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Diodes Incorporated DPC817D-C-TU
- Part No.:
- DPC817D-C-TU
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-DIP (0.300", 7.62mm)
- Datasheet:
-
DPC817D-C-TU.pdf
- Description:
- PHOTO COUPLER DIP-4 TUBE 100PCS
- Quantity:
- Payment:
- Shipping:
Inventory:1,861
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Product details
Overview
DPC817D-C-TU from Diodes Incorporated is a high-isolation, CTR-rank-C phototransistor-based optocoupler in DIP-4 package, delivering 200–400% current transfer ratio at IF = 5 mA and VCE = 5 V, with 5000 VRMS input-output isolation and -55°C to +110°C operating range. It enables galvanic signal transfer in industrial PLC I/O modules, AC mains-sensed power supply feedback loops, and isolated microcontroller GPIO interfacing.
For engineers reviewing the DPC817D-C-TU datasheet, DPC817D-C-TU pinout, DPC817D-C-TU application, or DPC817D-C-TU equivalent, this page provides verified specifications, real-world use context, pin-level design meaning, safety-certified alternatives, and supply-chain support for production-grade embedded isolation design.
Technical Context
The DPC817D-C-TU integrates a GaAs infrared LED emitter coupled to a silicon NPN phototransistor in a single-molded DIP-4 package. Its CTR rank (200–400%) ensures robust output drive under low-input-current conditions, while its 35 V VCEO rating supports operation across standard logic-level and low-voltage switching nodes.
It achieves 5000 VRMS isolation per UL1577 and VDE EN IEC 60747-5-5, with <18 µs rise/fall times and 80 kHz cutoff frequency - enabling reliable DC and low-frequency AC signal transmission in noise-prone industrial environments without external biasing or speed compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CTR Range | 200–400% at IF = 5 mA, VCE = 5 V - ensures ≥2× output collector current vs. input LED current, reducing drive burden on MCU GPIOs or low-power controllers. |
| VISO | 5000 VRMS - meets reinforced insulation requirements for functional safety in Class I/II AC-powered equipment per IEC 62368-1. |
| VCEO | 35 V - supports direct interface with 24 V industrial control rails and 3.3/5 V logic outputs without external collector pull-up limiting. |
| tR/tF | ≤18 µs - enables reliable sampling of 10–20 kHz digital signals (e.g., encoder quadrature, PWM feedback) without pulse distortion. |
| Operating Temp | -55°C to +110°C - qualified for under-hood automotive auxiliary circuits and outdoor-rated industrial gateways without derating. |
| Isolation Resistance | ≥5 × 1010 Ω - maintains signal integrity over decades in humid or contaminated PCB environments. |
| Package | DIP-4 (7.62 mm pitch) - compatible with legacy through-hole assembly lines and manual prototyping; creepage/clearance >8 mm. |
Pinout & Package
Package: DIP-4 (Dual In-line Package, 0.3″ wide), molded green plastic (UL 94V-0), matte tin-plated leads, MSL Level 1, weight ≈0.216 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | LED anode input | Connect to MCU GPIO or driver IC output via current-limiting resistor; polarity dot marks this pin. |
| 2 (Cathode) | LED cathode return | Ground reference for LED forward current path; must be tied to same ground domain as LED driver. |
| 3 (Emitter) | Phototransistor emitter | Typically grounded to output-side reference; enables common-emitter configuration with collector pull-up. |
| 4 (Collector) | Phototransistor collector | Output node - connects to pull-up resistor or logic input; voltage swing limited by VCEO (35 V max). |
Key Features
| Feature | Design Value |
|---|---|
| High CTR Rank C | 200–400% ensures ≥1 mA output current with only 2.5–5 mA LED drive - reduces power loss and heat in battery-powered or thermally constrained systems. |
| 5000 VRMS Isolation | UL1577 + VDE EN IEC 60747-5-5 certified - eliminates need for additional isolation barriers in medical, industrial, and grid-connected designs. |
| Extended Temperature Range | -55°C to +110°C operation - avoids thermal shutdown or parameter drift in uncooled enclosures exposed to solar loading or engine bay heat. |
| Lead-Free & Halogen-Free | RoHS 3 compliant, <900 ppm Br/Cl, <1000 ppm Sb - satisfies EU environmental directives and enables use in green-certified end equipment. |
Applications
| Industrial PLC Digital Input | AC-DC Power Supply Feedback |
|---|---|
|
Use Scenario: Isolating 24 V DC field sensor signals (e.g., limit switches, proximity sensors) before routing to 3.3 V microcontroller inputs in programmable logic controllers. IC Role / Device Role / Timing Role: Signal-level galvanic isolator providing input-side voltage translation and ground-loop elimination. Use Value: Enables direct connection of industrial 24 V sensors to low-voltage logic without level-shifter ICs or discrete transistor stages - reducing BOM count and board area. |
Use Scenario: Transferring error amplifier output from secondary-side TL431 shunt regulator across transformer barrier to primary-side PWM controller in offline flyback converters. IC Role / Device Role / Timing Role: Closed-loop feedback coupler maintaining regulation accuracy while blocking high dv/dt noise from primary switching node. Use Value: Achieves ±1% output voltage stability under load transients without requiring complex compensation networks or shielded transformers. |
| Microcontroller GPIO Isolation | Motor Driver Fault Reporting |
|
Use Scenario: Protecting Raspberry Pi or STM32 GPIO pins from voltage spikes when controlling relay coils or solenoid drivers in home automation hubs. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional isolator (anode/emitter driven) for safe output enable/disable signaling. Use Value: Prevents latch-up or permanent damage to $5 microcontrollers during inductive kickback events - eliminating need for TVS diodes or snubbers on every output line. |
Use Scenario: Reporting overcurrent or thermal fault status from half-bridge motor driver ICs (e.g., DRV887x) back to host MCU in robotic actuators. IC Role / Device Role / Timing Role: Fast-response status coupler transmitting fault pulses (≤18 µs edge) across isolation boundary without propagation delay skew. Use Value: Enables sub-100 µs fault response time - critical for preventing MOSFET shoot-through and winding saturation in BLDC motor control loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar phototransistor optocoupler applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLP183(TPL,E) | CTR 100–300%, VISO = 3750 VRMS, VCEO = 80 V, SMD SO-4 package | Lacks UL/VDE certification for reinforced insulation; lower isolation voltage limits use in mains-connected systems. | Select when board space is constrained and isolation voltage ≤3750 VRMS suffices - e.g., internal subsystem isolation within SELV domains. |
| PC817XNNSZ0F | CTR 130–260%, VISO = 5000 VRMS, VCEO = 35 V, DIP-4, same footprint but Rank B | Lower CTR range requires higher LED drive current (≥7.7 mA) to achieve same output current - increases MCU I/O loading and power dissipation. | Choose when cost sensitivity outweighs drive-efficiency needs and existing designs already use Rank B CTR margin. |
Compared with TLP183(TPL,E), DPC817D-C-TU delivers 33% higher minimum CTR and full safety certification; versus PC817XNNSZ0F, it provides 54% higher minimum CTR - directly reducing required LED drive current and simplifying upstream driver design.
Availability
DPC817D-C-TU is available at Aetrix Electronics and suitable for industrial PLC I/O modules, AC-DC power supply feedback circuits, and microcontroller GPIO protection applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for DPC817D-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 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 industrial and power-conversion isolation where safety certification, extended temperature performance, and consistent CTR stability are mandatory.
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 drive above 20 mA accelerates LED degradation and reduces CTR lifetime stability; Diodes recommends 10–15 mA for 10+ year reliability in industrial applications.
Does DPC817D-C-TU support AC input signal coupling?
No - the integrated GaAs LED is a unidirectional emitter; reverse voltage tolerance is only 6 V. For AC-coupled applications, external series diode clamping or bridge rectification is required on the input side to ensure forward-bias conduction during both half-cycles.
Can it replace older PC817 variants in existing designs?
Yes - DPC817D-C-TU shares identical DIP-4 pinout, mechanical dimensions, and electrical ratings with PC817 series devices. Its higher CTR rank (200–400% vs. typical 80–160%) may reduce or eliminate external base resistors in phototransistor bias networks, improving noise immunity.
Is VDE certification included in the DPC817D-C-TU part number?
No - the standard DPC817D-C-TU carries UL1577 and CQC certification. VDE EN IEC 60747-5-5 compliance is available in the -V suffix variant (DPC817D-C-TU-V); that version undergoes additional test reporting and marking per VDE requirements.
DPC817D-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
DPC817D-C-TU FAQ
1.How can I place an order for DPC817D-C-TU through Aetrix?
Please submit a Request for Quotation (RFQ) for DPC817D-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 DPC817D-C-TU reliable?
The price and inventory of DPC817D-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 DPC817D-C-TU is usually 5 days.
3.What payment methods are accepted for DPC817D-C-TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DPC817D-C-TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DPC817D-C-TU?
DPC817D-C-TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DPC817D-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 DPC817D-C-TU?
For technical support, including DPC817D-C-TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DPC817D-C-TU requirements.
6.How does Aetrix verify that DPC817D-C-TU is sourced from the original manufacturer or authorized distributors?
All DPC817D-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 DPC817D-C-TU meets industry standards.
7.What is the process for return or replacement of DPC817D-C-TU?
All DPC817D-C-TU units undergo pre-shipment inspection (PSI). If there is an issue with DPC817D-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 DPC817D-C-TU part is unused and in its original packaging.
Return procedure for DPC817D-C-TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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