My Inquiry
My Account
Diodes Incorporated LZ52C4V7W
- Part No.:
- LZ52C4V7W
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- 1206 (3216 Metric)
- Datasheet:
-
LZ52C4V7W.pdf
- Description:
- DIODE ZENER 4.7V 500MW 1206
- Quantity:
- Payment:
- Shipping:
Inventory:9,080
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LZ52C4V7W from Diodes Incorporated is a surface-mount Zener diode with a nominal reverse breakdown voltage of 4.7 V, ±2% tolerance, 500 mW power dissipation, and ultra-small 1206 package-designed for precision voltage regulation and reference in low-power analog circuits such as sensor biasing and ADC reference stabilization.
For engineers reviewing the LZ52C4V7W datasheet, LZ52C4V7W pinout, LZ52C4V7W application, or LZ52C4V7W equivalent, this device serves as a compact, RoHS-compliant, low-leakage Zener solution where stable 4.7 V clamping or shunt regulation under ≤5 mA test current is required in space-constrained PCB layouts.
Technical Context
This Zener diode operates in reverse-biased breakdown mode with a tightly controlled VZ range of 4.61–4.79 V at IZT = 5 mA. Its zener impedance is 70 Ω at test current and rises to 600 Ω at knee current (IZK = 1.0 mA), indicating predictable low-current regulation behavior.
Thermal resistance is 300 °C/W junction-to-ambient, enabling operation up to +175 °C storage temperature. The 1206 package supports reflow soldering and features lead-free plating with cathode polarity marked by a color band.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.61–4.79 V at 5 mA - ensures precise 4.7 V reference within ±2% tolerance for stable analog circuit biasing |
| Power Dissipation (PTOT) | 500 mW - supports continuous shunt regulation in low-power supply rails without forced cooling |
| Zener Impedance (ZZT) | 70 Ω at 5 mA - maintains low dynamic resistance for minimal output voltage variation under load changes |
| Reverse Leakage (IR) | 0.5 µA at 1.0 V - enables ultra-low quiescent current in battery-powered voltage monitor circuits |
| Forward Voltage (VF) | 1.5 V at 200 mA - allows use as a low-drop rectifier or ESD clamp in bidirectional protection schemes |
| Package | 1206 (3.2 × 1.6 mm) - compatible with standard SMT pick-and-place and reflow processes; footprint matches IPC-7351B |
Pinout & Package
Package: 1206 surface-mount ceramic-body Zener diode with cathode denoted by a color band on one end. Terminals are metallized for lead-free soldering; polarity must be observed during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection in shunt regulator | Connected to ground or lower potential node; enables forward conduction below 1.5 V |
| Cathode | Zener breakdown terminal / high-side connection in shunt regulator | Connected to regulated voltage node; reverse-biased to maintain 4.7 V reference |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables direct replacement in precision reference designs without calibration adjustment |
| Ultra-low reverse leakage (0.5 µA @ 1 V) | Minimizes standby current in always-on monitoring circuits and extends battery life |
| Lead-free, halogen- and antimony-free "Green" construction | Meets RoHS 3 (2015/863/EU) and automotive ELV requirements without material compliance risk |
| 1206 footprint with 10 mg mass | Reduces board area vs. DO-35 or SOD-123 while maintaining thermal margin for 500 mW operation |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Microcontroller Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Shunt Zener reference providing fixed 4.7 V bias to Wheatstone bridge, rejecting supply ripple. Use Value: Tight ±2% VZ tolerance eliminates need for post-calibration trimming in production test. | Use Scenario: Supplying accurate reference to 12-bit internal ADC in battery-powered IoT edge node MCU. IC Role / Device Role / Timing Role: Low-leakage Zener source replacing external reference IC to reduce BOM count and quiescent current. Use Value: 0.5 µA reverse leakage at 1 V preserves battery runtime over multi-year deployments. |
| USB Port Overvoltage Clamp | EEPROM Write-Voltage Stabilizer |
Use Scenario: Protecting 5 V USB data line receivers from transient overvoltage events. IC Role / Device Role / Timing Role: Bidirectional clamp using forward conduction (1.5 V) and reverse breakdown (4.7 V) to limit excursion to ±1.5 V. Use Value: Dual-mode clamping avoids need for separate TVS and series resistor in cost-sensitive consumer ports. | Use Scenario: Generating stable 4.7 V programming voltage for serial EEPROM write operations. IC Role / Device Role / Timing Role: Precision shunt regulator ensuring consistent VPP across varying supply conditions during byte-write cycles. Use Value: 70 Ω dynamic impedance prevents VPP droop during high-current write pulses, improving write reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C4V7 | Same 4.7 V ±2%, but SOD-323 package (smaller, higher RθJA = 350 °C/W) | Higher thermal resistance limits continuous power in high-ambient environments | Select when board space is critical and power < 300 mW is sufficient |
| MMSZ4700T1G | 4.7 V ±5%, SOD-123 package, 500 mW rating, higher leakage (1.0 µA @ 1 V) | Looser tolerance requires system-level calibration; higher leakage impacts ultra-low-IQ designs | Select for cost-sensitive industrial controls where ±5% is acceptable |
Compared with BZX584-C4V7 and MMSZ4700T1G, LZ52C4V7W delivers tighter tolerance and lower leakage in a thermally robust 1206 package-making it optimal for precision analog references where long-term stability and low quiescent current are prioritized over minimal footprint.
Availability
LZ52C4V7W is available at Aetrix Electronics and suitable for industrial sensor conditioning, low-power microcontroller reference, USB port overvoltage clamp, and EEPROM write-voltage stabilization requiring stable component supply and RoHS-compliant sourcing.
Supply support for LZ52C4V7W 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The LZ52C series belongs to Diodes' precision Zener diode product line, engineered specifically for high-accuracy voltage reference and regulation in space-constrained, thermally demanding industrial and automotive-qualified applications.
FAQ
What is the maximum continuous power dissipation for LZ52C4V7W at 75°C ambient?
At 75°C ambient, derating begins at 25°C per the datasheet curve: 500 mW × (1 − (75 − 25)/150) = 333 mW. This accounts for the 300 °C/W thermal resistance and ensures junction temperature stays below 175°C. Operation above this level risks parametric shift or premature failure.
Is LZ52C4V7W suitable for use as a voltage reference in a 16-bit DAC buffer circuit?
Yes-its ±2% VZ tolerance, 70 Ω dynamic impedance, and sub-µA leakage make it viable for 12-bit accuracy; however, for true 16-bit systems, external trimming or a dedicated reference IC is recommended due to inherent Zener drift with temperature and aging.
Does the LZ52C4V7W have AEC-Q200 qualification for automotive use?
No-the LZ52C4V7W is not AEC-Q200 qualified. While its operating temperature range (−65°C to +175°C) exceeds automotive requirements, Diodes does not list this part in its AEC-Q200-certified portfolio. For automotive applications, consider the AZ series or contact Diodes for qualified alternatives.
Can LZ52C4V7W replace a 1N4732A in an existing through-hole design?
It can serve the same 4.7 V function electrically, but the 1206 SMD package requires PCB redesign-no direct drop-in replacement. Thermal performance differs (RθJA = 300 °C/W vs. ~120 °C/W for TO-92), so power handling must be re-evaluated in the new layout.
LZ52C4V7W Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 1206 (3216 Metric)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 4.7 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 70 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 1206
LZ52C4V7W FAQ
1.How can I place an order for LZ52C4V7W through Aetrix?
Please submit a Request for Quotation (RFQ) for LZ52C4V7W 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 LZ52C4V7W reliable?
The price and inventory of LZ52C4V7W are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LZ52C4V7W is usually 5 days.
3.What payment methods are accepted for LZ52C4V7W?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LZ52C4V7W transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LZ52C4V7W?
LZ52C4V7W orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LZ52C4V7W 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 LZ52C4V7W?
For technical support, including LZ52C4V7W datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LZ52C4V7W requirements.
6.How does Aetrix verify that LZ52C4V7W is sourced from the original manufacturer or authorized distributors?
All LZ52C4V7W 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 LZ52C4V7W meets industry standards.
7.What is the process for return or replacement of LZ52C4V7W?
All LZ52C4V7W units undergo pre-shipment inspection (PSI). If there is an issue with LZ52C4V7W, 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 LZ52C4V7W part is unused and in its original packaging.
Return procedure for LZ52C4V7W:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LZ52C4V7W 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
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
