My Inquiry
My Account
Diodes Incorporated LZ52C27W
- Part No.:
- LZ52C27W
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- 1206 (3216 Metric)
- Datasheet:
-
LZ52C27W.pdf
- Description:
- DIODE ZENER 27V 500MW 1206
- Quantity:
- Payment:
- Shipping:
Inventory:4,879
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LZ52C27W from Diodes Incorporated is a surface-mount Zener diode with a nominal reverse breakdown voltage of 27 V, ±2% tolerance, 500 mW power dissipation, and ultra-small 1206 package. It delivers stable voltage regulation in low-leakage, precision reference and overvoltage protection circuits for DC power rails in industrial control modules and sensor signal conditioning stages.
For engineers reviewing the LZ52C27W datasheet, LZ52C27W pinout, LZ52C27W application, or LZ52C27W equivalent, key selection criteria include its 27 V Zener voltage range (26.46–27.54 V at 5 mA), 80 Ω dynamic impedance at test current, 0.1 µA maximum reverse leakage at 20 V, 1206 footprint compatibility, and RoHS-compliant lead-free plating.
Technical Context
This Zener diode operates as a two-terminal voltage reference device, relying on controlled avalanche breakdown in silicon epitaxial planar junction structure. Its thermal resistance (RθJA = 300 °C/W) and 175 °C max operating temperature support use in thermally constrained PCB layouts without forced cooling.
Designed for surface-mount assembly, it uses a color band to denote cathode polarity and features halogen- and antimony-free "Green" molding compound. The 10 mg mass and 2.2 mm × 1.0 mm × 1.6 mm profile enable high-density placement in space-limited applications such as portable instrumentation and automotive body electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27 V nominal, 26.46–27.54 V range at IZT = 5 mA - ensures tight regulation tolerance for precision biasing |
| Power Dissipation (PTOT) | 500 mW at TA = 25 °C - defines maximum continuous DC power handling before thermal derating |
| Zener Impedance (ZZT) | 80 Ω at IZT = 5 mA - indicates voltage stability under small-signal AC variations |
| Reverse Leakage (IR) | 0.1 µA max at VR = 20 V - enables low-error reference in high-impedance feedback networks |
| Thermal Resistance (RθJA) | 300 °C/W - determines junction-to-ambient temperature rise per watt dissipated |
| Operating Temperature | −65 to +175 °C - supports deployment in extended-temperature industrial and under-hood automotive environments |
Pinout & Package
Package: 1206 surface-mount package (2.2 mm × 1.0 mm × 1.6 mm), cathode denoted by color band. Terminals are lead-free plated; polarity must be observed during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration; accepts up to 200 mA forward surge |
| Cathode | Reverse breakdown terminal | Connected to higher-potential node; carries regulated output voltage when reverse biased above VZ |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables direct replacement in 27 V reference designs without recalibration or resistor trimming |
| Ultra-low reverse leakage (0.1 µA @ 20 V) | Minimizes error current in high-gain op-amp reference buffers and battery-monitoring circuits |
| 1206 footprint compatibility | Supports automated pick-and-place assembly and reflow soldering per IPC-J-STD-020 standards |
| Halogen- and antimony-free "Green" compound | Meets IEC 61249-2-21 and JEDEC J-STD-609A Class 1 requirements for environmentally compliant manufacturing |
Applications
| Industrial Power Monitoring | Automotive Body Control Module |
|---|---|
Use Scenario: Monitoring 24 V supply rail integrity in PLC I/O modules. IC Role / Device Role / Timing Role: Zener diode provides stable 27 V reference for comparator threshold setting. Use Value: Tight 2% VZ tolerance ensures consistent trip point across temperature and unit variance. | Use Scenario: Overvoltage clamp on LIN bus transceiver VCC input. IC Role / Device Role / Timing Role: Shunts transient energy above 27 V to protect downstream 5 V LDO regulator. Use Value: 500 mW rating sustains 100 ms load dump pulses without degradation. |
| Portable Medical Sensor Biasing | Smart Energy Meter Reference |
Use Scenario: Generating precise bias voltage for analog front-end amplifiers in pulse oximeters. IC Role / Device Role / Timing Role: Functions as low-noise, low-drift voltage reference in ratiometric measurement chain. Use Value: 0.1 µA leakage prevents loading of high-impedance sensor outputs. | Use Scenario: Providing calibration reference for ADC in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Serves as primary shunt reference in isolated power supply feedback loop. Use Value: 300 °C/W RθJA allows operation at full rating in sealed meter enclosures up to 70 °C ambient. |
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 |
|---|---|---|---|
| BZX84-C27 | Same 27 V nominal, ±5% tolerance, SOT-23 package, 300 mW rating | Smaller footprint but higher thermal resistance (450 °C/W); lower power handling limits sustained clamping | Select for space-constrained boards where 5% tolerance is acceptable and peak power < 300 mW |
| MMSZ5256B | 27 V nominal, ±5% tolerance, SOD-123 package, 500 mW rating, 100 Ω ZZT | Higher dynamic impedance reduces regulation accuracy in precision references | Prefer for cost-sensitive consumer applications where 5% tolerance and moderate stability suffice |
Compared with BZX84-C27 and MMSZ5256B, LZ52C27W offers tighter 2% tolerance and identical 500 mW rating in a 1206 package-making it optimal for industrial-grade voltage references requiring long-term stability and thermal margin.
Availability
LZ52C27W is available at Aetrix Electronics and suitable for industrial power monitoring, automotive body control modules, portable medical sensor biasing, and smart energy meter reference applications requiring stable component supply and RoHS-compliant sourcing.
Supply support for LZ52C27W 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' surface-mount Zener diode product line, engineered specifically for precision voltage regulation and overvoltage protection in compact, thermally demanding PCB environments.
FAQ
What is the Zener voltage tolerance for LZ52C27W?
LZ52C27W has a guaranteed ±2% Zener voltage tolerance, meaning its breakdown voltage falls between 26.46 V and 27.54 V when tested at 5 mA. This tight tolerance eliminates need for external trimming resistors in precision reference circuits and ensures consistent performance across production lots and temperature ranges.
Can LZ52C27W be used in automotive applications?
Yes-LZ52C27W is qualified for automotive body electronics per its −65 °C to +175 °C operating temperature range and AEC-Q200-compatible construction. It is commonly deployed in LIN bus overvoltage clamping and ECU power rail monitoring, though formal AEC-Q200 certification documentation must be obtained directly from Diodes Incorporated for safety-critical use.
What is the maximum reverse leakage current at 20 V?
The maximum reverse leakage current for LZ52C27W at 20 V is 0.1 µA, measured at 25 °C ambient. This ultra-low leakage preserves accuracy in high-impedance reference divider networks and minimizes quiescent current draw in battery-powered sensor nodes.
Is LZ52C27W compatible with standard 1206 reflow profiles?
Yes-LZ52C27W is rated for standard lead-free reflow soldering per IPC-J-STD-020, with peak temperature up to 260 °C. Its "Green" molding compound and lead-free plating ensure compatibility with industry-standard reflow ovens and eliminate halogen-related corrosion risks in humid environments.
LZ52C27W 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):
- 27 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 20 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
LZ52C27W FAQ
1.How can I place an order for LZ52C27W through Aetrix?
Please submit a Request for Quotation (RFQ) for LZ52C27W 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 LZ52C27W reliable?
The price and inventory of LZ52C27W are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LZ52C27W is usually 5 days.
3.What payment methods are accepted for LZ52C27W?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LZ52C27W transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LZ52C27W?
LZ52C27W orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LZ52C27W 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 LZ52C27W?
For technical support, including LZ52C27W datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LZ52C27W requirements.
6.How does Aetrix verify that LZ52C27W is sourced from the original manufacturer or authorized distributors?
All LZ52C27W 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 LZ52C27W meets industry standards.
7.What is the process for return or replacement of LZ52C27W?
All LZ52C27W units undergo pre-shipment inspection (PSI). If there is an issue with LZ52C27W, 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 LZ52C27W part is unused and in its original packaging.
Return procedure for LZ52C27W:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LZ52C27W 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…
