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2920L185DR
+NomenclaturePTC RESET FUSE 33V 1.85A 2920
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FabricantLittelfuse sa.
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Pièce fabricant #2920L185DR
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Fiche technique 2920L185DR DataSheet
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Package 2920 (7351 Metric), Concave
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En stock5519
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Spécifications
| Attribut | Valeur |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| Series | POLY-FUSE®, 2920L |
| ProductStatus | Active |
| Type | Polymeric |
| Voltage-Max | 33V |
| Current-Max | 40 A |
| Current-Hold(Ih)(Max) | 1.85 A |
| Current-Trip(It) | 3.7 A |
| TimetoTrip | 2.5 s |
| Resistance-Initial(Ri)(Min) | 50 mOhms |
| Resistance-PostTrip(R1)(Max) | 150 mOhms |
| OperatingTemperature | -40°C ~ 85°C |
| MountingType | Surface Mount |
| Package/Case | 2920 (7351 Metric), Concave |
| Size/Dimension | 0.289 L x 0.202 W (7.35mm x 5.12mm) |
| Thickness(Max) | 0.049 (1.25mm) |
Présentation
Description
These resistors are typically used to protect circuits from overcurrent conditions by acting as a resettable fuse. They allow for repeated tripping and resetting, which helps prevent damage to sensitive components without needing replacement after each incident. The 2920L185DR is commonly found in consumer electronics, telecommunications, and computer applications, where reliable circuit protection is crucial. Its design ensures low resistance and minimal power consumption, making it efficient for various electronic designs.
Equivalent
- Littelfuse's own 2920L series with similar current ratings.
- Bourns MF-MSMF185 or MF-R185 series.
- TE Connectivity's RXEF185 series.
Always verify the electrical specifications, such as hold current, trip current, voltage rating, and physical dimensions, when selecting an equivalent component.
Features
1. Form Factor: It has a compact 2920 size (7.4mm x 5.8mm), making it suitable for space-constrained applications.
2. Current Rating: This model is rated for a hold current of 1.85A.
3. Voltage Rating: It supports a maximum voltage of 60V DC.
4. Resistance: This fuse exhibits low resistance, ensuring minimal power loss and heat generation under normal operating conditions.
5. Trip Characteristics: It offers a fast response time to overcurrent conditions, protecting sensitive circuit components.
6. Resettable: Being a polymeric positive temperature coefficient (PPTC) device, it is resettable, returning to a low-resistance state after the fault condition is removed.
7. Temperature Range: It operates effectively within a wide temperature range, suitable for diverse environments.
8. Applications: Ideal for overcurrent protection in applications such as consumer electronics, automotive systems, industrial equipment, and telecommunications.
These features make the 2920L185DR a reliable choice for protecting circuits against overcurrent events.
Pinout
The device has a two-pin configuration, which is typical for such protection devices. Its primary function is to provide overcurrent protection by limiting the current flow in a circuit when a fault condition or overcurrent situation occurs. This is achieved by increasing its resistance dramatically when exposed to excessive current, thereby reducing the current to a safe level. Once the fault condition is removed, the device resets itself and returns to its low-resistance state.
This specific model, 2920L185DR, is designed to hold a current of 1.85A with a maximum voltage rating typically around 60V, making it suitable for various low-voltage applications.