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Diodes Incorporated PD3Z284C20-7
- Part No.:
- PD3Z284C20-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- PowerDI™ 323
- Datasheet:
-
PD3Z284C20-7.pdf
- Description:
- DIODE ZENER 20V 500MW POWERDI323
- Quantity:
- Payment:
- Shipping:
Inventory:3,448
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Product details
Overview
PD3Z284C20-7 from Diodes Incorporated is a 20 V, 500 mW surface-mount Zener diode in PowerDI™323 package, with nominal Zener voltage 20 V (min 18.8 V, max 21.2 V) at 5 mA test current, 20 Ω maximum Zener impedance, and −3.5 to +0 mV/°C temperature coefficient - used for precision voltage reference and overvoltage protection in automotive power management circuits.
For engineers reviewing the PD3Z284C20-7 datasheet, PD3Z284C20-7 pinout, PD3Z284C20-7 application, or PD3Z284C20-7 equivalent, key selection considerations include its AEC-Q101 qualification, ultra-small PowerDI323 footprint, 0.005 g weight, cathode-band polarity marking, and thermal resistance of 250 °C/W under standard PCB mounting.
Technical Context
This Zener diode operates as a two-terminal voltage regulator with sharp reverse breakdown at 20 V, designed for stable DC reference generation in low-power analog subsystems. Its planar die construction ensures consistent Zener characteristics across temperature, while the "green" molding compound meets UL 94V-0 flammability and RoHS compliance requirements.
The device exhibits 0.1 µA maximum reverse leakage at 14.0 V and 27.3 V maximum Zener voltage at 0.1 mA, supporting low-current biasing and sensing applications. Thermal derating begins above 25 °C ambient, with full 500 mW dissipation only at TA ≤ 25 °C per the published derating curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20 V nominal (18.8–21.2 V range at IZT = 5 mA); defines stable regulation point for feedback or clamping |
| Power Dissipation | 500 mW at TA = 25 °C; limits continuous operating current to ~25 mA at 20 V without heatsinking |
| Zener Impedance (ZZT) | 20 Ω max at 5 mA; ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | 0.1 µA max at VR = 14.0 V; enables low-power standby reference stability |
| Temp. Coefficient | −3.5 to 0 mV/°C; supports predictable drift compensation in automotive temperature ranges |
| Package | PowerDI™323 (2.5 × 1.9 × 0.13 mm); enables high-density PCB layout with 0.005 g mass and J-STD-020D Level 1 moisture sensitivity |
Pinout & Package
Package: PowerDI™323 - ultra-small surface-mount plastic case with matte tin-plated copper leadframe, cathode band marking, and UL 94V-0 rated "green" molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to system ground or lower-potential node; forms reference return path |
| Cathode | Reverse breakdown terminal / regulated output node | Provides stable 20 V output when reverse-biased; marked with visible cathode band |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified reliability | Validated for automotive-grade operation from −65 °C to +150 °C junction temperature |
| Planar die construction | Ensures tight VZ tolerance (±5%) and repeatable Zener impedance across production lots |
| Lead-free & RoHS compliant | No intentionally added lead; compatible with Pb-free reflow profiles and environmental regulations |
| Low thermal resistance | RθJA = 250 °C/W on standard polyimide PCB enables passive thermal management |
Applications
| Automotive ECU Voltage Reference | Industrial Sensor Biasing |
|---|---|
|
Use Scenario: Providing stable 20 V reference for microcontroller ADC reference or CAN transceiver bias in engine control units. IC Role / Device Role / Timing Role: Precision Zener reference source for analog signal conditioning and power rail monitoring. Use Value: Maintains ±0.6 V regulation accuracy over −40 °C to +125 °C ambient, meeting ASIL-B functional safety margin requirements. |
Use Scenario: Supplying calibrated bias current to RTD or strain gauge bridges in factory automation sensors. IC Role / Device Role / Timing Role: Low-drift voltage reference enabling <1% total measurement error across temperature. Use Value: 20 Ω Zener impedance minimizes output perturbation during bridge excitation switching events. |
| USB-C PD Protection Clamp | Telecom Line Interface Regulator |
|
Use Scenario: Clamping transient overvoltage on USB-C power delivery lines during hot-plug events. IC Role / Device Role / Timing Role: Fast-response shunt protector limiting bus voltage to 21.2 V peak. Use Value: 500 mW rating sustains 100 ms surge pulses up to 250 mA without degradation. |
Use Scenario: Stabilizing bias voltage for line driver ICs in DSL or POTS interface modules. IC Role / Device Role / Timing Role: Primary DC reference for op-amp gain-setting and level-shifting networks. Use Value: 0.1 µA leakage at 14 V ensures <10 nA error contribution in high-impedance feedback paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| D3Z20BF-7 | Same 20 V rating, but in SOD-323 package; 350 mW power rating; −2.0 to +0.5 mV/°C tempco | Lower power handling; slightly tighter tempco; smaller footprint (1.7 × 1.3 mm) | Preferred for space-constrained consumer designs where 350 mW suffices |
| BZX384-C20,115 | SOD-323 package; 20 V nominal; 300 mW; 40 Ω ZZT; −2.5 to +0.5 mV/°C | Higher Zener impedance; lower power; non-AEC-Q101; wider VZ tolerance (±5.5%) | Suitable for cost-sensitive industrial controls where automotive qualification is not required |
Compared with D3Z20BF-7 and BZX384-C20, PD3Z284C20-7 offers superior power handling (500 mW vs. ≤350 mW), AEC-Q101 qualification for automotive use, and lower Zener impedance (20 Ω vs. ≥35 Ω), making it optimal for high-reliability voltage reference and clamping where thermal margin and regulation stability are critical.
Availability
PD3Z284C20-7 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor calibration, and telecom line interface applications requiring stable component supply and long-term lifecycle support.
Supply support for PD3Z284C20-7 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 computing markets.
PD3Z284C20-7 belongs to the PowerDI™323 Zener diode product line, engineered for compact, thermally efficient voltage regulation in space- and reliability-critical applications such as engine control, ADAS power domains, and industrial IoT nodes.
FAQ
Is PD3Z284C20-7 suitable for automotive applications?
Yes - it is qualified to AEC-Q101 standards, operates from −65 °C to +150 °C junction temperature, and features planar die construction for stable Zener voltage under thermal cycling. Its PowerDI™323 package supports automated optical inspection and high-yield SMT assembly in automotive production lines.
What is the recommended pad layout for PD3Z284C20-7?
The official Diodes Incorporated application note AP02001 specifies a symmetric 2.5 mm × 1.9 mm copper pad pattern with 0.65 mm solder mask opening and thermal relief traces. This layout achieves the stated RθJA = 250 °C/W and prevents tombstoning during reflow.
Does PD3Z284C20-7 have a cathode band marking?
Yes - it uses a visible cathode band on the top surface adjacent to the cathode terminal, consistent with industry-standard polarity identification. The band aligns with the "Cathode" side in the top-view diagram of the PowerDI™323 outline drawing.
Why is PD3Z284C20-7 marked "NOT RECOMMENDED FOR NEW DESIGNS"?
Diodes Incorporated recommends migrating to the newer D3ZxxBF series due to improved Zener impedance, tighter voltage tolerance, and enhanced thermal performance. However, PD3Z284C20-7 remains fully supported for legacy program continuity, with no announced obsolescence date as of DS32239 Rev. 10-3 (April 2013).
PD3Z284C20-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- PowerDI™ 323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 20 V
- Tolerance:
- ±6%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 14 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
PD3Z284C20-7 FAQ
1.How can I place an order for PD3Z284C20-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for PD3Z284C20-7 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 PD3Z284C20-7 reliable?
The price and inventory of PD3Z284C20-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PD3Z284C20-7 is usually 5 days.
3.What payment methods are accepted for PD3Z284C20-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PD3Z284C20-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PD3Z284C20-7?
PD3Z284C20-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PD3Z284C20-7 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 PD3Z284C20-7?
For technical support, including PD3Z284C20-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PD3Z284C20-7 requirements.
6.How does Aetrix verify that PD3Z284C20-7 is sourced from the original manufacturer or authorized distributors?
All PD3Z284C20-7 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 PD3Z284C20-7 meets industry standards.
7.What is the process for return or replacement of PD3Z284C20-7?
All PD3Z284C20-7 units undergo pre-shipment inspection (PSI). If there is an issue with PD3Z284C20-7, 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 PD3Z284C20-7 part is unused and in its original packaging.
Return procedure for PD3Z284C20-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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