My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TZM5222B-GS08
- Part No.:
- TZM5222B-GS08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-213AC, MINI-MELF, SOD-80
- Datasheet:
-
TZM5222B-GS08.pdf
- Description:
- DIODE ZENER 2.5V 500MW SOD80
- Quantity:
- Payment:
- Shipping:
Inventory:43,865
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TZM5222B-GS08 from Vishay Semiconductors is a 2.5 V, ±5 % tolerance small-signal Zener diode in MiniMELF (SOD-80) package, rated for 500 mW power dissipation and 20 mA test current, used for precision voltage reference and stabilization in low-power analog circuits.
For engineers reviewing the TZM5222B-GS08 datasheet, TZM5222B-GS08 pinout, TZM5222B-GS08 application, or TZM5222B-GS08 equivalent, key selection criteria include Zener voltage accuracy, dynamic resistance (<30 Ω), temperature coefficient (< −0.085 %/K), low reverse leakage (<100 μA at VR), and MiniMELF thermal performance under DC bias.
Technical Context
This device operates as a single-element, silicon planar Zener diode with sharp reverse breakdown and high stability under DC conditions at thermal equilibrium. Its electrical behavior is defined at 25 °C ambient, with Zener voltage specified at IZT = 20 mA and reverse leakage measured at VR = 1 V.
The TZM5222B-GS08 exhibits a negative temperature coefficient of < −0.085 %/K and dynamic impedance of <30 Ω at 1 kHz, enabling stable regulation in temperature-sensitive reference designs. It shares identical electrical data with the legacy 1N5222B series but uses MiniMELF packaging for improved thermal resistance (RthJA = 500 K/W on PCB).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.5 V nominal, ±5 % tolerance - ensures predictable clamping level in reference and protection circuits |
| Test Current (IZT) | 20 mA - defines operating point where VZ and dynamic resistance are guaranteed |
| Power Dissipation (Ptot) | 500 mW - maximum continuous DC power handling at Tamb = 25 °C |
| Dynamic Resistance (ZZ) | <30 Ω at 1 kHz - minimizes output voltage variation under load transients |
| Reverse Leakage (IR) | <100 μA at VR = 1 V - enables low-quiescent-current biasing in precision circuits |
| Temperature Coefficient (TKVZ) | < −0.085 %/K - supports stable regulation over industrial temperature range |
| Junction Temperature (Tj) | 175 °C max - allows operation in thermally constrained environments |
Pinout & Package
MiniMELF (SOD-80) glass-metal package with axial leads; cathode identified by a band/indent on the glass body. Total weight ≈31 mg; UL 94 V-0 molding compound; MSL Level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node during Zener operation |
| Cathode | Zener breakdown terminal / voltage reference output | Provides stabilized 2.5 V output relative to anode when reverse-biased above VZ |
Key Features
| Feature | Design Value |
|---|---|
| Very sharp reverse characteristic | Enables precise, low-hysteresis voltage clamping near 2.5 V without soft knee transition |
| High stability under thermal equilibrium | Maintains ±5 % VZ tolerance across life cycle and after thermal cycling due to planar junction design |
| Low reverse leakage current | <100 μA at 1 V reverse bias reduces error in high-impedance reference dividers |
| Matched to 1N5222B electrical specs | Direct drop-in functional replacement for legacy through-hole 1N5222B in new MiniMELF layouts |
| MSL Level 1 handling | Unlimited floor life and reflow-compatible up to 260 °C peak - simplifies SMT assembly |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Microcontroller Voltage Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Zener reference source providing 2.5 V bias to Wheatstone bridge, decoupled from supply rail fluctuations. Use Value: Enables sub-0.5 % full-scale measurement accuracy despite ±10 % VCC variation and 0–70 °C ambient range. |
Use Scenario: Supplying precise reference to internal ADC of ultra-low-power MCU in battery-operated IoT nodes. IC Role / Device Role / Timing Role: External voltage reference replacing internal bandgap to improve ADC ENOB by ≥1.5 bits. Use Value: Delivers 2.5 V ±0.125 V over temperature, reducing ADC quantization error without increasing quiescent current. |
| USB-C Power Negotiation Clamp | ESD-Protected Analog Front-End Bias |
Use Scenario: Clamping CC line voltage during USB PD communication to prevent controller overvoltage. IC Role / Device Role / Timing Role: Fast-response Zener clamp limiting CC pin to 2.5 V during fault or hot-plug events. Use Value: Prevents damage to USB PD controller GPIO while maintaining signal integrity below 300 ns response time. |
Use Scenario: Biasing op-amp input stage in medical-grade ECG front-end exposed to IEC 61000-4-2 ESD pulses. IC Role / Device Role / Timing Role: Low-leakage Zener establishing stable common-mode voltage for differential amplifiers. Use Value: Maintains 2.5 V reference within ±10 mV during 8 kV contact discharge, preserving baseline stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5222B | Same 2.5 V ±5 % VZ, but in DO-35 glass axial package; higher RthJA (~600 K/W); no MSL rating | Legacy through-hole assembly only; unsuitable for automated SMT or high-density PCBs | Select 1N5222B only for hand-soldered repairs or legacy board rework where MiniMELF footprint is unavailable |
| BZX55C2V4 | 2.4 V nominal (−4 % deviation from TZM5222B); ±5 % tolerance; DO-35 package; ZZ ≈ 40 Ω | Lower voltage drift in low-temp environments but higher dynamic impedance degrades transient rejection | Choose BZX55C2V4 only if system-level calibration accommodates 0.1 V offset and reduced regulation stiffness is acceptable |
Compared with 1N5222B and BZX55C2V4, the TZM5222B-GS08 delivers superior thermal performance in SMT layouts, tighter low-current regulation stability, and guaranteed MSL-1 compatibility-making it optimal for new industrial and portable designs requiring long-term voltage reference integrity.
Availability
TZM5222B-GS08 is available at Aetrix Electronics and suitable for industrial sensor conditioning, low-power microcontroller reference, USB-C power negotiation, and ESD-protected analog front-end designs requiring stable component supply and consistent MiniMELF form factor.
Supply support for TZM5222B-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 Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for industrial, automotive, and computing markets.
The TZM5222B-GS08 belongs to Vishay's MiniMELF Zener family, engineered to replace legacy DO-35 devices with enhanced thermal performance, SMT compatibility, and tighter parametric consistency for precision analog reference applications.
FAQ
What is the Zener voltage tolerance and test condition for TZM5222B-GS08?
The TZM5222B-GS08 has a nominal Zener voltage of 2.5 V with a tolerance of ±5 %, specified at a test current (IZT) of 20 mA under thermal equilibrium conditions. This tolerance ensures predictable clamping behavior in voltage reference and regulation circuits across manufacturing lots and operating temperatures.
Is TZM5222B-GS08 compatible with lead-free reflow soldering processes?
Yes, TZM5222B-GS08 is qualified for lead-free reflow with a peak temperature rating of 260 °C and meets MSL Level 1 per J-STD-020. Its MiniMELF (SOD-80) package uses UL 94 V-0 compliant molding compound, enabling robust performance in standard Pb-free SMT assembly lines without preconditioning.
How does the dynamic resistance of TZM5222B-GS08 affect its regulation performance?
The TZM5222B-GS08 has a dynamic resistance of <30 Ω at 1 kHz and 20 mA, which directly determines how tightly it maintains 2.5 V under varying load currents. Lower ZZ minimizes output voltage deviation during transient load changes-critical for ADC references and precision bias networks where stability below ±10 mV is required.
Can TZM5222B-GS08 replace 1N5222B in existing designs?
TZM5222B-GS08 matches the electrical specifications of 1N5222B but uses a MiniMELF (SOD-80) package instead of DO-35. While not pin-to-pin compatible due to different footprints, it serves as a functional upgrade for new designs-offering better thermal resistance, MSL-1 compliance, and SMT manufacturability. Board redesign is required for direct substitution.
What is the maximum reverse leakage current for TZM5222B-GS08 at 1 V?
The maximum reverse leakage current (IR) for TZM5222B-GS08 is <100 μA when measured at VR = 1 V, per the Vishay datasheet. This low leakage supports high-impedance biasing applications such as op-amp reference dividers and sensor excitation circuits where current draw must remain below 0.1 mA.
TZM5222B-GS08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-213AC, MINI-MELF, SOD-80
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.5 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 100 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-80 MiniMELF
TZM5222B-GS08 FAQ
1.How can I place an order for TZM5222B-GS08 through Aetrix?
Please submit a Request for Quotation (RFQ) for TZM5222B-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 TZM5222B-GS08 reliable?
The price and inventory of TZM5222B-GS08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TZM5222B-GS08 is usually 5 days.
3.What payment methods are accepted for TZM5222B-GS08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TZM5222B-GS08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TZM5222B-GS08?
TZM5222B-GS08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TZM5222B-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 TZM5222B-GS08?
For technical support, including TZM5222B-GS08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TZM5222B-GS08 requirements.
6.How does Aetrix verify that TZM5222B-GS08 is sourced from the original manufacturer or authorized distributors?
All TZM5222B-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 TZM5222B-GS08 meets industry standards.
7.What is the process for return or replacement of TZM5222B-GS08?
All TZM5222B-GS08 units undergo pre-shipment inspection (PSI). If there is an issue with TZM5222B-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 TZM5222B-GS08 part is unused and in its original packaging.
Return procedure for TZM5222B-GS08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TZM5222B-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 …
