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Diodes Incorporated DPC817S-B-TR
- Part No.:
- DPC817S-B-TR
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-SMD, Gull Wing
- Datasheet:
-
DPC817S-B-TR.pdf
- Description:
- PHOTO COUPLER SL-4 T&R 2K
- Quantity:
- Payment:
- Shipping:
Inventory:3,106
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Product details
Overview
DPC817S-B-TR from Diodes Incorporated is a single-channel phototransistor-based optocoupler in SL-4 surface-mount package, providing galvanic isolation with 5,000 VRMS withstand voltage, minimum 130% CTR at IF = 5 mA / VCE = 5 V, and operation from −55°C to +110°C. It functions as a signal-level isolation interface in feedback loops of isolated DC-DC converters and I/O level-shifting circuits.
For engineers reviewing the DPC817S-B-TR datasheet, DPC817S-B-TR pinout, DPC817S-B-TR application, or DPC817S-B-TR equivalent, key selection criteria include guaranteed CTR range (130–260%), isolation rating compliance (UL1577, VDE EN IEC 60747-5-5), SL-4 footprint compatibility, and industrial temperature support without derating.
Technical Context
The DPC817S-B-TR integrates an AlGaAs infrared LED coupled to a silicon NPN phototransistor in a single molded package. Its current transfer ratio is specified under standardized test conditions (IF = 5 mA, VCE = 5 V), and its isolation barrier meets reinforced insulation requirements per UL1577 and VDE EN IEC 60747-5-5.
It delivers 18 µs rise/fall times into 100 Ω load, supports up to 60 mA forward current, and maintains collector-emitter saturation voltage ≤ 0.2 V at IC = 1 mA / IF = 20 mA - enabling reliable switching in low-voltage logic interfaces and analog feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CTR (Min/Max) | 130% to 260% at IF = 5 mA, VCE = 5 V - ensures robust output drive margin across temperature and lifetime for closed-loop regulation. |
| Isolation Voltage | 5,000 VRMS - meets reinforced insulation requirements for safety-critical AC-DC and medical power supplies. |
| VCEO | 35 V - supports collector supply rails up to 24 V with ≥40% headroom for transient suppression. |
| tR / tF | 18 µs each (RL = 100 Ω) - suitable for PWM frequencies ≤ 20 kHz in SMPS feedback and digital I/O isolation. |
| Operating Temp | −55°C to +110°C - enables deployment in automotive engine control modules and industrial motor drives without thermal derating. |
| VF (Typ) | 1.25 V at IF = 20 mA - minimizes LED drive power loss and simplifies biasing with standard 3.3 V or 5 V logic sources. |
| RISO (Min) | 5 × 10¹⁰ Ω - guarantees long-term insulation integrity in high-humidity environments. |
Pinout & Package
Package: SL-4 (Surface-Mount, 4-pin, gull-wing leads, 2.54 mm pitch, 10.16 mm body width). Molded green plastic housing with matte tin-plated leads, JEDEC-standard footprint, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | LED Anode Input | Positive terminal of infrared emitter; requires series resistor for current limiting from 3.3 V/5 V source. |
| 2 (Cathode) | LED Cathode Input | Return path for LED current; connects to ground or low-side switch in driving circuit. |
| 3 (Emitter) | Phototransistor Emitter Output | Common emitter node; used with pull-up resistor to define logic-high level on output side. |
| 4 (Collector) | Phototransistor Collector Output | Active-low switching node; sinks current when LED is illuminated; compatible with TTL/CMOS inputs. |
Key Features
| Feature | Design Value |
|---|---|
| High CTR Rank B | Guaranteed 130–260% CTR ensures stable gain over life and temperature - reduces need for external gain compensation in feedback designs. |
| 5 kVRMS Isolation | Reinforced insulation certified to UL1577 and VDE EN IEC 60747-5-5 - eliminates requirement for additional creepage/clearance PCB layout measures. |
| SL-4 Surface-Mount | Compatible with automated reflow assembly; 13" reel packaging (2,000 pcs) supports high-volume SMT production without manual handling. |
| Green & RoHS Compliant | Halogen- and antimony-free mold compound (<900 ppm Br/Cl, <1000 ppm Sb); fully compliant with EU RoHS 2015/863/EU and J-STD-020 MSL Level 1. |
Applications
| AC-DC Power Supply Feedback | Industrial PLC Digital Input |
|---|---|
|
Use Scenario: Isolating voltage feedback signal from secondary-side error amplifier to primary-side PWM controller in offline flyback converters. IC Role / Device Role / Timing Role: Signal-level galvanic isolator transmitting analog error voltage via linear CTR behavior. Use Value: Enables precise regulation while maintaining safety isolation; CTR stability over −40°C to +105°C avoids loop drift in wide-temperature deployments. |
Use Scenario: Converting 24 V DC field sensor signals to 3.3 V microcontroller-compatible logic levels in factory automation I/O modules. IC Role / Device Role / Timing Role: Digital input isolator with open-collector output driving MCU GPIO pins. Use Value: Prevents ground loop noise and protects MCU from transients; 18 µs response supports 20 kHz polling rates in real-time control cycles. |
| Motor Drive Enable Interface | Medical Equipment Isolation Barrier |
|
Use Scenario: Transmitting enable/disable commands from isolated control board to gate driver stage in brushless DC motor inverters. IC Role / Device Role / Timing Role: Logic-level signal isolator with active-low output driving enable input of half-bridge driver ICs. Use Value: Ensures safe shutdown during fault conditions; 35 V VCEO provides margin against inductive kickback spikes up to 20 V. |
Use Scenario: Isolating patient-connected sensor data lines from main system processor in portable diagnostic devices. IC Role / Device Role / Timing Role: Safety-critical isolation barrier meeting IEC 60601-1 creepage requirements via certified 5 kVRMS dielectric strength. Use Value: Eliminates need for external isolation transformers or capacitors; VDE certification streamlines regulatory approval for Class II medical systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar phototransistor optocoupler applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLP185(GB-TP,F) | Higher CTR (100–600%), same SL-4 package, but rated only to +105°C (vs. +110°C) and lacks VDE certification. | Acceptable for commercial-grade power supplies but not for medical or extended-temp industrial use requiring full VDE/UL dual certification. | Select if higher CTR margin is prioritized over extended temperature or dual-safety certification. |
| PC817X2NSZ0F | Same CTR rank (B: 130–260%), DIP-4 through-hole package, UL1577 only (no VDE), and MSL Level 3 vs. Level 1. | Suitable for prototyping or low-volume through-hole assemblies, but incompatible with automated SMT lines and fails humidity-sensitive reflow requirements. | Select only for hand-soldered evaluation or legacy DIP-4 board reuse; avoid for volume production or humid-environment applications. |
Compared with TLP185(GB-TP,F) and PC817X2NSZ0F, DPC817S-B-TR uniquely combines SL-4 SMT compatibility, VDE + UL dual safety certification, MSL Level 1 handling, and +110°C operation - making it the only choice for high-reliability, high-volume, safety-certified industrial and medical designs.
Availability
DPC817S-B-TR is available at Aetrix Electronics and suitable for AC-DC power supply feedback, industrial PLC digital input, and motor drive enable interface applications requiring stable component supply, long-lifecycle assurance, and certified isolation performance.
Supply support for DPC817S-B-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, specializing in high-reliability components for power management, signal integrity, and protection applications.
The DPC817 series belongs to Diodes' optocoupler product line, engineered specifically for safety-isolated feedback and digital signal transmission in industrial, medical, and energy-efficient power conversion systems.
FAQ
What is the maximum recommended forward current for continuous operation?
The absolute maximum forward current (IF) is 60 mA, but the device is characterized and optimized for 5–20 mA operation. Continuous use above 20 mA accelerates LED degradation and reduces CTR lifetime stability; Diodes specifies 20 mA as the maximum recommended DC operating point for 10-year reliability at +110°C.
Does DPC817S-B-TR support linear analog signal transmission?
Yes - its phototransistor output exhibits approximately linear current transfer versus input LED current within the 1–10 mA IF range, with CTR variation < ±15% across −40°C to +85°C. This enables use in analog feedback loops, though dedicated linear optocouplers (e.g., IL300) offer tighter linearity for precision applications.
Is the SL-4 package compatible with standard DIP-4 footprints?
No - SL-4 has gull-wing surface-mount leads with 2.54 mm pitch and 10.16 mm body width, while DIP-4 uses through-hole pins with 7.62 mm row spacing and 4.6 mm body width. The pad layouts, solder stencil apertures, and reflow profiles differ significantly; SL-4 requires dedicated SMT placement and reflow tooling.
What safety certifications does DPC817S-B-TR hold?
DPC817S-B-TR is certified to UL 1577 (5,000 VRMS, 1 minute) and VDE EN IEC 60747-5-5 (reinforced insulation, 5,000 VRMS, 1 minute). It also complies with CQC GB 4943.1-2022. These certifications are valid for both standard and "-V" suffix variants; the base DPC817S-B-TR meets all three standards per Diodes' DS45855 Rev. 5-2 documentation.
DPC817S-B-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):
- 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:
- Surface Mount
- Supplier Device Package:
- 4-SMD
DPC817S-B-TR FAQ
1.How can I place an order for DPC817S-B-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for DPC817S-B-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-B-TR reliable?
The price and inventory of DPC817S-B-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-B-TR is usually 5 days.
3.What payment methods are accepted for DPC817S-B-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DPC817S-B-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DPC817S-B-TR?
DPC817S-B-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DPC817S-B-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-B-TR?
For technical support, including DPC817S-B-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DPC817S-B-TR requirements.
6.How does Aetrix verify that DPC817S-B-TR is sourced from the original manufacturer or authorized distributors?
All DPC817S-B-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-B-TR meets industry standards.
7.What is the process for return or replacement of DPC817S-B-TR?
All DPC817S-B-TR units undergo pre-shipment inspection (PSI). If there is an issue with DPC817S-B-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-B-TR part is unused and in its original packaging.
Return procedure for DPC817S-B-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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