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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Diodes Incorporated LZ52C24W

Name: LZ52C24W
Brand: Diodes Incorporated
SKU: LZ52C24W
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LZ52C24W

Manufacturer:: Diodes Incorporated

Category:: Single Zener Diodes

Package:: 1206 (3216 Metric)

Datasheet:: LZ52C24W.pdf

Description:: DIODE ZENER 24V 500MW 1206

Quantity:: RFQ Add To RFQ list

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Inventory:5,010

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Product details

Overview

LZ52C24W from Diodes Incorporated is a surface-mount Zener diode with a nominal reverse breakdown voltage of 24 V, ±2% tolerance, 500 mW power dissipation, and ultra-small 1206 package. It provides precise voltage regulation in low-power supply rails, reference circuits, and overvoltage protection for microcontroller I/O pins.

For engineers reviewing the LZ52C24W datasheet, LZ52C24W pinout, LZ52C24W application, or LZ52C24W equivalent, key selection criteria include Zener voltage accuracy (23.52–24.48 V at 5 mA), low leakage current (≤0.1 µA at 18 V), thermal resistance (300 °C/W), and RoHS-compliant lead-free plating.

Technical Context

This Zener diode operates in reverse-bias breakdown mode to maintain stable voltage across its terminals under varying load or input conditions. Its silicon epitaxial planar construction ensures consistent V_Z performance and low dynamic impedance (80 Ω at 5 mA, 220 Ω at 1 mA).

The device is rated for operation from –65 °C to +175 °C and features a color band indicating cathode polarity. Its 1206 footprint supports automated placement and reflow soldering in space-constrained PCB layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	24 V nominal, 23.52–24.48 V range at 5 mA - enables accurate 24 V rail clamping or reference generation
Power Dissipation	500 mW at 25 °C - supports continuous regulation in low-current bias networks
Zener Impedance	80 Ω at I_ZT = 5 mA; 220 Ω at I_ZK = 1 mA - defines voltage stability under light-to-moderate load variation
Reverse Leakage	≤0.1 µA at V_R = 18 V - minimizes quiescent current in battery-powered sensing nodes
Thermal Resistance	300 °C/W junction-to-ambient - requires derating above 25 °C ambient for sustained 500 mW operation
Package	1206 (3.2 × 1.6 mm) - compatible with standard SMT assembly lines and high-density routing

Pinout & Package

Package: 1206 surface-mount ceramic body with cathode indicated by a color band on the anode end. Terminals are lead-free plated; polarity must be observed during placement.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / Zener cathode reference point	Connected to lower-potential node; reverse voltage applied between cathode and anode to activate regulation
Cathode	Zener breakdown terminal / voltage reference output	Marked with color band; supplies regulated voltage when reverse-biased above 23.52 V

Key Features

Feature	Design Value
±2% Zener voltage tolerance	Enables tight regulation without post-production trimming in precision reference designs
Ultra-low reverse leakage	0.1 µA max at 18 V allows use in micropower sensor biasing and battery monitoring circuits
Lead-free and halogen-free "Green" construction	Meets RoHS 3 (2015/863/EU) and JEDEC J-STD-609A Class 1 standards for environmental compliance
1206 footprint with 10 mg mass	Supports high-volume pick-and-place assembly while minimizing board area and thermal mass

Applications

Industrial Sensor Signal Conditioning

Microcontroller I/O Protection

Use Scenario: Stabilizing excitation voltage for resistive bridge sensors in PLC analog input modules.

IC Role / Device Role / Timing Role: Zener voltage reference providing 24 V ±2% bias to Wheatstone bridge arms.

Use Value: Maintains measurement linearity by limiting bridge voltage drift to <±0.5% over temperature.

Use Scenario: Clamping ESD transients on UART or GPIO lines of ARM Cortex-M4-based edge controllers.

IC Role / Device Role / Timing Role: Low-leakage shunt protector diverting >8 kV HBM surges away from MCU pins.

Use Value: Prevents latch-up with <0.1 µA standby current, preserving sleep-mode battery life.

Low-Power Reference Supply

DC-DC Converter Feedback Divider

Use Scenario: Generating stable 24 V reference for ADC reference buffers in portable test equipment.

IC Role / Device Role / Timing Role: Precision shunt regulator supplying clean reference to SAR ADC driver op-amps.

Use Value: Delivers <10 ppm/°C effective TC via matched impedance network and low ZZT.

Use Scenario: Setting output voltage of isolated flyback converter in industrial power supplies.

IC Role / Device Role / Timing Role: Zener element in optocoupler feedback path, regulating TL431 bias current.

Use Value: Enables ±1.5% output accuracy across 10–40 V input range with minimal component count.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C24	Same 24 V ±5% tolerance, SOT-23 package, 300 mW rating	Higher thermal resistance (450 °C/W); unsuitable for sustained 500 mW operation	Select when board space is constrained and power demand remains <200 mW
MMSZ5242B	24 V ±5%, SOD-123 package, 500 mW, but 100 Ω Z_ZT at 20 mA	Looser tolerance and higher dynamic impedance reduce regulation accuracy in precision references	Prefer for cost-sensitive non-critical clamping where ±5% V_Z is acceptable

Compared with BZX84-C24 and MMSZ5242B, LZ52C24W delivers tighter voltage tolerance (±2% vs. ±5%), lower Z_ZT, and verified 1206 manufacturability-making it optimal for high-accuracy, medium-power regulation where thermal and layout constraints permit its footprint.

Availability

LZ52C24W is available at Aetrix Electronics and suitable for industrial sensor conditioning, microcontroller I/O protection, and low-power reference supply designs requiring stable component supply and full RoHS 3 compliance.

Supply support for LZ52C24W 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 and manufacturing operations across Asia and the Americas.

The LZ52C series belongs to Diodes' precision Zener diode product line, engineered specifically for surface-mount voltage regulation and reference applications demanding tight tolerance, low leakage, and green material compliance.

FAQ

What is the maximum reverse voltage that can be continuously applied to LZ52C24W without breakdown?

The LZ52C24W begins controlled Zener breakdown at a minimum of 23.52 V (V_Z min). Applying reverse voltage below this threshold-such as ≤18 V-results in only leakage current (≤0.1 µA). Sustained reverse bias above 24.48 V risks exceeding power limits unless current is strictly limited by external series resistance.

Does LZ52C24W require a heatsink in standard 1206 PCB layouts?

No heatsink is required for LZ52C24W at 25 °C ambient and ≤500 mW dissipation. Its 300 °C/W R_θJA assumes standard FR-4 PCB with typical copper pour. Derating is necessary above 25 °C: power must be reduced by 1.67 mW/°C above ambient to avoid exceeding 175 °C junction temperature.

Can LZ52C24W be used in place of a 24 V Zener with ±5% tolerance?

Yes, LZ52C24W may replace ±5% Zeners in applications where tighter regulation improves performance-e.g., reference supplies or precision clamping-but requires verification of forward voltage drop (≤1.5 V at 200 mA) and thermal margin, as its 2% tolerance increases cost and may not be needed in non-critical circuits.

Is LZ52C24W suitable for automotive applications per AEC-Q200?

No. LZ52C24W is not AEC-Q200 qualified. While its operating temperature range (–65 °C to +175 °C) overlaps with automotive requirements, Diodes does not list this part in its AEC-Q200 stress-tested portfolio. For automotive use, consider Diodes' AZ24 series or other explicitly qualified Zener alternatives.

LZ52C24W 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):: 24 V

Tolerance:: ±2%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 80 Ohms

Current - Reverse Leakage @ Vr:: 100 nA @ 18 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

LZ52C24W FAQ

1.How can I place an order for LZ52C24W through Aetrix?

Please submit a Request for Quotation (RFQ) for LZ52C24W 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 LZ52C24W reliable?

The price and inventory of LZ52C24W are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LZ52C24W is usually 5 days.

3.What payment methods are accepted for LZ52C24W?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LZ52C24W transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LZ52C24W?

LZ52C24W orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LZ52C24W 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 LZ52C24W?

For technical support, including LZ52C24W datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LZ52C24W requirements.

6.How does Aetrix verify that LZ52C24W is sourced from the original manufacturer or authorized distributors?

All LZ52C24W 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 LZ52C24W meets industry standards.

7.What is the process for return or replacement of LZ52C24W?

All LZ52C24W units undergo pre-shipment inspection (PSI). If there is an issue with LZ52C24W, 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 LZ52C24W part is unused and in its original packaging.

Return procedure for LZ52C24W:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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