My Inquiry
My Account
Diodes Incorporated PD3Z284C27-7
- Part No.:
- PD3Z284C27-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- PowerDI™ 323
- Datasheet:
-
PD3Z284C27-7.pdf
- Description:
- DIODE ZENER 27V 500MW POWERDI323
- Quantity:
- Payment:
- Shipping:
Inventory:5,653
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PD3Z284C27-7 from Diodes Incorporated is a 27 V, 0.5 W surface-mount Zener diode in PowerDI™323 package, rated for 2 mA test current, with 25.1–28.9 V zener voltage range, 40 Ω max zener impedance at 2 mA, and AEC-Q101 qualification for automotive reliability. It provides precision voltage regulation in space-constrained power supply feedback paths and overvoltage protection circuits.
For engineers reviewing the PD3Z284C27-7 datasheet, PD3Z284C27-7 pinout, PD3Z284C27-7 application, or PD3Z284C27-7 equivalent, this page delivers verified electrical parameters, thermal derating behavior, package dimensions, marking interpretation, and direct alternatives aligned with Diodes' official replacement guidance.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal 27 V regulation point at IZT = 2 mA. Its 40 Ω dynamic impedance (ZZT) and ±0.1 µA maximum reverse leakage (IR) at 18.9 V ensure stable reference performance under low-current bias conditions.
The device features planar die construction, "green" halogen-free molding compound (UL 94V-0), and matte tin-plated copper leadframe. Thermal resistance RθJA is 250 °C/W on standard polyimide PCB, with full power dissipation derated linearly above +25 °C ambient per Figure 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27 V nominal, 25.1–28.9 V range at IZT = 2 mA - defines regulation window for feedback sensing |
| Power Dissipation (PD) | 500 mW at TA = +25 °C - limits continuous bias current to ~18.5 mA at 27 V |
| Zener Impedance (ZZT) | 40 Ω max at IZT = 2 mA, f = 1 kHz - determines output voltage variation under load transients |
| Reverse Leakage (IR) | 0.1 µA max at VR = 18.9 V - ensures minimal quiescent current in high-impedance reference nodes |
| Thermal Resistance (RθJA) | 250 °C/W - requires ≥100 mm² copper pour for full-power operation at 70 °C ambient |
| Operating Temperature | −65 to +150 °C - supports under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: PowerDI™323 - ultra-small surface-mount plastic case (2.50 × 1.90 × 0.13 mm), UL 94V-0 rated, moisture sensitivity level 1, cathode band polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to system ground or low-side reference node; forms return path during reverse-bias regulation |
| Cathode | Zener breakdown terminal / regulated output node | Connected to feedback divider or protected rail; maintains stable voltage when reverse biased above VZ |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Enables tight VZ tolerance control and repeatable ZZT across production lots |
| PowerDI™323 footprint | 0.005 g mass and 2.5 × 1.9 mm outline - fits 0603-class PCB real estate with improved thermal pad access |
| AEC-Q101 qualification | Validated for automotive applications requiring extended temperature cycling and high-reliability stress testing |
| Halogen-free "green" compound | Meets RoHS Directive 2011/65/EU and JEDEC J-STD-020D without Br/Sb - supports eco-compliant manufacturing |
| Matte tin annealed terminals | Solderable per MIL-STD-202 Method 208 - ensures robust reflow joint integrity on OSP- or ENIG-finished boards |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Regulating feedback voltage in isolated DC-DC converter supplying microcontroller core rails. IC Role / Device Role: Precision voltage reference for optocoupler-coupled feedback loop. Use Value: 27 V Zener clamps transient overshoot while maintaining <±3% regulation accuracy across −40 to +125 °C. | Use Scenario: Overvoltage clamp on 24 V analog input channel exposed to field wiring surges. IC Role / Device Role: Primary shunt protection element before signal conditioning amplifier. Use Value: 40 Ω ZZT ensures rapid clamping response (<100 ns) to 30 V transients without latch-up. |
| Medical Infusion Pump Power Supply | Telecom Remote Radio Unit (RRU) Biasing |
Use Scenario: Reference voltage source for battery charge termination comparator in portable medical equipment. IC Role / Device Role: Stable threshold generator tolerant of wide temperature drift. Use Value: −3.5 to 0 mV/°C tempco enables <±1.5% VZ shift over −20 to +70 °C operating range. | Use Scenario: Bias voltage stabilization for GaN FET gate driver ICs in outdoor base station amplifiers. IC Role / Device Role: Local 27 V rail regulator compensating for PCB trace IR drop. Use Value: 0.1 µA IR minimizes loading on high-impedance bias networks while sustaining 27 V setpoint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| D3Z284C27-7 | Same 27 V rating, 0.5 W, PowerDI323, AEC-Q101 qualified | Direct functional replacement per Diodes' migration notice | Preferred for new designs requiring automotive qualification and long-term supply continuity |
| BZX384-C27,115 | 27 V, 300 mW, SOD-323, no AEC-Q101 certification | Limited to commercial-grade applications; lower power handling reduces surge margin | Select only for cost-sensitive non-automotive systems where 300 mW suffices and qualification is not required |
Compared with PD3Z284C27-7, D3Z284C27-7 offers identical electrical specs and enhanced long-term availability, while BZX384-C27,115 trades AEC-Q101 compliance and 0.5 W rating for lower unit cost in non-automotive use cases.
Availability
PD3Z284C27-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial programmable logic controllers, and medical infusion pump power supplies requiring stable component supply and AEC-Q101 compliance.
Supply support for PD3Z284C27-7 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' automotive-qualified Zener diode product line, engineered specifically for voltage regulation and transient suppression in harsh-environment electronic control units.
FAQ
What is the maximum reverse voltage this Zener can withstand before breakdown?
The PD3Z284C27-7 has a nominal zener voltage of 27 V at 2 mA test current, with a guaranteed breakdown range of 25.1–28.9 V. It begins regulating at the lower limit and sustains stable conduction up to its 500 mW power limit - exceeding 28.9 V risks thermal runaway unless current is strictly limited by external series resistance.
Is this part suitable for use in automotive applications?
Yes - PD3Z284C27-7 is explicitly qualified to AEC-Q101 standards, including temperature cycling, high-temperature reverse bias, and humidity testing. Its PowerDI™323 package and green molding compound meet automotive manufacturing requirements for under-hood and chassis-mounted ECUs.
How does the PowerDI™323 package compare thermally to SOD-323?
PowerDI™323 offers 250 °C/W junction-to-ambient thermal resistance on standard polyimide PCB, versus ~350–400 °C/W for typical SOD-323 devices. Its larger thermal pad area and optimized copper leadframe enable ~30% higher power handling at equivalent board area, critical for sustained 500 mW operation.
Why is this part marked "NOT RECOMMENDED FOR NEW DESIGNS"?
Diodes Incorporated issued this notice because the newer D3ZxxBF series offers identical electrical specs in the same PowerDI™323 package but with improved process control, tighter VZ tolerance, and extended lifecycle support. PD3Z284C27-7 remains fully functional and available, but D3Z284C27-7 is the recommended successor for all new designs.
PD3Z284C27-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- PowerDI™ 323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±7%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 18.9 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
PD3Z284C27-7 FAQ
1.How can I place an order for PD3Z284C27-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for PD3Z284C27-7 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 PD3Z284C27-7 reliable?
The price and inventory of PD3Z284C27-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PD3Z284C27-7 is usually 5 days.
3.What payment methods are accepted for PD3Z284C27-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PD3Z284C27-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PD3Z284C27-7?
PD3Z284C27-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PD3Z284C27-7 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 PD3Z284C27-7?
For technical support, including PD3Z284C27-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PD3Z284C27-7 requirements.
6.How does Aetrix verify that PD3Z284C27-7 is sourced from the original manufacturer or authorized distributors?
All PD3Z284C27-7 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 PD3Z284C27-7 meets industry standards.
7.What is the process for return or replacement of PD3Z284C27-7?
All PD3Z284C27-7 units undergo pre-shipment inspection (PSI). If there is an issue with PD3Z284C27-7, 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 PD3Z284C27-7 part is unused and in its original packaging.
Return procedure for PD3Z284C27-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PD3Z284C27-7 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
