Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
SFH617A-1
Isocom Components 2004 LTD
4PIN TRANSISTOR OUTPUT, SINGLE O
2163 Pcs New Original In Stock
Optoisolator Transistor Output 7.5Vpk 1 Channel 4-DIP
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (129 Ratings)
SFH617A-1
Product Overview
1914919
DiGi Electronics Part Number
SFH617A-1-DGManufacturer
Isocom Components 2004 LTD
SFH617A-1
Description
4PIN TRANSISTOR OUTPUT, SINGLE OInventory
2163 Pcs New Original In Stock
Optoisolator Transistor Output 7.5Vpk 1 Channel 4-DIP
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
SFH617A-1 Technical Specifications
Category
Optoisolators, Transistor, Photovoltaic Output Optoisolators
Packaging
Tube
Series
SFH617A
Product Status
Active
Number of Channels
1
Voltage - Isolation
7.5Vpk
Current Transfer Ratio (Min)
40% @ 10mA
Current Transfer Ratio (Max)
80% @ 10mA
Turn On / Turn Off Time (Typ)
-
Rise / Fall Time (Typ)
4µs, 3µs
Input Type
DC
Output Type
Transistor
Voltage - Output (Max)
70V
Current - Output / Channel
50mA
Voltage - Forward (Vf) (Typ)
1.65V (Max)
Current - DC Forward (If) (Max)
50 mA
Vce Saturation (Max)
400mV
Operating Temperature
-30°C ~ 100°C
Mounting Type
Through Hole
Package / Case
4-DIP (0.300", 7.62mm)
Supplier Device Package
4-DIP
Datasheet & Documents
HTML Datasheet
SFH617A-1-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
56-SFH617A-1
56-SFH617A-1-DG
58-SFH617A-1
Standard Package
100
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Nous recommandons vivement DiGi Electronics pour la qualité de leurs produits et leur support dédié.
Dec 02, 2025
The packaging was sturdy and reliable, safeguarding the contents perfectly.
Dec 02, 2025
Their products' quality helps me achieve the highest standards in my DIY projects.
Dec 02, 2025
DiGi Electronics delivers fantastic value—affordable prices combined with careful packaging.
Dec 02, 2025
Their support staff patiently guides me through troubleshooting steps, saving me time and effort.
Dec 02, 2025
The eco-conscious packaging and prompt shipping made my shopping experience very positive.
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 SFH617A-1 be used to isolate a 24V digital input signal from an industrial PLC, and what are the key risks in driving the input side with a 3.3V microcontroller?
The SFH617A-1 can isolate a 24V digital input when used with proper input-side current limiting, but driving its LED directly from a 3.3V MCU is risky due to the typical forward voltage (Vf) of 1.65V (max 1.65V). At 3.3V, you may only achieve ~1.65V headroom, limiting forward current (If) and potentially reducing CTR below the guaranteed 40% at 10mA. This could result in insufficient output current to reliably switch the load. To mitigate, use a series resistor to target 5–10mA If and ensure worst-case CTR meets your output load requirements. Alternatively, consider a logic-level optoisolator like the LTV-817S or add a buffer transistor between the MCU and SFH617A-1 input.
What are the reliability concerns when operating the SFH617A-1 near its maximum junction temperature in an enclosed industrial control panel?
Operating the SFH617A-1 near its 100°C maximum operating temperature—especially in poorly ventilated enclosures—can accelerate LED degradation and reduce long-term CTR stability. The SFH617A-1 has no specified lifetime derating curve, so sustained high temperatures may cause premature failure or increased Vce(sat), affecting signal integrity. To ensure reliability, maintain ambient temperature below 85°C, provide adequate airflow, and avoid stacking heat-generating components nearby. If thermal cycling is expected, consider derating the forward current by 20% and validating performance over temperature during qualification testing.
Can I replace the Vishay IL600A with the SFH617A-1 in a high-noise motor drive interface without redesigning the PCB?
While both are single-channel transistor-output optoisolators in 4-DIP packages, direct replacement of the IL600A with the SFH617A-1 is not recommended without verification. The SFH617A-1 has a lower isolation voltage (7.5Vpk vs. IL600A’s 5.3kVrms) and different CTR characteristics, which may affect noise immunity and output drive capability in high-dV/dt environments like motor drives. Additionally, the SFH617A-1’s rise/fall times (4µs/3µs) are slower than the IL600A’s, potentially increasing susceptibility to false triggering. If replacing, add a pull-down resistor on the output and validate signal integrity under EMI stress. For high-noise applications, consider reinforced isolators like the ACPL-271-500E instead.
How should I design the output stage of the SFH617A-1 when driving a 50mA inductive load, and what protection is necessary to prevent damage?
When using the SFH617A-1 to switch a 50mA inductive load (e.g., relay coil), the output transistor must be protected against back-EMF. The SFH617A-1’s output can handle up to 70V and 50mA, but without a flyback diode across the inductive load, voltage spikes can exceed Vce(max) and damage the device. Always include a reverse-biased diode (e.g., 1N4148 or 1N4007) across the load. Additionally, ensure the load current does not exceed 50mA continuously—derate to 40mA for margin. For faster turn-off, add a pull-down resistor (10kΩ) at the collector to discharge parasitic capacitance, improving noise immunity in switching applications.
Is the SFH617A-1 suitable for safety-critical isolation in medical equipment, and what certification gaps should I be aware of?
The SFH617A-1 is not recommended for safety-critical isolation in medical equipment due to lack of reinforced insulation certification (e.g., IEC 60601-1). While it meets basic isolation at 7.5Vpk, it does not provide the required creepage, clearance, or withstand voltage for patient-connected applications. Additionally, it lacks agency certifications (UL, VDE, CSA) typically required for medical designs. For such applications, use certified reinforced optoisolators like the Toshiba TLP785(GB) or Broadcom ACPL-M71T, which offer 5kVrms isolation and full medical compliance. If the SFH617A-1 is used only for signal-level isolation in non-patient-contact circuits, ensure it is part of a larger safety architecture with redundant protection.
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.
SFH617A-1 CAD Models
Isocom Components 2004 LTD SFH617A-1 PCB symbols & footprints
productDetail
