Name: SRP420
Brand: Littelfuse Inc.
SKU: SRP420
Availability: InStock
Rating: 5 (107 reviews)

SRP420

For Reference Only

Part Number	SRP420
Manufacturer	Littelfuse Inc.
Description	POLYSWITCH STRAP 4.20A HOLD
Datasheet	SRP420 Specifications
Package	Strap
ECAD
In Stock	3,186 piece(s)
Unit Price	Request a Quote
Lead Time	To be Confirmed
Estimated Delivery Time	May 16 - May 21 (Choose Expedited Shipping)
Request for Quotation

Payment Methods
Delivery Services

Part Number # SRP420 (PTC Resettable Fuses) is manufactured by Littelfuse Inc. and distributed by Heisener. Being one of the leading electronics distributors, we carry many kinds of electronic components from some of the world’s top class manufacturers. Their quality is guaranteed by its stringent quality control to meet all required standards.

For SRP420 specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add SRP420 with quantity into BOM. Heisener.com does NOT require any registration to request a quote of SRP420.

SRP420 Specifications

Manufacturer	Littelfuse Inc.
Category	Circuit Protection - PTC Resettable Fuses
Package	Strap
ECAD
Series	PolySwitch?, SRP
Type	Polymeric
Voltage - Max	30V
Current - Max	100A
Current - Hold (Ih) (Max)	4.2A
Current - Trip (It)	7.6A
Time to Trip	6s
Resistance - Initial (Ri) (Min)	12 mOhms
Resistance - Post Trip (R1) (Max)	40 mOhms
Resistance - 25°C (Typ)	-
Operating Temperature	-40°C ~ 85°C
Ratings	-
Mounting Type	User Defined
Package / Case	Strap
Size / Dimension	1.240" L x 0.522" W (31.50mm x 13.25mm)
Height - Seated (Max)	-
Thickness (Max)	0.043" (1.10mm)
Lead Spacing	-

SRP420 Reviews

Step*****e Rose

April 7, 2023

★ ★ ★ ★ ★

These did exactly what I needed them to do. Electricity only flows in one direction. Perfect.

Jeffe*****scher

March 31, 2023

★ ★ ★ ★ ★

Heisener parametric search for specific components is by far better than their competitors.

Zur*****harp

March 18, 2023

★ ★ ★ ★ ★

I am satisfied with Heisener company

Patri*****rickson

March 4, 2023

★ ★ ★ ★ ★

I've made a few purchases from Heisener and always get a friendly technician helped me with locate what I was looking for. That kind of attitude is greatly appreciated.

Jon*****tts

February 26, 2023

★ ★ ★ ★ ★

Boundless range of products, ease of search and fast delivery continue to impress. Heisener is always my first stop for electronic components.

Magn*****orar

February 21, 2023

★ ★ ★ ★ ★

Quality made product satisfied with my purchase. Thanks.

Celi*****astogi

February 20, 2023

★ ★ ★ ★ ★

It arrived on time. I was able to finish a repair before Sunday service and with no over time. Easy to work with.

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SRP420 Packaging

SRP420 FAQ

1. How to order SRP420 on Heisener?

Currently, Heisener only provide peer-to-peer order processing. While you submit the RFQ, our professional agent will contact you with the competitive prices in the global market, and our agent will prompt you to finish the order if you accept our offers.
2. How does Heisener guarantee that SRP420 is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the SRP420. All suppliers must pass our qualification reviews before they can publish their products including SRP420 on Heisener; we pay more attention to the channels and quality of SRP420 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the SRP420 price and inventory displayed accurate?

The price and inventory of SRP420 fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.
4. What forms of payment are accepted?

Wire Transfer, PayPal, Alipay, Wechat, Credit Card, Western Union, MoneyGram, and Escrow are all acceptable.

Warm Tips: Some orders in certain payment forms may require handling fee.
5. How is the shipping arranged?

Customers can choose industry-leading freight companies, including DHL, UPS, FedEx, TNT, and Registered Mail. Shipping insurance is also available.

Once your order has been processed for shipment, our salesperson will send you an email advising you of the shipping status and tracking number.

Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.
6. What is the process for return or replacement of SRP420?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the SRP420 we delivered, we will accept the replacement or return of the SRP420 only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of SRP420.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations
7.How to contact us to get technical supports, such as SRP420 pin diagram, SRP420 datasheet?

If you need any after-sales service, please do not hesitate to contact us.

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SRP420 Guarantees

Service Guarantees

We guarantee 100% customer satisfaction.

Our experienced sales team and tech support team back our services to satisfy all our customers.

Quality Guarantees

We provide 90 days warranty.

If the items you received were not in perfect quality, we would be responsible for your refund or replacement, but the items must be returned in their original condition.

Global Supply Chains - Reliable and Authorized Distributor Resources

Part Number

Manufacturer

Description

Stock

SRP420F

D# V99:2348_16264321

Littelfuse Inc

PTC Resettable Fuse 4.2A(hold) 7.6A(trip) 30V 100A 2.9W 6s 0.012Ohm SMD Solder Pad 32.4 X 13.6 X 1.1mm Bag

RoHS: Compliant

RP420012

D# V99:2348_11895082

TE Connectivity

Power Relay 12VDC 8A DPDT(29x12.6x25.5)mm THT

Part Number

Manufacturer

Description

Stock

RP420012

D# 90B4410

TE Connectivity

Electromechanical Relay DPDT 14A 12VDC 270Ohm Through Hole - Bulk (Alt: 90B4410)

Part Number

Manufacturer

Description

Stock

RASR-420(CROSS: SRP420F)

OptiFuse

5000

Part Number	Manufacturer	Description	Stock
RP420060	TE Connectivity	Lead time 91	738
SRP420	TE Connectivity	POLYSWITCH STRAP 4.20A HOLD	18484
RP420024	TE Connectivity	Min Qty 40	4560
RP420110	TE Connectivity	Lead time 77	614
RP420012	TE Connectivity	Min Qty 40	7620
SRP420SS	TE Connectivity	RESET,15V,50A IMAX,1A IHOLD,2.4A ITRIP,AXIAL,SPLIT LEADS - Bulk	0
SRP420F	TE Connectivity	POLYSWITCH STRAP 4.20A HOLD	18484

Part Number	Manufacturer	Description	Stock
RP420060 D# RP420060-ND	TE Connectivity	RELAY GEN PURPOSE DPDT 8A 60V	0
RP420012 D# PB942-ND	TE Connectivity	RELAY GEN PURPOSE DPDT 8A 12V	0
RP420024 D# PB943-ND	TE Connectivity	RELAY GEN PURPOSE DPDT 8A 24V	0
SRP420 D# SRP420-ND	Littelfuse Inc	PTC RESET FUSE 30V 4.2A STRAP	0
RP420110 D# PB2177-ND	TE Connectivity	RELAY GEN PURPOSE DPDT 8A 110V	0
SRP420F D# SRP420F-ND	Littelfuse Inc	PTC RESET FUSE 30V 4.2A STRAP	19571
RP420005 D# RP420005-ND	TE Connectivity	RELAY GENERAL PURPOSE DPDT 8A 5V	0

Part Number	Manufacturer	Description	Stock
SRP420F D# 1345979	TE Connectivity	POLYSWITCH, STRAP, 4.2A RoHS: Compliant Min Qty: 1 Container: Cut Tape	0
RP420110 D# 2885594	TE Connectivity	POWER RELAY, DPDT, 8A, 250VAC, TH RoHS: Compliant Min Qty: 1 Container: Each	0
RP420012 D# 3103330	TE Connectivity	RELAY, DPDT, 250VAC, 8A RoHS: Compliant Min Qty: 1 Container: Each	0
RP420024 D# 1703720	TE Connectivity	RELAY, DPDT, 250VAC, 8A RoHS: Compliant Min Qty: 1 Container: Each	0

Part Number

Manufacturer

Description

Stock

SRP420F

Littelfuse Inc

PPTC-STRAPS-PSW

RoHS: Compliant

pbFree: Yes

500

Part Number

Manufacturer

Description

Stock

RP420024

Schrack Technik Gmbh

in stock - can ship the same day

Part Number	Manufacturer	Description	Stock
RP420060	TE Connectivity	Power Relay 60VDC 8A DPDT(29x12.6x25.5)mm THT RoHS: Compliant	122
RP420012	TE Connectivity	Power Relay 12VDC 8A DPDT(29x12.6x25.5)mm THT RoHS: Compliant	954
RP420110	TE Connectivity	Power Relay 110VDC 8A DPDT(29x12.6x25.5)mm THT RoHS: Compliant	1355

Part Number

Manufacturer

Description

Stock

RP420110

D# 655-RP420110

TE Connectivity

General Purpose Relays DPDT 8A 110VDC POWER PCB RELAY

Part Number

Manufacturer

Description

Stock

SRP420F

D# XSFP00000184235

Littelfuse Inc

1000

Part Number	Manufacturer	Description	Stock
SRP420F D# 31K9843	Littelfuse Inc	FUSE, PTC RESET, 30V, 4.2A, STRAP, Product Range:PolySwitch SRP Series, Voltage Rating:30VDC, Holding Current:4.2A, Tripping Current:7.6A, Time to Trip:6s, Current Rating Max:100A, Operating Temperature Min:-40°C, Length:32.4mm RoHS Compliant: Yes RoHS: Compliant Min Qty: 500 Container: Bulk	0
RP420012 D# 90B4410	TE Connectivity	RELAY, DPDT, 250VAC, 8A, Contact Configuration:DPDT, Coil Voltage:12VDC, Contact Current:8A, Product Range:RPII/2 Series, Relay Mounting:Through Hole, Coil Type:Non Latching, Contact Voltage VAC:250VAC, Relay Terminals:Solder RoHS Compliant: Yes RoHS: Compliant Min Qty: 500 Container: Bulk	0
RP420060 D# 48M7803	TE Connectivity	RP420060 RoHS: Not Compliant Min Qty: 1 Container: Bulk	408
RP420024 D# 48M7801	TE Connectivity	RP420024 RoHS: Not Compliant Min Qty: 1 Container: Bulk	0
RP420110 D# 08H3601	TE Connectivity	RP420110 ROHS COMPLIANT: YES RoHS: Compliant Min Qty: 1000 Container: Bulk	0

Part Number	Manufacturer	Description	Stock
RP420005 D# NS-RP420005	TE Connectivity	OEM/CM ONLY	420021
RP420060 D# NS-RP420060	TE Connectivity	OEM/CM ONLY	420121
SRP420 D# NS-SRP420	TE Connectivity	OEM/CM ONLY	2371
RP420012 D# NS-RP420012	TE Connectivity	OEM/CM ONLY	8717
RP420615 D# NS-RP420615	TE Connectivity	OEM/CM ONLY	5552
RP420024 D# NS-RP420024	TE Connectivity	OEM/CM ONLY	2365
SRP420F D# NS-SRP420F	TE Connectivity	OEM/CM ONLY	6770
RP420F24 D# NS-RP420F24	TE Connectivity	OEM/CM ONLY	2716
RP420110 D# NS-RP420110	TE Connectivity	OEM/CM ONLY	6232
RP420524 D# NS-RP420524	TE Connectivity	OEM/CM ONLY	420620
RP420730 D# NS-RP420730	TE Connectivity	OEM/CM ONLY	7319

Part Number	Manufacturer	Description	Stock
RP420110	TE Connectivity	Power Relay 110VDC 8A DPDT(29x12.6x25.5)mm THT RoHS: Compliant	1721
RP420060	TE Connectivity	Power Relay 60VDC 8A DPDT(29x12.6x25.5)mm THT RoHS: Compliant	163
RP420012	TE Connectivity	Power Relay 12VDC 8A DPDT(29x12.6x25.5)mm THT RoHS: Compliant	1202

Part Number

Manufacturer

Description

Stock

SRP420

D# SRP420

TE Connectivity / Raychem

Inventory R

124

Part Number

Manufacturer

Description

Stock

RF1672-000

D# FUSE10258

Littelfuse Inc

4.2A 30V resettable PTCs strap

RoHS: Compliant

Part Number	Manufacturer	Description	Stock
RP420024 D# 000000000000049347	TE Connectivity	Power Relay 24VDC 14A DPDT(29x12.6x25.5)mm THT	0
RP420060 D# 000000000002453041	TE Connectivity	Power Relay 60VDC 14A DPDT( (29mm 12.6mm 25.5mm)) THT	0
RP420012 D# 000000000000049346	TE Connectivity	Power Relay 12VDC 14A DPDT( (29mm 12.6mm 25.5mm)) THT	0
RP420110 D# 000000000000708935	TE Connectivity	Power Relay 110VDC 14A DPDT( (29mm 12.6mm 25.5mm)) THT	0

Part Number	Manufacturer	Description	Stock
RP420060	TE Connectivity	OEM/CM ONLY	424
SRP420	TE Connectivity	OEM/CM ONLY	464
RP420024	TE Connectivity	OEM/CM ONLY	440
SRP4202	N/A	OEM/CM ONLY	101
RP420012	TE Connectivity	OEM/CM ONLY	2512
SRP420FND	TE Connectivity	OEM/CM ONLY	116
RP420110	TE Connectivity	OEM/CM ONLY	5773
SRP420F	TE Connectivity	OEM/CM ONLY	378

Part Number	Manufacturer	Description	Stock
RP420012	TE Connectivity	General Purpose Relays DPDT 8 A 12VDC 500	0
SRP420F	Littelfuse Inc	Resettable Fuses - PPTC 4.2A 30V pbFree: Pb-Free	0
RF1672-000	Littelfuse Inc	Resettable Fuses - PPTC 30V 4.2A-HD 100A MAX pbFree: Pb-Free	0

Part Number

Manufacturer

Description

Stock

RP420110

D# 2034000432

Schrack Technik Gmbh

RP420110 by SCHRACK relay DPDT 110VDC 8A 5-1393234-4

Part Number	Manufacturer	Description	Stock
RP420060 D# 16507789	TE Connectivity	Power Relay 60VDC 8A DPDT(29x12.6x25.5)mm THT	0
RP420110 D# 16507790	TE Connectivity	Power Relay 110VDC 8A DPDT(29x12.6x25.5)mm THT	0
RP420012 D# 17365366	TE Connectivity	Power Relay 12VDC 8A DPDT(29x12.6x25.5)mm THT	0

Part Number

Manufacturer

Description

Stock

SRP420F

D# 2786711

Littelfuse Inc

FUSE, RESETTABLE PTC, 30VDC, 4.2A, STRAP

RoHS: Compliant

Min Qty: 1

Container: Each

690

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SRP420

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