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Diodes Incorporated LZ52C9V1W
- Part No.:
- LZ52C9V1W
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- 1206 (3216 Metric)
- Datasheet:
-
LZ52C9V1W.pdf
- Description:
- DIODE ZENER 9.1V 500MW 1206
- Quantity:
- Payment:
- Shipping:
Inventory:2,575
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Product details
Overview
LZ52C9V1W from Diodes Incorporated is a surface-mount Zener diode with a nominal reverse breakdown voltage of 9.1 V, ±2% tolerance, 500 mW power dissipation, and ultra-small 1206 package. It delivers stable voltage regulation in low-power biasing, reference, and overvoltage protection circuits for industrial sensors and power supply feedback loops.
For engineers reviewing the LZ52C9V1W datasheet, LZ52C9V1W pinout, LZ52C9V1W application, or LZ52C9V1W equivalent, key selection criteria include Zener voltage accuracy (8.92–9.28 V at 5 mA), low leakage (<0.1 µA at 6.8 V), and thermal resistance (300 °C/W) for reliable operation in compact PCB layouts.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain a stable reference voltage across its terminals. Its silicon epitaxial planar construction ensures consistent VZ performance with tight 2% tolerance and low dynamic impedance (10 Ω at 5 mA, 50 Ω at 1 mA).
The device is optimized for surface-mount applications with a lead-free, halogen- and antimony-free "Green" molding compound, cathode-indicating color band, and 10 mg mass. It supports continuous operation from –65 °C to +175 °C ambient temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.92–9.28 V at IZT = 5 mA - defines precise regulation window for feedback or reference use |
| Power Dissipation (PTOT) | 500 mW at TA = 25 °C - sets maximum steady-state power handling before thermal derating |
| Zener Impedance (ZZT) | 10 Ω at 5 mA - indicates low AC impedance for stable regulation under small-signal ripple |
| Reverse Leakage (IR) | <0.1 µA at VR = 6.8 V - ensures minimal current draw in standby or high-impedance bias networks |
| Thermal Resistance (RθJA) | 300 °C/W - determines junction temperature rise per watt in standard PCB layout without heatsinking |
| Package | 1206 (3.2 × 1.6 mm) - enables automated placement and high-density routing on consumer and industrial PCBs |
Pinout & Package
Package: 1206 surface-mount ceramic-body package with cathode indicated by a color band on one end. Terminals are solderable, lead-free plated, and polarity-sensitive.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-voltage side in reverse-bias operation | Connected to lower-potential node when used as shunt regulator or voltage clamp |
| Cathode | Reverse breakdown terminal / high-voltage side in regulation mode | Marked with color band; connected to regulated output or reference point |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables accurate voltage referencing without post-production trimming in precision analog circuits |
| Ultra-low reverse leakage | Preserves signal integrity and battery life in high-impedance sensor biasing and portable electronics |
| Lead-free, halogen- and antimony-free "Green" construction | Meets RoHS 3 (2015/863/EU) and environmental compliance requirements for global OEM shipments |
| 300 °C/W thermal resistance | Supports reliable operation up to +175 °C junction temperature in thermally constrained industrial environments |
Applications
| Industrial Sensor Biasing | Switch-Mode Power Supply Feedback |
|---|---|
Use Scenario: Providing stable bias current to analog temperature or pressure sensors in factory automation modules. IC Role / Device Role / Timing Role: Zener diode acting as a precision shunt reference to set sensor excitation voltage. Use Value: Tight 2% VZ tolerance ensures consistent sensor output scaling across production batches. | Use Scenario: Regulating feedback voltage in secondary-side error amplifiers of isolated DC-DC converters. IC Role / Device Role / Timing Role: Shunt reference establishing stable 9.1 V threshold for optocoupler-driven control loop. Use Value: Low ZZT (10 Ω) minimizes regulation error under load transients, improving output stability. |
| Overvoltage Clamp for MCU I/O | Low-Power Reference in Battery Monitors |
Use Scenario: Protecting 3.3 V or 5 V microcontroller GPIO pins from ESD or surge events exceeding 6.8 V. IC Role / Device Role / Timing Role: Transient voltage suppressor clamping input voltage to safe levels during fault conditions. Use Value: Sub-0.1 µA leakage at 6.8 V prevents measurable loading on high-impedance I/O lines. | Use Scenario: Generating a stable reference for ADC measurements in lithium-ion battery fuel gauges. IC Role / Device Role / Timing Role: Precision voltage reference source feeding into resistive divider networks. Use Value: Stable VZ over –40 to +85 °C ambient enables accurate state-of-charge estimation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C9V1 | Same 9.1 V nominal, ±2% tolerance, but 300 mW rating and SOD-323 package | Lower power handling and smaller footprint; less thermal margin in sustained regulation | Prefer when board space is critical and power <300 mW |
| MMBZ5240BLT1G | 9.1 V nominal, ±5% tolerance, 350 mW, SOT-23 package, higher leakage (≤1 µA) | Looser voltage accuracy and higher leakage limit use in precision references | Acceptable for non-critical clamping where cost and availability dominate |
Compared with BZX584C9V1 and MMBZ5240BLT1G, LZ52C9V1W offers superior thermal robustness (500 mW, 300 °C/W) and tighter voltage tolerance-critical for stable feedback and reference designs where long-term drift and thermal derating must be minimized.
Availability
LZ52C9V1W is available at Aetrix Electronics and suitable for industrial sensor biasing, switch-mode power supply feedback, and overvoltage protection requiring stable component supply and RoHS-compliant sourcing.
Supply support for LZ52C9V1W 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.
This part belongs to the LZ52C series of surface-mount Zener diodes, designed specifically for high-reliability, low-leakage voltage regulation in space-constrained industrial and automotive-qualified applications.
FAQ
What is the maximum reverse voltage (VR) at which leakage remains below 0.1 µA?
The datasheet specifies that reverse leakage current (IR) is ≤0.1 µA at VR = 6.8 V. This is the highest voltage at which that leakage threshold is guaranteed; at higher voltages approaching VZ, leakage increases nonlinearly and is not specified below breakdown.
Can LZ52C9V1W be used in place of a 9.1 V through-hole Zener like 1N4739A?
No-it is not a direct replacement due to different package (1206 SMT vs. DO-41 through-hole), thermal characteristics (300 °C/W vs. ~120 °C/W), and mounting requirements. Board redesign and thermal validation are required before substitution.
Is this part recommended for new designs?
No-the datasheet explicitly states "LZ52C4V7W – LZ52C36W(LS) IS NOT RECOMMENDED FOR NEW DESIGNS. PLEASE CONTACT US." Customers should consult Diodes Incorporated for qualified replacements such as the BZT52 series or AP7361x LDO alternatives.
What does the marking "9V1" on the device body indicate?
The marking "9V1" is the industry-standard code for a 9.1 V Zener voltage rating. It appears as the visible laser-marked identifier on the cathode-end surface of the 1206 package and corresponds directly to the electrical specification in the datasheet.
LZ52C9V1W 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):
- 9.1 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 6.8 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
LZ52C9V1W FAQ
1.How can I place an order for LZ52C9V1W through Aetrix?
Please submit a Request for Quotation (RFQ) for LZ52C9V1W 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 LZ52C9V1W reliable?
The price and inventory of LZ52C9V1W are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LZ52C9V1W is usually 5 days.
3.What payment methods are accepted for LZ52C9V1W?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LZ52C9V1W transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LZ52C9V1W?
LZ52C9V1W orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LZ52C9V1W 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 LZ52C9V1W?
For technical support, including LZ52C9V1W datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LZ52C9V1W requirements.
6.How does Aetrix verify that LZ52C9V1W is sourced from the original manufacturer or authorized distributors?
All LZ52C9V1W 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 LZ52C9V1W meets industry standards.
7.What is the process for return or replacement of LZ52C9V1W?
All LZ52C9V1W units undergo pre-shipment inspection (PSI). If there is an issue with LZ52C9V1W, 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 LZ52C9V1W part is unused and in its original packaging.
Return procedure for LZ52C9V1W:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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