ISP825X Isocom Phototransistor (Dual-In-Line Packages) In Stock
Isocom ISP825X is a dual-channel DC input Darlington output optocoupler in an 8-pin PDIP through-hole package, delivering 5300 V isolation voltage and 800% current transfer ratio. Rated for 70 V collector-emitter breakdown with UL and VDE approval for safety-critical designs. From $0.60 in stock worldwide shipping.
- Manufacturer
- Isocom
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- ISP825X Datasheet PDF
- Category
- Phototransistor
- Temp Range
- -30.0°C to 100.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 5300 V isolation voltage with UL Recognized and VDE Approved safety certifications for industrial and medical equipment
- 800% current transfer ratio (Darlington output) enables high output drive capability from low LED input currents of 50 mA max
- Dual independent channel configuration in 8-pin PDIP isolates 2 separate signal paths with 70 V minimum collector-emitter breakdown voltage
Applications
ISP825X is designed for DC signal isolation in industrial automation, motor drive control, and power supply feedback circuits where high voltage isolation up to 5300 V is required. The dual Darlington output channels enable simultaneous isolation of two control signals, making it suitable for PLCs, relay drivers, and safety-certified equipment requiring UL and VDE compliance.
Specifications
| Pbfree Code | Yes |
| YTEOL | 6 |
| Additional Feature | UL RECOGNIZED, VDE APPROVED |
| Coll-Emtr Bkdn Voltage-Min | 70V |
| Configuration | SEPARATE, 2 CHANNELS |
| Current Transfer Ratio-Nom | 800% |
| Dark Current-Max | 100nA |
| Forward Current-Max | 0.05A |
| Isolation Voltage-Max | 5300V |
| JESD-609 Code | e3 |
| Number of Elements | 2 |
| Optoelectronic Device Type | DARLINGTON OUTPUT OPTOCOUPLER |
| Terminal Finish | TIN |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8541.40.80.00 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What isolation voltage does ISP825X provide, and is this sufficient for industrial safety-critical designs?
ISP825X provides a maximum isolation voltage of 5300 V between input and output, which exceeds the 2500 V requirement common in industrial control safety standards. This 5300 V rating, combined with UL Recognized and VDE Approved certifications, makes ISP825X suitable for motor drives, PLCs, and medical equipment where robust galvanic isolation between high-voltage and logic-level circuits is mandatory.
How does the Darlington output stage in ISP825X compare to a single-transistor optocoupler for driving relay coils or logic inputs?
ISP825X uses a Darlington-connected output transistor pair to achieve a 800% current transfer ratio, compared to 50-150% for single-transistor optocouplers. This high CTR allows the ISP825X to source sufficient base current to drive relay coils or logic inputs at 70 V collector-emitter operating voltage from an LED forward current as low as a few milliamps, reducing the burden on the microcontroller output.
Can ISP825X replace an ILQ621 or PC827 dual optocoupler in an existing PCB design, and what pin compatibility should be checked?
ISP825X is a functional equivalent to ILQ621 and PC827 dual Darlington optocouplers sharing the same 8-pin PDIP footprint with 2.54 mm pitch through-hole leads. Verify that the host circuit tolerates ISP825X's 5300 V isolation voltage and 800% CTR, and confirm the forward current maximum of 50 mA per channel matches the LED drive circuit to ensure drop-in compatibility without redesign.
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