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ST33001D

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ST33001D

ST33001D

  • Description：ICL 33 OHM 20% 500MA 11.4MM
  • Series：ST
  • Mfr：Littelfuse Inc.
  • Package：Bulk

SKU:4fce23113a24 Category: Brand:

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Product Detailed Parameters

  • Description：ICL 33 OHM 20% 500MA 11.4MM
  • Series：ST
  • Mfr：Littelfuse Inc.
  • Package：Bulk
  • R @ 25°C：33 Ohms
  • Tolerance：±20%
  • Current - Steady State Max：500 mA
  • R @ Current：1.485 Ohms
  • Diameter：0.449" (11.40mm)
  • Lead Spacing：0.200" (5.08mm)
  • Grade：-
  • Qualification：-
  • Approval Agency：-

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ST33001D

How to buy
Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.
Payment Method
Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.
Delivery time
In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.
Freight calculation
Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.
Mode of Transportation
We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.
Return and Refund
Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.

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Buying Guide
Summary

Littelfuse Inc. ST33001D is a component in Inrush Current Limiters (ICL) category typically evaluated for fit, operating limits, and supportability in production. Key specs include Description (ICL 33 OHM 20% 500MA 11.4MM), Series (ST), and Packaging (Bulk).

Selection Notes
  • For ST33001D, make sure Current - Steady State Max (500 mA) aligns with your design targets and verification plan.
  • Confirm the tolerance (±20%) is acceptable for your accuracy and drift budget.
  • Double-check Diameter (0.449" (11.40mm)) against your specification and operating conditions.
  • Verify R @ 25°C (33 Ohms) and compare it against your reference design limits.
Alternates & Substitutions
  • For Inrush Current Limiters (ICL), treat alternates as an integration task and validate the assumptions that matter on the assembled system.
  • Before approving a second source, compare the functional mode matrix and the test conditions behind the marketing headline specs.
  • Next, validate min/max ratings and recommended operating conditions against your power rails, load, and environment.
  • For production substitutions, confirm traceability and documentation expectations so the alternate can be released cleanly.
FAQ

What should I compare when selecting an alternate for ST33001D?
Compare footprint/pinout, key electrical limits, temperature range, and interface requirements, then validate under worst-case conditions.

Can you confirm the packaging for ST33001D?
Bulk

Which Lead Spacing is specified for ST33001D?
0.200" (5.08mm)

Which R @ Current is specified for ST33001D?
1.485 Ohms

Application Scenarios

For Littelfuse Inc. ST33001D in the Inrush Current Limiters (ICL) category, teams usually prioritize documentation clarity and repeatable behavior in production. Selection depends on response time, let-through energy, surge rating, leakage, and coordination with upstream supplies and wiring. Protection devices are most effective when chosen with realistic fault models and validated in compliance testing. In automotive harnesses, protection mitigates ESD and transients during connector hot-plug and load dump events. In field service, predictable inrush behavior simplifies troubleshooting by making startup current profiles repeatable across units. In AC-DC and DC bus systems, inrush limiting protects rectifiers, fuses, and connectors when charging bulk capacitors at power-up or hot-plug.

Compatibility Advice
  • In qualification work, verify placement and airflow so resistance and trip behavior remain stable after heat soak. This keeps acceptance criteria measurable and repeatable.
  • In practice, check coordination with upstream fusing and converters so protection does not create nuisance resets before release to production.
  • In practice, check coordination with upstream supplies and secondary clamps so let-through energy stays bounded during realistic faults across temperature and supply corners.
Project Fit
  • Good fit when you can bench-verify Littelfuse Inc. ST33001D for Inrush Current Limiters (ICL) integration under realistic load and noise, and you can coordinate upstream supplies and protection so rapid restarts remain stable.
  • Poor fit when upstream supplies and protection are not coordinated, so startup stress remains unbounded, because repeatable production verification is not feasible.
ST33001DST33001D

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