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Diodes Incorporated DPC817D-B-TU
- Part No.:
- DPC817D-B-TU
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-DIP (0.300", 7.62mm)
- Datasheet:
-
DPC817D-B-TU.pdf
- Description:
- PHOTO COUPLER DIP-4 TUBE 100PCS
- Quantity:
- Payment:
- Shipping:
Inventory:3,375
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Product details
Overview
DPC817D-B-TU from Diodes Incorporated is a high-isolation, single-channel phototransistor output optocoupler in DIP-4 package, featuring CTR of 130–260% at IF = 5 mA / VCE = 5 V, 5000 VRMS input-output isolation voltage, and operation from −55°C to +110°C. It enables galvanic signal transfer in AC/DC power supply feedback loops, PLC I/O isolation, and industrial sensor interface circuits.
For engineers reviewing the DPC817D-B-TU datasheet, DPC817D-B-TU pinout, DPC817D-B-TU application, or DPC817D-B-TU equivalent, key selection criteria include guaranteed CTR range, UL/VDE safety certification, creepage/clearance compliance for reinforced insulation, and thermal stability across extended temperature operation.
Technical Context
This optocoupler integrates an AlGaAs infrared LED emitter coupled with a silicon NPN phototransistor in a single molded DIP-4 package. Its current transfer ratio is specified over full operating temperature (−55°C to +110°C) and remains stable under 5 mA forward drive, enabling predictable closed-loop regulation in isolated SMPS feedback paths.
The device meets UL 1577 (5000 VRMS, 1 min), CQC GB 4943.1-2022, and VDE EN IEC 60747-5-5 safety standards. Its 35 V VCEO rating and 0.1–0.2 V VCE(SAT) support low-loss switching in digital logic level shifting and microcontroller I/O isolation applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CTR Range | 130–260% at IF = 5 mA, VCE = 5 V - ensures reliable transistor saturation across process/temperature variation in feedback control loops |
| VISO | 5000 VRMS (1 min) - provides reinforced insulation per IEC 62368-1 for primary-secondary barrier in Class II power supplies |
| VCEO | 35 V - supports direct connection to 24 V industrial logic or 3.3/5 V MCU outputs without external collector pull-up limiting |
| tR/tF | 18 µs max - sufficient for <50 kHz PWM signal transmission in isolated gate drive or status monitoring |
| Operating Temp | −55°C to +110°C - qualified for under-hood automotive modules and industrial motor drives with wide ambient swings |
| Isolation Resistance | ≥5 × 1010 Ω - maintains signal integrity in high-impedance sensing interfaces over product lifetime |
| Package | DIP-4 (7.62 mm pitch) - compatible with standard through-hole PCB assembly and legacy socket-based test fixtures |
Pinout & Package
Package: DIP-4 (Dual In-line Package, 0.3″ width, 7.62 mm lead pitch), molded green plastic housing compliant with UL 94V-0 flammability rating and J-STD-020 Level 1 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | LED anode - connect to current-limited source (e.g., via series resistor from 3.3/5/12 V rail) |
| 2 | Cathode | LED cathode - ground reference for input-side LED drive circuit |
| 3 | Emitter | Phototransistor emitter - typically tied to system ground on output side for common-emitter configuration |
| 4 | Collector | Phototransistor collector - connects to pull-up resistor and load; output signal sourced from this node |
Key Features
| Feature | Design Value |
|---|---|
| High CTR consistency | 130–260% range minimizes need for post-production gain trimming in closed-loop power supply designs |
| Reinforced safety isolation | UL 1577 + VDE EN IEC 60747-5-5 certified - eliminates need for additional isolation validation in medical/industrial end-equipment |
| Extended temperature operation | Rated from −55°C to +110°C - supports deployment in engine control units and outdoor telecom infrastructure |
| Lead-free & halogen-free | RoHS 3 compliant with <900 ppm Br/Cl and <1000 ppm Sb - satisfies EU environmental directives and OEM sustainability requirements |
| Low VCE(SAT) | 0.1–0.2 V at IC = 1 mA - reduces power loss and self-heating in high-duty-cycle digital isolation applications |
Applications
| AC/DC Power Supply Feedback | PLC Digital Input Isolation |
|---|---|
|
Use Scenario: Isolating error amplifier output from primary-side controller in flyback converters. IC Role / Device Role / Timing Role: Phototransistor output delivers analog-level feedback signal across isolation barrier with linear CTR response. Use Value: Maintains ±1% output voltage regulation across line/load/temperature while meeting IEC 62368-1 creepage requirements. |
Use Scenario: Converting 24 V DC field sensor signals into 3.3 V logic-compatible inputs for programmable logic controllers. IC Role / Device Role / Timing Role: Digital on/off signal translator providing galvanic separation between field and control domains. Use Value: Prevents ground loop noise coupling and protects controller I/O from surge transients up to 2 kV. |
| Industrial Motor Drive Status Monitoring | Medical Equipment Isolated Alarm Interface |
|
Use Scenario: Reporting fault conditions (e.g., overcurrent, thermal shutdown) from high-voltage inverter stage to low-voltage MCU. IC Role / Device Role / Timing Role: Fast-response digital isolator conveying latched alarm states with minimal propagation delay. Use Value: Enables sub-20 µs fault reporting latency while sustaining 5000 VRMS working voltage per IEC 60601-1 Clause 8.8.3. |
Use Scenario: Transmitting audible/visual alarm activation signals from patient-connected modules to nurse station panels. IC Role / Device Role / Timing Role: Safety-critical signal coupler ensuring no hazardous energy transfer during fault conditions. Use Value: Meets BF-rated isolation requirements and supports 2×MOPP design per IEC 60601-1 for applied parts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar phototransistor-output optocoupler applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLP185(GB-TP,F) | CTR 100–300%, same DIP-4 package, but lower VISO = 3750 VRMS; lacks VDE certification | Acceptable for non-safety-critical industrial controls where 3750 VRMS suffices | Select when cost sensitivity outweighs need for 5000 VRMS and dual-certification |
| PC817XNNSZ0F | CTR 130–260%, identical specs except RoHS-compliant matte tin plating vs. bright tin; no VDE option available | Functionally interchangeable in UL-only designs; not suitable for VDE-mandated markets | Choose for legacy compatibility where VDE approval is not required and tin finish preference exists |
Compared with TLP185(GB-TP,F) and PC817XNNSZ0F, DPC817D-B-TU uniquely combines 5000 VRMS isolation, VDE+UL dual certification, and guaranteed 130–260% CTR in a green compound DIP-4 package-making it optimal for safety-critical, globally deployed power and control systems.
Availability
DPC817D-B-TU is available at Aetrix Electronics and suitable for AC/DC power supply feedback, PLC digital input isolation, and industrial motor drive status monitoring requiring stable component supply across automotive, industrial, and medical end-markets.
Supply support for DPC817D-B-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 integrated circuits, specializing in high-reliability components for power management, signal integrity, and protection applications.
The DPC817 Series belongs to Diodes' optocoupler portfolio designed specifically for safety-isolated feedback and signal transmission in regulated power supplies, industrial automation, and medical equipment.
FAQ
What is the minimum forward current required to reliably saturate the output phototransistor?
The DPC817D-B-TU achieves guaranteed saturation (VCE(SAT) ≤ 0.2 V) with ≥5 mA forward current at VCE = 5 V, per datasheet test condition. At 20 mA drive, VCE(SAT) drops to ≤0.1 V, enabling robust switching in logic-level translation. Derating below −40°C may require ≥7 mA for consistent turn-on.
Does DPC817D-B-TU support bidirectional signal transmission?
No. The DPC817D-B-TU is unidirectional: optical signal flows only from input LED (pins 1–2) to output phototransistor (pins 3–4). It cannot transmit signals from collector/emitter back to the LED side. Bidirectional isolation requires separate dedicated channels or specialized devices like digital isolators.
Can this optocoupler replace older PC817 variants in existing designs?
Yes-DPC817D-B-TU is pin-compatible with PC817x series in DIP-4 footprint and matches key parameters: 35 V VCEO, 5000 VRMS isolation, and −55°C to +110°C operation. Its higher minimum CTR (130% vs. 50% for PC817A) improves noise margin, but layout and biasing remain unchanged.
Is the DPC817D-B-TU qualified for automotive applications per AEC-Q101?
No. While rated for −55°C to +110°C and manufactured in IATF 16949 facilities, the DPC817D-B-TU is not AEC-Q101 qualified. Diodes offers the APD111x series for automotive-grade optocouplers; DPC817D-B-TU is intended for industrial, medical, and commercial power systems.
DPC817D-B-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):
- 130% @ 5mA
- Current Transfer Ratio (Max):
- 260% @ 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-B-TU FAQ
1.How can I place an order for DPC817D-B-TU through Aetrix?
Please submit a Request for Quotation (RFQ) for DPC817D-B-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-B-TU reliable?
The price and inventory of DPC817D-B-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-B-TU is usually 5 days.
3.What payment methods are accepted for DPC817D-B-TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DPC817D-B-TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DPC817D-B-TU?
DPC817D-B-TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DPC817D-B-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-B-TU?
For technical support, including DPC817D-B-TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DPC817D-B-TU requirements.
6.How does Aetrix verify that DPC817D-B-TU is sourced from the original manufacturer or authorized distributors?
All DPC817D-B-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-B-TU meets industry standards.
7.What is the process for return or replacement of DPC817D-B-TU?
All DPC817D-B-TU units undergo pre-shipment inspection (PSI). If there is an issue with DPC817D-B-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-B-TU part is unused and in its original packaging.
Return procedure for DPC817D-B-TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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