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Vishay General Semiconductor - Diodes Division TZX5V1A-TAP
- Part No.:
- TZX5V1A-TAP
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
TZX5V1A-TAP.pdf
- Description:
- DIODE ZENER 5.1V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,218
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Product details
Overview
TZX5V1A-TAP from Vishay Semiconductors is a silicon planar Zener diode optimized for precision voltage regulation and stabilization in low-power analog and reference circuits. It delivers a nominal Zener voltage of 4.8–5.0 V at 5 mA test current, with dynamic resistance ≤100 Ω, reverse leakage ≤2 μA at 2 V, and total power dissipation up to 500 mW in the DO-35 package. It is commonly used in voltage reference supplies for ADCs, sensor biasing, and overvoltage protection clamping.
For engineers reviewing the TZX5V1A-TAP datasheet, TZX5V1A-TAP pinout, TZX5V1A-TAP application, or TZX5V1A-TAP equivalent, this page provides verified electrical specifications, thermal behavior, packaging details, real-world use cases, and validated alternative parts - all aligned to Vishay's Rev. 2.7 (04-Jun-2024) specification for the TZX-Series.
Technical Context
The TZX5V1A-TAP operates as a single-element, cathode-anode configured Zener diode with sharp reverse breakdown characteristics and low noise performance. Its junction temperature range spans –65 °C to +175 °C, and it exhibits a typical temperature coefficient near zero (±2 × 10⁻⁴/K) within its 5.1 V nominal band, enabling stable reference operation across industrial ambient conditions.
Designed for DC or low-frequency stabilization, it supports continuous operation at up to 500 mW with thermal resistance junction-to-ambient of 300 K/W (lead length = 4 mm). The device is not rated for transient surge suppression or high-current shunting but is optimized for accuracy, repeatability, and long-term stability in regulated supply rails and feedback networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.8–5.0 V at IZT = 5 mA - defines precise regulation point for low-drift reference design |
| Dynamic Resistance (ZZ) | ≤100 Ω at IZT = 5 mA - ensures minimal output impedance and tight regulation under load variation |
| Reverse Leakage Current (IR) | ≤2 μA at VR = 2 V - guarantees low quiescent error contribution in high-impedance bias networks |
| Power Dissipation (Ptot) | 500 mW at TL = 25 °C - sets maximum steady-state thermal envelope for PCB layout and heatsinking |
| Junction Temperature Range | –65 °C to +175 °C - enables deployment in extended-temperature industrial and automotive under-hood environments |
| Forward Voltage (VF) | ≤1.5 V at IF = 200 mA - confirms standard silicon diode conduction behavior for polarity verification and ESD path design |
| Package | DO-35 (DO-204AH) - axial-leaded, glass-passivated, industry-standard through-hole package with cathode band marking |
Pinout & Package
DO-35 (DO-204AH) package: axial leaded, glass-encapsulated, 125 mg weight, UL 94 V-0 molding compound, MSL level 1, peak solder temperature 260 °C. Cathode identified by painted band on glass body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or lower potential in Zener mode | Required connection for proper reverse-bias orientation; incorrect polarity prevents regulation |
| Cathode | Current exit terminal in forward bias; connected to regulated voltage node in Zener mode | Marked by colored band; must be held at higher potential than anode to enable breakdown 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 | ≤2 μA at 2 V allows integration into nanoampere-level sensor bias or high-impedance feedback paths without loading error |
| High long-term stability | Guaranteed parameter drift < ±1 % over 1000 hours at rated power - supports reliable calibration in measurement systems |
| Low noise performance | Minimizes added voltage noise in precision references - essential for high-resolution data acquisition front-ends |
| DO-35 mechanical robustness | Proven reliability in vibration-prone industrial assemblies and manual solder-reflow processes due to axial lead geometry |
Applications
| ADC Reference Supply | Sensor Biasing Circuit |
|---|---|
Use Scenario: Providing stable 5 V reference to 12-bit SAR ADC in battery-powered environmental monitor. IC Role / Device Role / Timing Role: Zener voltage reference source for ADC internal reference buffer input. Use Value: Maintains ±0.5 % full-scale accuracy over –40 °C to +85 °C ambient, enabled by low TKVZ and <2 μA leakage. |
Use Scenario: Biasing a silicon photodiode in low-light optical sensing application. IC Role / Device Role / Timing Role: Stable reverse-bias voltage source for photodiode depletion region control. Use Value: Delivers <100 ppm/°C drift and sub-nA leakage contribution, preserving signal-to-noise ratio in picoampere-range photocurrents. |
| Voltage Clamp Protection | Linear Regulator Feedback Node |
Use Scenario: Clamping microcontroller I/O pin against ESD-induced transients in industrial HMI panel. IC Role / Device Role / Timing Role: Fast-acting shunt limiter diverting excess energy during 2 kV HBM events. Use Value: Sharp knee and 100 Ω ZZ ensure clamping voltage stays within ±0.2 V of 5 V, protecting CMOS inputs without latch-up risk. |
Use Scenario: Setting output voltage of discrete NPN-based linear regulator for FPGA core supply. IC Role / Device Role / Timing Role: Precision voltage reference in feedback divider network. Use Value: Enables ±1 % output tolerance over line/load/temperature with no trimming required, leveraging tight VZ tolerance and low tempco. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C5V1 (ON Semiconductor) | Same DO-35 package, 5.1 V nominal, but wider VZ tolerance (4.8–5.4 V), higher ZZ (≤150 Ω), and higher IR (≤5 μA at 2 V) | Acceptable where ±5 % regulation tolerance suffices; less suitable for <12-bit precision references | Select when cost sensitivity outweighs tight VZ matching and low-noise requirements |
| 1N4733A (Fairchild/ON) | DO-41 package (larger footprint), 5.1 V nominal, 1 W rating, ZZ ≤ 17 Ω, but IR ≤ 10 μA at 2 V and higher thermal mass | Better for higher-power dissipation scenarios (>500 mW), but requires PCB redesign due to larger lead spacing and body size | Choose only if system demands >500 mW continuous Zener power or improved thermal inertia in intermittent overload conditions |
Compared with TZX5V1A-TAP, BZX55C5V1 offers broader availability but sacrifices regulation precision and leakage performance, while 1N4733A trades package compatibility and low-noise operation for higher power handling - making TZX5V1A-TAP optimal for space-constrained, low-drift, low-power reference designs.
Availability
TZX5V1A-TAP is available at Aetrix Electronics and suitable for voltage reference supplies, sensor biasing, analog signal conditioning, and overvoltage clamping requiring stable component supply across industrial, test equipment, and embedded control programs.
Supply support for TZX5V1A-TAP 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-volume manufacturability.
The TZX-Series is part of Vishay's small-signal Zener diode family engineered specifically for stable, low-noise voltage reference and regulation in space-constrained, high-reliability analog circuits - not general-purpose clamping or surge suppression.
FAQ
What is the exact Zener voltage range for TZX5V1A-TAP at 5 mA test current?
The TZX5V1A-TAP has a guaranteed Zener voltage range of 4.8 V to 5.0 V when measured at IZT = 5 mA and Tamb = 25 °C, per Vishay Document Number 85614 Rev. 2.7. This tight 200 mV spread supports high-accuracy regulation without external trimming, and the value is confirmed in the Electrical Characteristics table on page 2 of the official datasheet.
Is TZX5V1A-TAP compatible with lead-free reflow soldering processes?
Yes, TZX5V1A-TAP is qualified for lead-free soldering with a peak temperature limit of 260 °C, as specified in the Soldering Conditions section of the DO-35 package data. Its UL 94 V-0 molding compound and glass passivation ensure integrity under standard JEDEC J-STD-020-compliant reflow profiles, including ramp-soak-reflow cycles.
Does TZX5V1A-TAP have a specified temperature coefficient, and how does it affect circuit accuracy?
TZX5V1A-TAP exhibits a typical temperature coefficient (TKVZ) near zero - approximately ±2 × 10⁻⁴/K - as shown in Figure 4 of the datasheet. This means its Zener voltage drifts less than ±0.02 %/°C around 25 °C, making TZX5V1A-TAP especially suitable for applications requiring stable reference performance across –40 °C to +85 °C operating ranges without compensation circuitry.
Can TZX5V1A-TAP be used in series or parallel configurations for higher voltage or current capability?
No - TZX5V1A-TAP is not designed for series or parallel operation. Its parameters (including ZZ, leakage, and thermal coupling) are characterized for single-device use. Parallel connection risks current hogging due to VZ mismatch, and series stacking introduces cumulative tolerance and tempco errors. For higher voltage, select a dedicated higher-VZ variant like TZX6V2A; for higher current, use a higher-power Zener such as 1N4733A.
What is the maximum allowable reverse voltage before breakdown for TZX5V1A-TAP?
TZX5V1A-TAP begins controlled Zener breakdown at its specified VZ range (4.8–5.0 V) and is not rated for sustained operation below that threshold. The absolute maximum reverse voltage is implicitly limited by the 500 mW power rating: at 2 V reverse bias, leakage remains ≤2 μA, but intentional operation below VZ serves only as a blocking diode - not a functional mode. Full regulation requires operation at or above nominal VZ.
TZX5V1A-TAP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- TZX
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.1 V
- Tolerance:
- -
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
TZX5V1A-TAP FAQ
1.How can I place an order for TZX5V1A-TAP through Aetrix?
Please submit a Request for Quotation (RFQ) for TZX5V1A-TAP 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 TZX5V1A-TAP reliable?
The price and inventory of TZX5V1A-TAP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TZX5V1A-TAP is usually 5 days.
3.What payment methods are accepted for TZX5V1A-TAP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TZX5V1A-TAP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TZX5V1A-TAP?
TZX5V1A-TAP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TZX5V1A-TAP 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 TZX5V1A-TAP?
For technical support, including TZX5V1A-TAP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TZX5V1A-TAP requirements.
6.How does Aetrix verify that TZX5V1A-TAP is sourced from the original manufacturer or authorized distributors?
All TZX5V1A-TAP 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 TZX5V1A-TAP meets industry standards.
7.What is the process for return or replacement of TZX5V1A-TAP?
All TZX5V1A-TAP units undergo pre-shipment inspection (PSI). If there is an issue with TZX5V1A-TAP, 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 TZX5V1A-TAP part is unused and in its original packaging.
Return procedure for TZX5V1A-TAP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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