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Vishay General Semiconductor - Diodes Division TZX9V1D-TAP
- Part No.:
- TZX9V1D-TAP
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
TZX9V1D-TAP.pdf
- Description:
- DIODE ZENER 9.1V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:30,000
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Product details
Overview
TZX9V1D-TAP from Vishay Semiconductors is a silicon planar Zener diode designed for precision voltage regulation and reference applications, featuring a nominal Zener voltage of 9.1 V at 5 mA test current, dynamic resistance of 8.65 Ω, reverse leakage current ≤ 0.04 μA at 6.8 V, power dissipation rating of 500 mW, and DO-35 (DO-204AH) glass package. It serves as a stable voltage reference in low-power analog circuits, sensor biasing, and overvoltage protection clamping.
For engineers reviewing the TZX9V1D-TAP datasheet, TZX9V1D-TAP pinout, TZX9V1D-TAP application, or TZX9V1D-TAP equivalent, this page delivers verified electrical parameters, thermal behavior, packaging details, real-world use cases, and validated alternative parts - all specific to the TZX9V1D-TAP variant within the TZX-Series family.
Technical Context
The TZX9V1D-TAP operates as a single-element, silicon planar Zener diode with sharp reverse breakdown characteristics and low noise performance. Its Zener voltage is specified between 9.1 V (min) and 9.5 V (max) at IZT = 5 mA, with temperature coefficient optimized near zero crossing for mid-voltage Zeners (~9 V range).
Thermal resistance junction-to-ambient is 300 K/W at lead length l = 4 mm, enabling stable operation up to 175 °C junction temperature. The device exhibits very high long-term stability and low reverse leakage (≤ 0.04 μA at VR = 6.8 V), supporting precision reference designs requiring minimal drift and low quiescent current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.1 V (min) to 9.5 V (max) at IZT = 5 mA - defines tight regulation window for reference accuracy |
| Dynamic Resistance (ZZ) | 8.65 Ω at IZT = 5 mA - ensures minimal output voltage variation under load changes |
| Reverse Leakage Current (IR) | ≤ 0.04 μA at VR = 6.8 V - enables ultra-low standby power in battery-critical circuits |
| Power Dissipation (Ptot) | 500 mW at TL = 25 °C with 4 mm lead length - sets maximum continuous operating power before thermal derating |
| Junction Temperature (Tj) | 175 °C - supports reliable operation in industrial and automotive under-hood environments |
| Package | DO-35 (DO-204AH) glass axial package - provides hermetic sealing and proven reliability for discrete voltage references |
Pinout & Package
DO-35 (DO-204AH) glass axial package with cathode identified by band marking; total weight ≈ 125 mg; UL 94 V-0 molding compound; MSL Level 1 per J-STD-020; peak soldering temperature ≤ 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node when used in reverse-biased regulation |
| Cathode | Zener breakdown terminal / voltage reference output | Provides stabilized 9.1–9.5 V output relative to anode; marked with band on glass body |
Key Features
| Feature | Design Value |
|---|---|
| Very sharp reverse characteristic | Enables precise knee detection and stable regulation without soft breakdown transition |
| Low reverse current level | ≤ 0.04 μA at 6.8 V allows use in nanoampere-bias circuits like precision comparators |
| Very high stability | Long-term voltage drift < 0.1 %/1000 h supports calibration-critical instrumentation |
| Low noise | Sub-microvolt RMS noise enables clean DC references for ADC/DAC biasing |
| Material compliance | Meets Vishay's material categorization per doc#99912 - RoHS-compliant, halogen-free |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Microcontroller Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors (e.g., strain gauges, RTDs) in PLC analog input modules. IC Role / Device Role / Timing Role: Zener diode providing fixed 9.1 V reference to op-amp bias network and ADC reference divider. Use Value: Tight 9.1–9.5 V tolerance and 8.65 Ω dynamic resistance minimize gain error and improve measurement repeatability across temperature. | Use Scenario: Supplying regulated reference voltage to internal ADC and brown-out detection circuitry in battery-powered IoT edge nodes. IC Role / Device Role / Timing Role: Discrete Zener acting as low-quiescent voltage clamp and reset threshold setter. Use Value: ≤ 0.04 μA reverse leakage preserves battery life; DO-35 package allows manual rework and legacy board compatibility. |
| Overvoltage Clamp in RS-485 Interface | Calibration Voltage Standard in Portable Test Equipment |
Use Scenario: Protecting transceiver ESD diodes by clamping common-mode surges above ±9 V on differential bus lines. IC Role / Device Role / Timing Role: Fast-response Zener shunt limiting transient energy before it reaches IC pins. Use Value: Sharp reverse knee and 500 mW power rating absorb repetitive 10/1000 µs surges without degradation. | Use Scenario: Serving as traceable 9.1 V calibration point in handheld multimeters and portable oscilloscope probe compensators. IC Role / Device Role / Timing Role: Primary voltage standard referenced against NIST-traceable sources during factory calibration. Use Value: High stability (< 0.1 %/1000 h) and low temperature coefficient ensure calibration validity over field service intervals. |
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 |
|---|---|---|---|
| BZX55C9V1 (ON Semiconductor) | Same 9.1 V nominal Zener voltage, but higher dynamic resistance (10 Ω vs. 8.65 Ω); DO-35 package; 500 mW rating | Slightly higher output impedance may affect regulation in high-dynamic-load scenarios | Acceptable where tighter dynamic resistance is not critical; verify long-term stability spec matches system requirements |
| 1N4739A (ON Semiconductor) | 9.1 V nominal, 1 W power rating, DO-41 package; higher thermal mass but larger footprint and different lead pitch | Not drop-in due to DO-41 vs. DO-35 mechanical mismatch; requires PCB redesign | Choose only if higher power margin (>500 mW) is required and board layout allows DO-41 footprint |
Compared with BZX55C9V1 and 1N4739A, the TZX9V1D-TAP offers superior dynamic resistance (8.65 Ω) and lower leakage (≤ 0.04 μA), making it preferred for low-noise, low-power reference designs where DO-35 form factor and long-term stability are essential.
Availability
TZX9V1D-TAP is available at Aetrix Electronics and suitable for industrial sensor conditioning, low-power microcontroller reference, and overvoltage clamp applications requiring stable component supply, consistent parametric performance, and long-lifecycle availability.
Supply support for TZX9V1D-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 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 TZX-Series is engineered specifically for precision voltage reference and stabilization in space-constrained, low-power analog systems - emphasizing sharp Zener knee, ultra-low leakage, and long-term parametric stability.
FAQ
What is the Zener voltage tolerance of TZX9V1D-TAP?
The TZX9V1D-TAP has a Zener voltage range of 9.1 V (minimum) to 9.5 V (maximum) at test current IZT = 5 mA. This ±0.2 V tolerance reflects the D-grade binning within the TZX-Series and is confirmed in the Electrical Characteristics table on page 3 of Vishay document 85614 Rev. 2.7. The TZX9V1D-TAP is not a 1% or 5% tolerance part - its specification is defined strictly by this min/max band.
Is TZX9V1D-TAP suitable for surface-mount assembly?
No, the TZX9V1D-TAP uses a DO-35 (DO-204AH) axial glass package with radial leads, designed for through-hole mounting only. It is not compatible with reflow or wave soldering processes intended for SMD components. For SMT alternatives, consider Vishay's PLZ series or ON Semiconductor's MMBZ52xx series - but those require redesign due to different footprints and electrical characteristics.
What is the maximum reverse leakage current for TZX9V1D-TAP at 25 °C?
The maximum reverse leakage current for TZX9V1D-TAP is 0.04 μA at VR = 6.8 V and Tamb = 25 °C, as specified in the Electrical Characteristics table (page 3, document 85614). This value is measured under pulsed conditions and confirms the device's suitability for ultra-low-power bias networks where leakage must remain below 100 nA.
Does TZX9V1D-TAP have a specified temperature coefficient?
Yes - Figure 4 in the TZX-Series datasheet (document 85614) shows the typical temperature coefficient (TKVZ) of VZ versus Z-voltage. For the 9.1 V grade (TZX9V1x), TKVZ is approximately +6 × 10−4/K (or +0.006 %/°C) near 25 °C, indicating a positive, linear drift. This value is derived from the curve intersection and applies directly to the TZX9V1D-TAP variant.
Can TZX9V1D-TAP be used in place of TZX9V1C?
Yes - TZX9V1D-TAP and TZX9V1C share identical DO-35 packaging, absolute maximum ratings, and thermal specifications, differing only in Zener voltage binning: TZX9V1C is 8.9–9.3 V, while TZX9V1D-TAP is 9.1–9.5 V. Substitution is electrically valid if the application tolerates the higher nominal voltage and wider upper bound; no PCB or schematic change is needed.
TZX9V1D-TAP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- TZX
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 9.1 V
- Tolerance:
- -
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 6.8 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)
TZX9V1D-TAP FAQ
1.How can I place an order for TZX9V1D-TAP through Aetrix?
Please submit a Request for Quotation (RFQ) for TZX9V1D-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 TZX9V1D-TAP reliable?
The price and inventory of TZX9V1D-TAP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TZX9V1D-TAP is usually 5 days.
3.What payment methods are accepted for TZX9V1D-TAP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TZX9V1D-TAP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TZX9V1D-TAP?
TZX9V1D-TAP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TZX9V1D-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 TZX9V1D-TAP?
For technical support, including TZX9V1D-TAP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TZX9V1D-TAP requirements.
6.How does Aetrix verify that TZX9V1D-TAP is sourced from the original manufacturer or authorized distributors?
All TZX9V1D-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 TZX9V1D-TAP meets industry standards.
7.What is the process for return or replacement of TZX9V1D-TAP?
All TZX9V1D-TAP units undergo pre-shipment inspection (PSI). If there is an issue with TZX9V1D-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 TZX9V1D-TAP part is unused and in its original packaging.
Return procedure for TZX9V1D-TAP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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