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Equivalent & Substitute Parts for P0721SARP
Part Overview
The P0721SARP is a Transient Voltage Suppressors (TVS) device manufactured by Littelfuse Inc., designed for SLIC applications with mixed technology and 88V clamping voltage in DO-214AA surface mount packaging. This part is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations. Substitute parts must maintain electrical compatibility across voltage ratings, circuit protection functionality, and physical packaging specifications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | P0721SARP |
| Manufacturer | Littelfuse Inc. |
| Category | Transient Voltage Suppressors (TVS) |
| Voltage - Clamping | 88V |
| Technology | Mixed Technology |
| Package / Case | DO-214AA, SMB |
| Mounting Type | Surface Mount |
| Number of Circuits | 1 |
| Applications | SLIC |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitute parts for the P0721SARP are qualified based on the following critical parameters:
- Voltage rating compatibility: Clamping voltage of 88V or equivalent breakover/off-state voltage specifications
- Package compatibility: DO-214AA / SMB surface mount package
- Circuit protection functionality: Single circuit TVS device for SLIC applications
- Mounting type: Surface mount configuration
- Physical form factor: Identical or functionally equivalent packaging
The substitute parts identified maintain these core electrical and mechanical specifications, ensuring direct replacement capability in existing circuit designs.
Parameter Comparison
| Parameter | P0721SARP (Main) | P0721SALRP (Direct Substitute) | SMP100LC-65 (MFR Recommended) |
|---|---|---|---|
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. | STMicroelectronics |
| Category | TVS | TVS | TVS Thyristor |
| Voltage - Clamping / Breakover | 88V | 88V | 85V (Breakover) / 65V (Off-State) |
| Package / Case | DO-214AA, SMB | DO-214AA, SMB | DO-214AA, SMB |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Number of Circuits | 1 | 1 | 1 |
| Technology | Mixed Technology | Mixed Technology | TVS Thyristor (TRISIL™) |
| Product Status | Obsolete | Active | Active |
| RoHS Status | Non-compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
P0721SALRP serves as the direct manufacturer substitute from Littelfuse Inc. This part maintains identical electrical specifications (88V clamping voltage) and physical packaging (DO-214AA, SMB) while offering the advantage of active product status and ROHS3 compliance. Selection of this substitute eliminates obsolescence risk while preserving design compatibility.
SMP100LC-65 is the manufacturer-recommended alternative from STMicroelectronics. This TVS thyristor operates with a breakover voltage of 85V and off-state voltage of 65V, providing functionally equivalent circuit protection within the specified voltage range. The SMP100LC-65 offers higher current handling capability (400A peak pulse at 8/20µs) and active product status with ROHS3 compliance. This option is suitable for applications requiring enhanced transient suppression performance.
Both substitute parts comply with RoHS3 and REACH requirements, supporting modern manufacturing and environmental standards. Selection between P0721SALRP and SMP100LC-65 depends on specific application requirements regarding current handling capacity and voltage margin specifications.
Frequently Asked Questions (FAQ)
Q: Can P0721SALRP be used as a direct replacement for P0721SARP?
A: Yes. P0721SALRP maintains identical clamping voltage (88V), package configuration (DO-214AA, SMB), and circuit protection functionality. The primary advantage is active product status, eliminating obsolescence concerns.
Q: What are the key differences between P0721SALRP and SMP100LC-65?
A: Both parts use DO-214AA, SMB packaging and provide single-circuit protection. P0721SALRP maintains 88V clamping voltage identical to the original part. SMP100LC-65 operates with 85V breakover voltage and 65V off-state voltage, with significantly higher peak pulse current rating (400A at 8/20µs versus standard ratings). The technology differs: P0721SALRP uses mixed technology while SMP100LC-65 is a TVS thyristor (TRISIL™ series).
Q: Are all substitute parts RoHS compliant?
A: P0721SALRP and SMP100LC-65 are both ROHS3 compliant. The original P0721SARP is RoHS non-compliant. For applications requiring RoHS compliance, either substitute part is suitable.
Q: Do substitute parts require circuit redesign?
A: No redesign is required for package or mounting compatibility. Both substitute parts use identical DO-214AA, SMB surface mount packaging. Electrical parameter verification against specific application voltage and current requirements is recommended during component selection.
Q: What is the inventory status of substitute parts?
A: P0721SALRP has 1136 pieces in stock. SMP100LC-65 has 55100 pieces in stock, providing greater availability for high-volume applications.
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