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PSR-29131-2 Equivalent & Substitute Parts
Part Overview
The PSR-29131-2 is a PTC resettable fuse manufactured by Littelfuse Inc. This component is classified as obsolete, indicating it is no longer in active production. The PSR-29131-2 remains RoHS compliant and is subject to ECCN EAR99 classification. With 1,052 units currently in stock, identification of equivalent substitute parts is necessary for applications requiring continued component availability and supply chain continuity.
Substiute Parts
Key Parameters
| Parameter | PSR-29131-2 |
|---|---|
| Manufacturer | Littelfuse Inc. |
| Product Type | PTC Resettable Fuse |
| Product Status | Obsolete |
| RoHS Status | RoHS Compliant |
| ECCN | EAR99 |
| HTSUS Code | 8533.40.8070 |
| Inventory Status | 1,052 Pcs New Original In Stock |
Substitute Part Grouping Explanation
Substitution of the PSR-29131-2 is based on functional equivalence within the PTC resettable fuse category. The substitute part 1210L500/12SLWR is manufactured by the same supplier, Littelfuse Inc., and belongs to the POLY-FUSE® product line. Both components share the same ECCN (EAR99) and HTSUS classification (8533.40.8070), confirming regulatory alignment.
The 1210L500/12SLWR is an active product with current manufacturing status, ensuring long-term availability. This substitute maintains RoHS compliance (ROHS3 Compliant) and includes certifications from cURus and TUV approval agencies. The polymeric construction and surface mount technology of the substitute part provide functional compatibility for applications requiring PTC resettable fuse protection.
Parameter Comparison
| Parameter | PSR-29131-2 | 1210L500/12SLWR |
|---|---|---|
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. |
| Product Type | PTC Resettable Fuse | Polymeric PTC Resettable Fuse |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS Compliant | ROHS3 Compliant |
| ECCN | EAR99 | EAR99 |
| HTSUS Code | 8533.40.8070 | 8533.40.8070 |
| Voltage - Max | Not Specified | 12V |
| Current - Hold (Ih) (Max) | Not Specified | 5 A |
| Current - Trip (It) | Not Specified | 10 A |
| Current - Max | Not Specified | 50 A |
| Operating Temperature | Not Specified | -40°C ~ 85°C |
| Mounting Type | Not Specified | Surface Mount |
| Package / Case | Not Specified | 1210 (3225 Metric), Concave |
| Approval Agency | Not Specified | cURus, TUV |
| Inventory Status | 1,052 Pcs In Stock | 3,902 Pcs In Stock |
Engineering Selection Recommendations
The 1210L500/12SLWR serves as the designated substitute for the obsolete PSR-29131-2. Selection of this substitute is supported by the following factors:
Product Status: The PSR-29131-2 is obsolete, while the 1210L500/12SLWR maintains active production status, ensuring continued availability and supply chain reliability.
Regulatory Compliance: Both components share identical ECCN (EAR99) and HTSUS (8533.40.8070) classifications. The substitute part exceeds the original RoHS requirement with ROHS3 compliance, providing enhanced environmental standards adherence.
Manufacturer Continuity: Both components are manufactured by Littelfuse Inc., maintaining design consistency and quality standards within the same product ecosystem.
Certification and Approval: The 1210L500/12SLWR carries cURus and TUV approvals, providing third-party validation of electrical safety and performance characteristics.
Inventory Availability: The substitute part maintains significantly higher inventory levels (3,902 units) compared to the original part (1,052 units), supporting sustained procurement requirements.
Frequently Asked Questions (FAQ)
Q: Why is the PSR-29131-2 being replaced?
A: The PSR-29131-2 is classified as obsolete and no longer manufactured. The 1210L500/12SLWR is the active equivalent from Littelfuse Inc., ensuring continued component availability and supply chain continuity.
Q: Are the PSR-29131-2 and 1210L500/12SLWR functionally equivalent?
A: Both components are PTC resettable fuses manufactured by Littelfuse Inc. and share identical regulatory classifications (ECCN EAR99, HTSUS 8533.40.8070). The substitute part is specified for 12V, 5A hold current operation with surface mount packaging.
Q: What is the package type of the substitute part?
A: The 1210L500/12SLWR is packaged as 1210 (3225 Metric) with concave configuration, designed for surface mount assembly. Tape & Reel (TR) packaging is available for production quantities.
Q: Does the substitute part meet RoHS requirements?
A: Yes. The 1210L500/12SLWR is ROHS3 compliant, exceeding the RoHS compliance level of the original PSR-29131-2.
Q: What certifications does the substitute part carry?
A: The 1210L500/12SLWR holds cURus and TUV approvals, providing independent verification of electrical safety and performance standards.
Q: What is the operating temperature range of the substitute part?
A: The 1210L500/12SLWR operates across -40°C to 85°C, covering standard industrial and commercial temperature requirements.
Q: Is the substitute part available in stock?
A: Yes. The 1210L500/12SLWR maintains 3,902 units in new original stock, providing immediate availability for component procurement.
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