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PTCCL07H171FBE
Electronics Part Number
PTCCL07H171FBE-WXManufacturer
Littelfuse
PTCCL07H171FBE
Description
PTC Resettable Fuse 145V 170mA RadialInventory
325 Pcs New Original In Stock
Radial disc ceramic PTC fuse, 145V, 170mA holding; auto-reset overcurrent protection suitable for power tools, transformers, and control equipment.
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Basic cost: USD 70.00
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Shipped from Hong Kong via FedEx/DHL/UPS/TNT
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In-stock items: Ready to ship in 1-2 days
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Technical Specifications
Category
Transient Voltage Suppressors (TVS), Thyristors
Manufacturer
Littelfuse
Packaging
-
Mounting Type
Through Hole
Package / Case
3-SIP
Series
SIDACtor®
Product Status
Obsolete
Capacitance
20pF, 30pF
Supplier Device Package
TO-220 Modified
Voltage - Off State
300V
Current - Hold (Ih)
150 mA
Current - Peak Pulse (10/1000µs)
45 A
Voltage - Breakover
400V
Voltage - On State
8 V
Current - Peak Pulse (8/20µs)
150 A
Number of Elements
3
Data Sheet Document (D)
Datasheets
Download P3403AA Product Specification (PDF)
HTML Datasheet
P3403AA-DG
Environmental & Export Classification
RoHS Status
RoHS non-compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8541.30.0080
Additional Information
Standard Package
500
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Frequently Asked Questions (FAQ)
Can the P3403AA SIDACtor® be used as a drop-in replacement for a failed P3403AAL in a high-surge AC
The P3403AA can generally replace the P3403AAL in AC power line surge protection due to identical electrical specs (300V off-state, 150A 8/20µs rating), but careful verification is required. The P3403AA is listed as RoHS non-compliant, so use it only in non-RoHS-compliant legacy or industrial systems. Also, confirm mechanical compatibility—both are TO-220 modified (3-SIP), but verify lead form and PCB layout to avoid mechanical stress. Monitor long-term availability since the P3403AA is obsolete; consider redesigning with modern alternatives like the SRV05-4 for compliant, available solutions.
What are the key design-in limitations of the P3403AA SIDACtor® when protecting telecommunication li
When using the P3403AA for telecom line protection, the 8V on-state voltage limits its ability to clamp close to logic-level ICs—additional downstream protection (e.g., TVS diodes) may be needed. Its 150A 8/20µs rating handles standard surges, but repeated exposure near max rating risks latent degradation due to thermal stress. Also, the 300V off-state voltage restricts use in >240VAC environments. Ensure proper heatsinking via the TO-220 package and derate Ih (hold current) at elevated temperatures to avoid latch-up in AC applications.
How does the P3403AA compare to semiconductor TVS diodes like the SMAJ300A in high-energy transient
The P3403AA outperforms clamping TVS diodes like the SMAJ300A in high-current surge handling—150A vs ~30A (8/20µs)—making it better suited for grid-connected industrial equipment. Unlike voltage-clamping diodes, the P3403AA switches to a low-impedance state (~8V), diverting more energy. However, its 400V breakover introduces a higher let-through voltage before triggering. Use the P3403AA where robust crowbar action is needed, but pair with upstream fusing due to its latch-up behavior. Avoid in low-voltage DC systems where precise clamping is critical.
What reliability risks should be considered when integrating the obsolete P3403AA SIDACtor® into a n
Integrating the obsolete P3403AA into a new medical design introduces critical supply chain and lifecycle risks. While its 150A surge rating and low on-state voltage suit AC line protection, discontinued status increases end-of-life exposure—no recommended replacements exist. Consider redesign with active protection circuits or modern SIDACtors with similar specs. Also, its RoHS non-compliance may fail regulatory reviews. If used, stockpile long-term inventory and validate performance under worst-case surge duty cycles to mitigate latent failure risks.
How should the P3403AA be fused and laid out on a PCB to ensure safe operation during sustained over
For 277VAC applications, the P3403AA's 300V off-state voltage leaves minimal margin—ensure line voltage does not exceed 300V RMS during surges. Use a fast-acting fuse (e.g., 2A slow-blow) in series to interrupt current after triggering, as the device latches on and relies on external current interruption. Place the P3403AA close to the entry point with short, wide traces to minimize inductance, reducing transient overshoot. Add creepage distance (>5mm) due to high surge energy, and avoid placing sensitive signals nearby to prevent coupling during clamping.
Can the P3403AA SIDACtor® be used as a drop-in replacement for a failed P3403AAL in a high-surge AC
The P3403AA can generally replace the P3403AAL in AC power line surge protection due to identical electrical specs (300V off-state, 150A 8/20µs rating), but careful verification is required. The P3403AA is listed as RoHS non-compliant, so use it only in non-RoHS-compliant legacy or industrial systems. Also, confirm mechanical compatibility—both are TO-220 modified (3-SIP), but verify lead form and PCB layout to avoid mechanical stress. Monitor long-term availability since the P3403AA is obsolete; consider redesigning with modern alternatives like the SRV05-4 for compliant, available solutions.
What are the key design-in limitations of the P3403AA SIDACtor® when protecting telecommunication li
When using the P3403AA for telecom line protection, the 8V on-state voltage limits its ability to clamp close to logic-level ICs—additional downstream protection (e.g., TVS diodes) may be needed. Its 150A 8/20µs rating handles standard surges, but repeated exposure near max rating risks latent degradation due to thermal stress. Also, the 300V off-state voltage restricts use in >240VAC environments. Ensure proper heatsinking via the TO-220 package and derate Ih (hold current) at elevated temperatures to avoid latch-up in AC applications.
How does the P3403AA compare to semiconductor TVS diodes like the SMAJ300A in high-energy transient
The P3403AA outperforms clamping TVS diodes like the SMAJ300A in high-current surge handling—150A vs ~30A (8/20µs)—making it better suited for grid-connected industrial equipment. Unlike voltage-clamping diodes, the P3403AA switches to a low-impedance state (~8V), diverting more energy. However, its 400V breakover introduces a higher let-through voltage before triggering. Use the P3403AA where robust crowbar action is needed, but pair with upstream fusing due to its latch-up behavior. Avoid in low-voltage DC systems where precise clamping is critical.
What reliability risks should be considered when integrating the obsolete P3403AA SIDACtor® into a n
Integrating the obsolete P3403AA into a new medical design introduces critical supply chain and lifecycle risks. While its 150A surge rating and low on-state voltage suit AC line protection, discontinued status increases end-of-life exposure—no recommended replacements exist. Consider redesign with active protection circuits or modern SIDACtors with similar specs. Also, its RoHS non-compliance may fail regulatory reviews. If used, stockpile long-term inventory and validate performance under worst-case surge duty cycles to mitigate latent failure risks.
How should the P3403AA be fused and laid out on a PCB to ensure safe operation during sustained over
For 277VAC applications, the P3403AA's 300V off-state voltage leaves minimal margin—ensure line voltage does not exceed 300V RMS during surges. Use a fast-acting fuse (e.g., 2A slow-blow) in series to interrupt current after triggering, as the device latches on and relies on external current interruption. Place the P3403AA close to the entry point with short, wide traces to minimize inductance, reducing transient overshoot. Add creepage distance (>5mm) due to high surge energy, and avoid placing sensitive signals nearby to prevent coupling during clamping.
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Sep 15 2026
