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Diodes Incorporated PD3Z284C33-7
- Part No.:
- PD3Z284C33-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- PowerDI™ 323
- Datasheet:
-
PD3Z284C33-7.pdf
- Description:
- DIODE ZENER 33V 500MW POWERDI323
- Quantity:
- Payment:
- Shipping:
Inventory:7,109
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Product details
Overview
PD3Z284C33-7 from Diodes Incorporated is a 33 V, 0.5 W surface-mount Zener diode in PowerDI™323 package, featuring 31.0–35.0 V zener voltage range at 2 mA test current, 275 Ω maximum zener impedance at 2 mA, and -3.5 to +0 mV/°C temperature coefficient. It serves as precision voltage reference or overvoltage clamp in low-power analog sensing circuits.
For engineers reviewing the PD3Z284C33-7 datasheet, PD3Z284C33-7 pinout, PD3Z284C33-7 application, or PD3Z284C33-7 equivalent, key selection criteria include zener voltage tolerance (±3.0%), thermal resistance (250 °C/W), AEC-Q101 qualification, and compatibility with automated SMT assembly on polyimide PCBs.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage regulation across ambient temperatures from –65 °C to +150 °C. Its planar die construction ensures stable leakage performance and low capacitance (≈10 pF at 1 VR), critical for noise-sensitive reference nodes.
The device uses a cathode-band polarity marking and matte tin–annealed copper leadframe for reliable solderability per MIL-STD-202 Method 208. Its PowerDI323 package meets UL 94V-0 flammability rating and J-STD-020D Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 33 V nominal, 31.0–35.0 V range at IZT = 2 mA - defines stable regulation window under low-current bias |
| Power Dissipation (PD) | 500 mW - limits continuous power handling on standard polyimide PCB with recommended pad layout |
| Zener Impedance (ZZT) | 275 Ω max at IZT = 2 mA - determines output voltage deviation under load transients |
| Reverse Current (IR) | 0.1 µA max at VR = 23.1 V - ensures minimal leakage in high-impedance reference paths |
| Temp. Coefficient (TC) | –3.5 to 0 mV/°C - enables predictable drift compensation in temperature-stable references |
| Thermal Resistance (RθJA) | 250 °C/W - sets junction-to-ambient rise under full power, guiding thermal pad design |
| Package | PowerDI323 - 2.5 × 1.9 mm footprint with 0.3 mm typical height, optimized for space-constrained layouts |
Pinout & Package
PowerDI323 is a 2-terminal surface-mount package with cathode band marking. Terminals are anode (unmarked end) and cathode (banded end); no internal connections beyond the two leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration |
| Cathode | Breakdown voltage reference terminal | Marked with band; connects to regulated output or clamping node |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Green molding compound | Halogen-free (no Br, Sb), UL 94V-0 rated - supports RoHS compliance and flame safety |
| Low capacitance | ~10 pF at 1 VR - minimizes signal coupling in high-frequency sensor interfaces |
| Matte tin lead finish | Solderable per MIL-STD-202 Method 208 - ensures robust reflow joint integrity in volume manufacturing |
Applications
| Industrial Sensor Reference | Automotive Body Control Module |
|---|---|
Use Scenario: Providing stable 33 V reference for 16-bit ADC biasing in factory-floor pressure transducers. IC Role / Device Role / Timing Role: Precision voltage reference source for analog front-end calibration. Use Value: ±3.0% VZ tolerance and <0.1 µA leakage maintain ADC offset accuracy over –40 to +85 °C. | Use Scenario: Clamping transient spikes on LIN bus power rail in door module ECUs. IC Role / Device Role / Timing Role: Overvoltage protection element absorbing load-dump energy. Use Value: 500 mW power rating and 275 Ω ZZT limit clamped voltage excursion to <35 V during ISO 7637-2 pulses. |
| Medical Portable Monitor | Smart Energy Meter |
Use Scenario: Regulating bias supply for op-amp-based ECG signal conditioning stage. IC Role / Device Role / Timing Role: Low-noise voltage regulator for analog signal chain. Use Value: 10 pF capacitance and –3.5 mV/°C TC reduce common-mode noise and thermal drift in differential amplifiers. | Use Scenario: Stabilizing auxiliary 33 V rail powering metrology IC and RTC in utility meters. IC Role / Device Role / Timing Role: Standby voltage reference maintaining timekeeping accuracy during brownouts. Use Value: AEC-Q101 qualification and 150 °C TJ rating ensure long-term stability in sealed outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| D3Z33BF-7 | Same 33 V rating, 0.5 W, PowerDI323, but improved ZZT = 150 Ω @ 5 mA and tighter VZ tolerance (±2.0%) | Higher test current (5 mA vs. 2 mA) shifts operating point; better for active bias networks | Select when lower dynamic impedance and tighter regulation are required at higher bias currents |
| BZX384-C33,115 | 33 V, 0.3 W, SOD323 package; VZ = 31.3–34.7 V @ 5 mA; ZZT = 90 Ω; no AEC-Q101 rating | Lower power rating and non-automotive qualification limit use to commercial-grade consumer electronics | Choose only for cost-sensitive, non-automotive designs where 300 mW suffices and AEC-Q101 is not mandated |
Compared with D3Z33BF-7 and BZX384-C33,115, PD3Z284C33-7 offers AEC-Q101 reliability at 2 mA test current with moderate ZZT, making it suitable for legacy automotive and industrial systems where existing 2 mA bias networks are fixed.
Availability
PD3Z284C33-7 is available at Aetrix Electronics and suitable for industrial sensor reference, automotive body control modules, and medical portable monitors requiring stable component supply and long-lifecycle support.
Supply support for PD3Z284C33-7 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 portfolio, engineered for voltage regulation and transient suppression in harsh-environment electronics where reliability and consistency are mandatory.
FAQ
What is the maximum reverse current for PD3Z284C33-7 at 23.1 V?
The maximum reverse current (IR) is 0.1 µA at VR = 23.1 V, measured at TA = +25 °C. This ultra-low leakage ensures minimal error in high-impedance reference divider networks and preserves battery life in always-on monitoring circuits.
Is PD3Z284C33-7 suitable for automotive applications?
Yes - it is qualified to AEC-Q101 standards, including stress tests for temperature cycling, high-temperature reverse bias, and electrostatic discharge. Its operating temperature range (–65 °C to +150 °C) and UL 94V-0 package meet automotive under-hood requirements.
How does the PowerDI323 package compare to SOD-323 in size and thermal performance?
PowerDI323 measures 2.5 × 1.9 mm with 0.3 mm typical height and RθJA = 250 °C/W on polyimide PCB; SOD-323 is slightly smaller (1.7 × 1.25 mm) but has higher thermal resistance (~350 °C/W), limiting its 0.5 W capability in sustained operation.
Why is PD3Z284C33-7 marked as "Not Recommended for New Designs"?
Diodes Incorporated recommends the newer D3ZxxBF series due to improved zener impedance, tighter voltage tolerance, and enhanced surge robustness. PD3Z284C33-7 remains fully supported for legacy production and repair, with identical pinout and footprint compatibility.
PD3Z284C33-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- PowerDI™ 323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 33 V
- Tolerance:
- ±6.06%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 23.1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 323
PD3Z284C33-7 FAQ
1.How can I place an order for PD3Z284C33-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for PD3Z284C33-7 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 PD3Z284C33-7 reliable?
The price and inventory of PD3Z284C33-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PD3Z284C33-7 is usually 5 days.
3.What payment methods are accepted for PD3Z284C33-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PD3Z284C33-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PD3Z284C33-7?
PD3Z284C33-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PD3Z284C33-7 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 PD3Z284C33-7?
For technical support, including PD3Z284C33-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PD3Z284C33-7 requirements.
6.How does Aetrix verify that PD3Z284C33-7 is sourced from the original manufacturer or authorized distributors?
All PD3Z284C33-7 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 PD3Z284C33-7 meets industry standards.
7.What is the process for return or replacement of PD3Z284C33-7?
All PD3Z284C33-7 units undergo pre-shipment inspection (PSI). If there is an issue with PD3Z284C33-7, 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 PD3Z284C33-7 part is unused and in its original packaging.
Return procedure for PD3Z284C33-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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