Name: MRF581
Brand: Microsemi Corporation
SKU: MRF581
Availability: InStock
Rating: 5 (154 reviews)

MRF581

For Reference Only

Part Number	MRF581
Manufacturer	Microsemi Corporation
Description	TRANS NPN 18V 200MA MACRO X
Datasheet	MRF581 Specifications
Package	Micro-X ceramic (84C)
ECAD
In Stock	5,808 piece(s)
Unit Price	Request a Quote
Lead Time	Can Ship Immediately
Estimated Delivery Time	May 25 - May 30 (Choose Expedited Shipping)
Request for Quotation

Payment Methods
Delivery Services

Part Number # MRF581 (Transistors - Bipolar (BJT) - RF) is manufactured by Microsemi Corporation 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 MRF581 specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add MRF581 with quantity into BOM. Heisener.com does NOT require any registration to request a quote of MRF581.

MRF581 Specifications

Manufacturer	Microsemi Corporation
Category	Discrete Semiconductor Products - Transistors - Bipolar (BJT) - RF
Package	Micro-X ceramic (84C)
ECAD
Series	-
Transistor Type	NPN
Voltage - Collector Emitter Breakdown (Max)	18V
Frequency - Transition	5GHz
Noise Figure (dB Typ @ f)	3dB ~ 3.5dB @ 500MHz
Gain	13dB ~ 15.5dB
Power - Max	1.25W
DC Current Gain (hFE) (Min) @ Ic, Vce	50 @ 50mA, 5V
Current - Collector (Ic) (Max)	200mA
Operating Temperature	150°C (TJ)
Mounting Type	Surface Mount
Package / Case	Micro-X ceramic (84C)
Supplier Device Package	Micro-X ceramic (84C)

MRF581 Reviews

Zain*****ilva

April 6, 2023

★ ★ ★ ★ ★

Website and order clear, concise and user friendly. Thanks!

Ezra*****lers

April 3, 2023

★ ★ ★ ★ ★

Received Quickly. Excellent Communication. Capacitors Look Excellent

Aliso*****gherty

March 28, 2023

★ ★ ★ ★ ★

These are great for projects with the kids or doing any type of DIY projects. The case is nice to keep everything separated. Very nice.

Clair*****idson

March 24, 2023

★ ★ ★ ★ ★

These function just as well. You do need to spend some time modifying the harness, but no big deal.

Spen*****Suresh

March 18, 2023

★ ★ ★ ★ ★

Worked very well! I would highly recommend buying.

Noe*****Pena

March 15, 2023

★ ★ ★ ★ ★

The are the right size and type and do what they are designed to do.

Lilli*****avidson

March 11, 2023

★ ★ ★ ★ ★

Perfect, functional, arrived a weeks earlier, excellent Seller. Recommended

Laure*****hards

February 26, 2023

★ ★ ★ ★ ★

This is the best online shop to order electronic components. From a 30 cent item up to industrial, Customer Service is great. This company is so reliable and super easy to work with and ask questions. One CS agent even stayed after hours to get me an answer!

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MRF581 Packaging

MRF581 FAQ

1. How to order MRF581 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 MRF581 is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the MRF581. All suppliers must pass our qualification reviews before they can publish their products including MRF581 on Heisener; we pay more attention to the channels and quality of MRF581 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the MRF581 price and inventory displayed accurate?

The price and inventory of MRF581 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 MRF581?

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 MRF581 we delivered, we will accept the replacement or return of the MRF581 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 MRF581.

(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 MRF581 pin diagram, MRF581 datasheet?

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

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MRF581 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

MRF5812

Motorola Semiconductor Products

Part Number	Manufacturer	Description	Stock
MRF5812GR1	Microsemi Corporation	TRANS NPN 15V 200MA 8-SOIC	0
MRF5812GR2	Microsemi Corporation	TRANS NPN 15V 200MA 8-SOIC	0
MRF581A	Microsemi Corporation	TRANS RF NPN 5GHZ 15V MACR0 X	0
MRF581	Microsemi Corporation	RF SMALL SIGNAL TRANSISTOR BIPOLAR/HBT	0
MRF581G	Microsemi Corporation	TRANS NPN 18V 200MA MACRO X	0
MRF581AG	Microsemi Corporation	TRANS RF NPN 5GHZ 15V MACR0 X	0

Part Number	Manufacturer	Description	Stock
MRF5812GR1 D# MRF5812GR1TR-ND	Microsemi Corporation	RF TRANS NPN 15V 5GHZ 8SO	0
MRF5812MR1 D# MRF5812MR1-ND	Microsemi Corporation	TRANS NPN 15V 200MA	0
MRF5812GR2 D# MRF5812GR2TR-ND	Microsemi Corporation	RF TRANS NPN 15V 5GHZ 8SO	0
MRF5812 D# MRF5812-ND	Microsemi Corporation	RF TRANS NPN 15V 5GHZ 8SOIC	0
MRF581 D# MRF581-ND	Microsemi Corporation	RF TRANS NPN 18V 5GHZ MICRO X	0
MRF5812R1 D# MRF5812R1-ND	Microsemi Corporation	RF TRANS NPN 15V 5GHZ 8SO	0
MRF581G D# MRF581G-ND	Microsemi Corporation	RF TRANS NPN 18V 5GHZ MICRO X	0
MRF5812MR2 D# MRF5812MR2-ND	Microsemi Corporation	TRANS NPN 15V 200MA	0
MRF5812G D# MRF5812G-ND	Microsemi Corporation	RF TRANS NPN 15V 5GHZ 8SO	0
MRF581AG D# MRF581AG-ND	Microsemi Corporation	RF TRANS NPN 15V 5GHZ MACRO X	0
MRF581A D# MRF581A-ND	Microsemi Corporation	RF TRANS NPN 15V 5GHZ MICRO X	0

Part Number

Manufacturer

Description

Stock

MRF5812RG1

Microsemi Corporation

In stock shipping within 2days

120

Part Number	Manufacturer	Description	Stock
MRF5812R2	Motorola Semiconductor Products	OEM/CM QUOTES ONLY \| NO BROKERS	1172
MRF5811LT1	Motorola Semiconductor Products	OEM/CM QUOTES ONLY \| NO BROKERS	3354
MRF581AG	MICROSEMI CONDUCTOR	OEM/CM QUOTES ONLY \| NO BROKERS	3
MRF5811T1	Motorola Semiconductor Products	OEM/CM QUOTES ONLY \| NO BROKERS	6960
MRF5812MR1	Microsemi Corporation	OEM/CM QUOTES ONLY \| NO BROKERS	1477
MRF5812GR1	Microsemi Corporation	OEM/CM QUOTES ONLY \| NO BROKERS	1160
MRF5812GR2	APT	OEM/CM QUOTES ONLY \| NO BROKERS	998
MRF581A	MS	OEM/CM QUOTES ONLY \| NO BROKERS	10904
MRF581		OEM/CM QUOTES ONLY \| NO BROKERS	73196
MRF5812RI	TriQuint Semiconductor	OEM/CM QUOTES ONLY \| NO BROKERS	85
MRF5812SMD	N/A	OEM/CM QUOTES ONLY \| NO BROKERS	233
MRF581M	MICROSEMI CONDUCTOR	OEM/CM QUOTES ONLY \| NO BROKERS	22878
MRF5812R1	ON Semiconductor	OEM/CM QUOTES ONLY \| NO BROKERS	2297
MRF5811MLT1	MICROSEMI CONDUCTOR	OEM/CM QUOTES ONLY \| NO BROKERS	344508
MRF5812G		OEM/CM QUOTES ONLY \| NO BROKERS	3480
MRF5812R	Microsemi Corporation	OEM/CM QUOTES ONLY \| NO BROKERS	454
MRF5812LFR1	TriQuint Semiconductor	OEM/CM QUOTES ONLY \| NO BROKERS	1079
MRF5812	Stanley 97+	OEM/CM QUOTES ONLY \| NO BROKERS	6960

Part Number	Manufacturer	Description	Stock
MRF5811T1G	Microchip Technology Inc	OEM/CM ONLY	3700
MRF581AG	Microchip Technology Inc	OEM/CM ONLY	3814
MRF5811T1	Microchip Technology Inc	OEM/CM ONLY	6100

Part Number	Manufacturer	Description	Stock
MRF581A	Microsemi Corporation	OEM/CM Immediate delivery	16829
MRF581	Motorola Semiconductor Products	OEM/CM Immediate delivery	16383
MRF5812R1	Motorola Semiconductor Products	OEM/CM Immediate delivery	97
MRF581G	Motorola Semiconductor Products	OEM/CM Immediate delivery	16729
MRF5811LT1	Motorola Semiconductor Products	OEM/CM Immediate delivery	3000

Part Number

Manufacturer

Description

Stock

MRF5812GR1

D# 974-MRF5812GR1

Advanced Semiconductor Inc

RF Bipolar Transistors RF Transistor

RoHS: Compliant

922

Part Number	Manufacturer	Description	Stock
MRF581AG D# NS-MRF581AG	Microsemi Corporation	OEM/CM ONLY	8947
MRF5812R2 D# NS-MRF5812R2	VARIOUS	OEM/CM ONLY	3702
MRF5811LT1 D# NS-MRF5811LT1	VARIOUS	OEM/CM ONLY	2597
MRF581A D# NS-MRF581A	VARIOUS	OEM/CM ONLY	1409
MRF5812 D# NS-MRF5812	VARIOUS	OEM/CM ONLY	1478
MRF5812R1 D# NS-MRF5812R1	Microsemi Corporation	OEM/CM ONLY	1597
MRF581 D# NS-MRF581	VARIOUS	OEM/CM ONLY	9845
MRF5812R1-CT D# NS-MRF5812R1-CT	MS	OEM/CM ONLY	1179

Part Number

Manufacturer

Description

Stock

MRF5812

Motorola Semiconductor Products

Bipolar Junction Transistor, NPN Type, SO

MRF5811LT1

Motorola Semiconductor Products

UHF BAND, Si, NPN, RF SMALL SIGNAL TRANSISTOR, SOT-143

2891

Part Number

Manufacturer

Description

Stock

MRF5812RI

D# MRF5812RI

TriQuint Semiconductor

Inventory R

MRF581

D# MRF581

Motorola Semiconductor Products

Inventory R

Part Number	Manufacturer	Description	Stock
MRF5812	Microsemi Corporation	OEM/CM ONLY	404
MRF5811T1	Motorola Semiconductor Products	OEM/CM ONLY	6016
MRF5812MR1	Microsemi Corporation	OEM/CM ONLY	934
MRF5812GR2	Microsemi Corporation	OEM/CM ONLY	876
MRF5811LT1	Motorola Semiconductor Products	OEM/CM ONLY	2907
MRF581A	Microsemi Corporation	OEM/CM ONLY	10436
MRF5812RI	TriQuint Semiconductor	OEM/CM ONLY	151
MRF5812SMD	N/A	OEM/CM ONLY	217
MRF581M	Motorola Semiconductor Products	OEM/CM ONLY	22445
MRF5811MLT1	Microsemi Corporation	OEM/CM ONLY	297006
MRF5812G		OEM/CM ONLY	3031
MRF5812R	Microsemi Corporation	OEM/CM ONLY	407
MRF5812LFR1	TriQuint Semiconductor	OEM/CM ONLY	946
MRF5812R1	Microsemi Corporation	OEM/CM ONLY	1016
MRF581	Microsemi Corporation	OEM/CM ONLY	21457

Part Number	Manufacturer	Description	Stock
MRF581G	Motorola Semiconductor Products	IN stock Immediate delivery	16714
MRF5812R1	Motorola Semiconductor Products	IN stock Immediate delivery	92
MRF5811LT1	Motorola Semiconductor Products	IN stock Immediate delivery	3015
MRF581A	Microsemi Corporation	IN stock Immediate delivery	16814
MRF581	Motorola Semiconductor Products	IN stock Immediate delivery	16368

Part Number	Manufacturer	Description	Stock
MRF5811LT1	Motorola Mobility LLC	shipping today	83
MRF581A	Microsemi Corporation	shipping today	2337
MRF581	Motorola Mobility LLC	shipping today	11586
MRF5812RG1	Microsemi Corporation	shipping today	19
MRF5812R1	n/a	shipping today	32396
MRF5812	ON Semiconductor	shipping today	19796
MRF581G	Motorola Mobility LLC	shipping today	2400

Part Number	Manufacturer	Description	Stock
MRF581	Motorola Semiconductor Products	RFQ	7541
MRF5812R1	Motorola Semiconductor Products	RFQ	14810
MRF5812	Motorola Semiconductor Products	RFQ	4969

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MRF581

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