Name: ST-3-120
Brand: Signal Transformer
SKU: ST-3-120
Availability: InStock
Rating: 5 (108 reviews)

ST-3-120

For Reference Only

Part Number	ST-3-120
Manufacturer	Signal Transformer
Description	XFRMR LAMINATED 2.4VA THRU HOLE
Datasheet	ST-3-120 Datasheet ST-3-120 Specifications
Package	-
ECAD
In Stock	8,748 piece(s)
Unit Price	Request a Quote
Lead Time	To be Confirmed
Estimated Delivery Time	May 5 - May 10 (Choose Expedited Shipping)
Request for Quotation

Payment Methods
Delivery Services

Part Number # ST-3-120 (Power Transformers) is manufactured by Signal Transformer 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 ST-3-120 specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add ST-3-120 with quantity into BOM. Heisener.com does NOT require any registration to request a quote of ST-3-120.

ST-3-120 Specifications

Manufacturer	Signal Transformer
Category	Transformers - Power Transformers
Package	-
ECAD
Series	ST
Type	Laminated Core
Voltage - Primary	115V
Voltage - Secondary (Full Load)	Parallel 60V, Series 120V
Current - Output (Max)	Parallel 40mA, Series 20mA
Primary Winding(s)	Single
Secondary Winding(s)	Dual
Center Tap	No
Power - Max	2.4 VA
Mounting Type	Through Hole
Termination Style	PC Pin
Size / Dimension	34.90mm L x 28.60mm W
Height - Seated (Max)	30.80mm
Voltage - Isolation	2500Vrms
Weight	0.25 lb (113.4g)

ST-3-120 Datasheet

ST-3-120 Reviews

Any*****once

March 25, 2023

★ ★ ★ ★ ★

Very professional sellers, they have adopted MSL packaging for different parts.

Nal***** Orr

March 16, 2023

★ ★ ★ ★ ★

Excellent service over extended period of time. Incredibly fast shipping, never any errors. Couldn't be more pleased.

Charl*****mphrey

March 15, 2023

★ ★ ★ ★ ★

This help solved the extra electricity flowing back.

Loga*****arma

March 8, 2023

★ ★ ★ ★ ★

Excellent safe and secure packing. Fast ship out. Thanks

Kace*****bard

March 5, 2023

★ ★ ★ ★ ★

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

Elis*****aria

February 27, 2023

★ ★ ★ ★ ★

happy with the IC and received with perfect packaging, good comunication with seller thanks.

Beth*****Patla

February 22, 2023

★ ★ ★ ★ ★

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

Write a Review

★★★★★

Not Rated

Thanks for Your Review!

ST-3-120 Packaging

ST-3-120 FAQ

1. How to order ST-3-120 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 ST-3-120 is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the ST-3-120. All suppliers must pass our qualification reviews before they can publish their products including ST-3-120 on Heisener; we pay more attention to the channels and quality of ST-3-120 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the ST-3-120 price and inventory displayed accurate?

The price and inventory of ST-3-120 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 ST-3-120?

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 ST-3-120 we delivered, we will accept the replacement or return of the ST-3-120 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 ST-3-120.

(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 ST-3-120 pin diagram, ST-3-120 datasheet?

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

ST-3-120 Related Products

SIT9001AIL33-33E3-33.00000Y	SiTIME, OSC MEMS 33.0000MHZ LVCMOS SMD, 4-SMD, No Lead, ST	View
1825J2K50821MXR	Knowles Syfer, CAP CER 820PF 2.5KV X7R 1825, 1825 (4564 Metric), ST	View
TPS727285DSER	Texas Instruments, IC REG LINEAR 2.85V 250MA 6WSON, 6-WFDFN, ST	View
CY28339ZXC	Cypress Semiconductor Corp, IC CLK FREQ SYNC CPU 133MHZ, 48-TFSOP (0.240", 6.10mm Width), ST	View
9T12062A88R7CAHFT	Yageo, RES SMD 88.7 OHM 0.25% 1/8W 1206, 1206 (3216 Metric), ST	View
RG2012V-1020-W-T1	Susumu, RES SMD 102 OHM 0.05% 1/8W 0805, 0805 (2012 Metric), ST	View
S0402-68NH3D	API Delevan Inc., FIXED IND 68NH 100MA 1.18 OHM, 0402 (1005 Metric), ST	View
BCS-106-FM-S-DE	Samtec Inc., BOX CONNECTOR SOCKET STRIP, -, ST	View
DW-36-09-F-D-400	Samtec Inc., .025" BOARD SPACERS, -, ST	View
D38999/24ZA35AB	Amphenol Aerospace Operations, CONN RCPT HSNG MALE 6POS PNL MT, -, ST	View
VE-J1X-CX-F2	Vicor Corporation, CONVERTER MINIMOD DC/DC 5.2V 75W, Half Brick, ST	View
MAX8795AETJ+TC7P	Maxim Integrated, INTEGRATED CIRCUIT, -, ST	View

ST-3-120 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

DST-3-120

D# V36:1790_17594320

Signal Transformer Inc

Power Transformer 2500Vrms 2.4VA 8 Terminal PC Pin Thru-Hole

RoHS: Compliant

Part Number

Manufacturer

Description

Stock

ST3120-02

D# ST3120-02

Glenair Inc

- Bulk (Alt: ST3120-02)

ST3120-01

D# ST3120-01

Glenair Inc

- Bulk (Alt: ST3120-01)

Part Number

Manufacturer

Description

Stock

ST-3120-5B-284C

KYCON INC

294

Part Number	Manufacturer	Description	Stock
DST3-120B37	Pulse Electronics Corporation	XFRMR LAMINATED 2.4VA THRU HOLE	0
ST-3-120	Pulse Electronics Corporation	XFRMR LAMINATED 2.4VA THRU HOLE	0
ST3120-02	Glenair Inc	Circular MIL Spec Strain Reliefs & Adapters	126
ST3-120B37	Pulse Electronics Corporation	XFRMR LAMINATED 2.4VA THRU HOLE	0
DST-3-120	Pulse Electronics Corporation	XFRMR LAMINATED 2.4VA THRU HOLE	0
ST3120-01	Glenair Inc	Circular MIL Spec Strain Reliefs & Adapters	42

Part Number	Manufacturer	Description	Stock
DST3-120B37 D# DST3-120B37-ND	Pulse Electronics Corporation	PWR XFMR LAMINATED 2.4VA TH	0
ST3-120B37 D# ST3-120B37-ND	Pulse Electronics Corporation	PWR XFMR LAMINATED 2.4VA TH	0
DST-3-120 D# 595-DST-3-120-ND	Signal Transformer Inc	PWR XFMR LAMINATED 2.4VA TH	0

Part Number	Manufacturer	Description	Stock
ST31203WHT	Kycon Inc	OEM/CM QUOTES ONLY \| NO BROKERS	9520
ST31205B	Kycon Inc	OEM/CM QUOTES ONLY \| NO BROKERS	1592
ST3120B37	PCS	OEM/CM QUOTES ONLY \| NO BROKERS	18
ST31203B284C	Kycon Inc	OEM/CM QUOTES ONLY \| NO BROKERS	585
ST31200NC	SEAGAT	OEM/CM QUOTES ONLY \| NO BROKERS	4
ST3120020A	Seagate Technology	OEM/CM QUOTES ONLY \| NO BROKERS	1
ST3120022A	Seagate Technology	OEM/CM QUOTES ONLY \| NO BROKERS	5
ST31203B701C	Kycon Inc	OEM/CM QUOTES ONLY \| NO BROKERS	298
ST31205BHT	Kycon Inc	OEM/CM QUOTES ONLY \| NO BROKERS	298
ST31203BM	Kycon Inc	OEM/CM QUOTES ONLY \| NO BROKERS	27
ST3120023A	Seagate Technology	OEM/CM QUOTES ONLY \| NO BROKERS	10
ST31203B	Kycon Inc	OEM/CM QUOTES ONLY \| NO BROKERS	1377
ST3120025A	Seagate Technology	OEM/CM QUOTES ONLY \| NO BROKERS	25
ST31203B577C	Kycon Inc	OEM/CM QUOTES ONLY \| NO BROKERS	6
ST3120025ACE	Seagate Technology	OEM/CM QUOTES ONLY \| NO BROKERS	6

Part Number

Manufacturer

Description

Stock

DST-3-120

D# 530-DST-3-120

Belden Inc

Power Transformers 50\60 Hz, Laminated Transformer

RoHS: Compliant

Part Number	Manufacturer	Description	Stock
DST3-120B37 D# NS-DST3-120B37	Pulse Electronics Corporation	OEM/CM ONLY	4984
DST-3-120 D# NS-DST-3-120	Signal Transformer Inc	OEM/CM ONLY	7668
ST-3-120 D# NS-ST-3-120	Signal Transformer Inc	OEM/CM ONLY	7637
PST3120 D# NS-PST3120	VARIOUS	OEM/CM ONLY	1855
ST3-120B37 D# NS-ST3-120B37	Pulse Electronics Corporation	OEM/CM ONLY	1458

Part Number	Manufacturer	Description	Stock
ST-3120-5B-284C	Kycon Inc		235
ST-3120-5B	Kycon Inc	ST-3120-5B	911
ST-3120-3B	Kycon Inc	Electronic Component	18

Part Number	Manufacturer	Description	Stock
ST-3120-3B-284C D# ST-3120-3B-284C	Kycon Inc	Military	62
ST-3120-5B-577C D# ST-3120-5B-577C	Kycon Inc	Military	194
ST-3120-3B-701C D# ST-3120-3B-701C	Kycon Inc	Military	63

Part Number

Manufacturer

Description

Stock

DST-3-120

D# 000000000001083417

Signal Transformer Inc

Power Transformers 50\\60 Hz, Laminated Transformer

ST-3-120

D# 000000000001083647

Signal Transformer Inc

Power Transformers 50\\60 Hz, Laminated Transformer

Part Number	Manufacturer	Description	Stock
ST31203WHT		OEM/CM ONLY	8016
ST31205B		OEM/CM ONLY	4593
ST31205B284C	Kycon Inc	OEM/CM ONLY	817
ST31203BLU	Kycon Inc	OEM/CM ONLY	18016
ST31203B284C	Kycon Inc	OEM/CM ONLY	785
ST31205B701C	Kycon Inc	OEM/CM ONLY	359
ST312005	DRAGON CITY	OEM/CM ONLY	166
ST3120A		OEM/CM ONLY	56
ST31203B701C	Kycon Inc	OEM/CM ONLY	550
ST31205BHT	Kycon Inc	OEM/CM ONLY	316
ST31203B	Kycon Inc	OEM/CM ONLY	2635
ST3120026AS	Seagate Technology	OEM/CM ONLY	1076
ST31205B577C	Sager Electronics	OEM/CM ONLY	464
ST3120	Signal Transformer Inc	OEM/CM ONLY	90

Part Number

Manufacturer

Description

Stock

EST3-120B37

Pulse Electronics Corporation

Pulse Transformers AUDIO SIGNAL TRANSFORMER

Part Number

Manufacturer

Description

Stock

DC3120-XL

D# 850ST3120

Lewis Bins

Conductive Tote Box (I.D.) 20.1inch L x 15.1inch W x 11.9inch H

Quick Inquiry

ST-3-120

Certified Quality

Heisener's commitment to quality has shaped our processes for sourcing, testing, shipping, and every step in between. This foundation underlies each component we sell.

ISO9001:2015, ICAS, IAF, UKAS