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Vishay General Semiconductor - Diodes Division TZQ5261B-GS18
- Part No.:
- TZQ5261B-GS18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- SOD-80 Variant
- Datasheet:
-
TZQ5261B-GS18.pdf
- Description:
- DIODE ZENER 47V 500MW SOD80
- Quantity:
- Payment:
- Shipping:
Inventory:4,113
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Product details
Overview
TZQ5261B-GS18 from Vishay Semiconductors is a precision small-signal Zener diode with nominal zener voltage 47 V, ±5 % tolerance, 2.7 mA test current, < 0.1 μA reverse leakage at VR, and 36 Ω dynamic resistance at IZT - designed for stable voltage reference and regulation in low-power analog circuits.
For engineers reviewing the TZQ5261B-GS18 datasheet, TZQ5261B-GS18 pinout, TZQ5261B-GS18 application, or TZQ5261B-GS18 equivalent, key selection criteria include zener voltage accuracy, temperature coefficient (+0.095 %/K), thermal stability (MSL level 1), QuadroMELF SOD-80 package compatibility, and low-noise voltage reference performance under DC bias.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown at 47 V, specified at thermal equilibrium with case temperature held at 30 °C ± 2 °C. Its sharp reverse characteristic and low noise support high-precision feedback loops in regulated power supplies and sensor signal conditioning.
The +0.095 %/K temperature coefficient indicates positive drift with junction temperature rise, requiring compensation in wide-temperature-range designs. It is rated for 500 mW total power dissipation with RthJA = 500 K/W on standard PCB, and maximum junction temperature of 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V nominal, ±5 % tolerance - ensures stable reference within ±2.35 V across production lot |
| Test Current (IZT) | 2.7 mA - operating point where VZ and dynamic resistance are guaranteed |
| Dynamic Resistance (ZZ) | < 105 Ω at IZT - limits output impedance in shunt regulator configurations |
| Reverse Leakage (IR) | < 0.1 μA at VR - minimizes error current in high-impedance reference nodes |
| Temp. Coefficient (TKVZ) | +0.095 %/K - predictable positive drift enables linear compensation in temperature-critical designs |
| Power Dissipation (Ptot) | 500 mW - supports continuous operation up to 47 V × 10.6 mA without derating at 25 °C |
| Junction Temp. Max | 175 °C - allows use in industrial environments with elevated ambient temperatures |
Pinout & Package
QuadroMELF (SOD-80) glass-body surface-mount package: cylindrical, axial-leaded, cathode identified by band; dimensions 3.7 mm length × 1.6 mm diameter; weight ≈ 34 mg; UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to ground or lower potential node in shunt regulator topology |
| Cathode | Zener breakdown terminal / high-side connection | Connected to input voltage source; develops regulated 47 V drop when reverse-biased above knee |
Key Features
| Feature | Design Value |
|---|---|
| Very sharp reverse characteristic | Enables precise knee detection and stable regulation at low currents (IZ ≥ 2.7 mA) |
| Low reverse leakage current | < 0.1 μA ensures minimal loading error in high-Z reference divider networks |
| High stability over time and temperature | Specified at thermal equilibrium with ±5 % VZ tolerance maintained across 1000-hour life tests |
| Low noise performance | Supports clean DC references in audio preamps, ADC voltage references, and precision instrumentation |
| MSL Level 1 rating | Allows unlimited floor life and reflow soldering at 260 °C/10 s without baking preconditioning |
Applications
| Voltage Reference for ADC/DAC | Overvoltage Clamp in Sensor Interface |
|---|---|
Use Scenario: Provides stable 47 V reference for 16-bit SAR ADC input scaling in industrial data acquisition systems. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference establishing precise full-scale input range. Use Value: ±5 % VZ tolerance and +0.095 %/K TKVZ enable calibrated offset correction with < 0.1 % gain drift over -40 to +85 °C. | Use Scenario: Protects 48 V CAN transceiver inputs from transient surges exceeding 50 V during load dump events. IC Role / Device Role / Timing Role: Passive overvoltage clamp limiting rail voltage to 47 V ±5 % before protection IC activation. Use Value: Low dynamic resistance (< 105 Ω) ensures fast clamping response with < 200 ns turn-on delay under 1 A surge. |
| Low-Power Power Supply Regulation | Calibration Standard in Test Equipment |
Use Scenario: Regulates auxiliary 47 V bias rail for op-amp biasing in battery-powered portable analyzers. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant voltage despite 1–10 mA load variation. Use Value: 500 mW power rating and MSL Level 1 allow direct integration into compact, reflow-assembled modules. | Use Scenario: Serves as traceable 47 V calibration point in handheld multimeters and benchtop DMMs. IC Role / Device Role / Timing Role: Primary voltage standard referenced against NIST-traceable sources during factory calibration. Use Value: High long-term stability and low noise (< 10 μV RMS) meet ANSI/ISO 17025 requirements for Class II metrology tools. |
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-C47 (ON Semiconductor) | Same 47 V nominal, ±5 %, but TO-92 package; higher ZZ (~150 Ω); MSL Level 1 not specified | Through-hole assembly only; less suitable for automated SMT lines or space-constrained layouts | Select if legacy through-hole design or manual prototyping required |
| MMSZ5261B (Vishay) | SOD-123 package; same 47 V/±5 %, but higher IR (≤1.0 μA) and lower Ptot (500 mW same, but RthJA ~ 400 K/W) | Higher thermal resistance limits sustained power in dense PCBs; smaller footprint trades off thermal margin | Select for ultra-compact layouts where board area is critical and average power < 200 mW |
Compared with BZX55-C47 and MMSZ5261B, TZQ5261B-GS18 offers superior thermal performance (RthJA = 500 K/W on standard PCB), lowest leakage (< 0.1 μA), and QuadroMELF's proven stability in high-reliability industrial deployments - making it optimal for SMT-based precision reference and clamping where long-term drift and noise matter.
Availability
TZQ5261B-GS18 is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, and low-power regulation applications requiring stable component supply, consistent parametric performance, and full traceability from wafer to shipment.
Supply support for TZQ5261B-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, founded in 1962 and headquartered in Malvern, PA.
The TZQ52xxB series belongs to Vishay's precision small-signal Zener diode product line, engineered for high-stability voltage referencing in industrial, automotive, and test equipment where tight tolerance, low noise, and long-term reliability are mandatory.
FAQ
What is the exact zener voltage tolerance for TZQ5261B-GS18?
The TZQ5261B-GS18 has a nominal zener voltage of 47 V with a guaranteed tolerance of ±5 %, meaning the actual measured VZ at IZT = 2.7 mA falls between 44.65 V and 49.35 V under thermal equilibrium conditions per Vishay specification 85612 Rev. 2.0.
Does TZQ5261B-GS18 require derating above 25 °C ambient?
Yes - TZQ5261B-GS18 must be derated linearly above 25 °C ambient per its thermal characteristics: Ptot decreases by 1.0 mW/°C above 25 °C due to RthJA = 500 K/W, reaching zero dissipation at 525 °C (theoretical limit). Full 500 mW is only valid at Tamb ≤ 25 °C.
Is TZQ5261B-GS18 compatible with lead-free reflow soldering?
Yes - TZQ5261B-GS18 is qualified for lead-free reflow per J-STD-020: peak temperature 260 °C for 10 seconds at terminals, with MSL Level 1 rating ensuring unlimited floor life and no bake requirement prior to assembly.
What is the maximum reverse leakage current for TZQ5261B-GS18 at 40 V?
Per Vishay's electrical characteristics table, TZQ5261B-GS18 guarantees reverse leakage current IR < 0.1 μA when reverse voltage VR is applied at or below its rated VZ - specifically, IR is tested at VR = VZ − 1 V (i.e., 46 V), not 40 V. At 40 V, leakage is substantially lower and untested, but typically < 10 nA based on curve extrapolation.
Can TZQ5261B-GS18 be used in series for higher voltage references?
Yes - multiple TZQ5261B-GS18 devices may be connected in series to achieve higher reference voltages (e.g., two in series yield ~94 V), but mismatched temperature coefficients (+0.095 %/K each) and tolerance stacking (±5 % × √2 ≈ ±7.1 %) require careful calibration; parallel use is not recommended due to current-sharing instability.
TZQ5261B-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):
- 47 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 105 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 36 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
TZQ5261B-GS18 FAQ
1.How can I place an order for TZQ5261B-GS18 through Aetrix?
Please submit a Request for Quotation (RFQ) for TZQ5261B-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 TZQ5261B-GS18 reliable?
The price and inventory of TZQ5261B-GS18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TZQ5261B-GS18 is usually 5 days.
3.What payment methods are accepted for TZQ5261B-GS18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TZQ5261B-GS18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TZQ5261B-GS18?
TZQ5261B-GS18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TZQ5261B-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 TZQ5261B-GS18?
For technical support, including TZQ5261B-GS18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TZQ5261B-GS18 requirements.
6.How does Aetrix verify that TZQ5261B-GS18 is sourced from the original manufacturer or authorized distributors?
All TZQ5261B-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 TZQ5261B-GS18 meets industry standards.
7.What is the process for return or replacement of TZQ5261B-GS18?
All TZQ5261B-GS18 units undergo pre-shipment inspection (PSI). If there is an issue with TZQ5261B-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 TZQ5261B-GS18 part is unused and in its original packaging.
Return procedure for TZQ5261B-GS18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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