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MLESD24B-0603-TP Equivalent & Substitute Parts
Part Overview
The MLESD24B-0603-TP is a varistor-based transient voltage suppressor manufactured by Micro Commercial Co, designed for single-circuit surface mount applications in the 0603 (1608 Metric) package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The part operates across a temperature range of -40°C to 90°C and provides transient voltage suppression at 24V DC maximum rating.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Maximum DC Volts | 24 V |
| Number of Circuits | 1 |
| Capacitance @ Frequency | 0.3 pF @ 1 MHz |
| Operating Temperature Range | -40°C ~ 90°C (TA) |
| Package / Case | 0603 (1608 Metric) |
| Mounting Type | Surface Mount, MLCV |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the MLESD24B-0603-TP is determined by the following critical parameters:
- Voltage Rating: Reverse standoff voltage of 24V matches the maximum DC voltage specification
- Package Compatibility: 0603 (1608 Metric) surface mount package ensures mechanical and electrical fit
- Circuit Configuration: Single-circuit design requirement
- Compliance Standards: ROHS3 compliance and REACH unaffected status maintain regulatory alignment
- Moisture Sensitivity: MSL 1 rating ensures compatibility with standard handling and storage procedures
The substitute part PGB1010603NRHF from Littelfuse Inc. meets all these criteria as a TVS diode alternative with equivalent voltage suppression characteristics.
Parameter Comparison
| Parameter | MLESD24B-0603-TP (Main Part) | PGB1010603NRHF (Substitute) |
|---|---|---|
| Manufacturer | Micro Commercial Co | Littelfuse Inc. |
| Category | Transient Voltage Suppressors (TVS) | Transient Voltage Suppressors (TVS) |
| Product Status | Obsolete | Active |
| Voltage - Reverse Standoff (Typ) | 24 V | 24 V |
| Voltage - Clamping (Max) @ Ipp | Not specified | 150 V (Typ) |
| Number of Circuits | 1 | 1 |
| Package / Case | 0603 (1608 Metric) | 0603 (1608 Metric) |
| Mounting Type | Surface Mount, MLCV | Surface Mount |
| Operating Temperature Range | -40°C ~ 90°C (TA) | -65°C ~ 125°C (TJ) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
The PGB1010603NRHF qualifies as a direct substitute based on the following factors:
- Voltage Compatibility: Both parts maintain 24V reverse standoff voltage, ensuring equivalent transient suppression performance at the specified DC rating
- Package Equivalence: Identical 0603 (1608 Metric) surface mount package enables direct PCB placement without layout modification
- Regulatory Compliance: Both parts carry ROHS3 compliance and REACH unaffected status, maintaining environmental and safety standards
- Active Product Status: The substitute part is currently in active production with substantial inventory availability (779,941 pcs), ensuring long-term procurement reliability
- Thermal Performance: The substitute part extends the operating temperature range to -65°C ~ 125°C, providing broader environmental tolerance than the original specification
Frequently Asked Questions (FAQ)
Q: Can PGB1010603NRHF be used as a direct replacement for MLESD24B-0603-TP?
A: Yes. Both parts share identical 24V reverse standoff voltage, single-circuit configuration, 0603 package format, and equivalent compliance certifications. The substitute part is actively manufactured and available.
Q: What is the primary reason for substitution?
A: The MLESD24B-0603-TP is classified as obsolete. The PGB1010603NRHF provides equivalent electrical performance with active product status and reliable supply chain availability.
Q: Are there package compatibility concerns?
A: No. Both parts use the 0603 (1608 Metric) surface mount package. No PCB layout or assembly process modifications are required.
Q: How do the operating temperature ranges compare?
A: The original part operates from -40°C to 90°C. The substitute extends this range to -65°C to 125°C, offering enhanced thermal performance for applications requiring broader environmental tolerance.
Q: Are both parts RoHS and REACH compliant?
A: Yes. Both the MLESD24B-0603-TP and PGB1010603NRHF are ROHS3 compliant and REACH unaffected, maintaining regulatory alignment for industrial and commercial applications.
Q: What is the moisture sensitivity rating for both parts?
A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage and handling.
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