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Diodes Incorporated LZ52C7V5W
- Part No.:
- LZ52C7V5W
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- 1206 (3216 Metric)
- Datasheet:
-
LZ52C7V5W.pdf
- Description:
- DIODE ZENER 7.5V 500MW 1206
- Quantity:
- Payment:
- Shipping:
Inventory:5,216
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Product details
Overview
LZ52C7V5W from Diodes Incorporated is a surface-mount Zener diode with a nominal reverse breakdown voltage of 7.5 V, ±2% tolerance, 500 mW power dissipation, and ultra-low leakage current (≤0.1 µA at 5.0 V). It serves as a precision voltage reference or overvoltage clamp in low-power analog signal conditioning circuits, such as sensor biasing and ADC reference stabilization.
For engineers reviewing the LZ52C7V5W datasheet, LZ52C7V5W pinout, LZ52C7V5W application, or LZ52C7V5W equivalent, key selection criteria include its tight 7.35–7.65 V Zener range at 5 mA test current, 7 Ω dynamic impedance at IZT, 50 Ω knee impedance at 1 mA, and compatibility with 1206 SMT assembly processes.
Technical Context
This device operates as a silicon epitaxial planar Zener diode optimized for stable reverse-biased regulation. Its 2% VZ tolerance and low ZZT (7 Ω) ensure minimal output variation under load changes in feedback networks or reference dividers.
Designed for surface-mount use in space-constrained PCBs, it features a color-band cathode marking, lead-free plating, and halogen/antimony-free "Green" molding compound. Thermal resistance RθJA is 300 °C/W, supporting operation from –65 °C to +175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.35–7.65 V at IZT = 5 mA - defines precise clamping threshold for voltage-sensitive circuits |
| Zener Impedance (ZZT) | 7 Ω at IZT = 5 mA - ensures minimal regulation error under varying load current |
| Knee Impedance (ZZK) | 50 Ω at IZK = 1 mA - maintains usable regulation even near minimum bias current |
| Reverse Leakage (IR) | ≤0.1 µA at VR = 5.0 V - prevents loading of high-impedance reference nodes |
| Power Dissipation (PTOT) | 500 mW at TA = 25 °C - sets maximum continuous DC power handling in ambient air |
| Package | 1206 (3.2 × 1.6 mm) - standard SMT footprint compatible with automated placement and reflow |
Pinout & Package
Package: 1206 surface-mount package with cathode indicated by color band; terminals are lead-free plated; weight ≈10 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in reverse-bias configuration; forms regulated output node when cathode is biased above anode |
| Cathode | Zener breakdown terminal / voltage reference output | Marked with color band; connected to higher-potential rail to enable controlled reverse conduction at VZ |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables direct replacement in precision reference designs without recalibration |
| Ultra-low reverse leakage (≤0.1 µA) | Preserves accuracy in high-impedance divider or op-amp feedback paths |
| 1206 package with "Green" molding | Supports RoHS-compliant, halogen-free manufacturing and automated SMT assembly |
| Low ZZT (7 Ω) and ZZK (50 Ω) | Delivers stable regulation across wide current range (1–5 mA), reducing need for external buffering |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Microcontroller Voltage Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Zener diode providing fixed 7.5 V reference for Wheatstone bridge biasing and ADC reference scaling. Use Value: Tight 2% VZ tolerance and low ZZT minimize gain drift and offset error across temperature and supply variation. | Use Scenario: Generating a stable internal reference for 10-bit SAR ADC in battery-powered IoT edge nodes. IC Role / Device Role / Timing Role: Low-leakage Zener supplying regulated voltage to ADC VREF pin under intermittent 3.3 V system rail conditions. Use Value: ≤0.1 µA leakage prevents measurable current draw during deep-sleep modes, extending battery life. |
| USB-C Port Overvoltage Protection | Automotive Body Control Module Clamp |
Use Scenario: Clamping transient surges on USB-C CC lines during hot-plug events. IC Role / Device Role / Timing Role: Fast-response Zener shunt protecting Type-C controller GPIO pins from ESD and inductive spikes. Use Value: 7.5 V breakdown threshold sits safely above normal CC line signaling (0–5.5 V) while triggering before IC damage thresholds. | Use Scenario: Suppressing load-dump transients on 12 V LIN bus nodes in automotive door modules. IC Role / Device Role / Timing Role: Primary clamp element absorbing energy during ISO 7637-2 Pulse 5a events up to 40 V peak. Use Value: 500 mW rating and robust 1206 thermal mass allow brief 40 V/100 ms pulses without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C7V5 | Same 7.5 V nominal, ±5% tolerance, SOT-23 package, higher ZZT (15 Ω) | Higher thermal resistance (RθJA ≈ 350 °C/W); less suitable for sustained 5 mA bias | Select when board space is constrained and ±5% tolerance is acceptable |
| MMSZ5235B | 7.5 V nominal, ±5% tolerance, SOD-123 package, ZZT = 10 Ω, PTOT = 350 mW | Lower power rating limits continuous regulation current to ~3.5 mA at 25 °C | Select for cost-sensitive consumer applications where 350 mW suffices and 1206 footprint is unavailable |
Compared with BZX84-C7V5 and MMSZ5235B, LZ52C7V5W offers tighter tolerance, lower impedance, and higher power handling in a standardized 1206 layout-making it optimal for industrial-grade analog references requiring long-term stability and manufacturability.
Availability
LZ52C7V5W is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB-C protection circuits, and automotive body control modules requiring stable component supply, consistent Zener performance, and RoHS-compliant sourcing.
Supply support for LZ52C7V5W 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, specializing in high-reliability, industry-qualified components for automotive, industrial, and computing markets.
The LZ52C series belongs to Diodes' precision Zener diode product line, engineered for stable voltage reference and overvoltage protection in compact SMT designs where tight tolerance and low leakage are critical.
FAQ
What is the maximum continuous Zener current for LZ52C7V5W at 25°C ambient?
The device supports up to 66.7 mA continuous Zener current at 25°C, calculated from PTOT = 500 mW and VZ = 7.5 V (IZMAX = PTOT/VZ). Derating applies above 25°C per the 300 °C/W RθJA curve; at 70°C ambient, max current drops to ~35 mA.
Does LZ52C7V5W meet automotive AEC-Q200 requirements?
No-LZ52C7V5W is not AEC-Q200 qualified. It is rated for industrial temperature range (–65 °C to +175 °C) but lacks the stress testing, failure analysis, and qualification documentation required for automotive-grade use. For AEC-Q200 applications, consider Diodes' AZ series Zeners.
Can LZ52C7V5W be used in series to achieve higher reference voltages?
Yes-multiple LZ52C7V5W units may be connected in series to generate higher reference voltages (e.g., two in series yield ~15 V), but tolerance accumulates (±2.8% for two units), and thermal tracking between devices is not guaranteed. For >10 V references, dedicated multi-Zener ICs or bandgap references are preferred.
Is the 1206 footprint compatible with standard IPC-7351B land patterns?
Yes-the device's mechanical dimensions (G = 2.2 mm, X = 1.0 mm, X1 = 4.2 mm, Y = 1.6 mm) align with IPC-7351B generic 1206 land pattern recommendations. The suggested pad layout in DS45096 Rev. 7 confirms compatibility with standard stencil apertures and reflow profiles for lead-free soldering.
LZ52C7V5W 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):
- 7.5 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 5 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
LZ52C7V5W FAQ
1.How can I place an order for LZ52C7V5W through Aetrix?
Please submit a Request for Quotation (RFQ) for LZ52C7V5W 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 LZ52C7V5W reliable?
The price and inventory of LZ52C7V5W are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LZ52C7V5W is usually 5 days.
3.What payment methods are accepted for LZ52C7V5W?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LZ52C7V5W transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LZ52C7V5W?
LZ52C7V5W orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LZ52C7V5W 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 LZ52C7V5W?
For technical support, including LZ52C7V5W datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LZ52C7V5W requirements.
6.How does Aetrix verify that LZ52C7V5W is sourced from the original manufacturer or authorized distributors?
All LZ52C7V5W 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 LZ52C7V5W meets industry standards.
7.What is the process for return or replacement of LZ52C7V5W?
All LZ52C7V5W units undergo pre-shipment inspection (PSI). If there is an issue with LZ52C7V5W, 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 LZ52C7V5W part is unused and in its original packaging.
Return procedure for LZ52C7V5W:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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