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Diodes Incorporated PD3Z284C7V5-7
- Part No.:
- PD3Z284C7V5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- PowerDI™ 323
- Datasheet:
-
PD3Z284C7V5-7.pdf
- Description:
- DIODE ZENER 7.5V 500MW PWRDI323
- Quantity:
- Payment:
- Shipping:
Inventory:6,001
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Product details
Overview
PD3Z284C7V5-7 from Diodes Incorporated is a 0.5W surface-mount Zener diode with nominal zener voltage 7.5V (±0.4V tolerance at 5mA), maximum zener impedance 10Ω at test current, and reverse leakage ≤1µA at 5.0V. It features PowerDI™323 ultra-small package, AEC-Q101 qualification for automotive reliability, and RoHS-compliant lead-free construction. Used for precision voltage regulation in power supply feedback paths and overvoltage protection circuits.
For engineers reviewing the PD3Z284C7V5-7 datasheet, PD3Z284C7V5-7 pinout, PD3Z284C7V5-7 application, or PD3Z284C7V5-7 equivalent, key selection criteria include zener voltage stability across temperature (TC = +2.5 to +5.3 mV/°C), low dynamic impedance under 10mA bias, thermal resistance of 250°C/W on standard polyimide PCB, and cathode-band polarity marking for unambiguous orientation during automated placement.
Technical Context
This Zener diode operates in reverse breakdown mode with specified test current IZT = 5mA and knee current IZK = 1.0mA. Its voltage regulation performance is defined across -65°C to +150°C operating range, with temperature coefficient ranging from +2.5 to +5.3 mV/°C - indicating positive drift above 6.2V nominal ratings.
The device uses planar die construction in a PowerDI323 molded plastic case rated UL 94V-0, with matte tin-plated copper leadframe ensuring MIL-STD-202-compliant solderability. Moisture sensitivity level is J-STD-020D Level 1, enabling uncomplicated reflow processing without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5V nominal, 7.0–7.9V min/max at 5mA - defines stable reference point for feedback loops |
| Power Dissipation (PD) | 500mW - limits continuous power handling on standard FR-4 or polyimide PCBs |
| Zener Impedance (ZZT) | 10Ω max at 5mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | ≤1µA at 5.0V - guarantees low quiescent current in standby regulation circuits |
| Thermal Resistance (RθJA) | 250°C/W - determines junction temperature rise under 500mW dissipation on recommended pad layout |
| Temperature Coefficient | +2.5 to +5.3 mV/°C - quantifies voltage drift magnitude per degree Celsius change |
| Package | PowerDI323 - 2.5 × 1.9 × 1.25 mm footprint enables high-density PCB layouts |
Pinout & Package
PowerDI323 is a two-terminal surface-mount package with cathode band marking on the top surface. The anode and cathode are accessed via exposed metal pads on opposite ends of the molded body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or low-side reference in Zener regulator | Low-impedance connection to PCB ground plane; requires adequate copper area for thermal relief |
| Cathode | Current exit terminal in reverse breakdown; connects to regulated node or feedback divider | Marked by visible band; must be routed with controlled impedance when used in noise-sensitive analog references |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Enables tight VZ tolerance control and repeatable Zener impedance across production lots |
| AEC-Q101 qualification | Validates reliability for automotive under-hood applications including engine control and lighting modules |
| Green molding compound (no Br/Sb) | Meets halogen-free requirements for industrial and consumer electronics compliance programs |
| Moisture Sensitivity Level 1 | Eliminates pre-bake requirement before SMT reflow, reducing manufacturing overhead |
Applications
| Automotive LED Headlamp Driver | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Clamping transient overvoltage spikes induced by relay coil flyback in 12V headlamp driver circuits. IC Role / Device Role / Timing Role: Zener acts as shunt overvoltage protector across gate-source of MOSFET switch. Use Value: Limits gate voltage to ≤7.9V, preventing MOSFET avalanche failure while maintaining fast response (<10ns) due to low junction capacitance (~25pF). | Use Scenario: Protecting 24V analog input front-end of programmable logic controller against ESD and surge events. IC Role / Device Role / Timing Role: Primary clamping element in multi-stage TVS/Zener protection network. Use Value: Absorbs up to 500mW surge energy without degradation, holding protected node below 8.5V during 1kV EFT bursts per IEC 61000-4-4. |
| DC-DC Converter Feedback Reference | Medical Infusion Pump Voltage Monitor |
Use Scenario: Providing stable 7.5V reference for optocoupler-based feedback loop in isolated 5V/12V flyback converter. IC Role / Device Role / Timing Role: Precision voltage reference source setting output regulation threshold. Use Value: Maintains ±5% output accuracy over -40°C to +105°C ambient due to predictable TC and low ZZT. | Use Scenario: Monitoring battery voltage in portable infusion pump to trigger low-battery alert at 7.0V threshold. IC Role / Device Role / Timing Role: Threshold detector in comparator-based undervoltage lockout circuit. Use Value: Delivers <1% hysteresis error across 0–40°C operating range, meeting IEC 60601-1 safety margin requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| D3Z7V5BF-7 | Same 7.5V rating, lower ZZT (5Ω max), higher PD (1W), SOD-323 package | Higher power handling supports longer surge duration; smaller SOD-323 footprint reduces board area | Select when >500mW pulse energy absorption or space-constrained layouts are required |
| BZX384-C7V5,115 | 7.5V rating, ZZT = 30Ω max, PD = 300mW, SOD-323 package, no AEC-Q101 | Limited to commercial-grade applications; unsuitable for automotive environments | Choose only for cost-sensitive non-automotive designs where 300mW derating is acceptable |
Compared with D3Z7V5BF-7 and BZX384-C7V5,115, PD3Z284C7V5-7 offers optimal balance of AEC-Q101 reliability, 500mW capability, and PowerDI323 thermal performance - making it preferred for automotive and industrial applications requiring validated long-term stability.
Availability
PD3Z284C7V5-7 is available at Aetrix Electronics and suitable for automotive LED drivers, industrial PLC input protection, DC-DC converter feedback networks, and medical device voltage monitoring requiring stable component supply and traceable sourcing.
Supply support for PD3Z284C7V5-7 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 and manufacturing operations across Asia and the Americas.
The PD3ZxxC series belongs to Diodes' automotive-qualified Zener diode product line, engineered specifically for robust voltage reference and clamping in harsh-environment applications including engine control units, body electronics, and ADAS subsystems.
FAQ
What is the maximum steady-state power dissipation for PD3Z284C7V5-7?
The absolute maximum continuous power dissipation is 500mW at 25°C ambient, derating linearly to zero at 150°C per the published power derating curve. This assumes mounting on a polyimide PCB with Diodes' recommended pad layout per AP02001. Exceeding this limit risks thermal runaway and permanent parameter shift.
Does PD3Z284C7V5-7 have automotive qualification?
Yes, PD3Z284C7V5-7 is qualified to AEC-Q101 standards for high-reliability automotive applications. This includes stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life - confirming suitability for under-hood and cabin electronics where extended lifetime and failure-rate predictability are critical.
How is polarity identified on the PowerDI323 package?
Polarity is indicated by a cathode band printed on the top surface of the PowerDI323 package. The band aligns with the cathode terminal, which is the left-hand pad in the standard top-view orientation (with marking side up and band toward the viewer's left). This matches the pin 1 indicator in Diodes' official package drawings.
Is PD3Z284C7V5-7 recommended for new designs?
No - Diodes Incorporated explicitly marks this series as "NOT RECOMMENDED FOR NEW DESIGNS" in the datasheet, advising migration to the D3ZxxBF series. While PD3Z284C7V5-7 remains available and fully functional, new projects should evaluate D3Z7V5BF-7 for improved Zener impedance, higher power rating, and continued long-term supply assurance.
PD3Z284C7V5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- PowerDI™ 323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±6.04%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 323
PD3Z284C7V5-7 FAQ
1.How can I place an order for PD3Z284C7V5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for PD3Z284C7V5-7 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 PD3Z284C7V5-7 reliable?
The price and inventory of PD3Z284C7V5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PD3Z284C7V5-7 is usually 5 days.
3.What payment methods are accepted for PD3Z284C7V5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PD3Z284C7V5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PD3Z284C7V5-7?
PD3Z284C7V5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PD3Z284C7V5-7 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 PD3Z284C7V5-7?
For technical support, including PD3Z284C7V5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PD3Z284C7V5-7 requirements.
6.How does Aetrix verify that PD3Z284C7V5-7 is sourced from the original manufacturer or authorized distributors?
All PD3Z284C7V5-7 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 PD3Z284C7V5-7 meets industry standards.
7.What is the process for return or replacement of PD3Z284C7V5-7?
All PD3Z284C7V5-7 units undergo pre-shipment inspection (PSI). If there is an issue with PD3Z284C7V5-7, 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 PD3Z284C7V5-7 part is unused and in its original packaging.
Return procedure for PD3Z284C7V5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PD3Z284C7V5-7 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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