Name: H21A4
Brand: Fairchild/ON Semiconductor
SKU: H21A4
Availability: InStock
Rating: 5 (188 reviews)

H21A4

For Reference Only

Part Number	H21A4
Manufacturer	Fairchild/ON Semiconductor
Description	SENSOR OPTO SLOT 3MM TRANS THRU
Datasheet	H21A4 Specifications
Package	PCB Mount
ECAD
In Stock	5,544 piece(s)
Unit Price	Request a Quote
Lead Time	Can Ship Immediately
Estimated Delivery Time	Apr 29 - May 4 (Choose Expedited Shipping)
Request for Quotation

Payment Methods
Delivery Services

Part Number # H21A4 (Optical Sensors - Photointerrupters - Slot Type - Transistor Output) is manufactured by Fairchild/ON Semiconductor 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 H21A4 specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add H21A4 with quantity into BOM. Heisener.com does NOT require any registration to request a quote of H21A4.

H21A4 Specifications

Manufacturer	Fairchild/ON Semiconductor
Category	Sensors, Transducers - Optical Sensors - Photointerrupters - Slot Type - Transistor Output
Package	PCB Mount
ECAD
Series	-
Sensing Distance	0.118" (3mm)
Sensing Method	Transmissive
Output Configuration	Phototransistor
Current - DC Forward (If) (Max)	50mA
Current - Collector (Ic) (Max)	20mA
Voltage - Collector Emitter Breakdown (Max)	55V
Response Time	8µs, 50µs
Operating Temperature	-55°C ~ 100°C
Mounting Type	Through Hole
Package / Case	PCB Mount

H21A4 Reviews

Ange*****enitez

April 9, 2023

★ ★ ★ ★ ★

Very good and very fast . 100% safe company

Yara*****aniel

March 29, 2023

★ ★ ★ ★ ★

Very friendly online shopping site - easy to navigate and it keeps vital datasheet for each product online purchase.

Baile*****hardson

March 12, 2023

★ ★ ★ ★ ★

Most of the reviews for this product were positive so I took a chance.

Alex*****r Paul

March 10, 2023

★ ★ ★ ★ ★

H21A4 arrived in great condition, very happy, Would buy again. A++ . thank you!!

Bla***** Jha

March 5, 2023

★ ★ ★ ★ ★

Arrived promptly, carefully packaged, as described, many thanks

Roge*****Rangel

February 26, 2023

★ ★ ★ ★ ★

Perfectly functioning!! on time and as described!

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H21A4 Packaging

H21A4 FAQ

1. How to order H21A4 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 H21A4 is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the H21A4. All suppliers must pass our qualification reviews before they can publish their products including H21A4 on Heisener; we pay more attention to the channels and quality of H21A4 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the H21A4 price and inventory displayed accurate?

The price and inventory of H21A4 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 H21A4?

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 H21A4 we delivered, we will accept the replacement or return of the H21A4 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 H21A4.

(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 H21A4 pin diagram, H21A4 datasheet?

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

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H21A4 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

S-1335H21-A4T2U3

D# S-1335H21-A4T2U3

ABLIC Inc

LDO Regulator Positive Single-OUT 2.1V 150mA 4-Pin HSNT-4 T/R - Tape and Reel (Alt: S-1335H21-A4T2U3)

RoHS: Compliant

S-13R1H21-A4T2U3

D# S-13R1H21-A4T2U3

ABLIC Inc

- Tape and Reel (Alt: S-13R1H21-A4T2U3)

RoHS: Compliant

Part Number

Manufacturer

Description

Stock

H21A4

Fairchild Semiconductor Corporation

N/A 3 mm SLOT WIDTH, 1 CHANNEL SLOTTED OPTICAL SWITCH TRANSISTOR OUTPUT

Part Number	Manufacturer	Description	Stock
S-1335H21-A4T2U3 D# S-1335H21-A4T2U3-ND	ABLIC Inc	IC REG LINEAR 2.1V 150MA HSNT4-B	0
H21A4 D# 2156-H21A4-FS-ND	Rochester Electronics LLC	TRANSISTOR OUTPUT SLOTTED SWITCH	0
S-13R1H21-A4T2U3 D# S-13R1H21-A4T2U3-ND	ABLIC Inc	IC REG LINEAR 2.1V 150MA HSNT4-B	0

Part Number	Manufacturer	Description	Stock
S-1335H21-A4T2U3	ABLIC Inc	RoHS: Compliant	0
17JE-25H2-1A4-CF	Fujikura America Inc	RoHS: Not Compliant	0
17JE-09H2-1A4-CF	Fujikura America Inc	RoHS: Not Compliant	0
S-13R1H21-A4T2U3	ABLIC Inc	RoHS: Compliant	0

Part Number

Manufacturer

Description

Stock

H21A4

Fairchild Semiconductor Corporation

OEM/CM Immediate delivery

86520

Part Number

Manufacturer

Description

Stock

H21A4

Isocom Components

Transistor Output Slotted Switch, 1-Channel,3mmSlotWidth

RoHS: Compliant

Part Number

Manufacturer

Description

Stock

H21A4

D# ISOC00000000083

Isocom Components

Transistor Output Slotted Switch, 1-Channel,3mmSlotWidth

Part Number

Manufacturer

Description

Stock

H21A4

D# NS-H21A4

Fairchild Semiconductor Corporation

OEM/CM ONLY

5281

Part Number	Manufacturer	Description	Stock
S-1335H21-A4T2U3	ABLIC Inc	RoHS: Compliant	0
17JE-25H2-1A4-CF	Fujikura America Inc	RoHS: Not Compliant	0
17JE-09H2-1A4-CF	Fujikura America Inc	RoHS: Not Compliant	0
S-13R1H21-A4T2U3	ABLIC Inc	RoHS: Compliant	0

Part Number

Manufacturer

Description

Stock

CH21A4D40.282M

Standard Crystal Corp

OEM/CM ONLY

Part Number

Manufacturer

Description

Stock

H21A4

Fairchild Semiconductor Corporation

IN stock Immediate delivery

86505

Part Number

Manufacturer

Description

Stock

H21A4

Fairchild Semiconductor Corporation

shipping today

86525

Part Number

Manufacturer

Description

Stock

H21A4

General Electric Company

RFQ

14543

Quick Inquiry

H21A4

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