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Diodes Incorporated PD3Z284C8V2-7
- Part No.:
- PD3Z284C8V2-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- PowerDI™ 323
- Datasheet:
-
PD3Z284C8V2-7.pdf
- Description:
- DIODE ZENER 8.2V 500MW PWRDI323
- Quantity:
- Payment:
- Shipping:
Inventory:5,377
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Product details
Overview
PD3Z284C8V2-7 from Diodes Incorporated is a 0.5W surface-mount Zener diode with nominal zener voltage 8.2V (±5%), 10Ω maximum zener impedance at 5mA, 0.7µA maximum reverse leakage at 5.0V, and AEC-Q101 qualification for automotive-grade reliability in voltage regulation and overvoltage protection circuits.
For engineers reviewing the PD3Z284C8V2-7 datasheet, PD3Z284C8V2-7 pinout, PD3Z284C8V2-7 application, or PD3Z284C8V2-7 equivalent, key selection criteria include zener voltage tolerance, dynamic impedance at test current, thermal resistance (250°C/W), and PowerDI323 package compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and temperature conditions. It features planar die construction and is rated for continuous power dissipation of 500mW at 25°C ambient, derating linearly above 25°C per the published curve.
The device exhibits a positive temperature coefficient of +3.2mV/°C at 5mA test current and is characterized with 10Ω dynamic impedance (ZZT) and 80Ω knee impedance (ZZK) - critical for low-noise regulation and fast transient response in feedback networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2V nominal, 7.7–8.7V range at IZT = 5mA - ensures tight regulation in 8V rail monitoring and clamping |
| Power Dissipation (PD) | 500mW at TA = 25°C - supports sustained operation in compact, unheatsinked layouts |
| Zener Impedance (ZZT) | 10Ω max at 5mA - minimizes output voltage variation under dynamic load changes |
| Reverse Leakage (IR) | 0.7µA max at VR = 5.0V - preserves low quiescent current in battery-backed circuits |
| Thermal Resistance (RθJA) | 250°C/W - defines junction-to-ambient rise per watt; requires adequate copper area for thermal management |
| Temperature Coefficient | +3.2mV/°C at 5mA - enables predictable drift compensation in precision references |
| Package | PowerDI323 - 2.5 × 1.9 × 0.13mm footprint ideal for space-constrained automotive and industrial PCBs |
Pinout & Package
PowerDI323 is a 2-terminal surface-mount package with cathode band marking on the top surface. Terminals are matte tin-plated copper; polarity is unambiguous via cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; forms reference return path in shunt regulator |
| Cathode | Zener breakdown terminal / voltage clamp input | Connected to regulated node or signal line; conducts when voltage exceeds 8.2V to clamp transients |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Enables consistent breakdown characteristics and long-term stability under thermal cycling |
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control and body electronics |
| Green molding compound (UL 94V-0) | Halogen-free, flame-retardant encapsulation compliant with RoHS and automotive material standards |
| Moisture Sensitivity Level 1 | No floor life limitation or baking requirement prior to reflow - simplifies SMT assembly |
Applications
| Automotive Engine Control Unit (ECU) Voltage Monitoring | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Monitoring 8V reference rail in microcontroller power domain to detect undervoltage faults. IC Role / Device Role / Timing Role: Shunt voltage reference and overvoltage clamp for ADC reference buffer supply. Use Value: Maintains ±5% regulation across -40°C to +125°C, enabling reliable fault detection without external regulators. | Use Scenario: Protecting 4–20mA analog input front-end from ESD and surge events. IC Role / Device Role / Timing Role: Fast-acting transient voltage suppressor placed before op-amp input stage. Use Value: Clamps >8.7V excursions within nanoseconds while adding <0.7µA leakage - preserving signal integrity. |
| Consumer Power Adapter Feedback Loop | Medical Diagnostic Equipment Reference Stabilization |
Use Scenario: Providing stable 8.2V reference for optocoupler-based feedback in isolated AC/DC converters. IC Role / Device Role / Timing Role: Precision shunt regulator in secondary-side feedback network. Use Value: Delivers 10Ω dynamic impedance to minimize loop gain variation - improving cross-regulation and load step response. | Use Scenario: Stabilizing bias voltage for low-noise instrumentation amplifiers in portable ultrasound front-ends. IC Role / Device Role / Timing Role: Low-drift voltage reference source for analog signal conditioning chain. Use Value: +3.2mV/°C tempco allows predictable calibration offset correction - meeting IEC 60601-1 leakage and accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| D3Z8V2BF-7 | Same 8.2V rating, 0.5W, but in SOD-323 package; 7Ω ZZT, lower RθJA (200°C/W) | Better thermal performance and tighter impedance; not AEC-Q101 qualified | Select for commercial/industrial designs prioritizing thermal margin over automotive qualification |
| BZX384-C8V2,115 | 8.2V, 0.3W, SOD-323; 20Ω ZZT; no AEC-Q101 or green compound compliance | Lower power rating and higher impedance; suitable only for low-current biasing | Choose only for cost-sensitive non-automotive applications with <1mA zener current |
Compared with D3Z8V2BF-7 and BZX384-C8V2,115, PD3Z284C8V2-7 uniquely combines AEC-Q101 qualification, halogen-free packaging, and 10Ω impedance in PowerDI323 - making it the sole option for automotive-compliant 8.2V shunt regulation where board space and reliability are jointly constrained.
Availability
PD3Z284C8V2-7 is available at Aetrix Electronics and suitable for automotive engine control units, industrial programmable logic controllers, and medical diagnostic equipment requiring stable component supply and long-term lifecycle support.
Supply support for PD3Z284C8V2-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The PD3ZxxC series belongs to Diodes' automotive-qualified Zener diode portfolio, engineered specifically for voltage reference, overvoltage clamping, and ESD protection in harsh-environment applications demanding AEC-Q101 reliability and green material compliance.
FAQ
What is the maximum allowable zener current for continuous operation?
The absolute maximum DC zener current is derived from PD/VZ = 500mW/8.2V ≈ 61mA, but the datasheet specifies IZT = 5mA for parameter characterization. For stable regulation and thermal safety, operation below 20mA is recommended with appropriate PCB copper area to manage 250°C/W junction-to-ambient rise.
Is PD3Z284C8V2-7 suitable for use in a 125°C ambient environment?
Yes - its operating temperature range extends to +150°C. At 125°C ambient, derating reduces allowable power to approximately 200mW (per Fig. 1), supporting up to ~24mA zener current. This remains sufficient for most reference and clamping roles in under-hood automotive modules.
How does the PowerDI323 package compare to SOD-323 in terms of thermal performance?
PowerDI323 has RθJA = 250°C/W versus ~200°C/W for SOD-323 due to larger copper leadframe and optimized pad layout. However, PowerDI323's thermal performance improves significantly with ≥25mm² of 1oz copper connected to both terminals - achieving near-SOD-323 levels in well-designed layouts.
Why is this part marked "NOT RECOMMENDED FOR NEW DESIGNS"?
Diodes Incorporated recommends migrating to the newer D3ZxxBF series, which offers identical electrical specs with improved thermal resistance, tighter tolerances, and enhanced robustness. PD3Z284C8V2-7 remains fully supported for legacy production and repair, with no announced obsolescence date.
PD3Z284C8V2-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- PowerDI™ 323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 8.2 V
- Tolerance:
- ±6%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 700 nA @ 5 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 323
PD3Z284C8V2-7 FAQ
1.How can I place an order for PD3Z284C8V2-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for PD3Z284C8V2-7 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 PD3Z284C8V2-7 reliable?
The price and inventory of PD3Z284C8V2-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PD3Z284C8V2-7 is usually 5 days.
3.What payment methods are accepted for PD3Z284C8V2-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PD3Z284C8V2-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PD3Z284C8V2-7?
PD3Z284C8V2-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PD3Z284C8V2-7 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 PD3Z284C8V2-7?
For technical support, including PD3Z284C8V2-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PD3Z284C8V2-7 requirements.
6.How does Aetrix verify that PD3Z284C8V2-7 is sourced from the original manufacturer or authorized distributors?
All PD3Z284C8V2-7 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 PD3Z284C8V2-7 meets industry standards.
7.What is the process for return or replacement of PD3Z284C8V2-7?
All PD3Z284C8V2-7 units undergo pre-shipment inspection (PSI). If there is an issue with PD3Z284C8V2-7, 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 PD3Z284C8V2-7 part is unused and in its original packaging.
Return procedure for PD3Z284C8V2-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PD3Z284C8V2-7 Tags
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