Name: SP-21-B
Brand: Triad Magnetics
SKU: SP-21-B
Availability: InStock
Rating: 5 (141 reviews)

SP-21-B

For Reference Only

Part Number	SP-21-B
Manufacturer	Triad Magnetics
Description	TRANSF 10K CT/ 2K CT AUDIO
Datasheet	SP-21-B Datasheet SP-21-B Specifications
Package	-
ECAD
In Stock	2,322 piece(s)
Unit Price	Request a Quote
Lead Time	To be Confirmed
Estimated Delivery Time	May 2 - May 7 (Choose Expedited Shipping)
Request for Quotation

Payment Methods
Delivery Services

Part Number # SP-21-B (Audio Transformers) is manufactured by Triad Magnetics 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 SP-21-B specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add SP-21-B with quantity into BOM. Heisener.com does NOT require any registration to request a quote of SP-21-B.

SP-21-B Specifications

Manufacturer	Triad Magnetics
Category	Transformers - Audio Transformers
Package	-
ECAD
Series	Red-Spec
Turns Ratio - Primary:Secondary	2.24:1
Impedance - Primary (Ohms)	10kCT
Impedance - Secondary (Ohms)	2kCT
DC Resistance (DCR) - Primary	1.05 kOhm
DC Resistance (DCR) - Secondary	330 Ohm
Transformer Type	Audio Coupling
Frequency Range	300Hz ~ 100kHz
Frequency Response	±2dB
Voltage - Isolation	1000VRMS @ 1 Second
Insertion Loss	-
Return Loss	-
Power Level	50mW
Operating Temperature	-
Approvals	-
Mounting Type	Through Hole
Size / Dimension	0.410" L x 0.310" W (10.41mm x 7.87mm)
Height - Seated (Max)	0.465" (11.80mm)
Termination Style	PC Pin

SP-21-B Datasheet

SP-21-B Reviews

Kair*****ynard

March 28, 2023

★ ★ ★ ★ ★

Well packaged and good condition with the parts, arrived on time, good customer service.

Beatr*****pears

March 28, 2023

★ ★ ★ ★ ★

I bought this for myself, and liked it so much. I also bought one for a friend.

San***** Jain

March 20, 2023

★ ★ ★ ★ ★

Item is as described and very good postage time. Thank you.

Marth*****chinson

March 14, 2023

★ ★ ★ ★ ★

Received Quickly. Excellent Communication. Capacitors Look Excellent

Ken***** Li

March 10, 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!

Vale*****a Liu

March 6, 2023

★ ★ ★ ★ ★

All items individually packed in anti static bags and properly labeled.

Haye*****ster

February 27, 2023

★ ★ ★ ★ ★

I have never been experienced anything wrong with my order, the logistic has always get out the same day, and the items are always well packaged.

Write a Review

★★★★★

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Thanks for Your Review!

SP-21-B Packaging

SP-21-B FAQ

1. How to order SP-21-B 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 SP-21-B is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the SP-21-B. All suppliers must pass our qualification reviews before they can publish their products including SP-21-B on Heisener; we pay more attention to the channels and quality of SP-21-B products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the SP-21-B price and inventory displayed accurate?

The price and inventory of SP-21-B 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 SP-21-B?

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 SP-21-B we delivered, we will accept the replacement or return of the SP-21-B 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 SP-21-B.

(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 SP-21-B pin diagram, SP-21-B datasheet?

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

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SP-21-B 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
UTP28SP21BU D# UTP28SP21BU	Panduit Corp	Cable Assembly Cat 6 6.4m 28AWG 8POS RJ-45 to 8POS RJ-45 PL-PL - Bulk (Alt: UTP28SP21BU) RoHS: Compliant	0
34ASP21B1M1QT D# 34ASP21B1M1QT	Grayhill Inc	Switch Toggle ON None (ON) SPDT Round Toggle Solder Lug 5A 250VAC 28VDC Panel Mount with Threads - Bulk (Alt: 34ASP21B1M1QT) RoHS: Compliant	0
UTPSP21BLY D# UTPSP21BLY	Panduit Corp	COPPER PATCH CORD CATEGORY 6 GRAY UTP - Bulk (Alt: UTPSP21BLY) RoHS: Compliant	0
34BWSP21B1M1RT D# 34BWSP21B1M1RT	Grayhill Inc	Switch Toggle ON None (ON) SPDT Round Toggle Solder Lug 20VAC 20VDC 0.4VA Panel Mount with Threads - Bulk (Alt: 34BWSP21B1M1RT) RoHS: Compliant	0
34ASP21B1M6RT D# 34ASP21B1M6RT	Grayhill Inc	Switch Toggle ON None (ON) SPDT Round Toggle PC Pins 20VAC 20VDC 0.4VA PC Mount with Bracket and Threads - Bulk (Alt: 34ASP21B1M6RT) RoHS: Compliant	0
34CMSP21B4M2RT D# 34CMSP21B4M2RT	Grayhill Inc	Switch Toggle ON None (ON) SPDT Round Toggle PC Pins 20VAC 20VDC 0.4VA PC Mount - Bulk (Alt: 34CMSP21B4M2RT) RoHS: Compliant	0
34ASP21B1M1RT D# 34ASP21B1M1RT	Grayhill Inc	Switch Toggle ON None (ON) SPDT Round Toggle Solder Lug 20VAC 20VDC 0.4VA Panel Mount with Threads - Bulk (Alt: 34ASP21B1M1RT) RoHS: Compliant	0
UTP28SP21BL D# UTP28SP21BL	Panduit Corp	Cable Assembly Cat 6 6.4m 28AWG 8POS RJ-45 to 8POS RJ-45 PL-PL - Bulk (Alt: UTP28SP21BL) RoHS: Compliant	0
UTPSP21BUY D# UTPSP21BUY	Panduit Corp	COPPER PATCH CORD CAT 6 BLACK UTP CABL - Bulk (Alt: UTPSP21BUY) RoHS: Compliant	0
34ASP21B3M6RT D# 34ASP21B3M6RT	Grayhill Inc	Switch Toggle ON None (ON) SPDT Round Toggle PC Pins 20VAC 20VDC 0.4VA PC Mount with Bracket and Threads - Bulk (Alt: 34ASP21B3M6RT) RoHS: Compliant	0

Part Number	Manufacturer	Description	Stock
34ASP21B3M6RT	Grayhill Inc	Switch Toggle ON None (ON) SPDT Round Lever PC Pins 20VAC 20VDC 0.4VA PC Mount with Bracket and Threads	0
34ASP21B1M1QT	Grayhill Inc	Switch Toggle ON None (ON) SPDT Round Lever Solder Lug 5A 250VAC 28VDC Panel Mount with Threads	0
34BWSP21B1M1RT	Grayhill Inc	TOG,MINI,S,SPDT,O-N-O,T,SL,LF	0
34CMSP21B4M2RT	Grayhill Inc	TOG,SMIN,SPDT,O-N-O,N,PC,LF	0
34ASP21B1M1RT	Grayhill Inc	Switch Toggle ON None (ON) SPDT Round Lever Solder Lug 20VAC 20VDC 0.4VA Panel Mount with Threads	0
34ASP21B1M6RT	Grayhill Inc	Switch Toggle ON None (ON) SPDT Round Lever PC Pins 20VAC 20VDC 0.4VA PC Mount with Bracket and Threads	0

Part Number	Manufacturer	Description	Stock
UTP28SP21BU D# UTP28SP21BU-ND	Panduit Corp	COPPER PATCH CORD, CATEGORY 6 PE	0
34ASP21B1M1QT D# 34ASP21B1M1QT-ND	Grayhill Inc	SWITCH TOGGLE SPDT 5A 125V	0
UTPSP21BLY D# UTPSP21BLY-ND	Panduit Corp	COPPER PATCH CORD, CAT 6, BLACK	0
34BWSP21B1M1RT D# 34BWSP21B1M1RT-ND	Grayhill Inc	SWITCH TOGGLE SPDT 0.4VA 20V	0
34ASP21B1M6RT D# 34ASP21B1M6RT-ND	Grayhill Inc	SWITCH TOGGLE SPDT 0.4VA 20V	0
34CMSP21B4M2RT D# 34CMSP21B4M2RT-ND	Grayhill Inc	SWITCH TOGGLE SPDT 0.4VA 20V	0
34ASP21B1M1RT D# 34ASP21B1M1RT-ND	Grayhill Inc	SWITCH TOGGLE SPDT 0.4VA 20V	0
UTP28SP21BUNRQ D# 298-UTP28SP21BUNRQ-ND	Panduit Corp	COPPER PATCH CORD CBL PLUG	0
UTP28SP21BL D# UTP28SP21BL-ND	Panduit Corp	COPPER PATCH CORD, CATEGORY 6 PE	0
UTPSP21BUY D# UTPSP21BUY-ND	Panduit Corp	COPPER PATCH CORD, CAT 6, BLUE U	0
SP-21-B D# SP-21-B-ND	Triad Magnetics	TRANSF 10K CT/ 2K CT AUDIO	0
UTP28SP21BU2L/N D# 298-UTP28SP21BU2L/N-ND	Panduit Corp	COPPER PATCH CORD CBL PLUG	0
34ASP21B3M6RT D# 34ASP21B3M6RT-ND	Grayhill Inc	SWITCH TOGGLE SPDT 0.4VA 20V	0

Part Number	Manufacturer	Description	Stock
34ASP21B1M6RT	Grayhill Inc	RoHS: Compliant pbFree: Yes	0
34ASP21B1M1QT	Grayhill Inc	RoHS: Compliant pbFree: Yes	0
34ASP21B3M6RT	Grayhill Inc	RoHS: Compliant pbFree: Yes	0
34CMSP21B4M2RT	Grayhill Inc	RoHS: Compliant pbFree: Yes	0
34ASP21B1M1RT	Grayhill Inc	RoHS: Compliant pbFree: Yes	0

Part Number	Manufacturer	Description	Stock
ADSP21BT101JST	Analog Devices Inc	OEM/CM QUOTES ONLY \| NO BROKERS	206495
34ASP21B3M6RT	Grayhill Inc	OEM/CM QUOTES ONLY \| NO BROKERS	119
ADSP21BST133		OEM/CM QUOTES ONLY \| NO BROKERS	3665
ADSP21BT101J5T	Analog Devices Inc	OEM/CM QUOTES ONLY \| NO BROKERS	18568
34ASP21B1M6RT	Grayhill Inc	OEM/CM QUOTES ONLY \| NO BROKERS	113
FSP21B6	TE Connectivity	OEM/CM QUOTES ONLY \| NO BROKERS	575

Part Number	Manufacturer	Description	Stock
ADSP21BP40	Analog Devices Inc	OEM/CM ONLY	3600
ADSP21BS104	ADI Electronics Inc	OEM/CM ONLY	3600
ADSP21BPZ80	ADI Electronics Inc	OEM/CM ONLY	1100
ADSP21BP66	Analog Devices Inc	OEM/CM ONLY	3600
ADSP21BP5	Analog Devices Inc	OEM/CM ONLY	600
ADSP21BT101	Analog Devices Inc	OEM/CM ONLY	9999
ADSP21BP100	Analog Devices Inc	OEM/CM ONLY	2660
ADSP21BP50	Analog Devices Inc	OEM/CM ONLY	3600
ADSP21BT101JS	Analog Devices Inc	OEM/CM ONLY	502
ADSP21BT10JST	Analog Devices Inc	OEM/CM ONLY	923
ADSP21BP80	Analog Devices Inc	OEM/CM ONLY	2700
ADSP21BT101JST	Analog Devices Inc	OEM/CM ONLY	1080
ADSP21B9NKST320	Analog Devices Inc	OEM/CM ONLY	693
ADSP21BP55	Analog Devices Inc	OEM/CM ONLY	2700
ADSP21BST133	Analog Devices Inc	OEM/CM ONLY	2871

Part Number

Manufacturer

Description

Stock

34ASP21B3M6RT

Grayhill Inc

RoHS: Compliant

105

34ASP21B1M6RT

Grayhill Inc

RoHS: Compliant

100

Part Number

Manufacturer

Description

Stock

34CMSP21B4M2RT

D# 706-34CMSP21B4M2RT

Grayhill Inc

Toggle Switches TOG,SMIN,SPDT,O-N-O,N,PC,LF

RoHS: Compliant

224

Part Number

Manufacturer

Description

Stock

UTP28SP21BL

Panduit Corp

RoHS: Compliant

Part Number

Manufacturer

Description

Stock

UTP28SP21BL

D# XSDXTD000016639

Panduit Corp

Part Number	Manufacturer	Description	Stock
UTP28SP21BU D# 38X0676	Panduit Corp	Copper Patch Cord, Category 6 Performanc / PC RoHS: Not Compliant Min Qty: 1 Container: Bulk	0
34ASP21B1M1QT D# 47M2454	Grayhill Inc	Toggle Switch, Miniature, SPDT, ON-NONE-MOM, lug, threaded, RoHS Compliant RoHS: Not Compliant Min Qty: 100 Container: Bulk	0
UTPSP21BLY D# 46W8572	Panduit Corp	Copper Patch Cord, Cat 6, Black UTP Cabl / PC RoHS: Not Compliant Min Qty: 1 Container: Bulk	0
34BWSP21B1M1RT D# 78R6852	Grayhill Inc	TOG,MINI,S,SPDT,O-N-O,T,SL,LF RoHS: Not Compliant Min Qty: 1 Container: Bulk	0
34ASP21B1M6RT D# 13N5477	Grayhill Inc	Toggle Switch Miniature SPDT ON-NONE-MOM right RoHS: Not Compliant Min Qty: 1 Container: Bulk	100
34ASP21B1M1RT D# 23M2312	Grayhill Inc	Toggle Switch, Miniature, SPDT, ON-NONE-MOM, lug, threaded, RoHS Compliant RoHS: Not Compliant Min Qty: 100 Container: Bulk	0
UTP28SP21BL D# 38X0675	Panduit Corp	Copper Patch Cord, Category 6 Performanc / PC RoHS: Not Compliant Min Qty: 1 Container: Bulk	0
UTPSP21BUY D# 46W8573	Panduit Corp	Copper Patch Cord, Cat 6, Blue UTP Cable / PC RoHS: Not Compliant Min Qty: 1 Container: Bulk	0
34ASP21B3M6RT D# 99R8916	Grayhill Inc	Toggle Switch Miniature SPDT ON-NONE-MOM right RoHS: Not Compliant Min Qty: 1 Container: Bulk	105
34CMSP21B4M2RT D# 99W5010	Grayhill Inc	Toggle Switch, Sub-Miniature, SPDT, ON-NONE-MOM, RoHS Compliant RoHS: Not Compliant Min Qty: 100 Container: Bulk	0

Part Number

Manufacturer

Description

Stock

34CMSP21B4M2RT

D# NS-34CMSP21B4M2RT

Grayhill Inc

OEM/CM ONLY

1688

ZICM357SP2-1-B

D# NS-ZICM357SP2-1-B

California Eastern Laboratories (CEL)

OEM/CM ONLY

3114

Part Number

Manufacturer

Description

Stock

34ASP21B1M6RT

Grayhill Inc

RoHS: Compliant

100

34ASP21B3M6RT

Grayhill Inc

RoHS: Compliant

105

Part Number	Manufacturer	Description	Stock
34ASP21B3M6RT D# 000000000003154737	Grayhill Inc	Toggle Switches TOG,MINI,SPDT,O-N-O,T,RAH,LF	0
UTP28SP21BU D# 000000000003963856	Panduit Corp	COPPER PATCH CORD, CATEGORY 6 PERFORMANC	0
34ASP21B1M1QT D# 000000000002407794	Grayhill Inc	Toggle Switches TOG,MINI,SPDT,O-N-O,T,SL,LF	0
UTPSP21BLY D# 000000000003802307	Panduit Corp	Wire Ducting Copper Patch Cord, Cat 6, Black UTP Cabl	0
34BWSP21B1M1RT D# 000000000003154758	Grayhill Inc	Toggle Switches TOG,MINI,S,SPDT,O-N-O,T,SL,LF ed, SPDT, ON-NONE-ON, thru-hole mount, non-threaded, RoHS Compliant	0
34CMSP21B4M2RT D# 000000000003982673	Grayhill Inc	Toggle Switches TOG,SMIN,SPDT,O-N-O,N,PC,LF	0
34ASP21B1M6RT D# 000000000002407796	Grayhill Inc	Toggle Switches TOG,MINI,SPDT,O-N-O,T,RAH,LF	0
34ASP21B1M1RT D# 000000000002407795	Grayhill Inc	Toggle Switches TOG,MINI,SPDT,O-N-O,T,SL,LF	0
UTP28SP21BL D# 000000000003963855	Panduit Corp	COPPER PATCH CORD, CATEGORY 6 PERFORMANC	0
UTPSP21BUY D# 000000000003802308	Panduit Corp	Wire Ducting Copper Patch Cord, Cat 6, Blue UTP Cable	0

Part Number	Manufacturer	Description	Stock
ADSP21BT101JST	Analog Devices Inc	OEM/CM ONLY	173519
ADSP21BST133		OEM/CM ONLY	2787
34ASP21B3M6RT	Grayhill Inc	OEM/CM ONLY	121
ADSP21BT101J5T	Analog Devices Inc	OEM/CM ONLY	14056
FSP21B6	TE Connectivity	OEM/CM ONLY	516
34ASP21B1M6RT	Grayhill Inc	OEM/CM ONLY	116

Part Number

Manufacturer

Description

Stock

34ASP21B3M6RT

D# 40083493

Grayhill Inc

Switch Toggle ON None (ON) SPDT Round Lever PC Pins 20VAC 20VDC 0.4VA PC Mount with Bracket and Threads

RoHS: Compliant

34ASP21B1M6RT

D# 40083524

Grayhill Inc

Switch Toggle ON None (ON) SPDT Round Lever PC Pins 20VAC 20VDC 0.4VA PC Mount with Bracket and Threads

RoHS: Compliant

Part Number

Manufacturer

Description

Stock

ADSP-21BT101JST

Analog Devices Inc

RFQ

357

Quick Inquiry

SP-21-B

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