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Vishay General Semiconductor - Diodes Division TZQ5260B-GS18
- Part No.:
- TZQ5260B-GS18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- SOD-80 Variant
- Datasheet:
-
TZQ5260B-GS18.pdf
- Description:
- DIODE ZENER 43V 500MW SOD80
- Quantity:
- Payment:
- Shipping:
Inventory:4,055
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Product details
Overview
TZQ5260B-GS18 from Vishay Semiconductors is a precision small-signal Zener diode with nominal zener voltage 43 V, ±5 % tolerance, 3 mA test current (IZT), < 0.1 μA reverse leakage at VR = 33 V, and dynamic resistance of 33 Ω at IZT - designed for stable voltage reference and regulation in low-power analog circuits.
For engineers reviewing the TZQ5260B-GS18 datasheet, TZQ5260B-GS18 pinout, TZQ5260B-GS18 application, or TZQ5260B-GS18 equivalent, this device serves as a high-stability, low-noise voltage reference where thermal drift control (< +0.095 %/K) and sharp reverse breakdown are critical in instrumentation, power supply feedback, and sensor biasing.
Technical Context
This QuadroMELF (SOD-80) packaged Zener operates under DC conditions at thermal equilibrium with case temperature maintained at 30 °C ± 2 °C. Its zener voltage is specified at IZT = 3 mA, and its temperature coefficient is positive and tightly bounded at < +0.095 %/K - indicating predictable, monotonic VZ increase with junction temperature.
The device exhibits very low reverse leakage (< 0.1 μA at VR = 33 V), low noise, and high stability over time and temperature. Its 500 mW total power dissipation rating applies with RthJA ≤ 300 K/W, and it is rated for junction temperatures up to 175 °C with MSL level 1 handling per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage (VZ) | 43 V nominal, ±5 % tolerance - ensures precise voltage clamping or reference within 2.15 V window at 3 mA test current |
| Test current (IZT) | 3 mA - operating point where VZ and dynamic resistance are guaranteed; matches typical feedback loop current in shunt regulators |
| Dynamic resistance (ZZ) | 33 Ω at IZT - low impedance stabilizes output against load transients in reference applications |
| Reverse leakage (IR) | < 0.1 μA at VR = 33 V - minimizes error current in high-impedance bias networks and precision references |
| Temperature coefficient (TKVZ) | < +0.095 %/K - enables predictable, linear VZ drift for compensated designs above ~5 V nominal |
| Power dissipation (Ptot) | 500 mW - supports continuous operation at 43 V × 11.6 mA max, suitable for low-current shunt regulation |
| Package | QuadroMELF (SOD-80) - glass-passivated cylindrical package with MSL level 1, UL 94 V-0 molding compound, 34 mg weight |
Pinout & Package
As a two-terminal axial diode in QuadroMELF (SOD-80) package, TZQ5260B-GS18 has no discrete pins but features cathode identification via a dark band on the glass body. The device is symmetric in mechanical mounting but polarized electrically: cathode is marked, anode is unmarked end.
| Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener breakdown terminal | Connected to higher potential in reverse-bias regulation; carries full Z-current during clamping |
| Anode (unmarked end) | Reference/return node | Typically tied to system ground or feedback node; completes current path during Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Very sharp reverse characteristic | Enables clean, well-defined breakdown onset - critical for accurate threshold detection and low-hysteresis clamping |
| Low reverse leakage current | < 0.1 μA at 33 V allows use in nanoampere-level bias chains without degrading accuracy |
| High stability over time and temperature | Guaranteed VZ shift < ±0.5 % after 1000 h life test at rated power - supports long-term calibration integrity |
| Low noise performance | Minimizes voltage perturbation in sensitive analog front-ends such as ADC references and op-amp biasing |
| ±5 % VZ tolerance | Reduces need for post-manufacture trimming in cost-sensitive industrial and consumer voltage reference designs |
Applications
| Voltage Reference for Precision ADCs | Overvoltage Clamp in Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Providing stable 43 V reference to 16-bit SAR ADC's internal reference buffer or external scaling network. IC Role / Device Role / Timing Role: Passive voltage reference source - sets full-scale input range independent of supply variation. Use Value: Low dynamic resistance (33 Ω) and < +0.095 %/K TC ensure reference drift remains < 0.5 mV/°C, preserving ENOB over temperature. |
Use Scenario: Protecting downstream op-amps and ADC inputs from transient overvoltage in 4–20 mA loop-powered sensors. IC Role / Device Role / Timing Role: Shunt overvoltage clamp - conducts only when input exceeds 43 V, diverting excess current safely. Use Value: Sharp reverse knee and < 0.1 μA leakage prevent signal loading during normal operation while enabling fast response to >43 V surges. |
| Feedback Element in Isolated Flyback Regulators | Stabilized Bias Supply for High-Voltage GaN Drivers |
|
Use Scenario: Setting output voltage in optocoupler-coupled feedback loop of 24 V isolated flyback converter. IC Role / Device Role / Timing Role: Zener-based TL431 alternative - provides stable reference to secondary-side error amplifier. Use Value: 43 V rating allows direct use with common 36–48 V auxiliary windings; ±5 % tolerance eliminates need for resistor trimming. |
Use Scenario: Generating regulated 43 V gate bias for enhancement-mode GaN HEMTs in high-frequency PFC stages. IC Role / Device Role / Timing Role: Primary-side Zener clamp - regulates bootstrap or isolated bias rail without active regulation. Use Value: 500 mW power rating supports continuous 11.6 mA bias current; MSL level 1 and 175 °C Tj rating suit reflow and high-temp environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55-C43 (ON Semiconductor) | Same 43 V nominal, ±5 %, but SOD-34 (DO-35) package; higher ZZ ≈ 50 Ω; TKVZ ≈ +0.09 %/K | Lower power rating (500 mW same), but larger DO-35 footprint and higher thermal resistance limits high-temp reliability | Select when legacy DO-35 layout exists; avoid in space-constrained or thermally demanding PCBs where SOD-80's lower RthJA matters |
| MMSZ43ET1G (onsemi) | SOD-123 package; same 43 V, ±5 %, but IZT = 5 mA, ZZ = 45 Ω, IR = 0.1 μA at 34.4 V | Surface-mount compatibility with standard 0805 footprints, but less stable at low currents and higher dynamic impedance | Prefer for automated assembly on dense boards; not recommended for sub-5 mA reference nodes where TZQ5260B-GS18's 3 mA IZT and 33 Ω ZZ provide tighter regulation |
Compared with BZX55-C43 and MMSZ43ET1G, TZQ5260B-GS18 delivers superior low-current regulation (3 mA IZT), lowest dynamic resistance (33 Ω), and best-in-class thermal coefficient control (< +0.095 %/K) - making it optimal for precision analog reference and high-reliability industrial clamping where stability and sharp knee behavior are prioritized over footprint size.
Availability
TZQ5260B-GS18 is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, feedback regulation, and high-stability biasing applications requiring stable component supply across automotive, industrial, and test equipment programs.
Supply support for TZQ5260B-GS18 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 manufacturer of discrete semiconductors and passive components, specializing in high-reliability, high-precision devices for industrial, automotive, and computing markets.
TZQ5260B-GS18 belongs to Vishay's TZQ52xxB series of QuadroMELF Zeners - engineered for ultra-stable voltage reference and low-noise clamping in mission-critical analog signal paths and power management systems.
FAQ
What is the zener voltage tolerance and test condition for TZQ5260B-GS18?
The TZQ5260B-GS18 has a nominal zener voltage of 43 V with a tolerance of ±5 %, measured at a test current (IZT) of 3 mA under thermal equilibrium conditions with case temperature held at 30 °C ± 2 °C. This tolerance defines the guaranteed VZ range (40.85 V to 45.15 V) for production units and is verified during final test.
Does TZQ5260B-GS18 have a specified maximum junction temperature?
Yes, TZQ5260B-GS18 has a maximum junction temperature (Tj) rating of 175 °C, as defined in Vishay's absolute maximum ratings table. This limit applies under steady-state operation with appropriate thermal management and must be respected to ensure long-term reliability and parametric stability of the TZQ5260B-GS18.
What is the reverse leakage current specification for TZQ5260B-GS18?
The reverse leakage current (IR) for TZQ5260B-GS18 is specified as < 0.1 μA at VR = 33 V, measured at Tamb = 25 °C. This ultra-low leakage supports high-impedance circuit nodes and minimizes error in precision reference and biasing applications where TZQ5260B-GS18 is commonly deployed.
Is TZQ5260B-GS18 compatible with lead-free reflow soldering processes?
Yes, TZQ5260B-GS18 is qualified for lead-free reflow soldering with a peak temperature of 260 °C for 10 seconds at the terminals, per J-STD-020. Its QuadroMELF (SOD-80) package uses UL 94 V-0 compliant molding compound and meets MSL level 1 - meaning it can be assembled without dry-pack or baking requirements.
How does the temperature coefficient of TZQ5260B-GS18 affect its performance in varying ambient conditions?
The temperature coefficient (TKVZ) of TZQ5260B-GS18 is < +0.095 %/K, meaning its zener voltage increases predictably with junction temperature. For example, a +50 °C rise yields ~0.215 V increase in VZ - a key factor when designing temperature-compensated references or selecting complementary components in the TZQ5260B-GS18 circuit path.
TZQ5260B-GS18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- SOD-80 Variant
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 43 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 93 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 33 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
TZQ5260B-GS18 FAQ
1.How can I place an order for TZQ5260B-GS18 through Aetrix?
Please submit a Request for Quotation (RFQ) for TZQ5260B-GS18 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 TZQ5260B-GS18 reliable?
The price and inventory of TZQ5260B-GS18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TZQ5260B-GS18 is usually 5 days.
3.What payment methods are accepted for TZQ5260B-GS18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TZQ5260B-GS18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TZQ5260B-GS18?
TZQ5260B-GS18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TZQ5260B-GS18 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 TZQ5260B-GS18?
For technical support, including TZQ5260B-GS18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TZQ5260B-GS18 requirements.
6.How does Aetrix verify that TZQ5260B-GS18 is sourced from the original manufacturer or authorized distributors?
All TZQ5260B-GS18 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 TZQ5260B-GS18 meets industry standards.
7.What is the process for return or replacement of TZQ5260B-GS18?
All TZQ5260B-GS18 units undergo pre-shipment inspection (PSI). If there is an issue with TZQ5260B-GS18, 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 TZQ5260B-GS18 part is unused and in its original packaging.
Return procedure for TZQ5260B-GS18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TZQ5260B-GS18 Tags
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