Request Quote
(Ships tomorrow)
Equivalent & Substitute Parts for PR222J2
Part Overview
The PR222J2 is an NTC thermistor bead manufactured by Littelfuse Inc., designed for temperature sensing applications. It features a resistance of 2.252kΩ at 25°C with a B0/50 value of 3892K, housed in an epoxy bead package with 1.50" lead wires. The PR222J2 is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance @ 25°C | 2.252kΩ |
| B0/50 Value | 3892K |
| Operating Temperature Range | -55°C to 80°C |
| Power Dissipation (Max) | 30 mW |
| Lead Wire Length | 1.50" (38.00mm) |
| Package Type | Bead, Epoxy |
| Mounting Type | Free Hanging |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
The PS222J2 qualifies as a direct substitute for the PR222J2 based on the following critical parameters:
- Resistance Match: Both components maintain 2.252kΩ resistance at 25°C, ensuring equivalent thermal response characteristics in the primary operating point.
- B-Value Compatibility: The B0/50 values are 3892K (PR222J2) and 3890K (PS222J2), representing a negligible 0.05% variance within acceptable engineering tolerance for NTC thermistor applications.
- Power Dissipation: Both parts are rated at 30 mW maximum, ensuring identical thermal load handling.
- Physical Form Factor: Identical bead epoxy package with 1.50" lead wires and free-hanging mounting configuration.
- Regulatory Compliance: Both components maintain ROHS3 compliance and EAR99 ECCN classification.
The PS222J2 is an active product with expanded operating temperature range (-80°C to 150°C versus -55°C to 80°C), providing enhanced flexibility for applications requiring extended thermal operation.
Parameter Comparison
| Parameter | PR222J2 (Obsolete) | PS222J2 (Active) |
|---|---|---|
| Manufacturer | Littelfuse Inc. | Littelfuse |
| Resistance @ 25°C | 2.252kΩ | 2.252kΩ |
| Resistance Tolerance | ±0.05°C | ±0.1°C |
| B0/50 Value | 3892K | 3890K |
| Operating Temperature | -55°C to 80°C | -80°C to 150°C |
| Power - Max | 30 mW | 30 mW |
| Lead Wire Length | 1.50" (38.00mm) | 1.50" (38.00mm) |
| Package / Case | Bead, Epoxy | Bead, Epoxy |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Obsolete | Active |
Engineering Selection Recommendations
The PS222J2 is the direct substitute for the PR222J2. Selection is based on the following engineering criteria:
- Product Status: The PS222J2 is an active product with full manufacturing support and documented availability (34,523 units in stock), whereas the PR222J2 is obsolete with limited remaining inventory (763 units).
- Regulatory Compliance: Both components maintain identical ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity in applications subject to environmental directives.
- Thermal Performance: The PS222J2 provides an extended operating temperature range that encompasses the PR222J2 specification, making it suitable for both legacy and new applications.
- Electrical Equivalence: Resistance and power dissipation specifications are identical, ensuring drop-in compatibility in existing circuit designs.
Frequently Asked Questions (FAQ)
Q: Can the PS222J2 be used as a direct replacement for the PR222J2 in existing designs?
A: Yes. The PS222J2 meets all electrical and mechanical specifications of the PR222J2. Both components share identical resistance values, power ratings, lead wire dimensions, and package configuration. The PS222J2 is suitable for direct substitution in applications operating within the PR222J2 temperature range of -55°C to 80°C.
Q: What is the difference in B-value between these components?
A: The PR222J2 has a B0/50 value of 3892K, while the PS222J2 has a B0/50 value of 3890K. This represents a 0.05% variance, which is negligible for NTC thermistor applications and does not affect functional compatibility.
Q: Are there packaging differences between the PR222J2 and PS222J2?
A: Both components use identical bead epoxy packaging with 1.50" lead wires and free-hanging mounting configuration. The primary packaging difference is that the PS222J2 is supplied in bulk packaging, whereas the PR222J2 was supplied in standard packaging.
Q: Does the PS222J2 have a wider operating temperature range?
A: Yes. The PS222J2 operates from -80°C to 150°C, compared to the PR222J2 range of -55°C to 80°C. This extended range provides additional design flexibility for applications requiring operation at lower or higher temperatures.
Q: Are both components RoHS compliant?
A: Yes. Both the PR222J2 and PS222J2 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts