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Diodes Incorporated PD3Z284C4V7-7
- Part No.:
- PD3Z284C4V7-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- PowerDI™ 323
- Datasheet:
-
PD3Z284C4V7-7.pdf
- Description:
- DIODE ZENER 4.7V 500MW PWRDI323
- Quantity:
- Payment:
- Shipping:
Inventory:1,698
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Product details
Overview
PD3Z284C4V7-7 from Diodes Incorporated is a 0.5W surface-mount Zener diode with nominal zener voltage 4.7 V (min 4.4 V, max 5.0 V at IZT = 5 mA), zener impedance ≤80 Ω at 5 mA and ≤500 Ω at 1 mA, reverse current ≤3 µA at 2.0 V, and temperature coefficient −3.5 mV/°C - used for precision voltage reference and overvoltage protection in automotive body control modules.
For engineers reviewing the PD3Z284C4V7-7 datasheet, PD3Z284C4V7-7 pinout, PD3Z284C4V7-7 application, or PD3Z284C4V7-7 equivalent, key selection criteria include zener voltage tolerance, low dynamic impedance at low test current, AEC-Q101 qualification, PowerDI323 package thermal performance, and cathode-band polarity marking for PCB layout verification.
Technical Context
This Zener diode employs planar die construction for stable breakdown characteristics and low leakage. It operates within −65°C to +150°C junction temperature range and delivers regulated voltage with ±0.3 V tolerance at 5 mA test current and −3.5 mV/°C temperature coefficient.
Thermal resistance is 250°C/W (junction-to-ambient, on recommended polyimide PCB), enabling 500 mW power dissipation at 25°C ambient - derating linearly to zero at 150°C. Reverse current remains ≤3 µA up to 2.0 V, supporting low-power biasing in sensor signal conditioning circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.7 V nominal, 4.4–5.0 V range at 5 mA - ensures stable reference under production tolerances |
| Zener Impedance (ZZT) | ≤80 Ω at 5 mA - minimizes output voltage variation under load transients |
| Reverse Current (IR) | ≤3 µA at VR = 2.0 V - enables ultra-low quiescent current in battery-backed circuits |
| Power Dissipation (PD) | 500 mW at 25°C - supports compact layout without forced cooling in space-constrained modules |
| Temp. Coefficient (TC) | −3.5 mV/°C - provides predictable drift compensation in automotive ambient ranges |
| Package | PowerDI323 - 2.5 × 1.9 mm footprint with 0.3 mm profile, optimized for high-density SMT assembly |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress-test requirements including HTGB, TCT, HTRB |
Pinout & Package
Package: PowerDI323 - ultra-small surface-mount plastic package (2.50 × 1.90 × 0.13 mm), molded with halogen-free "Green" compound (UL 94V-0), matte tin-plated copper leadframe, cathode band marking on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to system ground or low-impedance return path; defines reference node for regulation |
| Cathode | Zener breakdown terminal / regulated output node | Supplies stabilized 4.7 V to load; marked by visible cathode band on package top surface |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable zener knee characteristics and long-term stability under thermal cycling |
| AEC-Q101 qualification | Validates reliability for automotive under-hood applications including BCM, lighting, and sensor interfaces |
| Lead-free & RoHS-compliant | Meets global environmental compliance without compromising solderability or thermal performance |
| Moisture sensitivity Level 1 | Eliminates bake requirement prior to reflow, reducing manufacturing overhead and handling risk |
| Low-profile PowerDI323 | Enables placement beneath connectors or near tall components in tight board stacks |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating reference voltage for microcontroller ADC inputs monitoring door latch status and window position sensors. IC Role / Device Role / Timing Role: Precision voltage reference source providing stable 4.7 V to analog front-end circuitry. Use Value: Maintains <±1% measurement accuracy across −40°C to +125°C ambient due to low TC and AEC-Q101 validation. |
Use Scenario: Biasing bridge amplifiers in 4–20 mA loop-powered pressure transmitters. IC Role / Device Role / Timing Role: Low-leakage shunt regulator establishing stable excitation voltage for Wheatstone bridges. Use Value: Enables <3 µA reverse current at 2 V, minimizing error contribution in µA-level loop current budgets. |
| USB-C Power Delivery Monitoring | Smart Meter Voltage Reference |
Use Scenario: Clamping and referencing VBUS sense circuitry during 5–20 V negotiation phases. IC Role / Device Role / Timing Role: Overvoltage clamp and precision reference for comparator-based fault detection. Use Value: 80 Ω dynamic impedance ensures fast response to transient overvoltage events without oscillation. |
Use Scenario: Providing calibration reference for metrology-grade energy measurement ICs in Class 0.2 smart meters. IC Role / Device Role / Timing Role: Primary voltage reference for internal DAC and ADC offset trimming. Use Value: Tight 4.4–5.0 V tolerance and −3.5 mV/°C TC support <50 ppm/°C total drift over operating range. |
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 |
|---|---|---|---|
| D3Z4V7BF-7 | Same 4.7 V nominal, but lower ZZT (≤50 Ω @ 5 mA), higher PD (1 W), SOD-323 package | Higher power handling supports surge-tolerant designs; larger footprint requires layout revision | Select when >500 mW transient dissipation or tighter impedance is required |
| BZX384-C4V7,115 | 4.7 V nominal, ZZT ≤90 Ω @ 5 mA, 300 mW rating, SOD-323, AEC-Q101 qualified | Lower power rating limits use in sustained regulation; identical footprint enables drop-in replacement | Choose for cost-sensitive industrial designs where 300 mW suffices and footprint compatibility is critical |
Compared with D3Z4V7BF-7 and BZX384-C4V7,115, PD3Z284C4V7-7 offers optimal balance of AEC-Q101 reliability, 500 mW capability, and ultra-compact PowerDI323 size - making it preferred for space-constrained automotive modules requiring proven thermal robustness.
Availability
PD3Z284C4V7-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor transmitters, USB-C power monitoring circuits, and smart meter reference subsystems requiring stable component supply with full traceability and lifecycle management.
Supply support for PD3Z284C4V7-7 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, specializing in high-reliability components for automotive, industrial, and consumer markets.
PD3Z284C4V7-7 belongs to the PD3ZxxC series - a family of AEC-Q101-qualified Zener diodes designed specifically for automotive voltage reference and protection in space-constrained, thermally demanding environments.
FAQ
Is PD3Z284C4V7-7 suitable for new automotive designs?
No - Diodes Incorporated explicitly marks this part as "NOT RECOMMENDED FOR NEW DESIGNS" and directs users to the D3ZxxBF Series. The PD3Z284C4V7-7 remains available for legacy program support and repair, but new designs should adopt D3Z4V7BF-7 for improved impedance, power rating, and long-term supply assurance.
What is the maximum reverse voltage before breakdown in PD3Z284C4V7-7?
The specified zener voltage is 4.7 V nominal with a guaranteed range of 4.4–5.0 V at 5 mA test current. Breakdown occurs sharply within this band; operation below 4.4 V yields negligible reverse current (<3 µA at 2.0 V), while voltages above 5.0 V trigger full conduction with dynamic impedance ≤80 Ω.
How does the PowerDI323 package affect thermal performance?
Mounted on a polyimide PCB with Diodes' recommended pad layout, the PowerDI323 achieves 250°C/W junction-to-ambient thermal resistance. This allows full 500 mW dissipation only at 25°C ambient; derating is linear to zero at 150°C, requiring thermal design consideration in enclosed or high-temperature enclosures.
Can PD3Z284C4V7-7 replace BZX384-C4V7 in existing layouts?
No - although both are 4.7 V Zeners in small packages, PD3Z284C4V7-7 uses PowerDI323 (2.5 × 1.9 mm), while BZX384-C4V7 uses SOD-323 (1.7 × 1.3 mm). Footprint and solder pad dimensions differ significantly; mechanical redesign is required for substitution.
PD3Z284C4V7-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- PowerDI™ 323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.7 V
- Tolerance:
- ±6%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 2 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
PD3Z284C4V7-7 FAQ
1.How can I place an order for PD3Z284C4V7-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for PD3Z284C4V7-7 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 PD3Z284C4V7-7 reliable?
The price and inventory of PD3Z284C4V7-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PD3Z284C4V7-7 is usually 5 days.
3.What payment methods are accepted for PD3Z284C4V7-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PD3Z284C4V7-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PD3Z284C4V7-7?
PD3Z284C4V7-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PD3Z284C4V7-7 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 PD3Z284C4V7-7?
For technical support, including PD3Z284C4V7-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PD3Z284C4V7-7 requirements.
6.How does Aetrix verify that PD3Z284C4V7-7 is sourced from the original manufacturer or authorized distributors?
All PD3Z284C4V7-7 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 PD3Z284C4V7-7 meets industry standards.
7.What is the process for return or replacement of PD3Z284C4V7-7?
All PD3Z284C4V7-7 units undergo pre-shipment inspection (PSI). If there is an issue with PD3Z284C4V7-7, 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 PD3Z284C4V7-7 part is unused and in its original packaging.
Return procedure for PD3Z284C4V7-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PD3Z284C4V7-7 Tags
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Diodes Incorporated
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