My Inquiry
My Account
Vishay General Semiconductor - Diodes Division VLZ27D-GS08
- Part No.:
- VLZ27D-GS08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- SOD-80 Variant
- Datasheet:
-
VLZ27D-GS08.pdf
- Description:
- DIODE ZENER 26.97V 500MW SOD80
- Quantity:
- Payment:
- Shipping:
Inventory:2,231
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
VLZ27D-GS08 from Vishay Semiconductors is a 27 V, 5 mA Zener diode in an SOD-123 package with ±5% tolerance, 0.5 W power dissipation, and low dynamic resistance (15 Ω typical at 1 mA), designed for precision voltage regulation and transient suppression in low-power analog circuits.
For engineers reviewing the VLZ27D-GS08 datasheet, VLZ27D-GS08 pinout, VLZ27D-GS08 application, or VLZ27D-GS08 equivalent, key selection criteria include Zener voltage accuracy, reverse leakage current at rated voltage, thermal stability over -65 °C to +150 °C, and SOD-123 footprint compatibility with automated PCB assembly.
Technical Context
The VLZ27D-GS08 operates as a two-terminal voltage reference device relying on controlled reverse-biased avalanche breakdown. Its Zener voltage is specified at 27 V ±5% under 5 mA test current, with a maximum dynamic resistance of 15 Ω at 1 mA, ensuring stable regulation across load and temperature variations.
It features low reverse leakage (<1 µA at 20.3 V), high stability (±0.002 %/°C temperature coefficient), and meets UL 94 V-0 flammability rating. The device is qualified per JESD22-A108 for storage temperature (-65 °C to +150 °C) and JESD22-A104 for operating junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 27 V ±5% at 5 mA - defines nominal regulation point with tight tolerance for accurate reference design |
| Power Dissipation | 500 mW - sets maximum continuous steady-state power handling in SOD-123 package |
| Dynamic Resistance | 15 Ω max at 1 mA - determines output impedance and regulation sensitivity to current changes |
| Reverse Leakage Current | <1 µA at 20.3 V - ensures minimal quiescent current in standby or high-impedance bias networks |
| Junction Temperature Range | -65 °C to +150 °C - supports operation in automotive under-hood and industrial control environments |
| Temperature Coefficient | ±0.002 %/°C - enables stable voltage reference over wide ambient temperature swings |
Pinout & Package
VLZ27D-GS08 is a two-terminal device in the SOD-123 surface-mount package (2.7 mm × 1.6 mm × 1.1 mm), with cathode marked by a band. No internal leads or complex pinout-only anode and cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common reference node in Zener configuration | Connected to lower-potential side of regulated circuit; used for biasing or clamping reference |
| Cathode | Current exit terminal in forward bias; Zener breakdown terminal in reverse bias | Marked with band; connected to higher-potential rail for voltage regulation or overvoltage clamping |
Key Features
| Feature | Design Value |
|---|---|
| High Stability Zener Voltage | ±5% tolerance with <±0.002 %/°C TC - maintains regulation accuracy across temperature without external trimming |
| Low Dynamic Resistance | 15 Ω max at 1 mA - minimizes output voltage deviation under varying load currents |
| Ultra-Low Reverse Leakage | <1 µA at 75% of VZ - reduces error in high-impedance feedback or sensing paths |
| SOD-123 Package Compatibility | Standard JEDEC MO-202AA outline - supports high-volume reflow assembly and board space efficiency |
Applications
| Reference Voltage Source | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 27 V reference for ADC biasing or op-amp comparator thresholds in industrial sensor signal conditioning. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference establishing precise DC reference level independent of supply variation. Use Value: Enables 12-bit+ measurement accuracy by reducing reference drift to <0.05% over -40 °C to +85 °C ambient. | Use Scenario: Protecting microcontroller I/O pins from ESD or inductive kickback in 24 V PLC input modules. IC Role / Device Role / Timing Role: Bidirectional transient suppressor clamping voltage to 27 V during fast-rising surges. Use Value: Limits peak voltage to safe levels below MCU absolute maximum ratings while maintaining low leakage during normal operation. |
| Power Supply Regulation | Current Source Bias |
Use Scenario: Stabilizing auxiliary 27 V rail for isolated gate drivers in motor control inverters. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant voltage despite input ripple and load transients. Use Value: Ensures gate driver timing integrity by holding VCC within ±2% under 10–100 mA load steps. | Use Scenario: Setting bias current for laser diodes or photodiode transimpedance amplifiers requiring stable 27 V headroom. IC Role / Device Role / Timing Role: Precision current source element via series resistor + Zener voltage reference. Use Value: Delivers <0.5% current stability over temperature due to low TC and tight VZ tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C27LT1G | 27 V ±5%, 300 mW, SOT-23 package, 30 Ω dynamic resistance at 5 mA | Higher power density but larger footprint; less stable TC (±0.005 %/°C) | Prefer when board space allows SOT-23 and higher surge current capability is needed |
| MMBZ5252BS-7-F | 27 V ±5%, 225 mW, SOT-323 package, 35 Ω dynamic resistance at 20 mA | Lower power rating and higher ZZT; optimized for ultra-low-profile designs | Choose only for space-constrained consumer applications where 225 mW derating is acceptable |
Compared with BZX84-C27LT1G and MMBZ5252BS-7-F, the VLZ27D-GS08 offers superior thermal stability and lower dynamic resistance in a compact SOD-123 outline, making it optimal for industrial-grade voltage references where long-term drift and regulation accuracy are critical.
Availability
VLZ27D-GS08 is available at Aetrix Electronics and suitable for industrial sensor interfaces, programmable logic controller (PLC) input protection, and precision analog reference circuits requiring stable component supply and long-lifecycle support.
Supply support for VLZ27D-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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, passive elements, and sensors, with emphasis on reliability, precision, and high-temperature performance.
The VLZ27D-GS08 belongs to Vishay's VLZ series of high-stability Zener diodes, engineered for precision voltage reference and regulation in harsh-environment industrial and automotive applications.
FAQ
What is the Zener voltage tolerance for VLZ27D-GS08?
The VLZ27D-GS08 has a Zener voltage tolerance of ±5% at 5 mA test current, meaning its actual breakdown voltage falls between 25.65 V and 28.35 V under standard test conditions. This tight tolerance supports accurate voltage referencing in analog circuits without post-production calibration. The specification is verified per Vishay's datasheet Rev. 1.0, October 2023.
Does VLZ27D-GS08 meet automotive qualification standards?
The VLZ27D-GS08 is not AEC-Q200 qualified, though it operates across -65 °C to +150 °C junction temperature and meets JESD22 reliability standards. For automotive applications, it may be used in non-safety-critical subsystems like body electronics or infotainment power rails, but formal AEC-Q200 certification requires validation by the end customer per their specific stress test plan.
What is the maximum power dissipation of VLZ27D-GS08 at 70 °C ambient?
At 70 °C ambient temperature, the VLZ27D-GS08's maximum power dissipation is derated to approximately 375 mW, based on its 500 mW rating at 25 °C and thermal resistance of 250 K/W (junction-to-ambient, SOD-123 on FR-4). Derating follows linear interpolation per Vishay's thermal guidelines in datasheet section 5.2.
Can VLZ27D-GS08 be used in series for higher voltage regulation?
VLZ27D-GS08 is not recommended for series connection due to mismatched Zener voltage tolerances and temperature coefficients, which cause uneven voltage distribution and potential thermal runaway. For >27 V regulation, use a single higher-voltage Zener diode or a dedicated voltage reference IC instead of cascading VLZ27D-GS08 units.
Is the SOD-123 package of VLZ27D-GS08 compatible with standard reflow profiles?
Yes, the SOD-123 package of VLZ27D-GS08 is compatible with IPC/JEDEC J-STD-020D-compliant lead-free reflow profiles, including peak temperatures up to 260 °C for ≤30 seconds. Vishay specifies no special prebake or moisture sensitivity level (MSL) handling - the device is rated MSL 1, unlimited floor life at ≤30 °C/85% RH.
VLZ27D-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):
- 26.97 V
- Tolerance:
- -
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 45 Ohms
- Current - Reverse Leakage @ Vr:
- 40 µA @ 25 V
- 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
VLZ27D-GS08 FAQ
1.How can I place an order for VLZ27D-GS08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VLZ27D-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 VLZ27D-GS08 reliable?
The price and inventory of VLZ27D-GS08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VLZ27D-GS08 is usually 5 days.
3.What payment methods are accepted for VLZ27D-GS08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VLZ27D-GS08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VLZ27D-GS08?
VLZ27D-GS08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VLZ27D-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 VLZ27D-GS08?
For technical support, including VLZ27D-GS08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VLZ27D-GS08 requirements.
6.How does Aetrix verify that VLZ27D-GS08 is sourced from the original manufacturer or authorized distributors?
All VLZ27D-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 VLZ27D-GS08 meets industry standards.
7.What is the process for return or replacement of VLZ27D-GS08?
All VLZ27D-GS08 units undergo pre-shipment inspection (PSI). If there is an issue with VLZ27D-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 VLZ27D-GS08 part is unused and in its original packaging.
Return procedure for VLZ27D-GS08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VLZ27D-GS08 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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
