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Diodes Incorporated DPC817W-A-TU
- Part No.:
- DPC817W-A-TU
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-DIP (0.300", 7.62mm)
- Datasheet:
-
DPC817W-A-TU.pdf
- Description:
- PHOTO COUPLER MDIP-4 TUBE 100PCS
- Quantity:
- Payment:
- Shipping:
Inventory:3,614
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Product details
Overview
DPC817W-A-TU from Diodes Incorporated is a high-isolation, single-channel phototransistor output optocoupler in MDIP-4 package, featuring 80–160% CTR at IF = 5 mA / VCE = 5 V, 5000 VRMS input-output isolation voltage, and operation from –55°C to +110°C. It provides galvanic signal transfer for feedback control in offline AC/DC power supplies and isolated I/O interfacing in industrial PLC modules.
For engineers reviewing the DPC817W-A-TU datasheet, DPC817W-A-TU pinout, DPC817W-A-TU application, or DPC817W-A-TU equivalent, key selection criteria include CTR rank (A-grade), MDIP-4 creepage/clearance advantages over standard DIP-4, VDE-enabling safety certification path, and guaranteed performance across extended temperature range without derating.
Technical Context
The DPC817W-A-TU integrates an AlGaAs infrared LED coupled to a silicon NPN phototransistor with base terminal unconnected. Its current transfer ratio is defined under standardized DC conditions (IF = 5 mA, VCE = 5 V), and its 35 V VCEO rating supports use in low-voltage secondary-side switching circuits.
Isolation performance meets UL1577 (5000 VRMS, 1 min) and VDE EN IEC 60747-5-5 requirements. The device operates without external biasing-collector-emitter saturation voltage remains ≤0.2 V at IC = 1 mA / IF = 20 mA-enabling direct interface with logic-level inputs and microcontroller GPIOs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CTR (Min) | 80% at IF = 5 mA, VCE = 5 V - ensures reliable logic-level output drive under worst-case aging and temperature conditions |
| VISO | 5000 VRMS - enables reinforced insulation per IEC 62368-1 for primary-secondary barrier in Class II power supplies |
| VCEO | 35 V - supports direct connection to 24 V DC control rails without external collector resistor limiting |
| tR/tF | 18 µs max - sufficient for PWM feedback loop bandwidth up to ~30 kHz in flyback controllers |
| TOPR | –55°C to +110°C - qualified for under-hood automotive auxiliary systems and industrial motor drives |
| VF (Typ) | 1.25 V at IF = 20 mA - minimizes LED drive power loss and simplifies current-limiting resistor selection |
| VCE(SAT) | 0.1 V typ at IF = 20 mA, IC = 1 mA - reduces output stage conduction loss in digital isolation applications |
Pinout & Package
Package: MDIP-4 (Mini Dual In-line Package, 4-pin), 7.62 mm lead pitch, 10.16 mm body width, RoHS-compliant matte tin-plated leads, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | LED anode input - requires series current-limiting resistor referenced to driving source |
| 2 | Cathode | LED cathode return - connects to ground or low-side switch node |
| 3 | Emitter | Phototransistor emitter output - typically grounded to establish common reference for collector pull-up |
| 4 | Collector | Phototransistor collector output - connects to pull-up resistor or logic input; carries switched load current |
Key Features
| Feature | Design Value |
|---|---|
| High CTR consistency | A-rank (80–160%) enables stable closed-loop gain in voltage-mode SMPS feedback without trimming |
| Reinforced isolation | 5000 VRMS withstand supports 250 VRMS working voltage with >2× safety margin per IEC 62368-1 Annex G |
| Extended temperature range | –55°C to +110°C operation eliminates need for thermal derating in sealed enclosures or engine bay environments |
| Green compound & lead-free | Halogen- and antimony-free molded plastic (Br+Cl <1500 ppm, Sb <1000 ppm) meets IPC-1752A Tier 1 reporting |
| MDIP-4 footprint | Wider body (10.16 mm vs. 7.62 mm for DIP-4) increases creepage distance to ≥8.0 mm, easing PCB layout for reinforced insulation |
Applications
| AC/DC Power Supply Feedback | Industrial Digital I/O Isolation |
|---|---|
|
Use Scenario: Voltage feedback loop in 30 W offline flyback converter powering IoT gateway. IC Role / Device Role / Timing Role: Optically isolates secondary-side TL431 error amplifier output from primary-side PWM controller (e.g., UC384x). Use Value: Maintains regulation accuracy across line/load transients while meeting 4 kV surge immunity and 2 MOPP isolation requirements. |
Use Scenario: Isolated 24 V DC digital input module in programmable logic controller rack. IC Role / Device Role / Timing Role: Converts field-side dry-contact closure into clean 3.3 V logic signal for FPGA-based input scanner. Use Value: Rejects common-mode noise up to 1500 Vp and sustains operation at 70°C ambient without CTR degradation. |
| Automotive Body Control Unit | Medical Equipment Signal Conditioning |
|
Use Scenario: Isolated wake-up signal path from door handle sensor to BCM microcontroller in 12 V battery system. IC Role / Device Role / Timing Role: Transfers low-duty-cycle interrupt pulses across battery-ground and MCU-ground domains. Use Value: Supports AEC-Q100 stress qualification path and operates reliably at –40°C cold-crank and +105°C under-dash conditions. |
Use Scenario: Patient-isolated analog front-end in portable ECG monitor with USB host interface. IC Role / Device Role / Timing Role: Breaks ground loops between electrode-sensing circuitry and USB data transmission path. Use Value: Meets IEC 60601-1 2× MOPP requirement with <1 pF floating capacitance minimizing leakage current (<10 µA). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar optocoupler feedback and isolation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PC817XNIP0X | Same MDIP-4 package but CTR 130–260% (B-rank); VDE-certified variant available | Higher CTR improves noise margin in low-IF designs but may require resistor recalibration in existing feedback networks | Select when tighter CTR tolerance or VDE certification is mandatory; verify loop stability with increased gain |
| EL817(A)-F | SL-4 package (surface-mount), same CTR rank A (80–160%), identical electrical specs except 0.6 pF typical CF | Enables automated assembly and higher board density but reduces creepage to 5.5 mm - unsuitable for 2 MOPP designs | Choose for space-constrained consumer electronics where creepage >6 mm is not required and reflow compatibility is critical |
Compared with PC817XNIP0X and EL817(A)-F, DPC817W-A-TU uniquely balances A-rank CTR consistency, MDIP-4 mechanical robustness for through-hole reliability, and certified 5000 VRMS isolation - making it optimal for industrial power and safety-critical signal transfer where long-term parametric stability matters.
Availability
DPC817W-A-TU is available at Aetrix Electronics and suitable for AC/DC power supply feedback, industrial digital I/O isolation, and automotive body control unit designs requiring stable component supply across extended temperature and safety-critical operating conditions.
Supply support for DPC817W-A-TU 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 DPC817 Series belongs to Diodes' optocoupler product line, engineered specifically for high-reliability signal isolation in power conversion, industrial automation, and safety-regulated equipment where long-term CTR stability and certified isolation integrity are essential.
FAQ
What is the maximum recommended forward current for continuous operation?
The absolute maximum rated forward current (IF) is 60 mA, but the device is characterized and optimized for 5–20 mA operation. Continuous use above 20 mA accelerates LED degradation and reduces CTR lifetime stability; Diodes recommends 10–15 mA for 10-year reliability in industrial applications.
Does DPC817W-A-TU support base connection for improved speed or linearity?
No - the phototransistor has an unconnected base terminal (3-pin configuration). This simplifies layout and improves noise immunity but limits switching speed to 18 µs rise/fall times. For faster response, Diodes offers base-connected variants like DPC817S series, which are not pin-compatible.
Can this part be used in designs requiring IEC 60601-1 medical isolation?
Yes - with proper PCB layout (≥8 mm creepage, reinforced insulation spacing), the 5000 VRMS isolation and VDE EN IEC 60747-5-5 certification support 2× MOPP compliance. However, full system-level testing per clause 8.8.3 is required; DPC817W-A-TU alone does not constitute full certification.
How does MDIP-4 differ electrically from standard DIP-4 in the DPC817 family?
MDIP-4 has identical electrical characteristics and pinout as DIP-4 but features a wider body (10.16 mm vs. 7.62 mm), increasing creepage distance to ≥8.0 mm. This allows simplified compliance with reinforced insulation standards without additional slotting or coating - no electrical parameter differences exist between packages.
DPC817W-A-TU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- DPC817
- Package/Case:
- 4-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Channels:
- 1
- Voltage - Isolation:
- 5000Vrms
- Current Transfer Ratio (Min):
- 80% @ 5mA
- Current Transfer Ratio (Max):
- 160% @ 5mA
- Turn On / Turn Off Time (Typ):
- -
- Rise / Fall Time (Typ):
- 18µs, 18µs (Max)
- Input Type:
- DC
- Output Type:
- Transistor
- Voltage - Output (Max):
- 35V
- Current - Output / Channel:
- 50mA
- Voltage - Forward (Vf) (Typ):
- 1.25V
- Current - DC Forward (If) (Max):
- 60 mA
- Vce Saturation (Max):
- 200mV
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -55°C ~ 110°C
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 4-DIP
DPC817W-A-TU FAQ
1.How can I place an order for DPC817W-A-TU through Aetrix?
Please submit a Request for Quotation (RFQ) for DPC817W-A-TU 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 DPC817W-A-TU reliable?
The price and inventory of DPC817W-A-TU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DPC817W-A-TU is usually 5 days.
3.What payment methods are accepted for DPC817W-A-TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DPC817W-A-TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DPC817W-A-TU?
DPC817W-A-TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DPC817W-A-TU 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 DPC817W-A-TU?
For technical support, including DPC817W-A-TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DPC817W-A-TU requirements.
6.How does Aetrix verify that DPC817W-A-TU is sourced from the original manufacturer or authorized distributors?
All DPC817W-A-TU 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 DPC817W-A-TU meets industry standards.
7.What is the process for return or replacement of DPC817W-A-TU?
All DPC817W-A-TU units undergo pre-shipment inspection (PSI). If there is an issue with DPC817W-A-TU, 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 DPC817W-A-TU part is unused and in its original packaging.
Return procedure for DPC817W-A-TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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