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Diodes Incorporated DPC817S-A-TR
- Part No.:
- DPC817S-A-TR
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-SMD, Gull Wing
- Datasheet:
-
DPC817S-A-TR.pdf
- Description:
- PHOTO COUPLER SL-4 T&R 2K
- Quantity:
- Payment:
- Shipping:
Inventory:3,924
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Product details
Overview
DPC817S-A-TR from Diodes Incorporated is a single-channel phototransistor-based optocoupler in SL-4 surface-mount package, providing galvanic isolation with 5000 VRMS isolation voltage, minimum 80% current transfer ratio (CTR) at IF = 5 mA / VCE = 5 V, and guaranteed operation from –55°C to +110°C. It is used for feedback signal isolation in offline AC/DC power supplies and microcontroller I/O interfacing in industrial control systems.
For engineers reviewing the DPC817S-A-TR datasheet, DPC817S-A-TR pinout, DPC817S-A-TR application, or DPC817S-A-TR equivalent, key selection criteria include CTR rank A (80–160%), SL-4 footprint compatibility, UL/VDE safety certification, and 35 V CBO rating for primary-side switching interface protection.
Technical Context
This optocoupler integrates an AlGaAs infrared LED emitter coupled to a silicon NPN phototransistor output stage. Its internal structure enables DC-to-80 kHz signal transmission with 18 µs rise/fall times under RL = 100 Ω load, and supports linear or saturated switching operation depending on bias configuration.
The device meets reinforced insulation requirements per UL1577 and VDE EN IEC 60747-5-5, with isolation barrier rated for 5000 VRMS for 1 minute and isolation resistance ≥5×10¹⁰ Ω. It operates across full industrial temperature range without derating up to +110°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage | 5000 VRMS - Enables safe separation between primary high-voltage AC/DC stages and low-voltage control logic. |
| CTR (Min) | 80% @ IF=5mA, VCE=5V - Ensures reliable transistor saturation with minimal drive current in feedback loops. |
| VCEO | 35 V - Supports direct connection to 24 V or 3.3/5 V logic rails with margin for transient spikes. |
| Response Time (Rise/Fall) | 18 µs each - Sufficient for PWM frequencies ≤50 kHz in SMPS feedback and digital I/O isolation. |
| Operating Temperature | –55°C to +110°C - Qualified for use in automotive engine compartments and industrial motor drives. |
| Package | SL-4 - Surface-mount, 4-pin gull-wing leadframe compatible with standard reflow profiles (MSL Level 1). |
| Safety Certifications | UL1577, CQC GB4943.1-2022, VDE EN IEC 60747-5-5 - Meets global regulatory requirements for end-equipment safety approval. |
Pinout & Package
SL-4 package: 4-pin surface-mount gull-wing outline with 2.54 mm pitch, 10.16 mm body width (E), 4.60 mm body length (D), and 3.50 mm height (A2). Pin 1 marked by dot; polarity indicator aligns with cathode (Pin 2) and emitter (Pin 3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | LED anode input - Connect to current-limited source (e.g., via series resistor from MCU GPIO or error amplifier output). |
| Pin 2 | Cathode | LED cathode return - Ground reference for input side; defines forward current direction. |
| Pin 3 | Emitter | Phototransistor emitter - Typically tied to ground or pulled up via collector load for active-low output configuration. |
| Pin 4 | Collector | Phototransistor collector - Output node; connects to pull-up resistor or logic input; carries isolated signal current. |
Key Features
| Feature | Design Value |
|---|---|
| High CTR consistency (Rank A) | 80–160% range ensures predictable gain across production lots, reducing calibration overhead in closed-loop PSUs. |
| Reinforced isolation barrier | 5000 VRMS withstand and >5×10¹⁰ Ω insulation resistance meet IEC/EN 62368-1 basic insulation requirements. |
| Lead-free & halogen-free | RoHS 3 compliant with <900 ppm Br+Cl and <1000 ppm Sb - satisfies environmental mandates for consumer and industrial OEMs. |
| Extended temperature range | –55°C to +110°C operation allows deployment in unheated outdoor enclosures and under-hood automotive modules. |
| SL-4 surface-mount footprint | Compatible with automated pick-and-place and reflow soldering; eliminates through-hole assembly steps and improves board density. |
Applications
| AC/DC Power Supply Feedback | PLC Digital Input Isolation |
|---|---|
|
Use Scenario: Isolating voltage feedback signal from secondary-side TL431 shunt regulator to primary-side PWM controller in flyback converters. IC Role / Device Role / Timing Role: Signal-level galvanic isolator transmitting error-amplifier output across safety boundary. Use Value: Maintains stable regulation while meeting creepage/clearance requirements and enabling compact transformerless designs. |
Use Scenario: Converting 24 V DC field sensor signals into logic-compatible inputs for programmable logic controllers. IC Role / Device Role / Timing Role: Input stage isolator protecting CPU I/O pins from ground loop noise and surge transients. Use Value: Eliminates need for external TVS and common-mode chokes; supports >10 kV ESD immunity per IEC 61000-4-2. |
| Motor Drive Enable Interface | Industrial Communication Line Receiver |
|
Use Scenario: Transmitting enable/disable commands from isolated control board to gate driver ICs in three-phase inverter stacks. IC Role / Device Role / Timing Role: Level-shifting and noise-immune command coupler between low-voltage logic and high-side driver domains. Use Value: Prevents latch-up during fast switching transitions; supports 18 µs response time for sub-50 kHz PWM synchronization. |
Use Scenario: Receiving RS-485 or CAN bus status signals in isolated subsystems of factory automation equipment. IC Role / Device Role / Timing Role: Low-speed digital signal isolator for status monitoring lines where data rate ≤1 Mbps. Use Value: Breaks ground loops between network nodes while preserving signal integrity without adding propagation delay jitter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar optocoupler applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLP185(GB-TP,F) | Higher CTR (100–600%), same SL-4 package, but only UL-certified (no VDE); 5000 VRMS isolation. | Lacks VDE EN IEC 60747-5-5 - unsuitable for EU medical or industrial equipment requiring dual certification. | Select when VDE compliance is not required and higher CTR margin is needed for aging compensation. |
| PC817XNSZ0F | Same CTR Rank A (80–160%), DIP-4 through-hole package, UL/VDE certified, but larger footprint and MSL Level 3 handling. | Requires wave soldering or hand-soldering; incompatible with high-density SMT layouts. | Choose only if legacy DIP-4 board redesign is impractical and thermal cycling reliability is prioritized over size. |
Compared with TLP185(GB-TP,F), DPC817S-A-TR offers mandatory VDE certification for global market access; compared with PC817XNSZ0F, it enables smaller PCB area and simplified reflow assembly while maintaining identical CTR performance and safety ratings.
Availability
DPC817S-A-TR is available at Aetrix Electronics and suitable for AC/DC power supply feedback, PLC digital input isolation, and motor drive enable interface applications requiring stable component supply across extended temperature ranges and global safety certifications.
Supply support for DPC817S-A-TR 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 isolation in power conversion and industrial control systems where safety certification, temperature resilience, and long-term CTR stability are critical.
FAQ
What is the maximum forward current rating for DPC817S-A-TR?
The absolute maximum forward current (IF) is 60 mA per the datasheet's Maximum Ratings table. Continuous operation should be limited to ≤50 mA to ensure long-term LED reliability and CTR retention over temperature and lifetime. Derating curves show CTR degradation accelerates above 25 mA at +110°C ambient.
Does DPC817S-A-TR support linear analog signal transmission?
Yes - its phototransistor output exhibits approximately linear current transfer versus input LED current below 10 mA, making it usable in analog feedback paths such as voltage-controlled oscillator interfaces or precision current sensing. However, nonlinearity exceeds ±5% above 15 mA, so digital or PWM-coupled use is preferred for accuracy.
How does the SL-4 package differ mechanically from DIP-4 or MDIP-4 variants?
SL-4 has gull-wing leads with 2.54 mm pitch, 10.16 mm width (E), and 4.60 mm length (D); DIP-4 uses through-hole straight leads with 7.62 mm width and 4.60 mm length; MDIP-4 adds molded plastic body extension increasing width to 10.16 mm while retaining straight leads. SL-4 enables automated SMT placement and eliminates drilling.
Is DPC817S-A-TR qualified for automotive applications per AEC-Q101?
No - the datasheet explicitly states that automotive qualification (AEC-Q100/101/104/200) requires special change control and PPAP capability, and DPC817S-A-TR is not listed among Diodes' AEC-qualified optocouplers. It is rated for industrial temperature range but lacks automotive-specific stress testing, failure analysis reporting, or IATF 16949-manufactured lot traceability.
DPC817S-A-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- DPC817
- Package/Case:
- 4-SMD, Gull Wing
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
- 4-SMD
DPC817S-A-TR FAQ
1.How can I place an order for DPC817S-A-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for DPC817S-A-TR 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 DPC817S-A-TR reliable?
The price and inventory of DPC817S-A-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DPC817S-A-TR is usually 5 days.
3.What payment methods are accepted for DPC817S-A-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DPC817S-A-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DPC817S-A-TR?
DPC817S-A-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DPC817S-A-TR 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 DPC817S-A-TR?
For technical support, including DPC817S-A-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DPC817S-A-TR requirements.
6.How does Aetrix verify that DPC817S-A-TR is sourced from the original manufacturer or authorized distributors?
All DPC817S-A-TR 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 DPC817S-A-TR meets industry standards.
7.What is the process for return or replacement of DPC817S-A-TR?
All DPC817S-A-TR units undergo pre-shipment inspection (PSI). If there is an issue with DPC817S-A-TR, 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 DPC817S-A-TR part is unused and in its original packaging.
Return procedure for DPC817S-A-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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