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Diodes Incorporated DPC817L-B-TR
- Part No.:
- DPC817L-B-TR
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-SMD, Gull Wing
- Datasheet:
-
DPC817L-B-TR.pdf
- Description:
- PHOTO COUPLER SLM-4 T&R 2K
- Quantity:
- Payment:
- Shipping:
Inventory:1,491
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Product details
Overview
DPC817L-B-TR from Diodes Incorporated is a high-isolation, surface-mount phototransistor coupler in SLM-4 package with CTR rank B (130–260% at IF = 5 mA, VCE = 5 V), 5000 VRMS input-output isolation voltage, and -55°C to +110°C operating temperature range-used for feedback control in isolated DC-DC converters and I/O signal level shifting in industrial PLCs.
For engineers reviewing the DPC817L-B-TR datasheet, DPC817L-B-TR pinout, DPC817L-B-TR application, or DPC817L-B-TR equivalent, key selection criteria include CTR consistency across temperature, creepage/clearance compliance for reinforced insulation, VCEO rating for output-side transient tolerance, and SLM-4 footprint compatibility with automated assembly on space-constrained PCBs.
Technical Context
The DPC817L-B-TR integrates a GaAs infrared LED emitter optically coupled to a silicon NPN phototransistor output stage. Its transfer function is defined by current transfer ratio (CTR) under specified bias conditions (IF = 5 mA, VCE = 5 V), with saturation voltage VCE(SAT) ≤ 0.2 V ensuring low-loss switching in digital isolation paths.
It supports bidirectional signal isolation via galvanic separation, with isolation rated per UL1577 and VDE EN IEC 60747-5-5. The device operates without external bias on the output side, requiring only collector-emitter supply (VCEO ≤ 35 V) and load resistor for pull-up functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CTR (Min/Max) | 130% / 260% at IF = 5 mA, VCE = 5 V - ensures reliable logic-level output drive across production spread and temperature drift. |
| VCEO | 35 V - defines maximum allowable collector-emitter voltage during switching transients in secondary-side circuits. |
| VISO | 5000 VRMS - certifies reinforced insulation for safety-critical AC mains-connected systems (e.g., Class II power supplies). |
| Response Time (tR/tF) | 18 µs max - supports digital signal isolation up to ~30 kHz without significant pulse distortion. |
| Operating Temp | -55°C to +110°C - enables deployment in automotive engine control modules and industrial motor drives with wide ambient swings. |
| VF (Typ) | 1.25 V at IF = 20 mA - determines forward power dissipation and series resistor sizing for LED driver circuitry. |
| VCE(SAT) | 0.1 V typical at IF = 20 mA, IC = 1 mA - minimizes output-stage conduction loss in saturated-switching applications. |
Pinout & Package
SLM-4 surface-mount package: 4-pin, gull-wing lead form, 2.54 mm pitch, 11.50–12.10 mm body length, 7.32–7.92 mm height, matte tin-plated leads compliant with MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | LED anode input | Positive terminal of infrared emitter; requires current-limiting resistor referenced to system ground or controller VDD. |
| 2 (Cathode) | LED cathode input | Emitter-side return path for LED current; connects to ground or low-side switch in driving circuit. |
| 3 (Emitter) | Phototransistor emitter output | Common reference node for output stage; typically tied to system ground on isolated secondary side. |
| 4 (Collector) | Phototransistor collector output | Active output node; pulled high via external resistor to VCC_ISO and sinks current when LED is illuminated. |
Key Features
| Feature | Design Value |
|---|---|
| High CTR Rank B | 130–260% range ensures sufficient gain margin for aging and temperature-induced degradation in closed-loop feedback paths. |
| 5000 VRMS Isolation | UL1577 and VDE EN IEC 60747-5-5 certified - meets reinforced insulation requirements for medical and industrial safety standards. |
| SLM-4 Surface-Mount Package | 11.88 mm × 7.62 mm footprint with gull-wing leads - optimized for reflow assembly and high-density board layouts. |
| Lead-Free & Halogen-Free | RoHS 3 compliant with <900 ppm Br/Cl and <1000 ppm Sb - satisfies environmental mandates for global electronics manufacturing. |
| Wide Temperature Range | -55°C to +110°C operation - supports reliability in under-hood automotive and outdoor industrial environments. |
Applications
| Switched-Mode Power Supply Feedback | Industrial Digital I/O Isolation |
|---|---|
Use Scenario: Primary-side controller monitors secondary-side output voltage via optocoupler-based error amplifier feedback loop. IC Role / Device Role / Timing Role: Signal-level isolator providing galvanic separation between primary and secondary grounds while transmitting analog error correction signals. Use Value: Maintains regulation accuracy despite ground potential differences up to 5000 VRMS, enabling compact, efficient Class II AC-DC adapters. |
Use Scenario: PLC input module detects 24 V DC field sensor signals while protecting internal logic from ESD and surge events. IC Role / Device Role / Timing Role: Digital signal isolator converting externally referenced inputs into internally referenced logic levels with immunity to common-mode noise. Use Value: Enables >1 kV common-mode transient immunity and eliminates ground loops in factory-floor automation systems. |
| Motor Drive Gate Signal Isolation | Medical Equipment Patient Monitoring Interface |
Use Scenario: Isolating PWM gate drive signals from microcontroller outputs to high-voltage half-bridge MOSFET drivers in BLDC inverters. IC Role / Device Role / Timing Role: Digital isolator preserving edge timing integrity (<18 µs rise/fall) while blocking high dv/dt noise from power stage switching. Use Value: Prevents false triggering of power devices and maintains safe operation under fast-switching conditions (e.g., 20 kHz PWM). |
Use Scenario: Separating patient-connected analog front-end sensors from main processing unit in portable ECG monitors. IC Role / Device Role / Timing Role: Safety barrier component meeting IEC 60601-1 creepage/clearance and isolation voltage requirements for applied parts. Use Value: Provides certified 5000 VRMS isolation to protect patients from hazardous leakage currents in battery-powered diagnostic devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar phototransistor coupler applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLP185(GB-TP,F) | CTR 100–200%, VCEO = 80 V, SO-4 package, higher VCEO but lower CTR range than DPC817L-B-TR. | Preferred where higher output-side voltage tolerance is required (e.g., 48 V bus monitoring), but less suitable for tight CTR-margin designs. | Select TLP185 if VCEO > 35 V is mandatory; verify CTR stability over lifetime in feedback loops. |
| PC817XNIP0X | CTR 130–260%, DIP-4 through-hole package, identical CTR bin but larger footprint and no SLM-4 reflow compatibility. | Suitable for legacy through-hole assembly or prototyping, but incompatible with fine-pitch SMT lines used for DPC817L-B-TR. | Choose PC817XNIP0X only for manual assembly or where board real estate allows DIP-4 spacing. |
Compared with TLP185(GB-TP,F) and PC817XNIP0X, DPC817L-B-TR offers optimal balance of high CTR consistency, SLM-4 surface-mount compatibility, and certified 5000 VRMS isolation-making it preferred for high-volume, space-constrained, safety-certified power and industrial control designs.
Availability
DPC817L-B-TR is available at Aetrix Electronics and suitable for switched-mode power supply feedback, industrial digital I/O isolation, and motor drive gate signal isolation requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for DPC817L-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, 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 galvanic isolation in power conversion, industrial automation, and safety-critical end equipment.
FAQ
What is the minimum forward current required to reliably saturate the output transistor?
The DPC817L-B-TR achieves guaranteed saturation (VCE(SAT) ≤ 0.2 V) with IF ≥ 5 mA at VCE = 5 V. At lower IF (e.g., 2 mA), CTR drops significantly-designs should maintain ≥5 mA drive to ensure robust switching margins across temperature and lifetime.
Does DPC817L-B-TR support AC signal transmission?
No-it is a DC-coupled phototransistor coupler optimized for digital or slowly varying analog signals. Its 18 µs response time and lack of linearized transfer curve make it unsuitable for audio or high-frequency AC coupling; use linear optocouplers like IL300 for true analog isolation.
Can DPC817L-B-TR be used in AEC-Q101 qualified automotive applications?
While DPC817L-B-TR meets industrial temperature and isolation specs, it is not AEC-Q101 qualified. Diodes offers automotive-grade variants (e.g., DPC817W-B-TU-V) with PPAP documentation and IATF 16949 manufacturing-consult Diodes' automotive product team for qualified alternatives.
What is the creepage and clearance distance for the SLM-4 package?
The SLM-4 package provides ≥8.0 mm creepage and ≥7.0 mm clearance between input and output pins per Diodes' package outline drawings and UL1577 certification-meeting reinforced insulation requirements for 250 V RMS working voltage in pollution degree 2 environments.
DPC817L-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
DPC817L-B-TR FAQ
1.How can I place an order for DPC817L-B-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for DPC817L-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 DPC817L-B-TR reliable?
The price and inventory of DPC817L-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 DPC817L-B-TR is usually 5 days.
3.What payment methods are accepted for DPC817L-B-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DPC817L-B-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DPC817L-B-TR?
DPC817L-B-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DPC817L-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 DPC817L-B-TR?
For technical support, including DPC817L-B-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DPC817L-B-TR requirements.
6.How does Aetrix verify that DPC817L-B-TR is sourced from the original manufacturer or authorized distributors?
All DPC817L-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 DPC817L-B-TR meets industry standards.
7.What is the process for return or replacement of DPC817L-B-TR?
All DPC817L-B-TR units undergo pre-shipment inspection (PSI). If there is an issue with DPC817L-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 DPC817L-B-TR part is unused and in its original packaging.
Return procedure for DPC817L-B-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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