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Diodes Incorporated PD3Z284C4V3-7
- Part No.:
- PD3Z284C4V3-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- PowerDI™ 323
- Datasheet:
-
PD3Z284C4V3-7.pdf
- Description:
- DIODE ZENER 4.3V 500MW PWRDI323
- Quantity:
- Payment:
- Shipping:
Inventory:8,524
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Product details
Overview
PD3Z284C4V3-7 from Diodes Incorporated is a 0.5W surface-mount Zener diode with nominal zener voltage 4.3V (min 4.0V, max 4.6V at 5mA), maximum zener impedance 90Ω at 5mA and 600Ω at 1mA, reverse current ≤3μA at 1.0V, and temperature coefficient 0 mV/°C. It operates from −65°C to +150°C and is qualified to AEC-Q101 for automotive reliability.
For engineers reviewing the PD3Z284C4V3-7 datasheet, PD3Z284C4V3-7 pinout, PD3Z284C4V3-7 application, or PD3Z284C4V3-7 equivalent, this device serves as a precision voltage reference and overvoltage clamp in low-power analog monitoring circuits, ESD-protected I/O rails, and automotive body control modules where stable 4.3V regulation under transient conditions is required.
Technical Context
This Zener diode uses planar die construction in a PowerDI323 package, enabling stable breakdown characteristics with low thermal resistance (250°C/W) and minimal self-heating during pulsed operation. Its ultra-small footprint supports high-density PCB layouts while maintaining AEC-Q101 qualification for automotive-grade reliability.
The device exhibits a flat temperature coefficient (0 mV/°C) near 4.3V, making it suitable for applications requiring minimal drift across temperature. Reverse leakage remains ≤3μA up to 1.0V, supporting low-quiescent-current bias networks and precision threshold detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.3V nominal, 4.0–4.6V range at 5mA - defines precise clamping/reference level in voltage-sensitive circuits |
| Power Dissipation (PD) | 500mW - supports continuous operation at 4.3V/116mA or pulsed operation with derating above 25°C |
| Zener Impedance (ZZT) | 90Ω at 5mA - ensures stable regulation under moderate load variation |
| Reverse Current (IR) | ≤3μA at VR = 1.0V - enables use in low-leakage bias chains and battery-backed sensing nodes |
| Temp. Coefficient (TC) | 0 mV/°C - eliminates voltage drift compensation needs in 4.3V reference designs |
| Operating Temp. Range | −65°C to +150°C - certified for under-hood automotive and industrial environments |
| Package | PowerDI323 - 2.5 × 1.9 mm footprint with 0.65 mm lead pitch, compatible with standard SMT reflow |
Pinout & Package
Package: PowerDI323 - ultra-small surface-mount plastic case (2.50 × 1.90 × 0.13 mm), matte tin-plated copper leadframe, cathode band marking, moisture sensitivity level 1.
| 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 for regulated output |
| Cathode | Zener breakdown terminal / voltage regulation node | Connected to input rail or signal line being clamped; delivers stable 4.3V reference when reverse-biased |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable breakdown voltage tolerance and long-term stability under thermal cycling |
| AEC-Q101 qualification | Validates reliability for automotive electronics including BCM, lighting control, and sensor interfaces |
| Green molding compound (Br/Sb-free) | Meets RoHS Directive 2011/65/EU and JEDEC J-STD-020D moisture sensitivity Level 1 |
| Ultra-small PowerDI323 footprint | Reduces board space by >40% vs. SMA packages while maintaining 500mW power handling |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage clamping on LIN bus transceiver I/O lines exposed to load dump transients. IC Role / Device Role / Timing Role: Zener diode acting as primary overvoltage protection element shunting surge energy to ground. Use Value: Limits voltage excursion to ≤4.6V during 12V system transients, preventing damage to 5V-tolerant transceivers without adding series resistance. | Use Scenario: Precision 4.3V reference for 12-bit ADC biasing in temperature-sensing front-end. IC Role / Device Role / Timing Role: Stable shunt reference providing known voltage for ratiometric conversion calibration. Use Value: 0 mV/°C TC eliminates temperature-induced offset error in measurement chain, improving accuracy over −40°C to +125°C. |
| USB-C Port ESD Protection | Low-Power IoT Node Power Monitoring |
Use Scenario: Secondary clamping stage downstream of TVS diode on VBUS line to suppress residual ringing. IC Role / Device Role / Timing Role: Low-capacitance (≈25pF) Zener absorbing sub-10ns overshoot after primary TVS conduction. Use Value: Maintains <3μA leakage at 1.0V, avoiding parasitic drain on battery-powered USB-C accessories during standby. | Use Scenario: Battery voltage monitor threshold detector in coin-cell–powered environmental sensor node. IC Role / Device Role / Timing Role: Shunt regulator establishing 4.3V trip point for brown-out detection logic. Use Value: Enables wake-up from deep sleep when battery drops below 4.0V, extending operational life via precise low-voltage cutoff. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| D3Z4V3BF-7 | Same 4.3V rating, 300mW power, SOD-323 package, lower ZZT (30Ω), higher IR (5μA at 1V) | Better regulation stability but higher leakage; unsuitable for ultra-low-IQ systems | Select for tighter voltage tolerance in high-precision references where leakage is not critical |
| BZX384-C4V3,115 | 4.3V, 300mW, SOD-323, ZZT = 90Ω, IR = 3μA, no AEC-Q101 qualification | Lacks automotive qualification; lower cost for commercial-grade consumer applications | Select for cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
Compared with D3Z4V3BF-7 and BZX384-C4V3,115, PD3Z284C4V3-7 uniquely combines AEC-Q101 qualification, 500mW power handling, and zero-TC performance-making it optimal for automotive and industrial applications demanding both reliability and thermal stability.
Availability
PD3Z284C4V3-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, USB-C port ESD protection, and low-power IoT node power monitoring requiring stable component supply and full traceability.
Supply support for PD3Z284C4V3-7 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' AEC-Q101–qualified Zener diode product line, engineered specifically for automotive and industrial applications requiring robust voltage regulation, compact packaging, and guaranteed parametric stability across extended temperature ranges.
FAQ
What is the maximum steady-state power dissipation for PD3Z284C4V3-7 at 70°C ambient?
At 70°C ambient, the device's power dissipation must be derated linearly from 500mW at 25°C using the 250°C/W thermal resistance. The allowable power is 500mW × (1 − (70 − 25)/250) = 310mW. This value assumes mounting on a polyimide PCB per Diodes' recommended pad layout in AP02001.
Is PD3Z284C4V3-7 suitable for use as a voltage reference in a 12-bit ADC design?
Yes - its 4.3V nominal zener voltage with ±0.3V tolerance, 0 mV/°C temperature coefficient, and 90Ω dynamic impedance at 5mA enable stable reference generation. When biased at 5mA with appropriate ballast resistance, it achieves <0.05% full-scale error contribution over −40°C to +85°C in ratiometric ADC configurations.
Does PD3Z284C4V3-7 have a defined total capacitance value, and how does it affect high-frequency performance?
Per Figure 4 in DS32239 Rev. 10-3, total capacitance is ≈25pF at 4.3V nominal zener voltage and 1MHz. This low capacitance minimizes signal distortion in high-speed clamping applications, such as protecting LIN or CAN FD transceiver pins from fast-rising ESD events without degrading edge integrity.
Why is PD3Z284C4V3-7 marked as "NOT RECOMMENDED FOR NEW DESIGNS"?
Diodes Incorporated recommends migrating to the newer D3ZxxBF series due to improved ZZT, tighter VZ tolerance, and enhanced surge capability. However, PD3Z284C4V3-7 remains fully supported for legacy production, with active inventory, full datasheet documentation, and unchanged electrical specifications - ensuring continuity for existing designs.
PD3Z284C4V3-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- PowerDI™ 323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.3 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 1 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
PD3Z284C4V3-7 FAQ
1.How can I place an order for PD3Z284C4V3-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for PD3Z284C4V3-7 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 PD3Z284C4V3-7 reliable?
The price and inventory of PD3Z284C4V3-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PD3Z284C4V3-7 is usually 5 days.
3.What payment methods are accepted for PD3Z284C4V3-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PD3Z284C4V3-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PD3Z284C4V3-7?
PD3Z284C4V3-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PD3Z284C4V3-7 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 PD3Z284C4V3-7?
For technical support, including PD3Z284C4V3-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PD3Z284C4V3-7 requirements.
6.How does Aetrix verify that PD3Z284C4V3-7 is sourced from the original manufacturer or authorized distributors?
All PD3Z284C4V3-7 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 PD3Z284C4V3-7 meets industry standards.
7.What is the process for return or replacement of PD3Z284C4V3-7?
All PD3Z284C4V3-7 units undergo pre-shipment inspection (PSI). If there is an issue with PD3Z284C4V3-7, 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 PD3Z284C4V3-7 part is unused and in its original packaging.
Return procedure for PD3Z284C4V3-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PD3Z284C4V3-7 Tags
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Diodes Incorporated
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Diodes Incorporated
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