My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TZQ5262B-GS18
- Part No.:
- TZQ5262B-GS18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- SOD-80 Variant
- Datasheet:
-
TZQ5262B-GS18.pdf
- Description:
- DIODE ZENER 51V 500MW SOD80
- Quantity:
- Payment:
- Shipping:
Inventory:6,401
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TZQ5262B-GS18 from Vishay Semiconductors is a precision small-signal Zener diode with nominal zener voltage of 51 V, ±5 % tolerance, 2.5 mA test current (IZT), <0.1 μA reverse leakage at VR = 39 V, and dynamic resistance of <125 Ω - designed for stable voltage reference and regulation in low-power analog circuits.
For engineers reviewing the TZQ5262B-GS18 datasheet, TZQ5262B-GS18 pinout, TZQ5262B-GS18 application, or TZQ5262B-GS18 equivalent, key selection criteria include zener voltage accuracy, temperature coefficient (+0.096 %/K), thermal stability up to 175 °C junction temperature, and QuadroMELF SOD-80 package suitability for high-reliability surface-mount designs.
Technical Context
This device operates as a two-terminal voltage reference, relying on controlled avalanche breakdown in silicon to maintain stable reverse-bias voltage under varying load and temperature conditions. Its design targets DC stabilization rather than transient suppression or ESD protection.
The TZQ5262B-GS18 exhibits a positive temperature coefficient of +0.096 %/K and is characterized at thermal equilibrium with case temperature held at 30 °C ± 2 °C. It delivers specified performance within its absolute maximum ratings: 500 mW total power dissipation, 175 °C max junction temperature, and -65 to +175 °C storage range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 51 V nominal, ±5 % tolerance - ensures predictable clamping/reference level in feedback loops and reference dividers. |
| Test Current (IZT) | 2.5 mA - defines the operating point where VZ and dynamic resistance are guaranteed per spec. |
| Dynamic Resistance (ZZ) | <125 Ω at IZT - limits output impedance variation under small-signal AC load changes. |
| Reverse Leakage (IR) | <0.1 μA at VR = 39 V - minimizes parasitic current draw in high-impedance bias networks. |
| Temperature Coefficient (TKVZ) | +0.096 %/K - quantifies VZ drift with junction temperature; enables accurate thermal error budgeting. |
| Power Dissipation (Ptot) | 500 mW - sets maximum continuous DC power handling on standard PCB layout (50 mm × 50 mm × 1.6 mm). |
| Junction Temperature (Tj) | 175 °C max - supports operation in industrial and automotive under-hood environments. |
Pinout & Package
Package: QuadroMELF (SOD-80) - cylindrical glass-body surface-mount package with cathode identification band; approx. 34 mg weight; UL 94 V-0 molding compound; MSL Level 1 (unlimited floor life).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / reference ground node | Connected to lower-potential side in reverse-bias configuration; carries forward current up to 200 mA (VF ≤ 1.5 V). |
| Cathode | Zener breakdown terminal / regulated output node | Marked by colored band; supplies stable 51 V reference when reverse-biased above breakdown threshold. |
Key Features
| Feature | Design Value |
|---|---|
| Very sharp reverse characteristic | Enables precise voltage clamping with minimal knee voltage spread - critical for tight-tolerance reference circuits. |
| Low reverse leakage current | <0.1 μA at 39 V allows use in ultra-low-power sensor biasing and battery-operated voltage monitors. |
| High stability over temperature | +0.096 %/K TC and 175 °C max Tj support long-term calibration retention in industrial control modules. |
| Low noise performance | Minimizes voltage reference jitter in precision ADC/DAC reference chains and analog front-ends. |
| UL 94 V-0 flame-retardant molding | Meets safety requirements for enclosed power supplies and medical instrumentation enclosures. |
Applications
| Industrial Sensor Signal Conditioning | Programmable Logic Controller (PLC) Input Protection |
|---|---|
|
Use Scenario: Stabilizing reference voltage for 4–20 mA loop-powered temperature transmitters operating in ambient temperatures from -40 °C to +85 °C. IC Role / Device Role / Timing Role: Two-terminal voltage reference providing fixed 51 V bias for op-amp gain-setting networks and current-source compliance. Use Value: Maintains <±0.5 % reference accuracy across temperature due to +0.096 %/K TC and low thermal resistance (RthJA = 500 K/W). |
Use Scenario: Overvoltage protection and input-level translation for 24 V DC digital inputs in modular PLC backplanes exposed to field wiring transients. IC Role / Device Role / Timing Role: Zener clamp limiting input voltage to safe levels for downstream optocouplers and Schmitt triggers. Use Value: Withstands repetitive 500 mW surge pulses and maintains <0.1 μA leakage to avoid false triggering in high-impedance input stages. |
| Medical Instrumentation Power Rails | Automotive Body Control Module (BCM) Reference |
|
Use Scenario: Providing isolated, low-noise 51 V reference for photodiode biasing in portable blood oximeters and ECG front-end amplifiers. IC Role / Device Role / Timing Role: Low-noise voltage reference enabling sub-microvolt signal integrity in analog signal chains. Use Value: Ultra-low noise and <125 Ω dynamic resistance minimize baseline drift and improve SNR in low-current sensing paths. |
Use Scenario: Regulating auxiliary 51 V supply rail for LIN bus transceivers and LED driver ICs in BCMs operating under wide battery voltage swings (9–16 V). IC Role / Device Role / Timing Role: Precision shunt regulator maintaining stable rail despite load transients and thermal cycling. Use Value: Stable 51 V output with ±5 % tolerance and 175 °C max Tj ensures functional safety compliance in under-dash 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-C51 (ON Semiconductor) | Same 51 V nominal, ±5 % tolerance, but higher ZZ (~150 Ω) and higher IR (~1 μA at 39 V); DO-35 package. | Larger DO-35 footprint; less suitable for high-density SMT layouts requiring QuadroMELF reliability. | Select TZQ5262B-GS18 for space-constrained, high-stability SMT designs; choose BZX55-C51 only if legacy through-hole compatibility is required. |
| MMBZ5262B (Diodes Inc.) | Same 51 V, ±5 %, but SOT-23 package; higher IR (≤1 μA), higher ZZ (~140 Ω), and lower Ptot (350 mW). | SOT-23 offers smaller footprint but reduced power handling and thermal robustness vs. QuadroMELF. | Prefer TZQ5262B-GS18 for applications demanding >400 mW continuous dissipation or extended temperature operation beyond 150 °C. |
Compared with BZX55-C51 and MMBZ5262B, the TZQ5262B-GS18 provides superior thermal stability (175 °C Tj), lower leakage (<0.1 μA), and lower dynamic resistance (<125 Ω) in a rugged, MSL Level 1 QuadroMELF package - making it optimal for industrial and automotive voltage reference nodes where long-term drift and reliability are critical.
Availability
TZQ5262B-GS18 is available at Aetrix Electronics and suitable for industrial sensor conditioning, PLC input protection, medical instrumentation power rails, and automotive body control module reference applications requiring stable component supply and full traceability.
Supply support for TZQ5262B-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 semiconductor manufacturer specializing in discrete components, sensors, and passive elements, with emphasis on reliability, precision, and high-temperature performance.
The TZQ5262B-GS18 belongs to Vishay's TZQ52xxB series of small-signal Zener diodes, engineered for high-stability DC voltage reference and regulation in industrial, medical, and automotive systems where low noise, tight tolerance, and thermal resilience are essential.
FAQ
What is the nominal zener voltage and tolerance of TZQ5262B-GS18?
The TZQ5262B-GS18 has a nominal zener voltage of 51 V with a tolerance of ±5 %, measured at 2.5 mA test current under thermal equilibrium conditions. This specification ensures consistent voltage regulation across production lots and supports accurate design margining in feedback networks and reference dividers.
What package type does TZQ5262B-GS18 use, and what are its key mechanical features?
The TZQ5262B-GS18 uses the QuadroMELF (SOD-80) package - a cylindrical glass-body surface-mount device with cathode identification band, ~3.7 mm length, ~1.6 mm diameter, and UL 94 V-0 flame-retardant molding compound. Its MSL Level 1 rating allows unlimited floor life before reflow.
What is the maximum junction temperature and power dissipation rating for TZQ5262B-GS18?
The TZQ5262B-GS18 has a maximum junction temperature of 175 °C and a total power dissipation rating of 500 mW at Tamb = 25 °C with RthJA ≤ 300 K/W. On a standard 50 mm × 50 mm × 1.6 mm PCB, RthJA is 500 K/W, reducing usable power at elevated ambient temperatures per the derating curve in Figure 1.
How does the temperature coefficient of TZQ5262B-GS18 affect its voltage stability?
The TZQ5262B-GS18 has a temperature coefficient of +0.096 %/K, meaning its zener voltage increases by approximately 48.96 mV per 1 °C rise in junction temperature. This positive TC enables predictable drift compensation in multi-diode reference designs and must be included in thermal error budgets for precision applications.
Is TZQ5262B-GS18 suitable for low-noise analog reference applications?
Yes - the TZQ5262B-GS18 is explicitly characterized for low noise performance and is recommended for precision analog circuits including ADC/DAC references and sensor biasing. Its low dynamic resistance (<125 Ω) and sharp reverse breakdown contribute to minimal voltage fluctuation under small-signal AC loads, directly supporting high-SNR system design.
TZQ5262B-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):
- 51 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 125 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 39 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
TZQ5262B-GS18 FAQ
1.How can I place an order for TZQ5262B-GS18 through Aetrix?
Please submit a Request for Quotation (RFQ) for TZQ5262B-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 TZQ5262B-GS18 reliable?
The price and inventory of TZQ5262B-GS18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TZQ5262B-GS18 is usually 5 days.
3.What payment methods are accepted for TZQ5262B-GS18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TZQ5262B-GS18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TZQ5262B-GS18?
TZQ5262B-GS18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TZQ5262B-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 TZQ5262B-GS18?
For technical support, including TZQ5262B-GS18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TZQ5262B-GS18 requirements.
6.How does Aetrix verify that TZQ5262B-GS18 is sourced from the original manufacturer or authorized distributors?
All TZQ5262B-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 TZQ5262B-GS18 meets industry standards.
7.What is the process for return or replacement of TZQ5262B-GS18?
All TZQ5262B-GS18 units undergo pre-shipment inspection (PSI). If there is an issue with TZQ5262B-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 TZQ5262B-GS18 part is unused and in its original packaging.
Return procedure for TZQ5262B-GS18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TZQ5262B-GS18 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 …
