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Vishay General Semiconductor - Diodes Division ZPY8V2-TR
- Part No.:
- ZPY8V2-TR
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
ZPY8V2-TR.pdf
- Description:
- DIODE ZENER 8.2V 1.3W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:24,848
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Product details
Overview
ZPY8V2-TR from Vishay Semiconductors is a silicon planar power Zener diode in DO-41 (DO-204AL) package, designed for voltage regulation and overvoltage protection in high-power stabilizing and clipping circuits. Its nominal Zener voltage is 8.2 V at 100 mA test current, with dynamic resistance of 127 Ω at 1 kHz, ±0.5 V reverse voltage rating, and maximum power dissipation of 1300 mW at 25 °C ambient.
For engineers reviewing the ZPY8V2-TR datasheet, ZPY8V2-TR pinout, ZPY8V2-TR application, or ZPY8V2-TR equivalent, key selection criteria include its 7.7–8.7 V Zener voltage range, 100 mA test current requirement, 127 Ω dynamic impedance, -55 to +175 °C storage temperature range, and DO-41 package compatibility with through-hole PCB assembly.
Technical Context
The ZPY8V2-TR operates as a single-element, unidirectional voltage reference device with sharp reverse breakdown characteristics. It is rated for pulse operation (tp = 10 ms) and requires lead-to-ambient thermal management-specifically, leads held at ambient temperature at 4 mm from case-to maintain its 1300 mW power rating and 110 K/W junction-to-ambient thermal resistance.
Its temperature coefficient of Zener voltage is +3 × 10⁻⁴/°C at 100 mA, indicating positive drift with rising temperature-a critical factor in precision reference designs. The device exhibits typical reverse leakage < 0.5 μA at VR = 6.0 V and supports admissible Zener current up to 1 A (pulsed), validated per Vishay's absolute maximum ratings table.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.7–8.7 V nominal 8.2 V at IZT = 100 mA - defines stable regulation window under standard test conditions |
| Dynamic Resistance (ZZ) | 127 Ω at f = 1 kHz - determines output impedance and regulation sensitivity to load current changes |
| Power Dissipation (Ptot) | 1300 mW at Tamb = 25 °C with leads at ambient - sets maximum continuous DC or pulsed power handling |
| Junction Temperature (Tj) | 175 °C maximum - constrains thermal design margin and derating curve above 25 °C ambient |
| Reverse Leakage (IR) | < 0.5 μA at VR = 6.0 V - ensures low standby current in clamping or standby-bias applications |
| Temperature Coefficient (TCVZ) | +3 × 10⁻⁴/°C at IZT = 100 mA - quantifies voltage drift per degree, critical for temperature-stable references |
| Package | DO-41 (DO-204AL) - industry-standard axial-leaded through-hole package with cathode band marking |
Pinout & Package
DO-41 (DO-204AL) package: axial-leaded, glass-passivated silicon planar construction; cathode identified by a single black band near one end; total length ≈ 26 mm, body diameter ≈ 2.6 mm, lead diameter ≈ 0.86 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection in Zener mode | Connected to lower potential node; carries forward current or sinks Zener current when cathode is biased higher |
| Cathode | Zener breakdown terminal / high-side connection in regulation mode | Biased positive relative to anode to activate reverse breakdown; serves as regulated output node in shunt regulator topologies |
Key Features
| Feature | Design Value |
|---|---|
| Silicon planar construction | Enables tight VZ tolerance (±0.5 V), stable long-term performance, and repeatable breakdown characteristics |
| 1300 mW power rating | Supports high-energy transient suppression and continuous shunt regulation in industrial power supplies |
| DO-41 package with MSL Level 1 | Allows standard through-hole reflow or wave soldering without moisture preconditioning |
| +3 × 10⁻⁴/°C TCVZ | Enables predictable voltage drift compensation in temperature-critical analog reference circuits |
| E12-standard Zener grading | Ensures interoperability with legacy designs and simplifies BOM consolidation across 3.9–75 V range |
Applications
| Industrial Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
|
Use Scenario: Stabilizing auxiliary bias rails in AC/DC converters and isolated DC/DC modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 8.2 V reference for error amplifiers or supervisor ICs. Use Value: Maintains regulation accuracy within ±0.5 V across 0–100 mA load range, supporting stable feedback loop operation. |
Use Scenario: Clamping input transients on microcontroller I/O lines exposed to ESD or inductive kickback. IC Role / Device Role / Timing Role: Fast-acting crowbar element diverting surge current away from sensitive logic inputs. Use Value: Limits voltage to ≤8.7 V during 10 ms pulses, protecting against >2 kV HBM ESD events per system-level requirements. |
| Automotive Sensor Signal Conditioning | Programmable Current Source Reference |
|
Use Scenario: Providing stable excitation voltage for resistive temperature sensors (RTDs) in engine control units. IC Role / Device Role / Timing Role: Precision Zener reference feeding constant-current generator circuitry. Use Value: Delivers 8.2 V ±0.5 V with +3 × 10⁻⁴/°C drift, enabling <±1 °C temperature measurement accuracy over -40 to +125 °C. |
Use Scenario: Setting reference voltage for op-amp-based Howland current sources driving LED arrays or solenoids. IC Role / Device Role / Timing Role: Fixed-voltage node defining compliance limit and current setpoint via resistor ratio. Use Value: Enables 1% current accuracy with 127 Ω dynamic resistance limiting load-induced voltage sag under 50 mA step loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4738A-T | Nominal VZ = 8.2 V, Ptot = 1000 mW, ZZ = 7 Ω (at 20 mA), DO-41 package | Lower power rating and tighter ZZ suit low-current references; not rated for 100 mA continuous Zener current | Select when lower dynamic impedance and reduced thermal load are prioritized over peak power handling |
| BZX85C8V2 | Nominal VZ = 8.2 V, Ptot = 1300 mW, ZZ = 15 Ω (at 5 mA), DO-41 package | Higher test current sensitivity (5 mA vs. 100 mA) and lower ZZ benefit low-power bias networks but reduce pulse energy margin | Select for cost-sensitive consumer electronics where 100 mA Zener current capability is unnecessary |
Compared with 1N4738A-T and BZX85C8V2, the ZPY8V2-TR delivers superior pulse power handling (1300 mW) and is specifically characterized at 100 mA test current-making it optimal for high-current shunt regulation and transient clamping where sustained Zener conduction occurs.
Availability
ZPY8V2-TR is available at Aetrix Electronics and suitable for industrial power supply regulation, overvoltage protection circuits, and automotive sensor signal conditioning requiring stable component supply and full traceability.
Supply support for ZPY8V2-TR 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 applications.
The ZPY series targets high-power voltage stabilization and transient suppression in ruggedized power systems, with emphasis on thermal robustness, tight Zener grading, and extended temperature operation.
FAQ
What is the Zener voltage tolerance for ZPY8V2-TR?
The ZPY8V2-TR has a specified Zener voltage range of 7.7 V (minimum) to 8.7 V (maximum) at 100 mA test current, yielding a nominal value of 8.2 V with ±0.5 V absolute tolerance. This tolerance is verified per Vishay's Rev. 2.4 datasheet (Document Number: 85790) and reflects E12-standard grading for interchangeability across the ZPY family. The ZPY8V2-TR maintains this specification under standard test conditions at 25 °C ambient.
Can ZPY8V2-TR be used in surface-mount designs?
No, the ZPY8V2-TR is packaged exclusively in the axial-leaded DO-41 (DO-204AL) through-hole format and is not compatible with SMT assembly. It lacks solder pads, land patterns, or reflow profiles defined for surface-mount packages. For SMT alternatives, engineers should consider Vishay's SMAZ8.2 or BZT52-B8V2, which are functionally similar but require layout redesign. The ZPY8V2-TR must be mounted using wave or selective soldering processes.
What is the maximum admissible Zener current for ZPY8V2-TR?
Per Vishay's electrical characteristics table, the ZPY8V2-TR supports an admissible Zener current of 1 A (pulsed, tp = 10 ms) under specified thermal conditions. Continuous DC current must be limited by power derating: at 25 °C ambient, max IZ = Ptot/VZ ≈ 1300 mW / 8.2 V ≈ 158 mA, but practical design limits to 100 mA to ensure stability and longevity. The ZPY8V2-TR datasheet confirms 100 mA as the standardized test current for parameter characterization.
Does ZPY8V2-TR meet RoHS and REACH requirements?
Yes, the ZPY8V2-TR complies with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, as confirmed in Vishay's material declaration (Document Number: 99912). The device uses lead-free terminations and UL 94 V-0 compliant molding compound. Compliance status is maintained across all manufacturing lots, and full substance declarations are available upon request from Aetrix Electronics for ZPY8V2-TR procurement.
How does temperature affect ZPY8V2-TR's Zener voltage?
The ZPY8V2-TR exhibits a temperature coefficient of +3 × 10⁻⁴/°C at 100 mA test current, meaning its Zener voltage increases by approximately 2.46 mV/°C near 8.2 V. This positive drift is linear over the operating junction temperature range (-55 to +175 °C) and is fully characterized in Vishay's datasheet. Designers using ZPY8V2-TR in precision references must compensate for this drift-e.g., via complementary NTC networks-or select it only where moderate drift is acceptable, as in non-critical clamping applications.
ZPY8V2-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 8.2 V
- Tolerance:
- ±5%
- Power - Max:
- 1.3 W
- Impedance (Max) (Zzt):
- 1 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 175°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
ZPY8V2-TR FAQ
1.How can I place an order for ZPY8V2-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for ZPY8V2-TR 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 ZPY8V2-TR reliable?
The price and inventory of ZPY8V2-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZPY8V2-TR is usually 5 days.
3.What payment methods are accepted for ZPY8V2-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZPY8V2-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZPY8V2-TR?
ZPY8V2-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZPY8V2-TR 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 ZPY8V2-TR?
For technical support, including ZPY8V2-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZPY8V2-TR requirements.
6.How does Aetrix verify that ZPY8V2-TR is sourced from the original manufacturer or authorized distributors?
All ZPY8V2-TR 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 ZPY8V2-TR meets industry standards.
7.What is the process for return or replacement of ZPY8V2-TR?
All ZPY8V2-TR units undergo pre-shipment inspection (PSI). If there is an issue with ZPY8V2-TR, 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 ZPY8V2-TR part is unused and in its original packaging.
Return procedure for ZPY8V2-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ZPY8V2-TR Tags
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