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H11B1 Equivalent & Substitute Parts
Part Overview
The H11B1 is an optoisolator with Darlington output and base connection, rated for 5300Vrms isolation voltage. Manufactured by Vishay Semiconductor Opto Division, this component is classified as obsolete. Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity, system maintenance, and procurement of replacement inventory. Substitute parts must maintain electrical and mechanical compatibility within the specified parameter ranges.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Isolation Voltage | 5300Vrms |
| Number of Channels | 1 |
| Output Type | Darlington with Base |
| Current Transfer Ratio (Min) | 500% @ 1mA |
| Voltage - Output (Max) | 25V |
| Current - Output / Channel | 100mA |
| Vce Saturation (Max) | 1V |
| Operating Temperature Range | -55°C ~ 100°C |
| Package / Case | 6-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
| Input Type | DC |
Substitute Part Grouping Explanation
Substitute parts for the H11B1 are qualified based on the following critical parameters:
- Isolation voltage rating of 5300Vrms or higher
- Single-channel Darlington output configuration with base connection
- 6-DIP through-hole package matching 0.300" (7.62mm) spacing
- DC input type
- Operating temperature range of -55°C to 100°C or wider
- Vce saturation maximum of 1V or lower
- Output voltage rating of 25V or higher
The H11B1 (onsemi) and MCA230 (Isocom Components) meet these substitution criteria. Both maintain the same package footprint, isolation voltage, output configuration, and thermal operating range as the original Vishay component.
Parameter Comparison
| Parameter | H11B1 (Vishay) | H11B1 (onsemi) | MCA230 (Isocom) |
|---|---|---|---|
| Isolation Voltage | 5300Vrms | 5300Vrms | 5300Vrms |
| Number of Channels | 1 | 1 | 1 |
| Output Type | Darlington with Base | Darlington with Base | Darlington with Base |
| Current Transfer Ratio (Min) | 500% @ 1mA | 500% @ 1mA | 100% @ 10mA |
| Voltage - Output (Max) | 25V | 25V | 30V |
| Vce Saturation (Max) | 1V | 1V | 1V |
| Operating Temperature | -55°C ~ 100°C | -55°C ~ 100°C | -55°C ~ 100°C |
| Package / Case | 6-DIP (0.300", 7.62mm) | 6-DIP (0.300", 7.62mm) | 6-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Input Type | DC | DC | DC |
| Product Status | Obsolete | Obsolete | Active |
| RoHS Status | ROHS3 Compliant | Not specified | ROHS3 Compliant |
Engineering Selection Recommendations
The H11B1 (onsemi) provides direct compatibility with the original Vishay H11B1, maintaining identical electrical specifications and package configuration. Both components share obsolete status, making this option suitable for legacy system maintenance where existing inventory or documentation references the onsemi variant.
The MCA230 (Isocom Components) is the preferred substitute for new designs and long-term procurement. This component is classified as active, ensuring continued availability and supply chain stability. The MCA230 exceeds the original specifications in output voltage rating (30V vs. 25V) and maintains all critical electrical parameters within acceptable ranges. ROHS3 compliance is confirmed for both the original Vishay part and the MCA230.
Frequently Asked Questions (FAQ)
Q: Can the MCA230 replace the H11B1 in existing designs?
A: Yes. The MCA230 maintains the same 6-DIP package footprint, isolation voltage (5300Vrms), Darlington output configuration, and operating temperature range. The higher output voltage rating (30V vs. 25V) and lower current transfer ratio specification (100% @ 10mA vs. 500% @ 1mA) do not prevent substitution in applications designed for the H11B1.
Q: What is the difference between the Vishay H11B1 and onsemi H11B1?
A: Both components share identical part numbers and electrical specifications. The primary difference is manufacturer source. The onsemi version is also obsolete, making it suitable only for legacy applications requiring exact manufacturer matching.
Q: Are all substitute parts RoHS3 compliant?
A: The Vishay H11B1 and Isocom MCA230 are both ROHS3 compliant. Compliance status for the onsemi H11B1 is not specified in available documentation.
Q: Does package compatibility guarantee electrical compatibility?
A: No. While all three parts use the 6-DIP package, electrical compatibility is determined by matching isolation voltage, output configuration, current transfer ratio, and saturation voltage specifications. All three parts meet these criteria for substitution.
Q: Which substitute should be selected for new production?
A: The MCA230 is recommended for new production due to active product status, ensuring long-term availability and supply chain continuity.
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