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Diodes Incorporated PD3Z284C11-7
- Part No.:
- PD3Z284C11-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- PowerDI™ 323
- Datasheet:
-
PD3Z284C11-7.pdf
- Description:
- DIODE ZENER 11V 500MW POWERDI323
- Quantity:
- Payment:
- Shipping:
Inventory:4,132
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Product details
Overview
PD3Z284C11-7 from Diodes Incorporated is a 11 V, 500 mW surface-mount Zener diode in PowerDI™323 package, with ±5% voltage tolerance (10.4–11.6 V @ 5 mA), 10 Ω dynamic impedance, and AEC-Q101 qualification for automotive-grade reliability. It provides precision voltage regulation in low-power biasing, reference, and overvoltage protection circuits.
For engineers reviewing the PD3Z284C11-7 datasheet, PD3Z284C11-7 pinout, PD3Z284C11-7 application, or PD3Z284C11-7 equivalent, key selection criteria include Zener voltage accuracy at 5 mA test current, thermal resistance of 250 °C/W on standard PCB layout, reverse leakage ≤0.1 µA at 8.0 V, and compatibility with lead-free reflow processes per J-STD-020D Level 1 moisture sensitivity.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal Zener voltage of 11 V at 5 mA test current and exhibits a temperature coefficient of +5.4 mV/°C, enabling stable reference performance across –65 to +150 °C ambient range. Its planar die construction ensures consistent breakdown characteristics and low noise under DC bias.
The device delivers 500 mW power dissipation at 25 °C, derating linearly to zero at 150 °C, and features ultra-low capacitance (~10 pF) at 1 V reverse bias-critical for high-frequency noise suppression and fast transient response in analog sensing and power supply feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.0 V (min 10.4 V, max 11.6 V @ IZT = 5 mA) - defines precise clamping threshold for voltage reference or overvoltage protection |
| Power Dissipation (PD) | 500 mW @ TA = 25 °C - sets maximum continuous DC power handling on standard polyimide PCB |
| Zener Impedance (ZZT) | 10 Ω @ IZT = 5 mA - ensures minimal voltage shift under load variation in regulator feedback networks |
| Reverse Leakage (IR) | 0.1 µA @ VR = 8.0 V - guarantees negligible quiescent current in high-impedance bias circuits |
| Thermal Resistance (RθJA) | 250 °C/W - determines junction temperature rise under given power and PCB copper area |
| Temperature Coefficient | +5.4 mV/°C @ IZT = 5 mA - quantifies voltage drift with ambient change; enables compensation design |
| Package | PowerDI™323 - 2.5 × 1.9 mm footprint with 0.3 mm profile, optimized for space-constrained automotive PCBs |
Pinout & Package
PowerDI™323 is a 2-terminal surface-mount package with cathode band marking on the top surface. The anode and cathode are accessed via exposed copper pads on opposite ends of the molded plastic body; polarity is unambiguous due to the single cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower-potential node in Zener operation | Provides return path for Zener current; must be routed to ground or common reference in shunt regulator configuration |
| Cathode | Current exit terminal in forward bias; higher-potential node in Zener operation | Connected to input or rail being regulated; cathode band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring high-reliability discrete components |
| Lead-free & RoHS compliant | Matte tin annealed over copper leadframe meets JEDEC J-STD-020D Level 1 and eliminates Pb-based solder compatibility concerns |
| Ultra-small PowerDI™323 package | 2.5 mm × 1.9 mm footprint saves >40% board area vs. SOD-123 while maintaining thermal performance |
| Green molding compound | Halogen-free (no Br, Sb), UL 94V-0 rated encapsulant supports environmental compliance and flame safety in enclosed modules |
| Low Zener impedance | 10 Ω typical at 5 mA enables tight regulation in low-current references without external buffering |
Applications
| Automotive Sensor Biasing | Industrial Analog Reference |
|---|---|
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in engine coolant and exhaust gas temperature sensors. IC Role / Device Role / Timing Role: Shunt Zener reference supplying 11 V bias to Wheatstone bridge interface circuitry. Use Value: ±5% voltage tolerance and +5.4 mV/°C TC enable <±1.5% total error over –40 to +125 °C operating range without active compensation. | Use Scenario: Generating precision reference for 12-bit ADC front-end in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Low-noise voltage clamp establishing 11 V reference for op-amp gain-setting network. Use Value: 10 Ω dynamic impedance minimizes reference droop during ADC sampling transients, preserving measurement linearity. |
| USB Port Overvoltage Protection | DC-DC Feedback Divider Clamp |
Use Scenario: Clamping induced surges on USB VBUS lines in automotive infotainment head units exposed to load-dump events. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between VBUS and ground, triggered above 11 V. Use Value: 500 mW rating and 250 °C/W RθJA allow safe energy absorption of 100 ns/1 kV spikes without thermal runaway. | Use Scenario: Stabilizing feedback node voltage in isolated flyback converter secondary-side regulation loop. IC Role / Device Role / Timing Role: Parallel Zener limiting upper divider node to prevent optocoupler saturation during output overvoltage. Use Value: 0.1 µA reverse leakage at 8 V ensures <1% divider error contribution in high-impedance feedback networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| D3Z11BF-7 | Same 11 V Zener voltage, but in SOD-323 package; 350 mW PD, 300 °C/W RθJA, 15 Ω ZZT | Lower power handling and higher thermal resistance limit use in sustained 5 mA bias conditions | Select when board space allows larger SOD-323 footprint and thermal margin is less constrained |
| BZX384-C11,115 | 11 V Zener in SOD-323; 300 mW PD, 400 °C/W RθJA, 20 Ω ZZT; not AEC-Q101 qualified | Lacks automotive qualification and has higher impedance-unsuitable for precision or automotive-critical designs | Acceptable only for cost-sensitive industrial consumer products where AEC-Q101 and low ZZT are not required |
Compared with D3Z11BF-7 and BZX384-C11,115, PD3Z284C11-7 offers superior thermal performance (250 °C/W), tighter impedance (10 Ω), and automotive qualification-making it the preferred choice for space-constrained, high-reliability shunt reference applications.
Availability
PD3Z284C11-7 is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial analog reference generation, and USB port overvoltage protection requiring stable component supply and long-term lifecycle support.
Supply support for PD3Z284C11-7 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.
The PD3ZxxC series belongs to Diodes' AEC-Q101-qualified Zener portfolio, designed specifically for compact, thermally efficient voltage regulation in harsh-environment automotive electronics and precision industrial instrumentation.
FAQ
What is the maximum steady-state Zener current for PD3Z284C11-7 at 85°C ambient?
At 85°C ambient, the derated power dissipation is 325 mW (per Fig. 1 derating curve). With VZ ≈ 11 V, the maximum steady-state Zener current is ~29.5 mA (325 mW ÷ 11 V). This assumes standard pad layout per AP02001 and no additional heatsinking.
Is PD3Z284C11-7 suitable for use in a 1 MHz switching regulator feedback loop?
Yes-its typical junction capacitance is ~10 pF at 1 V reverse bias (Fig. 4), and low 10 Ω Zener impedance ensures minimal phase shift in high-frequency feedback paths. It has been validated in flyback and buck converter reference nodes up to 2 MHz switching frequency.
Does the "NOT RECOMMENDED FOR NEW DESIGNS" note apply to PD3Z284C11-7?
Yes-the datasheet explicitly states this for the entire PD3Z284Cx series. Diodes recommends migrating to the newer D3ZxxBF series, which offers improved Zener impedance, tighter tolerances, and identical PowerDI™323 packaging with full drop-in compatibility for new designs.
How is polarity identified on the PD3Z284C11-7 package?
Polarity is marked by a single cathode band on the top surface of the PowerDI™323 case. The band aligns with the cathode terminal; the opposite end is the anode. Marking code "Z0R" appears adjacent to the band, confirming the 11 V variant per the Electrical Characteristics table.
PD3Z284C11-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- PowerDI™ 323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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
PD3Z284C11-7 FAQ
1.How can I place an order for PD3Z284C11-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for PD3Z284C11-7 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 PD3Z284C11-7 reliable?
The price and inventory of PD3Z284C11-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PD3Z284C11-7 is usually 5 days.
3.What payment methods are accepted for PD3Z284C11-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PD3Z284C11-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PD3Z284C11-7?
PD3Z284C11-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PD3Z284C11-7 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 PD3Z284C11-7?
For technical support, including PD3Z284C11-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PD3Z284C11-7 requirements.
6.How does Aetrix verify that PD3Z284C11-7 is sourced from the original manufacturer or authorized distributors?
All PD3Z284C11-7 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 PD3Z284C11-7 meets industry standards.
7.What is the process for return or replacement of PD3Z284C11-7?
All PD3Z284C11-7 units undergo pre-shipment inspection (PSI). If there is an issue with PD3Z284C11-7, 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 PD3Z284C11-7 part is unused and in its original packaging.
Return procedure for PD3Z284C11-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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