Can I request technical information for ST2R509B?

Yes. Contact our team for datasheets, package information, product specifications, alternative parts and sourcing support related to ST2R509B.

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Contact our sourcing team for current stock, batch information, lead time, technical documents, alternative parts and volume pricing.

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Alternative Part Sourcing Request compatible or replacement parts when stock is limited.

Quality & Packaging Check Confirm product condition, packaging type and shipment protection before dispatch.

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Supplier review and component quality inspection support.

: Technical Documents
Datasheet and specification confirmation for engineers.

: One-Stop BOM Sourcing
Multi-part procurement and shortage sourcing assistance.

Littelfuse Inc. RFQ AVAILABLE

ST2R509B

ICL 2.5 OHM 20% 9A 22.86MM

Part Number: ST2R509B

Manufacturer: Littelfuse Inc.

Category: Inrush Current Limiters (ICL)

Package

Datasheet:: ST2R509B.pdf

Description: ICL 2.5 OHM 20% 9A 22.86MM

Select Quantity Stock: 4,497

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TECHNICAL RESOURCES

ST2R509B Technical Information

Specifications
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Hot Sale
Packaging
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Specifications

Product Attribute: Attribute Value

Part Number: ST2R509B

Manufacturer: Littelfuse Inc.

Package

Series: ST

Packaging: Bulk

Product Status: Obsolete

R @ 25°C: 2.5 Ohms

Tolerance: ±20%

Current - Steady State Max: 9 A

R @ Current: 40 mOhms

Diameter: 0.900" (22.86mm)

Lead Spacing: 0.310" (7.87mm)

Grade: -

Qualification: -

Approval Agency: -

Frequently Asked Questions

1. How can I order ST2R509B from Haishengye Electronics?

Submit an RFQ directly on this page with your required quantity, target price and delivery requirements. Our sales team will review the request and provide a quotation.

2. How does Haishengye Electronics verify the quality of ST2R509B?

We work with qualified suppliers and review sourcing channels, traceability, packaging and product condition before shipment.

3. Are the stock and price of ST2R509B updated in real time?

Electronic component inventory and prices may change frequently. Displayed values are references, and final stock and pricing will be confirmed in the quotation.

4. Which payment methods are supported?

Wire Transfer, PayPal, Alipay, WeChat, Credit Card, Western Union, MoneyGram and Escrow may be supported depending on the order and destination.

5. How is international shipping arranged?

International shipping may be arranged through DHL, UPS, FedEx, TNT and other logistics channels. Tracking information will be provided after shipment.

6. What is the return or replacement process for ST2R509B?

Contact our sales team within the agreed period if there are quantity differences, incorrect items or clear external defects. Products should remain unused and in their original packaging.

7. Can I request technical support for ST2R509B?

Yes. Contact our team for datasheets, package details, product specifications, alternative parts and sourcing assistance.

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Packaging and Shipping Protection

Step 1 Product Inspection

Step 2 Casing & Dry Pipe

Step 3 Anti-static Bags

Step 4 Inner Carton

Step 5 Shipping Label

Step 6 International Delivery

Packaging may be adjusted according to product type, quantity, moisture sensitivity and destination requirements.

ST2R509B Procurement and Technical Support

ST2R509B is manufactured by Littelfuse Inc.. This page provides purchasing information including manufacturer, category, package, datasheet, stock reference, price reference and product specifications.

Haishengye Electronics supports customers sourcing ST2R509B and related electronic components for prototype development, maintenance, NPI, production preparation and one-stop BOM procurement.

Submit an RFQ to request the latest stock, price, lead time, batch information, alternative parts, package confirmation or technical documents for ST2R509B.

Part Number: ST2R509B

Manufacturer: Littelfuse Inc.

Package

Category: Inrush Current Limiters (ICL)

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Payment Method

PayPal Bank Transfer VISA Mastercard Western Union

Transaction fees are charged according to the selected bank or payment system rules.

Shipping Method

DHL

FedEx

UPS

TNT

Shipped From

Shenzhen warehouse

Dispatch Time

Usually 1–3 business days after confirmation

Lead Time

Shipping Fee

Calculated according to destination and parcel weight

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