Vishay Intertechnology Phototransistor Optocouplers Deliver Accuracy and Energy Efficiency for Industrial Applications

Rhea-AI Summary

Vishay Intertechnology (NYSE: VSH) launched the VOx619A series phototransistor optocouplers on February 25, 2026, targeting industrial and low-power applications. The devices offer a 0.5 mA minimum forward current, up to +125 °C operation, linear CTR >75% over temperature, and four package options with up to 5000 VRMS isolation.

Samples and production quantities are available now with eight-week lead times. Devices are RoHS-compliant and halogen-free.

Positive

• Forward current reduced 50% versus previous generation (0.5 mA minimum)
• Extended operating temperature to +125 °C (previous gen to +110 °C)
• Linear CTR >75% across temperature improving signal fidelity
• High isolation up to 5000 VRMS in DIL-4 and LSOP-4 packages

Negative

• Eight-week lead times for samples and production quantities
• Compact SOP/SSOP packages rated lower isolation (3750 VRMS) than DIL/LSOP

News Market Reaction – VSH

+2.55%

2 alerts

+2.55% Session close to close

$2.59B Market Cap

0.0x Rel. Volume

In the Feb 25 session, VSH gained 2.55%, reflecting a moderate positive market reaction. Our momentum scanner triggered 2 alerts that day, indicating moderate trading interest and price volatility.

Data tracked by StockTitan Argus on the day of publication.

Market Context

This announcement adds another incremental product to Vishay’s portfolio, emphasizing efficiency and...

Analysis

This announcement adds another incremental product to Vishay’s portfolio, emphasizing efficiency and high-temperature performance with a 0.5 mA forward current, ≥ 75% CTR over temperature, and isolation up to 5000 VRMS. In the context of recent launches, dividend declarations, and detailed 4Q 2025 results, it reinforces a steady cadence of operational updates. Investors may watch how these optocouplers contribute to industrial and automotive demand alongside metrics already disclosed in recent earnings and regulatory filings.

Key Figures

Forward current: 0.5 mA CTR retention: ≥ 75% Max operating temperature: +125 °C +5 more

8 metrics

Forward current 0.5 mA Min. forward current for VOx619A series

CTR retention ≥ 75% Current transfer ratio over wide temperature range

Max operating temperature +125 °C Upper limit of operating temperature range

Operating temperature range -55 °C to +125 °C Specified device operating range

Isolation voltage 5000 VRMS Max rated isolation for DIL-4 and LSOP-4 packages

Isolation voltage 3750 VRMS Voltage isolation for SOP-4 and SSOP-4 packages

Creepage distance ≥ 7 mm / ≥ 8 mm / ≥ 5 mm Package-dependent creepage and clearance distances

Lead time 8 weeks Samples and production quantities availability

Historical Context

5 past events · Latest: Feb 18 (Positive)

Pattern 5 events

Date	Event	Sentiment	24h Move	Catalyst
Feb 18	Product launch	Positive	+3.8%	Launch of ultra-compact AEC-Q200 thick film chip resistors.
Feb 12	Dividend declaration	Positive	-2.6%	Board declared a $0.10 per share quarterly cash dividend.
Feb 11	Product launch	Positive	+4.3%	Introduction of sulfur-resistant AEC-Q200 standard chip resistors.
Feb 04	Product launch	Positive	-4.2%	New compact commercial and automotive power inductors released.
Feb 04	Earnings report	Neutral	-4.2%	Reported 4Q 2025 results and 1Q 2026 revenue and margin guidance.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Pattern Detected

Recent product news often coincided with positive price reactions, while some other announcements, including a dividend and certain launches, saw negative follow-through, indicating mixed but active trading responses to news.

Recent Company History

Over recent months, Vishay has repeatedly highlighted product innovation and capital returns. Launches of AEC-Q200 qualified resistors and new power inductors showed a focus on automotive and industrial markets, with some of these product updates followed by 3–4% price moves. A quarterly dividend of $0.10 per share and detailed 4Q 2025 results, including $800.9 million revenue and a 19.6% gross margin, framed a backdrop of ongoing shareholder returns and execution. Today’s optocoupler launch continues this stream of incremental product introductions.

Key Terms

phototransistor, ctr, clearance, rohs-compliant, +1 more

5 terms

phototransistor technical

"series of phototransistor optocouplers that combine a high and linear"

A phototransistor is a light-sensitive electronic switch that changes its electrical output when exposed to light, combining a light detector and amplifier in one component. Investors care because it is a key part in devices like optical sensors, remote controls, and machine-vision systems; demand, manufacturing costs, and supply constraints for phototransistors can affect revenue and margins for companies in electronics, automotive, and industrial markets—think of it as the eye and reflex that trigger a gadget’s response to light.

ctr technical

"While CTR can drop to less than 50 % of the specified value"

CTR stands for click‑through rate, the percentage of people who click a specific online link or ad after seeing it. For investors, CTR signals how effectively a company’s digital messages, product pages or marketing turn attention into action—think of it as the share of passersby who walk through a store door after seeing a window display; higher CTRs often mean stronger customer interest and more efficient marketing spend.

clearance technical

"5000 VRMS and creepage and clearance distances of ≥ 7 mm and ≥ 8 mm"

Clearance is official permission from a regulator to market or use a product, often after safety and effectiveness are reviewed. For investors it matters because clearance lowers the legal and commercial barriers to selling the product — like a building permit or driver’s license that lets a business operate openly — which can unlock revenue, reduce uncertainty, and materially affect a company’s valuation and future earnings.

rohs-compliant regulatory

"The optocouplers are RoHS-compliant, halogen-free, and Vishay Green."

RoHS-compliant means a product meets rules that limit or ban certain hazardous chemicals in electrical and electronic equipment, ensuring the item does not contain those restricted substances above set limits. For investors this matters because compliance affects a company's ability to sell in regulated markets, avoid fines and recalls, and manage production costs and supply-chain risks—similar to a food product following a recipe that omits banned ingredients to stay sellable and safe.

v ceo technical

"V CEO | 80 V"

A vice CEO is the deputy to the chief executive who helps run a company, steps in when the CEO is unavailable, and often oversees specific parts of the business like operations, strategy or international units. For investors, the presence and experience of a vice CEO matters because they affect day‑to‑day execution and leadership continuity—much like a trusted co‑pilot who keeps the plane steady if the captain is grounded, reducing disruption and risk to the company’s performance.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Devices Combine High, Linear CTR Range With Low Forward Current of 0.5 mA and High Temperature Operation to +125 °C in Four Package Options

MALVERN, Pa., Feb. 25, 2026 (GLOBE NEWSWIRE) -- Vishay Intertechnology, Inc. (NYSE: VSH) today introduced a new series of phototransistor optocouplers that combine a high and linear current transfer ratio (CTR) over temperature with a low forward current of 0.5 mA. Offering high temperature operation up to +125 °C in a choice of four packages — the DIL-4; long creepage LSOP-4; compact SOP-4; and half-pitch SSOP-4 — the Vishay Semiconductors VOx619A series is designed to deliver accuracy and energy efficiency in industrial applications.

Offering 50 % lower forward current than the previous-generation solution, the optocouplers released today reduce power consumption for more energy-efficient designs in micro mobility, industrial, energy metering, telecom, and consumer applications, in which they are optimized for signal transmission with galvanic and noise isolation in DC/DC converters, programmable controllers, and power supplies. They can also be used with devices that have limited current-driving capabilities, such as microcontrollers.

While CTR can drop to less than 50 % of the specified value at 25 °C for traditional optocouplers, it remains at > 75 % for the VOx619A series over its wide temperature range. This linear behavior ensures that signals are transmitted with high fidelity, which is crucial for applications requiring precise data handling. And while previous-generation solutions offered temperature ranges up to +110 °C — and traditional couplers are often only qualified to +85 °C — the extended temperature range of the VOx619A series guarantees reliable performance in extreme conditions.

VOx619A series devices feature an infrared emitting diode that is optically coupled to a phototransistor detector. Optocouplers in the DIL-4 and LSOP-4 packages offer a high maximum rated isolation voltage of 5000 VRMS and creepage and clearance distances of ≥ 7 mm and ≥ 8 mm, respectively. Devices in the SOP-4 and SSOP-4 provide more compact options to save board space, while offering voltage isolation of 3750 VRMS and creepage and clearance distances of ≥ 5 mm. The optocouplers are RoHS-compliant, halogen-free, and Vishay Green.

Device Specification Table:

Part #	VO619A		VOL619A	VOM619A	VOS619A
Package	DIL-4		LSOP-4	SOP-4	SSOP-4
Creepage distance	≥ 7 mm	≥ 8 mm		≥ 5 mm
VISO	5000 VRMS			3750 VRMS
Min. forward current	0.5 mA
VCEO	80 V
Operating temp.	-55 °C to +125 °C

Samples and production quantities of the VOx619A series are available now, with lead times of eight weeks.

Vishay manufactures one of the world’s largest portfolios of discrete semiconductors and passive electronic components that are essential to innovative designs in the automotive, industrial, computing, consumer, telecommunications, military, aerospace, and medical markets. Serving customers worldwide, Vishay is The DNA of tech.^® Vishay Intertechnology, Inc. is a Fortune 1000 Company listed on the NYSE (VSH). More on Vishay at www.Vishay.com.

The DNA of tech^® is a registered trademark of Vishay Intertechnology, Inc.

Vishay on Facebook: http://www.facebook.com/VishayIntertechnology
Vishay Twitter feed: http://twitter.com/vishayindust

Links to product datasheets:
http://www.vishay.com/ppg?80521 (VOL619A)
http://www.vishay.com/ppg?80522 (VO619A)
http://www.vishay.com/ppg?80523 (VOM619A)
http://www.vishay.com/ppg?80524 (VOS619A)

Link to product photo:
https://www.flickr.com/photos/vishay/albums/72177720332070187

For more information please contact:
Vishay Intertechnology
Peter Henrici, +1 408 567-8400
peter.henrici@vishay.com
or
Redpines
Bob Decker, +1 415 409-0233
bob.decker@redpinesgroup.com

FAQ

What are the key electrical specs of Vishay VOx619A optocouplers (VSH) announced Feb 25, 2026?

The VOx619A series features a 0.5 mA minimum forward current, VCEO 80 V, and operation to +125 °C. According to the company, package-specific isolation is up to 5000 VRMS with creepage/clearance distances listed in the datasheet.

How does the VOx619A series (VSH) improve power efficiency compared with prior optocouplers?

VOx619A devices require 50% lower forward current than the previous generation, reducing power use in driven circuits. According to the company, the 0.5 mA minimum forward current enables more energy-efficient signal isolation in low-power designs.

Which packages and isolation levels are available for VOx619A optocouplers (VSH)?

The series offers four packages: DIL-4, LSOP-4, SOP-4, and SSOP-4 with isolation up to 5000 VRMS in DIL/LSOP. According to the company, SOP/SSOP provide compact options with 3750 VRMS isolation for space-constrained boards.

Are VOx619A optocouplers from Vishay (VSH) suitable for high-temperature industrial use?

Yes. The VOx619A series is rated from -55 °C to +125 °C, extending beyond many traditional couplers. According to the company, this supports reliable operation in harsher industrial and power-electronics environments.

How does CTR performance of VOx619A (VSH) compare over temperature versus traditional optocouplers?

VOx619A maintains CTR at >75% over its temperature range, compared to traditional optocouplers that can drop below 50%. According to the company, the linear CTR preserves signal fidelity across wide operating temperatures.

When will samples and production quantities of VOx619A (VSH) be available to customers?

Samples and production quantities are available now, with lead times of eight weeks. According to the company, customers can request parts and access datasheets and photos via the product links provided.