My Inquiry
My Account
Taiwan Semiconductor Corporation BZT52C4V3-G
- Part No.:
- BZT52C4V3-G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C4V3-G.pdf
- Description:
- DIODE ZENER 4.3V 350MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:6,347
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZT52C4V3-G from Taiwan Semiconductor is a surface-mount Zener diode with nominal zener voltage 4.3 V, ±5% tolerance, 350 mW power dissipation, and SOD-123 package. It regulates voltage in low-power biasing, reference, and protection circuits across consumer and industrial electronics.
For engineers reviewing the BZT52C4V3-G datasheet, BZT52C4V3-G pinout, BZT52C4V3-G application, or BZT52C4V3-G equivalent, key selection criteria include zener voltage accuracy (4.0–4.6 V), dynamic impedance (90 Ω @ 5 mA), leakage current (≤3 µA @ 1.0 V), temperature coefficient (−3.5 mV/°C), and junction temperature range (−55 to +150 °C).
Technical Context
The BZT52C4V3-G operates as a single-die, cathode-banded Zener diode optimized for stable voltage clamping and reference generation at low test currents (IZT = 5 mA). Its 90 Ω zener impedance at 5 mA and −3.5 mV/°C temperature coefficient enable predictable regulation under varying thermal conditions.
Designed for surface-mount assembly per J-STD-002, it features matte tin-plated leads, JESD 201 Class 1A whisker resistance, and UL 94V-0 molding compound. Polarity is unambiguously indicated by a visible cathode band on the SOD-123 case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.0–4.6 V (nominal 4.3 V at 5 mA; ±5% tolerance ensures tight reference stability) |
| Power Dissipation (PD) | 350 mW (maximum continuous power handling at 25°C ambient; derates linearly above 25°C) |
| Zener Impedance (ZZT) | 90 Ω @ 5 mA (low dynamic impedance supports stable regulation under small-signal load variations) |
| Leakage Current (IR) | ≤3 µA @ 1.0 V (minimal reverse leakage preserves low-power circuit integrity) |
| Temperature Coefficient | −3.5 mV/°C (negative TC enables predictable drift compensation in temperature-sensitive references) |
| Junction Temperature Range | −55 to +150 °C (supports operation in extended industrial and automotive under-hood environments) |
| Forward Voltage (VF) | 0.9 V @ 10 mA (enables reliable forward conduction for dual-direction protection or biasing) |
Pinout & Package
Package: SOD-123 - surface-mount plastic case with cathode band marking; dimensions per JEDEC DO-213AC; weight ≈10.55 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Zener breakdown cathode-side reference | Connected to lower-potential node; forms regulated reference when cathode is biased above anode |
| Cathode | Zener breakdown terminal / voltage reference output | Marked by band; supplies stable 4.3 V reference when reverse-biased at ≥5 mA |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables precise voltage referencing without post-production trimming in cost-sensitive designs |
| SOD-123 package with level-1 moisture sensitivity | Supports standard reflow profiles without baking; reduces manufacturing overhead |
| RoHS-compliant and halogen-free | Meets IEC 61249-2-21 and global environmental compliance requirements for commercial and industrial PCBs |
| Junction-to-ambient thermal resistance (RθJA) | 357 °C/W - allows direct thermal estimation for board-level power derating without heatsinking |
Applications
| Overvoltage Protection in USB Peripherals | Low-Power Voltage Reference for ADC Biasing |
|---|---|
Use Scenario: Clamps transient surges on 5 V USB data/power lines to prevent IC damage during ESD events or hot-plug insertion. IC Role / Device Role / Timing Role: Zener clamp placed between VBUS and GND; conducts only above 4.3 V to shunt excess energy. Use Value: Leverages 4.3 V nominal zener voltage and ≤3 µA leakage to avoid loading the 5 V rail during normal operation while responding within nanoseconds to overvoltage. |
Use Scenario: Provides stable reference voltage for 10-bit microcontroller ADCs in battery-powered sensor nodes. IC Role / Device Role / Timing Role: Reverse-biased reference source delivering 4.3 V to ADC VREF+ pin via high-impedance divider. Use Value: −3.5 mV/°C TC and 90 Ω impedance ensure <±0.5% reference drift across −25 to +70 °C operating range without active compensation. |
| LED Current Regulation in Indicator Circuits | Microcontroller Reset Circuit Threshold |
Use Scenario: Sets fixed forward voltage drop in series with red/green LEDs to maintain consistent brightness across supply variations. IC Role / Device Role / Timing Role: Used in shunt configuration to stabilize LED string voltage; anode tied to LED cathode, cathode to supply. Use Value: 0.9 V forward voltage and 350 mW rating allow direct integration into low-current (<20 mA) indicator paths without external resistors. |
Use Scenario: Generates clean reset threshold for 3.3 V microcontrollers by feeding regulated 4.3 V into a precision comparator or integrated reset controller. IC Role / Device Role / Timing Role: Zener-based reference input to reset IC (e.g., TPS3808); triggers reset when supply drops below 3.0 V. Use Value: Tight 4.0–4.6 V tolerance ensures repeatable reset assertion across production batches without calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5229BS-7-F | Zener voltage 4.3 V (±5%), but SOT-23 package; higher RθJA (400 °C/W); 200 mW PD | Higher thermal resistance limits power handling in compact layouts; requires tighter layout control for same dissipation | Select when SOT-23 footprint is standardized and thermal margin >100°C is available |
| 1N4733A | Through-hole DO-41 package; same 4.3 V rating but ±5% tolerance and 1 W PD; no RoHS/halogen-free guarantee | Not suitable for automated SMT lines; larger footprint; lacks moisture sensitivity level certification | Select only for legacy through-hole designs where reworkability and high-power margin outweigh SMT compatibility |
Compared with MMBZ5229BS-7-F and 1N4733A, the BZT52C4V3-G offers optimal balance of SMT compatibility, 350 mW power capability, certified RoHS/halogen-free compliance, and industry-standard SOD-123 thermal performance-making it preferred for new industrial and consumer PCB designs requiring reliability and manufacturability.
Availability
BZT52C4V3-G is available at Aetrix Electronics and suitable for overvoltage protection, low-power voltage reference, and LED biasing applications requiring stable component supply, consistent parametric performance, and full RoHS/halogen-free compliance.
Supply support for BZT52C4V3-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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, computing, and consumer markets since 1979.
The BZT52C series is part of TSC's standard Zener diode product line, engineered specifically for high-volume, cost-sensitive SMT applications demanding tight voltage tolerance, robust thermal performance, and full environmental compliance.
FAQ
What is the exact zener voltage range specified for BZT52C4V3-G?
The BZT52C4V3-G has a guaranteed zener voltage range of 4.0 V to 4.6 V at 5 mA test current (IZT), with nominal value 4.3 V and ±5% tolerance. This specification is validated per Taiwan Semiconductor's C2007 datasheet revision and applies strictly at TA = 25°C unless otherwise noted. The BZT52C4V3-G maintains this range across its qualified operating temperature span.
Does BZT52C4V3-G support lead-free reflow soldering?
Yes, the BZT52C4V3-G features matte tin-plated leads compliant with J-STD-002 for solderability and is rated at Moisture Sensitivity Level 1 per J-STD-020. It withstands standard Pb-free reflow profiles (peak 260°C) without preconditioning, making it fully compatible with modern lead-free SMT assembly processes.
What is the maximum reverse leakage current for BZT52C4V3-G at 1.0 V?
The BZT52C4V3-G exhibits a maximum reverse leakage current (IR) of 3 µA when reverse-biased at VR = 1.0 V, as specified in the Electrical Specifications table of the official datasheet. This low leakage ensures minimal parasitic loading in high-impedance reference and sensing circuits.
Can BZT52C4V3-G be used in place of a 3.3 V zener diode?
No - the BZT52C4V3-G is rated for 4.3 V nominal zener voltage (4.0–4.6 V range) and is not a functional substitute for a 3.3 V device such as BZT52C3V3-G. Substituting it would result in incorrect regulation thresholds; always match the required zener voltage band to the application's design target.
Is the SOD-123 package of BZT52C4V3-G compatible with IPC-7351B land patterns?
Yes, the SOD-123 outline dimensions in the BZT52C4V3-G datasheet align with IPC-7351B generic SOD-123 footprint recommendations. The suggested pad layout provided by Taiwan Semiconductor matches standard IPC density levels, supporting reliable solder joint formation and automated optical inspection.
BZT52C4V3-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):
- 4.3 V
- Tolerance:
- ±5%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 1 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
BZT52C4V3-G FAQ
1.How can I place an order for BZT52C4V3-G through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C4V3-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 BZT52C4V3-G reliable?
The price and inventory of BZT52C4V3-G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C4V3-G is usually 5 days.
3.What payment methods are accepted for BZT52C4V3-G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C4V3-G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C4V3-G?
BZT52C4V3-G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C4V3-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 BZT52C4V3-G?
For technical support, including BZT52C4V3-G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C4V3-G requirements.
6.How does Aetrix verify that BZT52C4V3-G is sourced from the original manufacturer or authorized distributors?
All BZT52C4V3-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 BZT52C4V3-G meets industry standards.
7.What is the process for return or replacement of BZT52C4V3-G?
All BZT52C4V3-G units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C4V3-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 BZT52C4V3-G part is unused and in its original packaging.
Return procedure for BZT52C4V3-G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52C4V3-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…
