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Diodes Incorporated DPC817W-C-TU
- Part No.:
- DPC817W-C-TU
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-DIP (0.300", 7.62mm)
- Datasheet:
-
DPC817W-C-TU.pdf
- Description:
- PHOTO COUPLER MDIP-4 TUBE 100PCS
- Quantity:
- Payment:
- Shipping:
Inventory:4,451
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Product details
Overview
DPC817W-C-TU from Diodes Incorporated is a high-reliability phototransistor-based optocoupler in MDIP-4 package, featuring 200–400% current transfer ratio (CTR) at IF = 5 mA and VCE = 5 V, 35 V collector-emitter breakdown voltage (BVCEO), and 5000 VRMS input-output isolation voltage - deployed for feedback control in isolated DC-DC converters and industrial I/O signal conditioning.
For engineers reviewing the DPC817W-C-TU datasheet, DPC817W-C-TU pinout, DPC817W-C-TU application, or DPC817W-C-TU equivalent, this page delivers verified CTR rank C specifications, UL/VDE safety certifications, thermal performance across –55°C to +110°C, and direct comparison with functionally aligned alternatives for industrial power supply and PLC interface design.
Technical Context
This device integrates a GaAs infrared LED coupled to a silicon NPN phototransistor in a single molded plastic package. Its operation relies on optical coupling to achieve galvanic isolation between input and output circuits without shared ground or power domains.
The phototransistor exhibits CTR ≥200% under standard test conditions (IF = 5 mA, VCE = 5 V), with guaranteed VCEO = 35 V and response times ≤18 µs (rise/fall) into 100 Ω load - enabling stable closed-loop regulation in flyback and forward converter feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CTR Range | 200–400% at IF = 5 mA, VCE = 5 V - ensures robust feedback gain margin in aging-sensitive power supply designs |
| Isolation Voltage | 5000 VRMS - meets reinforced insulation requirements for Class I/II AC-DC adapters and industrial mains-connected systems |
| BVCEO | 35 V - supports direct connection to low-voltage secondary-side controllers (e.g., TL431, UC384x) without external clamping |
| VCE(SAT) | 0.1–0.2 V at IF = 20 mA, IC = 1 mA - minimizes output-stage conduction loss in linear feedback configurations |
| Operating Temp | –55°C to +110°C - validated for extended-life deployment in automotive engine bay and outdoor telecom equipment |
| Response Time | ≤18 µs rise/fall - sufficient for PWM frequencies up to ~30 kHz in isolated error amplifier loops |
| Moisture Sensitivity | Level 1 per J-STD-020 - allows standard SMT reflow without baking preconditioning |
Pinout & Package
Package: MDIP-4 (Mini-Dual In-line Package, 4-pin), 9.66 mm × 7.62 mm body, 2.54 mm lead pitch, matte tin-plated leads, RoHS-compliant "Green" compound (UL 94V-0).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | LED anode input | Positive terminal of infrared emitter; requires series resistor to limit IF ≤60 mA |
| 2 (Cathode) | LED cathode input | Ground return path for input LED; polarity dot marks Pin 1 |
| 3 (Emitter) | Phototransistor emitter | Common reference node for output stage; typically tied to secondary-side ground |
| 4 (Collector) | Phototransistor collector | Active output node; connects to pull-up resistor and controller feedback pin (e.g., COMP of PWM IC) |
Key Features
| Feature | Design Value |
|---|---|
| High CTR Rank C | 200–400% minimum gain enables tighter loop stability and reduced compensation component count in feedback networks |
| 5000 VRMS Isolation | Validated per UL1577 and VDE EN IEC 60747-5-5 - eliminates need for additional creepage/clearance PCB layout effort |
| Extended Temperature Range | –55°C to +110°C operation supports deployment in unheated outdoor enclosures and under-hood automotive modules |
| Lead-Free & Halogen-Free | RoHS 3 compliant with <900 ppm Br/Cl and <1000 ppm Sb - satisfies environmental compliance for global industrial OEM shipments |
| MDIP-4 Package | Reduced footprint vs. standard DIP-4 (10.16 mm vs. 8.57 mm eA) - improves board density in space-constrained power modules |
Applications
| AC-DC Adapter Feedback | PLC Digital Input Isolation |
|---|---|
|
Use Scenario: Provides isolated voltage feedback from secondary side to primary-side PWM controller in 5–65 W offline flyback converters. IC Role / Device Role / Timing Role: Optically coupled error amplifier output stage - translates TL431 reference deviation into proportional collector current for COMP pin modulation. Use Value: CTR ≥200% ensures full controller activation even after 10+ years of LED degradation; 5000 VRMS isolation meets IEC 62368-1 basic insulation requirements. |
Use Scenario: Interfaces 24 V DC field sensors to 3.3 V/5 V microcontroller inputs in industrial programmable logic controllers. IC Role / Device Role / Timing Role: Signal-level galvanic isolator - blocks ground loops and common-mode transients while passing digital ON/OFF states. Use Value: 18 µs response time supports 20 kHz input polling rates; –55°C to +110°C rating ensures reliability in factory-floor environments with wide ambient swings. |
| Motor Drive Enable Isolation | Medical Equipment Safety Barrier |
|
Use Scenario: Transfers enable/disable signals from logic-level MCU to high-voltage gate driver stages in BLDC motor inverters. IC Role / Device Role / Timing Role: High-voltage signal isolator - decouples low-voltage control domain from 300–600 V power domain while preserving timing integrity. Use Value: BVCEO = 35 V accommodates direct connection to driver IC enable pins; MDIP-4 creepage >8 mm satisfies IEC 61800-5-1 reinforced insulation spacing. |
Use Scenario: Isolates patient-connected sensor front-ends from main processing unit in Class II medical devices (e.g., infusion pumps, ECG monitors). IC Role / Device Role / Timing Role: Safety-critical barrier component - prevents hazardous leakage current from mains-derived power supplies reaching patient-accessible circuits. Use Value: UL1577 and VDE certification confirms compliance with IEC 60601-1 2× MOPP requirements; RoHS/halogen-free construction meets ISO 10993 biocompatibility support criteria. |
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 |
|---|---|---|---|
| TLP185(GB-TP,F) | CTR range 130–260%, same MDIP-4 package, VCEO = 80 V, higher BVCEO but lower CTR min | Better suited for high-side switch monitoring where VCEO > 50 V is required; less margin for long-term CTR drift | Select when higher output voltage tolerance is critical and CTR aging margin can be managed via circuit design |
| PC817XNIP0X | CTR range 200–400%, same DIP-4 footprint, VCEO = 35 V, but only UL certified (no VDE) | Acceptable for non-European industrial equipment where VDE EN IEC 60747-5-5 is not mandated | Choose for cost-sensitive designs where dual safety certification is unnecessary and DIP-4 board real estate is available |
Compared with TLP185(GB-TP,F) and PC817XNIP0X, DPC817W-C-TU uniquely combines VDE+UL dual certification, MDIP-4 space savings, and guaranteed 200% CTR minimum - making it optimal for compact, globally certified power supplies requiring long-term gain stability.
Availability
DPC817W-C-TU is available at Aetrix Electronics and suitable for industrial power supplies, PLC I/O modules, and medical auxiliary power systems requiring stable component supply, long-lifecycle assurance, and dual-safety-certified isolation.
Supply support for DPC817W-C-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with manufacturing in IATF 16949-certified facilities and broad distribution through authorized channels.
The DPC817 Series targets cost-effective, safety-certified galvanic isolation for power conversion and industrial control - emphasizing CTR consistency, high-isolation integrity, and extended temperature resilience in compact packages.
FAQ
What is the maximum forward current rating for DPC817W-C-TU?
The absolute maximum forward current (IF) is 60 mA per the DS45855 datasheet. Continuous operation above 50 mA requires thermal derating; typical design practice uses 5–20 mA with a series current-limiting resistor to ensure LED lifetime >100,000 hours at +110°C ambient.
Does DPC817W-C-TU support VDE certification?
Yes - DPC817W-C-TU-V is the VDE-certified variant (EN IEC 60747-5-5), and the base part DPC817W-C-TU shares identical construction and isolation structure. The "-V" suffix denotes formal VDE test reporting; both meet the same 5000 VRMS isolation requirement.
Can DPC817W-C-TU replace DPC817D-C-TU in existing designs?
Yes, with mechanical verification: both share identical electrical specs and CTR rank C, but DPC817W-C-TU uses MDIP-4 (10.16 mm eA) versus DIP-4 (8.57 mm eA). PCB footprint must accommodate the 1.59 mm longer body and adjusted leadform - no circuit redesign is needed.
What is the typical CTR degradation over 10 years at 105°C?
Based on Diodes' accelerated life testing data (DS45855 Rev. 5, Fig.5), CTR retention remains ≥85% after 10,000 hours at 105°C and IF = 10 mA. At 200% initial CTR, this yields ≥170% remaining gain - sufficient for most feedback loop stability margins.
DPC817W-C-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):
- 200% @ 5mA
- Current Transfer Ratio (Max):
- 400% @ 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-C-TU FAQ
1.How can I place an order for DPC817W-C-TU through Aetrix?
Please submit a Request for Quotation (RFQ) for DPC817W-C-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-C-TU reliable?
The price and inventory of DPC817W-C-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-C-TU is usually 5 days.
3.What payment methods are accepted for DPC817W-C-TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DPC817W-C-TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DPC817W-C-TU?
DPC817W-C-TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DPC817W-C-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-C-TU?
For technical support, including DPC817W-C-TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DPC817W-C-TU requirements.
6.How does Aetrix verify that DPC817W-C-TU is sourced from the original manufacturer or authorized distributors?
All DPC817W-C-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-C-TU meets industry standards.
7.What is the process for return or replacement of DPC817W-C-TU?
All DPC817W-C-TU units undergo pre-shipment inspection (PSI). If there is an issue with DPC817W-C-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-C-TU part is unused and in its original packaging.
Return procedure for DPC817W-C-TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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