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Diodes Incorporated DPC817S-D-TR
- Part No.:
- DPC817S-D-TR
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-SMD, Gull Wing
- Datasheet:
-
DPC817S-D-TR.pdf
- Description:
- PHOTO COUPLER SL-4 T&R 2K
- Quantity:
- Payment:
- Shipping:
Inventory:4,547
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Product details
Overview
DPC817S-D-TR from Diodes Incorporated is a single-channel phototransistor output optocoupler with 5000 VRMS input-output isolation, 35 V C-E breakdown voltage, and minimum 50% current transfer ratio (CTR) at IF = 5 mA, VCE = 5 V. It operates across -55°C to +110°C and is used in isolated feedback loops for AC/DC SMPS, I/O level shifting in PLCs, and safety-critical relay drive circuits.
For engineers reviewing the DPC817S-D-TR datasheet, DPC817S-D-TR pinout, DPC817S-D-TR application, or DPC817S-D-TR equivalent, key selection criteria include verified CTR range (50–600%), isolation rating compliance (UL1577, VDE EN IEC 60747-5-5), temperature stability of CTR (-40°C to +100°C), and SL-4 surface-mount package compatibility with automated assembly.
Technical Context
This optocoupler integrates an AlGaAs infrared LED paired with a silicon NPN phototransistor in a single SL-4 package. Its internal structure enables galvanic isolation between input and output stages without shared ground, supporting signal transmission across different voltage domains while blocking noise and transients.
The device exhibits 80 kHz cutoff frequency and ≤18 µs rise/fall times under RL = 100 Ω, making it suitable for DC and low-frequency AC signal coupling. CTR degrades predictably with temperature and aging-typical drift is -0.2%/°C from 25°C to 100°C and <10% over 10 years at rated conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage | 5000 VRMS - meets reinforced insulation requirements per UL1577 and VDE EN IEC 60747-5-5 for industrial safety standards. |
| CTR (Min) | 50% at IF = 5 mA, VCE = 5 V - ensures reliable transistor saturation in feedback control loops even at end-of-life. |
| VCEO | 35 V - supports output-side operation up to 24 V logic or 30 V relay coil drive with margin. |
| Response Time | ≤18 µs (rise/fall) - enables stable closed-loop regulation in switch-mode power supplies up to ~50 kHz switching frequency. |
| Operating Temp | -55°C to +110°C - qualified for extended industrial and automotive under-hood environments without derating. |
| Package | SL-4 - surface-mount, 4-pin, 2.54 mm pitch, compatible with standard reflow profiles (peak 260°C). |
| Moisture Sensitivity | Level 1 per J-STD-020 - no baking required prior to assembly; supports unlimited floor life. |
Pinout & Package
SL-4 is a 4-pin surface-mount package with 2.54 mm lead pitch, 10.16 mm body width, and 4.60 mm length. Pin 1 is marked by a dot; polarity is critical for LED anode connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | LED input terminal - connect to current-limited source (e.g., via 1 kΩ resistor from 5 V); reverse bias must not exceed 6 V. |
| 2 | Cathode | LED return path - tie to system ground or low-side switch; IR ≤ 10 µA at VR = 4 V ensures minimal leakage. |
| 3 | Emitter | Phototransistor emitter - typically grounded; provides common reference for collector load and defines output polarity. |
| 4 | Collector | Phototransistor output - connects to pull-up resistor or logic input; IC ≤ 50 mA max supports direct drive of small relays or logic gates. |
Key Features
| Feature | Design Value |
|---|---|
| High Isolation Integrity | 5000 VRMS withstand voltage with ≥5×10¹⁰ Ω isolation resistance ensures long-term reliability in noisy industrial environments. |
| Wide-Temperature CTR Stability | CTR remains ≥70% of room-temp value at +100°C - eliminates need for external gain compensation in thermal-critical designs. |
| Green Mold Compound | UL94V-0 rated, halogen-free, antimony-free compound - satisfies IPC-1752A material declaration and RoHS 3 (2015/863/EU) compliance. |
| Lead-Free & Solderable | Matte tin-plated leads meet MIL-STD-202 Method 208 - supports both SnPb and lead-free reflow without dewetting or voiding. |
| Standardized SL-4 Footprint | Compatible with JEDEC MS-012AC outline - enables drop-in replacement of legacy DIP-4 optocouplers using adapter stencils or board redesign. |
Applications
| AC/DC Switch-Mode Power Supply Feedback | Programmable Logic Controller (PLC) Digital Input Isolation |
|---|---|
Use Scenario: Closed-loop voltage regulation in offline flyback converters where primary-side controller requires isolated feedback from secondary-side output. IC Role / Device Role / Timing Role: Signal-level isolation element transmitting error amplifier output across transformer barrier to adjust PWM duty cycle. Use Value: Enables stable ±1% output regulation despite line/load transients and EMI, leveraging 5000 VRMS isolation to meet IEC 62368-1 creepage requirements. |
Use Scenario: Converting 24 V DC field sensor signals into 3.3 V/5 V logic-compatible inputs inside PLC backplane modules. IC Role / Device Role / Timing Role: Level-shifting and noise-immune interface between ungrounded field wiring and grounded microcontroller I/O. Use Value: Rejects common-mode surges up to 2 kV (per IEC 61000-4-5) and suppresses 50/60 Hz induced noise on long cables without signal distortion. |
| Industrial Relay Driver Interface | Medical Equipment Patient-Connected Isolation Barrier |
Use Scenario: Driving 12 V/24 V electromechanical relays from low-power MCU GPIO pins in motor control cabinets. IC Role / Device Role / Timing Role: Current-amplifying isolator enabling safe high-side switching of inductive loads without ground loop interference. Use Value: Supports 50 mA collector current with VCE(SAT) ≤ 0.2 V, reducing relay coil power loss and enabling direct drive without external transistor stage. |
Use Scenario: Isolating patient-monitoring analog front-end (ECG, SpO₂) from main processor and USB communication in Class II medical devices. IC Role / Device Role / Timing Role: Safety-critical galvanic barrier meeting BF (Body Floating) isolation requirements per IEC 60601-1 3.2 ed. Use Value: Certified to UL1577 and VDE EN IEC 60747-5-5 - provides double insulation equivalent for 250 V RMS working voltage in patient-connected circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar optocoupler applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLP291(GB-TP,E | Higher CTR (50–600% same range), but only 3750 VRMS isolation; SL-4 package identical. | Lacks VDE certification; unsuitable for medical or reinforced insulation systems requiring 5000 VRMS. | Select when cost sensitivity outweighs safety certification needs and isolation margin can be reduced. |
| PC817XNSZ0F | Same 5000 VRMS rating and SL-4 footprint, but CTR min = 80% (rank X); tighter initial tolerance. | Better for precision feedback loops where gain consistency reduces calibration overhead. | Prefer when higher baseline CTR improves loop stability margin without increasing external gain components. |
Compared with TLP291(GB-TP,E, DPC817S-D-TR delivers 1250 VRMS higher isolation for safety-critical systems; versus PC817XNSZ0F, it offers broader CTR distribution (50–600% vs. 80–160%) enabling wider design flexibility at lower cost, though with less initial gain precision.
Availability
DPC817S-D-TR is available at Aetrix Electronics and suitable for AC/DC power supply feedback, PLC digital input isolation, and industrial relay driver interfaces requiring stable component supply across extended temperature ranges and certified safety isolation.
Supply support for DPC817S-D-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 integrated circuits, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The DPC817 Series belongs to Diodes' optocoupler product line, engineered specifically for industrial-grade isolation in power conversion, automation, and safety-critical control systems where long-term reliability and regulatory compliance are mandatory.
FAQ
What is the maximum forward current rating for DPC817S-D-TR?
The absolute maximum forward current (IF) is 60 mA, but continuous operation above 50 mA accelerates LED degradation. For 10-year reliability at +105°C, Diodes recommends limiting IF to 20 mA with appropriate series resistance-verified by accelerated life testing per JESD22-A108.
Does DPC817S-D-TR support bidirectional signal transmission?
No. DPC817S-D-TR is unidirectional: the AlGaAs LED emits light only when forward-biased (pin 1 → pin 2), and the NPN phototransistor conducts only from collector to emitter (pin 4 → pin 3). Reverse connection of either side will not function and may damage the LED if reverse voltage exceeds 6 V.
Can DPC817S-D-TR replace through-hole DIP-4 optocouplers on existing PCBs?
Not directly-SL-4 has different pad layout (10.16 mm width vs. DIP-4's 7.62 mm) and solder joint geometry. However, Diodes provides recommended SL-4 pad dimensions (C = 2.54 mm, C1 = 9.22 mm) and adapter footprints exist for migration; board redesign or stencil adaptation is required.
Is DPC817S-D-TR qualified for automotive applications?
No AEC-Q101 qualification is stated in DS45855 Rev. 5-2. While operating temperature (-55°C to +110°C) meets automotive ambient requirements, absence of PPAP documentation, AEC change control, and IATF 16949 manufacturing evidence means it is intended for industrial, medical, and consumer applications-not automotive safety systems.
DPC817S-D-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):
- 300% @ 5mA
- Current Transfer Ratio (Max):
- 600% @ 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-D-TR FAQ
1.How can I place an order for DPC817S-D-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for DPC817S-D-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-D-TR reliable?
The price and inventory of DPC817S-D-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-D-TR is usually 5 days.
3.What payment methods are accepted for DPC817S-D-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DPC817S-D-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DPC817S-D-TR?
DPC817S-D-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DPC817S-D-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-D-TR?
For technical support, including DPC817S-D-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DPC817S-D-TR requirements.
6.How does Aetrix verify that DPC817S-D-TR is sourced from the original manufacturer or authorized distributors?
All DPC817S-D-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-D-TR meets industry standards.
7.What is the process for return or replacement of DPC817S-D-TR?
All DPC817S-D-TR units undergo pre-shipment inspection (PSI). If there is an issue with DPC817S-D-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-D-TR part is unused and in its original packaging.
Return procedure for DPC817S-D-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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