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ISQ201G Optoisolator - Equivalent & Substitute Parts
Part Overview
The ISQ201G is an optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This 16-pin DIP component provides galvanic isolation up to 5300Vrms with a single channel configuration, designed for DC input applications requiring transistor-based switching outputs. The part is currently active in production with 691 units in stock. Alternative models may be required due to inventory constraints, regional availability, or specific procurement requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | ISQ201G |
| Manufacturer | Isocom Components 2004 LTD |
| Category | Optoisolators |
| Number of Channels | 1 |
| Voltage - Isolation | 5300Vrms |
| Current Transfer Ratio (Min) | 75% @ 10mA |
| Output Type | Transistor |
| Voltage - Output (Max) | 70V |
| Current - Output / Channel | 50mA |
| Vce Saturation (Max) | 400mV |
| Operating Temperature | -25°C ~ 100°C |
| Package / Case | 16-DIP (0.400", 10.16mm) |
| Mounting Type | Through Hole |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the ISQ201G is determined by strict equivalence across the following critical parameters:
- Voltage isolation rating: 5300Vrms
- Number of channels: 1
- Output type: Transistor
- Current transfer ratio minimum: 75% @ 10mA
- Maximum output voltage: 70V
- Maximum output current per channel: 50mA
- Vce saturation: 400mV maximum
- Package type: 16-DIP (0.400", 10.16mm)
- Mounting configuration: Through Hole
- Operating temperature range: -25°C ~ 100°C
The ISQ201XG meets all specified parameters and qualifies as a parametric equivalent substitute for the ISQ201G.
Parameter Comparison
| Parameter | ISQ201G | ISQ201XG | Match |
|---|---|---|---|
| Manufacturer | Isocom Components 2004 LTD | Isocom Components 2004 LTD | Yes |
| Category | Optoisolators | Optoisolators | Yes |
| Number of Channels | 1 | 1 | Yes |
| Voltage - Isolation | 5300Vrms | 5300Vrms | Yes |
| Current Transfer Ratio (Min) | 75% @ 10mA | 75% @ 10mA | Yes |
| Output Type | Transistor | Transistor | Yes |
| Voltage - Output (Max) | 70V | 70V | Yes |
| Current - Output / Channel | 50mA | 50mA | Yes |
| Vce Saturation (Max) | 400mV | 400mV | Yes |
| Operating Temperature | -25°C ~ 100°C | -25°C ~ 100°C | Yes |
| Package / Case | 16-DIP (0.400", 10.16mm) | 16-DIP (0.400", 10.16mm) | Yes |
| Mounting Type | Through Hole | Through Hole | Yes |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Yes |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | Yes |
| Product Status | Active | Active | Yes |
Engineering Selection Recommendations
Both ISQ201G and ISQ201XG are active production components from Isocom Components 2004 LTD with identical electrical and mechanical specifications. Both parts maintain ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on inventory availability and procurement lead times. The ISQ201XG currently has 812 units in stock compared to 691 units for the ISQ201G, making it a viable alternative when supply constraints exist. No functional differences exist between the two part numbers for applications requiring the specified isolation voltage, output current, and package configuration.
Frequently Asked Questions (FAQ)
Q: Can ISQ201XG be used as a direct replacement for ISQ201G?
A: Yes. The ISQ201XG is a parametric equivalent with identical electrical characteristics, isolation rating, output specifications, and 16-DIP package configuration. No circuit modifications are required.
Q: Are there any differences in compliance or certifications?
A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 1 - Unlimited).
Q: What determines substitutability for this optoisolator?
A: Substitutability is determined by matching isolation voltage (5300Vrms), number of channels (1), output type (transistor), current transfer ratio (75% minimum @ 10mA), maximum output voltage (70V), maximum output current (50mA), Vce saturation (400mV), package type (16-DIP), and operating temperature range (-25°C ~ 100°C).
Q: Are there any package or pinout differences?
A: No. Both parts use identical 16-DIP (0.400", 10.16mm) through-hole packaging with the same pin configuration.
Q: Which part should be selected for new designs?
A: Either part is suitable for new designs. Selection should be based on current inventory levels and procurement availability from your supplier.
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