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Equivalent & Substitute Parts for 8L02-24-01 Reed Relay
Part Overview
The 8L02-24-01 is a through-hole mounted reed relay manufactured by Coto Technology, classified as a DPST (Double Pole Single Throw) relay with 500 mA contact rating and 24VDC coil voltage. This component is designated as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure supply chain availability for new production and field replacements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Coil Voltage | 24VDC |
| Contact Form | DPST-NO (2 Form A) |
| Contact Rating (Current) | 500 mA |
| Switching Voltage | 200VAC, 200VDC - Max |
| Coil Current | 12 mA |
| Mounting Type | Through Hole |
| Termination Style | PC Pin |
| Operating Temperature Range | -20°C ~ 85°C |
| Must Operate Voltage | 19.2 VDC |
| Must Release Voltage | 2 VDC |
| Operate Time | 0.5 ms |
| Release Time | 0.5 ms |
| Coil Resistance | 2 kOhms |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the 8L02-24-01 is determined by electrical and mechanical parameter equivalence within the 8L series reed relay family. The substitute part 8L02-24-11 maintains identical specifications across all critical functional parameters: coil voltage, contact form, current rating, switching voltage, coil current, operating temperature range, and timing characteristics. Both parts share the same base product number (8L02), through-hole mounting configuration, and PC pin termination style.
The primary distinction between these parts is product status and additional features. The 8L02-24-01 is obsolete, while the 8L02-24-11 is active in production. The 8L02-24-11 includes an electrostatic shield feature not present in the 8L02-24-01, providing enhanced electromagnetic compatibility without altering core relay functionality or electrical performance.
Substitution is valid when the following parameters are matched:
- Coil voltage (24VDC)
- Contact form (DPST-NO)
- Contact rating (500 mA)
- Switching voltage (200VAC/200VDC maximum)
- Mounting type (Through Hole)
- Termination style (PC Pin)
- Operating temperature range (-20°C ~ 85°C)
Parameter Comparison
| Parameter | 8L02-24-01 (Main Part) | 8L02-24-11 (Substitute) |
|---|---|---|
| Manufacturer | Coto Technology | Coto Technology |
| Series | 8L | 8L |
| Product Status | Obsolete | Active |
| Coil Voltage | 24VDC | 24VDC |
| Contact Form | DPST-NO (2 Form A) | DPST-NO (2 Form A) |
| Contact Rating (Current) | 500 mA | 500 mA |
| Switching Voltage | 200VAC, 200VDC - Max | 200VAC, 200VDC - Max |
| Coil Current | 12 mA | 12 mA |
| Coil Type | Non Latching | Non Latching |
| Features | Diode | Diode, Electrostatic Shield |
| Mounting Type | Through Hole | Through Hole |
| Termination Style | PC Pin | PC Pin |
| Must Operate Voltage | 19.2 VDC | 19.2 VDC |
| Must Release Voltage | 2 VDC | 2 VDC |
| Operate Time | 0.5 ms | 0.5 ms |
| Release Time | 0.5 ms | 0.5 ms |
| Operating Temperature | -20°C ~ 85°C | -20°C ~ 85°C |
| Coil Resistance | 2 kOhms | 2 kOhms |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
| ECCN | EAR99 | EAR99 |
Engineering Selection Recommendations
The 8L02-24-11 is the direct substitute for the obsolete 8L02-24-01. Both components are manufactured by Coto Technology and maintain full electrical and mechanical compatibility across all specified parameters. The 8L02-24-11 is currently in active production status, ensuring supply chain availability and long-term component sourcing.
Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and manufacturing. The addition of an electrostatic shield in the 8L02-24-11 provides enhanced noise immunity in electromagnetically challenging environments without introducing any functional or dimensional incompatibility with the original 8L02-24-01 design.
For applications currently using the 8L02-24-01, direct substitution with the 8L02-24-11 is supported without circuit modification or re-qualification requirements, provided the original design accommodates the through-hole PC pin termination and 24VDC coil voltage specifications.
Frequently Asked Questions (FAQ)
Q: Can the 8L02-24-11 be used as a direct replacement for the 8L02-24-01 in existing designs?
A: Yes. The 8L02-24-11 maintains identical electrical specifications, coil voltage, contact ratings, switching voltage, timing characteristics, and through-hole PC pin termination. No circuit modifications are required.
Q: What is the primary difference between the 8L02-24-01 and 8L02-24-11?
A: The 8L02-24-11 includes an electrostatic shield feature and is in active production status, whereas the 8L02-24-01 is obsolete. All core relay functionality and electrical performance remain identical.
Q: Are both parts compliant with current regulatory standards?
A: Yes. Both the 8L02-24-01 and 8L02-24-11 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.
Q: What is the operating temperature range for both relays?
A: Both parts operate across the temperature range of -20°C to 85°C, supporting industrial and commercial applications within this specification.
Q: What is the coil voltage requirement for these relays?
A: Both relays require 24VDC coil voltage with a must-operate voltage of 19.2 VDC and must-release voltage of 2 VDC.
Q: What contact configuration do these relays provide?
A: Both relays provide DPST-NO (Double Pole Single Throw, Normally Open) configuration with 2 Form A contacts, each rated for 500 mA at maximum switching voltage of 200VAC or 200VDC.
Q: Are these relays suitable for through-hole PCB mounting?
A: Yes. Both relays feature through-hole mounting with PC pin termination style, compatible with standard PCB assembly processes.
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