Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
TIL197SMT&R
Isocom Components 2004 LTD
4PIN DARLINGTON OUTPUT, SINGLE O
2447 Pcs New Original In Stock
Optoisolator Darlington Output 7.5Vpk 1 Channel 4-SMD
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (281 Ratings)
TIL197SMT&R
Product Overview
1911704
DiGi Electronics Part Number
TIL197SMT&R-DGManufacturer
Isocom Components 2004 LTD
TIL197SMT&R
Description
4PIN DARLINGTON OUTPUT, SINGLE OInventory
2447 Pcs New Original In Stock
Optoisolator Darlington Output 7.5Vpk 1 Channel 4-SMD
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
Shipping & Delivery
Quality Assurance
365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
Limited Stock, Order Now - Get reliable parts without worry.
Global Shipping & Secure Packaging
Worldwide Delivery in 3-5 Business Days
100% ESD Anti-Static Packaging
Real-Time Tracking for Every Order
Secure & Flexible Payment
Credit Card, VISA, MasterCard, PayPal, Western Union, Telegraphic Transfer(T/T) and more
All payments encrypted for security
TIL197SMT&R Technical Specifications
Category
Optoisolators, Transistor, Photovoltaic Output Optoisolators
Packaging
Tape & Reel (TR)
Series
TIL197
Product Status
Active
Number of Channels
1
Voltage - Isolation
7.5Vpk
Current Transfer Ratio (Min)
500% @ 2mA
Current Transfer Ratio (Max)
7500% @ 2mA
Turn On / Turn Off Time (Typ)
-
Rise / Fall Time (Typ)
100µs, 100µs
Input Type
DC
Output Type
Darlington
Voltage - Output (Max)
35V
Current - Output / Channel
-
Voltage - Forward (Vf) (Typ)
1.2V
Current - DC Forward (If) (Max)
50 mA
Vce Saturation (Max)
1V
Operating Temperature
-55°C ~ 100°C
Mounting Type
Surface Mount
Package / Case
4-SMD, Gull Wing
Supplier Device Package
4-SMD
Datasheet & Documents
HTML Datasheet
TIL197SMT&R-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8541.49.8000
Additional Information
Other Names
58-TIL197SMT&RTR
58-TIL197SMT&RCT
58-TIL197SMT&RDKR
56-TIL197SMT&RTR-DG
56-TIL197SMT&RTR
Standard Package
1,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Les emballages sont toujours impeccables, ce qui assure une livraison sans dommage.
Dec 02, 2025
安心のサポートと低価格で、信頼して購入できました。
Dec 02, 2025
My order arrived perfectly and in pristine condition, reflecting their careful handling.
Dec 02, 2025
Their pricing makes quality technology accessible for all budgets.
Dec 02, 2025
Reliable delivery times paired with sturdy packaging make them an excellent partner.
Dec 02, 2025
Their pricing structure gives us a clear competitive advantage.
Dec 02, 2025
The packaging was clear and intact, confirming the product was well cared for during shipment.
Dec 02, 2025
The website's overall usability contributed greatly to a positive shopping experience.
Publish Evalution
Evalution Message
Please enter your review message.
Please post honest comments and do not post ilegal comments.
Frequently Asked Questions (FAQ)
Can the TIL197SMT&R be safely used as a drop-in replacement for the PC817 in a 5V digital signal isolation circuit, and what performance trade-offs should I expect?
While both the TIL197SMT&R and PC817 are single-channel optoisolators, they are not direct functional equivalents due to fundamental output architecture differences. The TIL197SMT&R uses a Darlington output stage with a typical Vce(sat) of 1V and much higher current transfer ratio (500–7500% @ 2mA), which provides higher gain but significantly slower switching—100µs rise/fall times versus ~4µs for the PC817. This makes the TIL197SMT&R unsuitable for high-speed digital signals (>10kHz) where the PC817 might suffice. Additionally, the Darlington configuration increases power dissipation and introduces higher output saturation voltage, reducing efficiency in low-voltage logic interfaces. If replacing the PC817, verify timing margins in your application and consider adding a base-emitter resistor across the output transistor to improve turn-off speed if needed.
What design risks should I consider when using the TIL197SMT&R in a 24V industrial control interface with frequent inductive load switching?
The TIL197SMT&R is rated for a maximum output voltage of 35V, so operating at 24V is within spec, but inductive loads pose reliability risks not fully addressed by the datasheet. The Darlington output lacks built-in clamping, making it vulnerable to voltage spikes during inductive kickback. Without a snubber circuit (e.g., RC network) or flyback diode across the load, repeated transients can degrade the phototransistor over time, leading to premature failure. Also, the 1V Vce(sat) at high collector currents increases power dissipation—calculate worst-case Pd = Ic × Vce(sat) to ensure junction temperature stays below 100°C, especially in enclosed industrial environments. Always include transient suppression and derate the output current by at least 20% for long-term reliability.
How does the TIL197SMT&R compare to the Vishay IL600A in terms of noise immunity and suitability for motor drive feedback isolation?
The TIL197SMT&R and Vishay IL600A serve different design priorities. The IL600A is a high-speed, high-CMTI (common-mode transient immunity) optocoupler optimized for noisy environments like motor drives, with CMTI >10kV/µs and propagation delays under 1µs. In contrast, the TIL197SMT&R has no specified CMTI and exhibits 100µs switching times, making it highly susceptible to noise-induced false triggering in high-dV/dt environments. While the TIL197SMT&R offers higher DC current gain, its slow response and lack of noise hardening make it a poor choice for direct motor feedback isolation. Reserve the TIL197SMT&R for low-frequency status signaling (e.g., relay state indication), and use the IL600A or similar high-speed isolators where signal integrity under electrical noise is critical.
Is the TIL197SMT&R reliable for long-term operation in an automotive under-hood application cycling between -40°C and 105°C?
The TIL197SMT&R has an operating temperature range of -55°C to 100°C, so sustained exposure to 105°C exceeds its maximum rating, creating a significant reliability risk. Even brief thermal excursions above 100°C can accelerate aging of the internal LED and phototransistor, reducing CTR (current transfer ratio) over time and potentially causing functional failure. Additionally, automotive environments involve thermal cycling, vibration, and humidity—factors that stress the 4-SMD gull-wing package. While MSL 1 indicates no moisture sensitivity concerns, mechanical robustness is limited compared to automotive-grade through-hole or hermetic packages. For under-hood use, consider AEC-Q101 qualified alternatives like the Broadcom ACPL-217 or switch to a more robust isolator with extended temperature certification.
Can I parallel two TIL197SMT&R channels to increase output current handling in a custom multi-chip module, and what are the stability risks?
The TIL197SMT&R is a single-channel device, so paralleling requires using multiple units—but this introduces significant current imbalance risks due to inherent CTR variation (500–7500% @ 2mA). Even with matched input currents, output currents can diverge by 10x or more because of the wide CTR distribution, leading to thermal runaway in the higher-conducting unit. Unlike power transistors, Darlington optotransistors lack ballast resistors or current-sharing mechanisms. If higher output current is needed, avoid paralleling and instead use a single TIL197SMT&R to drive a discrete BJT or MOSFET. This approach provides better control, thermal management, and reliability. Always design for the minimum CTR (500%) when calculating base drive requirements to ensure consistent turn-on across units.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
TIL197SMT&R CAD Models
Isocom Components 2004 LTD TIL197SMT&R PCB symbols & footprints
productDetail
