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Diodes Incorporated PD3Z284C3V9-7
- Part No.:
- PD3Z284C3V9-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- PowerDI™ 323
- Datasheet:
-
PD3Z284C3V9-7.pdf
- Description:
- DIODE ZENER 3.9V 500MW PWRDI323
- Quantity:
- Payment:
- Shipping:
Inventory:5,047
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Product details
Overview
PD3Z284C3V9-7 from Diodes Incorporated is a 3.9 V, 500 mW surface-mount Zener diode in PowerDI323 (Type B) package, with ±0.2 V tolerance at 5 mA test current, 90 Ω maximum Zener impedance, and 3 µA maximum reverse leakage at 1.0 V. It delivers stable voltage reference in low-power analog monitoring circuits and ESD-protected I/O clamping networks.
For engineers reviewing the PD3Z284C3V9-7 datasheet, PD3Z284C3V9-7 pinout, PD3Z284C3V9-7 application, or PD3Z284C3V9-7 equivalent, this page provides verified electrical parameters, thermal derating behavior, AEC-Q101 qualification status, and direct replacement guidance for automotive and industrial power-rail stabilization designs.
Technical Context
This Zener diode uses planar die construction to ensure tight voltage distribution and low dynamic impedance across its 3.7–4.1 V nominal range. Its 250 °C/W junction-to-ambient thermal resistance is specified under JEDEC-standard PCB mounting conditions with recommended pad layout.
The device operates over –65 °C to +150 °C and exhibits a temperature coefficient of –3.5 mV/°C at 5 mA, enabling predictable drift compensation in precision biasing networks. Reverse current remains ≤3 µA up to 1.0 V, supporting low-leakage voltage regulation in battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.9 V nominal, 3.7–4.1 V min/max at 5 mA - defines stable regulation point for 3.3 V rail clamping |
| Power Dissipation | 500 mW - supports continuous operation at ambient ≤70 °C with standard PCB copper area |
| Zener Impedance (ZZT) | 90 Ω max at 5 mA - ensures minimal output voltage shift under load transients |
| Reverse Leakage (IR) | 3 µA max at 1.0 V - enables use in ultra-low-quiescent-current sensor biasing |
| Thermal Resistance (RθJA) | 250 °C/W - requires ≥10 mm² 1-oz copper pad for full-rated power dissipation |
| Temperature Coefficient | –3.5 mV/°C - allows predictable offset correction in temperature-compensated references |
| Package | PowerDI323 (Type B) - 2.5 × 1.25 mm footprint with cathode band marking and 0.005 g mass |
Pinout & Package
PowerDI323 (Type B) is a 2-terminal surface-mount package with anode and cathode leads on opposite ends of the molded body; polarity is indicated by a cathode band on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential node in clamp or reference configuration |
| Cathode | Current exit terminal during reverse breakdown | Marked with band; tied to regulated voltage node or signal line requiring clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling and HTRB stress |
| Green compound packaging | Halogen- and antimony-free molding compound meeting UL 94V-0 flammability rating |
| Matte tin annealed terminals | Solderable per MIL-STD-202 Method 208; compatible with lead-free reflow profiles |
| Moisture sensitivity Level 1 | No dry-pack or baking required prior to assembly; safe for standard SMT lines |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Clamping CAN transceiver I/O pins against ESD and load-dump transients. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed between PHY and connector. Use Value: Limits voltage excursion to ≤4.1 V while maintaining <3 µA leakage at 1.0 V, preserving signal integrity without loading the bus. |
Use Scenario: Providing stable 3.9 V reference for 12-bit ADC biasing in pressure transducer front-end. IC Role / Device Role / Timing Role: Precision shunt reference supplying excitation current to bridge sensors. Use Value: Delivers ±0.2 V tolerance and –3.5 mV/°C TC, enabling <0.5% full-scale error over –40 to +125 °C operating range. |
| Consumer IoT Battery Management | Medical Wearable Power Monitoring |
Use Scenario: Regulating auxiliary LDO input in coin-cell-powered BLE module. IC Role / Device Role / Timing Role: Low-power Zener shunt regulator feeding 3.3 V LDO enable pin. Use Value: Draws only 3 µA at 1.0 V reverse bias, extending shelf life of CR2032-powered devices beyond 10 years. |
Use Scenario: Protecting microcontroller GPIOs from electrostatic discharge during patient contact. IC Role / Device Role / Timing Role: ESD clamp on biopotential acquisition channel inputs. Use Value: Withstands >8 kV HBM per AEC-Q101, limiting voltage to 4.1 V while adding <0.5 pF parasitic capacitance to preserve bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-C3V9 | Same 3.9 V nominal, but 300 mW rating and SOD323 package (1.7 × 1.3 mm) | Lower power handling limits use in sustained-clamp scenarios; smaller footprint saves board space | Select when board area is constrained and peak power <300 mW; verify thermal margin on thin PCBs |
| MMSZ4685 | 3.9 V nominal, 500 mW, but ±5% tolerance (3.7–4.1 V same), higher ZZT = 120 Ω max | Looser impedance impacts regulation accuracy under dynamic loads; identical AEC-Q101 qualification | Acceptable where cost is prioritized over impedance-critical regulation; confirm system ripple budget |
Compared with BZX384-C3V9 and MMSZ4685, PD3Z284C3V9-7 offers superior thermal performance (250 °C/W vs. ~300 °C/W), tighter Zener impedance (90 Ω vs. 120 Ω), and identical AEC-Q101 compliance-making it optimal for thermally demanding automotive and industrial environments.
Availability
PD3Z284C3V9-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, and medical wearable power monitoring requiring stable component supply and AEC-Q101 assurance.
Supply support for PD3Z284C3V9-7 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.
PD3Z284C3V9-7 belongs to the PD3Z284C series of AEC-Q101-qualified Zener diodes designed specifically for automotive and industrial voltage regulation and ESD protection in space-constrained, high-reliability applications.
FAQ
What is the maximum continuous power dissipation for PD3Z284C3V9-7 at 100°C ambient?
At 100°C ambient, the device's power dissipation must be derated linearly from 500 mW at 25°C using the 250 °C/W RθJA. This yields 500 mW × (1 − (100 − 25)/250) = 375 mW maximum continuous power. Derating follows Fig. 1 in DS30702 Rev. 11-2.
Is PD3Z284C3V9-7 suitable for bidirectional ESD protection?
No - PD3Z284C3V9-7 is a unidirectional Zener diode optimized for reverse-bias voltage regulation. For bidirectional ESD protection, Diodes Incorporated recommends the D3V3M1U2S series TVS diodes, which feature symmetrical clamping in both polarities.
How does the –3.5 mV/°C temperature coefficient affect circuit accuracy?
The negative temperature coefficient causes the Zener voltage to decrease by 3.5 mV per °C rise above 25°C. Over a –40°C to +125°C range, this produces a total shift of –525 mV, requiring compensation in precision references via resistor networks or complementary diodes.
Can PD3Z284C3V9-7 be used in place of PD3Z284C3V9 without the "-7" suffix?
No - the "-7" suffix denotes tape-and-reel packaging (3000 units/reel) and PowerDI323 (Type B) package revision. The bare part number PD3Z284C3V9 is obsolete; only PD3Z284C3V9-7 is currently manufactured and qualified per DS30702 Rev. 11-2.
PD3Z284C3V9-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- PowerDI™ 323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.9 V
- Tolerance:
- ±5.13%
- 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 (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 323
PD3Z284C3V9-7 FAQ
1.How can I place an order for PD3Z284C3V9-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for PD3Z284C3V9-7 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 PD3Z284C3V9-7 reliable?
The price and inventory of PD3Z284C3V9-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PD3Z284C3V9-7 is usually 5 days.
3.What payment methods are accepted for PD3Z284C3V9-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PD3Z284C3V9-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PD3Z284C3V9-7?
PD3Z284C3V9-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PD3Z284C3V9-7 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 PD3Z284C3V9-7?
For technical support, including PD3Z284C3V9-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PD3Z284C3V9-7 requirements.
6.How does Aetrix verify that PD3Z284C3V9-7 is sourced from the original manufacturer or authorized distributors?
All PD3Z284C3V9-7 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 PD3Z284C3V9-7 meets industry standards.
7.What is the process for return or replacement of PD3Z284C3V9-7?
All PD3Z284C3V9-7 units undergo pre-shipment inspection (PSI). If there is an issue with PD3Z284C3V9-7, 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 PD3Z284C3V9-7 part is unused and in its original packaging.
Return procedure for PD3Z284C3V9-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PD3Z284C3V9-7 Tags
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