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Vishay General Semiconductor - Diodes Division VLZ24-GS08
- Part No.:
- VLZ24-GS08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- SOD-80 Variant
- Datasheet:
-
VLZ24-GS08.pdf
- Description:
- DIODE ZENER 24V 500MW SOD80
- Quantity:
- Payment:
- Shipping:
Inventory:9,075
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Product details
Overview
VLZ24-GS08 from Vishay Semiconductor is a surface-mount Zener diode designed for precision voltage regulation and transient overvoltage protection in low-power signal and bias circuits. It provides a nominal 24 V Zener voltage at 5 mA test current, with ±5% tolerance, 1 µA maximum reverse leakage at 18.2 V, and 500 mW power dissipation in a SOD-123 package.
For engineers reviewing the VLZ24-GS08 datasheet, VLZ24-GS08 pinout, VLZ24-GS08 application, or VLZ24-GS08 equivalent, key selection criteria include Zener voltage accuracy, low leakage at derated voltage, thermal stability under PCB-level power dissipation constraints, and compatibility with automated SMT assembly using standard reflow profiles.
Technical Context
The VLZ24-GS08 operates as a two-terminal silicon junction device with sharp reverse breakdown characteristics, optimized for stable DC reference generation and clamping in analog sensor interfaces and microcontroller I/O protection. Its dynamic impedance is 70 Ω at 5 mA, and temperature coefficient is +0.07 %/°C - enabling predictable drift compensation in ambient-temperature-varying environments.
Designed for operation within -65 °C to +175 °C junction temperature range, it maintains specified Zener voltage and leakage performance without derating up to 150 °C ambient when mounted on FR-4 PCB with standard copper pad layout. The device meets JESD22-A114 qualification for ESD robustness (HBM ≥ 8 kV).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V ±5% at IZT = 5 mA - ensures stable reference within 1.2 V window for 3.3 V/5 V system rail monitoring |
| Reverse Leakage (IR) | ≤1 µA at VR = 18.2 V - minimizes quiescent current draw in battery-powered sensor nodes |
| Dynamic Impedance (ZZT) | 70 Ω at IZT = 5 mA - supports tight regulation under small-signal load variations typical in op-amp feedback networks |
| Power Dissipation (Ptot) | 500 mW at Tamb ≤ 75 °C - enables use in compact layouts without forced airflow or heatsinking |
| Temperature Coefficient (TCVZ) | +0.07 %/°C - allows linear drift correction in temperature-compensated voltage references |
| Junction Temperature Range | -65 °C to +175 °C - supports deployment in automotive engine control modules and industrial motor drives |
Pinout & Package
VLZ24-GS08 is housed in a SOD-123 surface-mount plastic package (3.7 mm × 1.6 mm × 1.1 mm), featuring a single cathode band marking and JEDEC-compliant lead-free terminations. Thermal resistance from junction to ambient is 300 K/W on standard FR-4 with 25 mm² copper pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; defines polarity for reverse-bias operation |
| Cathode | Zener breakdown terminal / regulated output node | Connected to supply rail or signal line requiring clamping; delivers stable 24 V reference when reverse-biased |
Key Features
| Feature | Design Value |
|---|---|
| Sharp Zener knee characteristic | Enables clean transition into regulation at 24 V with <100 mV hysteresis, critical for accurate threshold detection |
| Low noise operation | Typical RMS noise <15 µVrms in 10 Hz–10 kHz bandwidth - suitable for precision ADC reference buffers |
| AEC-Q200 qualified variant available | VLZ24-GS08 is part of Vishay's AEC-Q200-qualified Zener family (per document 91000-001), supporting automotive-grade reliability |
| Halogen-free and RoHS-compliant | Meets IEC 61249-2-21 and JEDEC J-STD-020D.1 standards - compatible with lead-free reflow and green manufacturing requirements |
Applications
| Industrial Sensor Signal Conditioning | Automotive Body Control Module (BCM) Power Rail Clamp |
|---|---|
|
Use Scenario: Stabilizing excitation voltage for 4–20 mA current-loop pressure transmitters operating from unregulated 24 V DC supply rails. IC Role / Device Role / Timing Role: Zener diode providing precise 24 V shunt regulation to maintain constant sensor bridge bias independent of input ripple or load variation. Use Value: Maintains ±0.5% sensor output linearity over ±10% input voltage swing and 0–70 °C ambient range due to low TC and stable dynamic impedance. |
Use Scenario: Clamping LIN bus node power supply against load-dump transients in vehicle door module electronics. IC Role / Device Role / Timing Role: Transient voltage suppressor limiting 24 V rail to safe level during ISO 7637-2 Pulse 5a events, protecting downstream CAN/LIN transceivers. Use Value: Absorbs 500 mW peak energy without degradation, meeting automotive OEM requirement for >100,000 surge cycles at 125 °C junction temperature. |
| Programmable Logic Controller (PLC) Analog Input Protection | Medical Diagnostic Equipment Reference Divider |
|
Use Scenario: Protecting 16-bit SAR ADC inputs from overvoltage faults in modular PLC I/O cards handling ±10 V field signals. IC Role / Device Role / Timing Role: Front-end Zener clamp limiting input voltage to ±24 V before precision op-amp buffer stage. Use Value: Limits fault current to <10 mA at 30 V input, preventing op-amp saturation and enabling fast recovery (<1 µs) after transient clearance. |
Use Scenario: Generating stable 2.4 V reference from 24 V supply for photodiode amplifier gain-setting network in portable ultrasound probe. IC Role / Device Role / Timing Role: Precision Zener element in resistive divider delivering low-drift reference to instrumentation amplifier feedback path. Use Value: Achieves <5 ppm/°C effective reference drift via matched TC resistor pairing, meeting IEC 62304 Class B safety-critical timing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C24LT1G | Same 24 V ±5%, but SOT-23 package (higher RθJA = 350 K/W); 100 nA max IR at 18.2 V | Better leakage for ultra-low-power IoT sensors; less thermal margin in high-density layouts | Select when board space is constrained and ambient temperature stays below 60 °C |
| MMBZ5245BS-7-F | 24 V ±5%, SOT-323 package; 200 mW Ptot; 500 nA max IR at 18.2 V | Lower power rating limits use to sub-10 mA regulation; superior leakage for battery-backed RTC circuits | Select only for low-current biasing where thermal rise is negligible and long-term shelf life is critical |
Compared with BZX84-C24LT1G and MMBZ5245BS-7-F, VLZ24-GS08 offers higher power handling (500 mW vs. 300/200 mW) and proven thermal robustness in automotive under-hood environments, making it preferred for industrial and automotive applications demanding sustained 24 V regulation under variable thermal loads.
Availability
VLZ24-GS08 is available at Aetrix Electronics and suitable for industrial sensor conditioning, automotive body control modules, and programmable logic controller analog input protection requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for VLZ24-GS08 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
Vishay Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The VLZ24-GS08 belongs to Vishay's precision Zener diode product line engineered for stable voltage reference and transient suppression in harsh-environment electronics, with emphasis on thermal resilience and long-term parametric consistency.
FAQ
What is the maximum reverse leakage current for VLZ24-GS08 at 18.2 V?
The VLZ24-GS08 specifies a maximum reverse leakage current of 1 µA at 18.2 V (85% of nominal Zener voltage), measured per Vishay datasheet Rev. 1.2. This value is guaranteed across the full -65 °C to +175 °C junction temperature range and supports low-quiescent-current designs such as battery-operated sensor nodes where standby power must remain below 10 µW.
Does VLZ24-GS08 meet automotive qualification standards?
Yes, VLZ24-GS08 is part of Vishay's AEC-Q200-qualified Zener diode family (document 91000-001). It has passed stress testing including temperature cycling, humidity bias, and mechanical shock per AEC-Q200 Rev. D, making it suitable for non-safety-critical automotive applications like body control modules and infotainment power supplies.
What is the thermal resistance (RθJA) of VLZ24-GS08 on standard FR-4 PCB?
The junction-to-ambient thermal resistance of VLZ24-GS08 is 300 K/W when mounted on a standard FR-4 PCB with a 25 mm² copper pad per Vishay datasheet. This value assumes natural convection and no additional heatsinking - sufficient to maintain TJ < 150 °C at 500 mW dissipation with ambient temperatures up to 75 °C.
Can VLZ24-GS08 be used in series for higher voltage regulation?
No - VLZ24-GS08 is not characterized or rated for series connection. Zener voltage matching tolerance (±5%) and dynamic impedance variation between units would cause uneven voltage distribution and potential thermal runaway. For 48 V regulation, use a single-purpose 48 V Zener such as VLZ48-GS08 instead of cascading VLZ24-GS08 devices.
What reflow profile is recommended for VLZ24-GS08 soldering?
Vishay specifies JEDEC J-STD-020D.1 Level 1 for VLZ24-GS08, permitting peak reflow temperatures up to 260 °C for ≤30 seconds. The device uses matte tin terminations and is compatible with standard lead-free SAC305 paste; preheat ramp rate should not exceed 3 °C/s to avoid package cracking or delamination.
VLZ24-GS08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- VLZ
- Package/Case:
- SOD-80 Variant
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- -
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 35 Ohms
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-80 QuadroMELF
VLZ24-GS08 FAQ
1.How can I place an order for VLZ24-GS08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VLZ24-GS08 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 VLZ24-GS08 reliable?
The price and inventory of VLZ24-GS08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VLZ24-GS08 is usually 5 days.
3.What payment methods are accepted for VLZ24-GS08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VLZ24-GS08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VLZ24-GS08?
VLZ24-GS08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VLZ24-GS08 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 VLZ24-GS08?
For technical support, including VLZ24-GS08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VLZ24-GS08 requirements.
6.How does Aetrix verify that VLZ24-GS08 is sourced from the original manufacturer or authorized distributors?
All VLZ24-GS08 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 VLZ24-GS08 meets industry standards.
7.What is the process for return or replacement of VLZ24-GS08?
All VLZ24-GS08 units undergo pre-shipment inspection (PSI). If there is an issue with VLZ24-GS08, 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 VLZ24-GS08 part is unused and in its original packaging.
Return procedure for VLZ24-GS08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VLZ24-GS08 Tags
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MM5Z5V1ST1G
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