Name: H21A3
Brand: Fairchild/ON Semiconductor
SKU: H21A3
Availability: InStock
Rating: 5 (194 reviews)

H21A3

For Reference Only

Part Number	H21A3
Manufacturer	Fairchild/ON Semiconductor
Description	SENSOR OPTO SLOT 3MM TRANS THRU
Datasheet	H21A3 Specifications
Package	PCB Mount
ECAD
In Stock	102,180 piece(s)
Unit Price	Request a Quote
Lead Time	Can Ship Immediately
Estimated Delivery Time	Jun 3 - Jun 8 (Choose Expedited Shipping)
Request for Quotation

Payment Methods
Delivery Services

Part Number # H21A3 (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 H21A3 specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add H21A3 with quantity into BOM. Heisener.com does NOT require any registration to request a quote of H21A3.

H21A3 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)	30V
Response Time	8µs, 150µs
Operating Temperature	-55°C ~ 100°C
Mounting Type	Through Hole
Package / Case	PCB Mount

H21A3 Reviews

Anni*****nton

April 2, 2023

★ ★ ★ ★ ★

I always enjoy shopping with Heisener, never disappoint me, most dependable, and no long waiting for deliveries.

Quint*****ntreras

March 21, 2023

★ ★ ★ ★ ★

Always have what I need, fast and easy for making an order, fast shipping and great service! That about covers it! Many Thanks!

Roy*****rke

March 19, 2023

★ ★ ★ ★ ★

Well packed, good item, capacitors both within 2.5% tolerance!

Genevi*****hwartz

March 18, 2023

★ ★ ★ ★ ★

Great product & fast shipping. Works as they should.

Isai*****endez

March 9, 2023

★ ★ ★ ★ ★

good item, quick delivery, prefer to recommended.

Made*****e Bera

March 8, 2023

★ ★ ★ ★ ★

A well designed product that fit my custom PCB's perfectly. Easy to use. Sturdy construction. Highly recommend to all PCB builders.

Joaq*****Moreno

March 8, 2023

★ ★ ★ ★ ★

Does what it says. As with this this type of device it is important to have it mounted so that heat can dissipate. The higher the amperage the hotter the device.

Fran*****Atkins

February 24, 2023

★ ★ ★ ★ ★

Heisener has a fantastic Web site shopping system! Best purchasing interface of the bundle.

Vale*****Kakar

February 20, 2023

★ ★ ★ ★ ★

Arrived as described and well packaged. Sent very quickly after payment.

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H21A3 Packaging

H21A3 FAQ

1. How to order H21A3 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 H21A3 is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the H21A3. All suppliers must pass our qualification reviews before they can publish their products including H21A3 on Heisener; we pay more attention to the channels and quality of H21A3 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the H21A3 price and inventory displayed accurate?

The price and inventory of H21A3 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 H21A3?

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 H21A3 we delivered, we will accept the replacement or return of the H21A3 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 H21A3.

(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 H21A3 pin diagram, H21A3 datasheet?

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

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H21A3 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

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H21A3

D# V99:2348_22608134

Isocom Components

Photointerrupter Transmissive 3mm Phototransistor 4-Pin

RoHS: Compliant

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H21A3 Series 30 V 50 mA Through Hole Single Channel Photointerrupter

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D# H21A3IS-ND

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FAC

In stock shipping within 2days

31825

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Isocom Components

H21A3 Series 30 V 50 mA Through Hole Single Channel Photointerrupter

RoHS: Compliant

pbFree: Yes

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H21A3

Fairchild Semiconductor Corporation

OEM/CM Immediate delivery

12820

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H21A3

Isocom Components

H21A3 Series 30 V 50 mA Through Hole Single Channel Photointerrupter

RoHS: Compliant

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H21A3

D# ISOC00000000082

Isocom Components

H21A3 Series 30 V 50 mA Through Hole Single Channel Photointerrupter

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Description

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TH-21A-3K-1/8-0300-M12

D# 59AH0180

Omega Engineering

Thermistors: M12 Thermistor Probes

RoHS: Not Compliant

Min Qty: 1

Container: Bulk

Part Number

Manufacturer

Description

Stock

H21A3

D# NS-H21A3

Fairchild Semiconductor Corporation

OEM/CM ONLY

8319

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Description

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H21A3

D# 4530836

Isocom Components

H21A3 Isocom, Screw Mount Slotted Optical Switch, Phototransistor Output, PK

Min Qty: 5

Container: Package

510

Part Number	Manufacturer	Description	Stock
H21A3	Fairchild Semiconductor Corporation	OEM/CM ONLY	51469
MOCH21A 3MM	LONEON	OEM/CM ONLY	1316
H21A3IS	N/A	OEM/CM ONLY	216

Part Number

Manufacturer

Description

Stock

H21A3

Fairchild Semiconductor Corporation

IN stock Immediate delivery

12835

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H21A3

Fairchild Semiconductor Corporation

shipping today

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Manufacturer

Description

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H21A3

D# 53477672

Isocom Components

Photointerrupter Transmissive 3mm Phototransistor 4-Pin

RoHS: Compliant

Part Number

Manufacturer

Description

Stock

H21A3

ISO

RFQ

5271

Part Number

Manufacturer

Description

Stock

H21A3

Isocom Components

SENSOR OPTO SLOT 3MM TRANS THRU

10415

Part Number

Manufacturer

Description

Stock

H21A3

D# 1652522

ON Semiconductor

RoHS: Compliant

Min Qty: 1

Container: Each

Quick Inquiry

H21A3

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