role / Device Role / Timing Role: Provides fixed reference voltage to comparator input that triggers current-limit action. Use Value: Utilizes tight 4.4–5.0 V VZ range and low 3 µA leakage to minimize offset error and improve dimming linearity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5225B-7-F | Same 4.7 V nominal Zener, but ±5% tolerance and 225 mW PD; SOT-23 package | Lower power rating limits use in higher-current shunt regulators; smaller footprint suits dense PCB layouts | Select when board space is constrained and 225 mW suffices; verify thermal margin in enclosed enclosures |
| 1N4732A | 4.7 V nominal, ±5%, but through-hole DO-41 package and 1 W PD; higher leakage (10 µA @ 3.8 V) | Requires wave soldering; suited for prototyping or legacy through-hole designs needing higher power headroom | Choose for manual assembly, high-reliability industrial power supplies, or where 1 W dissipation is required |
Compared with MMBZ5225B-7-F and 1N4732A, the BZT52C4V7-G offers optimal balance of SMD compatibility, 350 mW capability, and low 3 µA leakage-making it preferred for modern compact, low-power, and RoHS-compliant designs.
Availability
BZT52C4V7-G is available at Aetrix Electronics and suitable for USB protection circuits, microcontroller reset networks, low-power sensor biasing, and LED driver feedback loops requiring stable component supply and full RoHS/halogen-free compliance.
Supply support for BZT52C4V7-G 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete devices, analog ICs, and power management solutions for industrial, computing, and consumer markets.
The BZT52C series was developed to deliver high-reliability, low-cost Zener diodes in standardized SMD packages for general-purpose voltage regulation and protection-emphasizing manufacturability, thermal robustness, and environmental compliance.
FAQ
What is the nominal Zener voltage and tolerance of the BZT52C4V7-G?
The BZT52C4V7-G has a nominal Zener voltage of 4.7 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 4.4 V and 5.0 V at 5 mA test current. This specification is confirmed in the Electrical Specifications table of the Taiwan Semiconductor datasheet (Version C2007), ensuring predictable regulation performance in design-in applications.
What package type does the BZT52C4V7-G use, and what are its key mechanical features?
The BZT52C4V7-G uses the SOD-123 surface-mount package, featuring matte tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 flammability-rated molding compound, and polarity indicated by a cathode band. Its weight is approximately 10.55 mg, and it meets JESD201 Class 1A whisker resistance per the official mechanical data sheet.
What is the maximum power dissipation and thermal resistance of the BZT52C4V7-G?
The BZT52C4V7-G has a maximum power dissipation (PD) of 350 mW at 25 °C ambient and a junction-to-ambient thermal resistance (RθJA) of 357 °C/W. These values are specified in the Absolute Maximum Ratings and Thermal Performance sections of the Taiwan Semiconductor datasheet and define safe operating limits under natural convection conditions.
How does the BZT52C4V7-G perform in terms of leakage current and dynamic impedance?
The BZT52C4V7-G exhibits a maximum leakage current of 3 µA at 2.0 V reverse bias and a dynamic impedance of 80 Ω at 5 mA test current (IZT). These parameters are critical for low-power reference accuracy and transient response in shunt regulation-both verified in the Electrical Specifications table for the exact BZT52C4V7-G marking code "W7".
Is the BZT52C4V7-G RoHS-compliant and halogen-free?
Yes, the BZT52C4V7-G is RoHS-compliant and halogen-free in accordance with IEC 61249-2-21. This is explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet (Version C2007), confirming suitability for environmentally regulated electronics manufacturing and export compliance.
BZT52C4V7-G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.7 V
- Tolerance:
- ±5%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 3 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:
- SOD-123
BZT52C4V7-G FAQ
1.How can I place an order for BZT52C4V7-G through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C4V7-G 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 BZT52C4V7-G reliable?
The price and inventory of BZT52C4V7-G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C4V7-G is usually 5 days.
3.What payment methods are accepted for BZT52C4V7-G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C4V7-G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C4V7-G?
BZT52C4V7-G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C4V7-G 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 BZT52C4V7-G?
For technical support, including BZT52C4V7-G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C4V7-G requirements.
6.How does Aetrix verify that BZT52C4V7-G is sourced from the original manufacturer or authorized distributors?
All BZT52C4V7-G 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 BZT52C4V7-G meets industry standards.
7.What is the process for return or replacement of BZT52C4V7-G?
All BZT52C4V7-G units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C4V7-G, 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 BZT52C4V7-G part is unused and in its original packaging.
Return procedure for BZT52C4V7-G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52C4V7-G Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
