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lh1540at — DIP-24/28/40 package (representative)
DIP-24/28/40
Representative of package type
Siemens

lh1540at

Solid State Relay · DIP-6 · Optoelectronics
Part Status: Obsolete
Data last refreshed Jun 19, 2026
Manufacturer
Siemens
Mfr Part #
lh1540at
Series
LH1540
Category
Solid State Relay
Datasheet
View datasheet ↗
Availability & Pricing
ZDI Price$1.25
Last transacted1999-11-08
Market range$1.25
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Product Attributes

Electrical & Parametric
Output Voltage350 V
Load Current120 mA
On Resistance35 Ω
Isolation Voltage3750 Vrms
Physical & Thermal
Package / CaseDIP-6
Mounting TypeThrough Hole
SeriesLH1540
Operating Temperature-40°C ~ 85°C
Classification & Lifecycle
CategorySolid State Relay
TypeOptoelectronics
Part StatusObsolete

1-Form-A SSR, MOSFET output, 350 V, 120 mA, 8 pF, DIP-6

Price History & Market Reference

Market Price Range

High$1.25
Low$1.25
Last$1.25
Price as of1999-11-08

ZDI Transaction

Last ZDI price$1.25
As of1999-11-08

Pricing reflects ZDI's transaction and market-reference data. Firm pricing confirmed per RFQ against current availability.

Part Activity

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Recent search and sourcing activity for lh1540at.

Engineering FAQ

lh1540at is marked Obsolete — how does ZDI assure authenticity?
Obsolete and end-of-life parts carry elevated counterfeit risk, which is exactly why ZDI routes every lot through the full EQuality Process™ — validation, QI-1 and QI-2/camera inspection, RoHS verification, bake and bag-and-tag, and QI-3 final inspection — with source-country supplier vetting and full lot traceability before release.
What are the key specifications of lh1540at?
Output Voltage: 350 V; Load Current: 120 mA; On Resistance: 35 Ω; Isolation Voltage: 3750 Vrms.
What package is lh1540at supplied in?
lh1540at is supplied in the DIP-6 package, through hole, rated -40°C ~ 85°C.
Can ZDI source lh1540at beyond the quantities shown?
Yes — ZD Integrated Circuits specializes in sourcing hard-to-find, obsolete, and excess electronic components through its global network, with counterfeit-avoidance inspection on every lot. Submit an RFQ with your target quantity for availability and pricing.

Documents & Media

Quality & Counterfeit Avoidance

ISO 9001 ERAI Member ESD Certified GIDEP Participant ZDI EQuality Process CAGE Code 1V8K2

ZD Integrated Circuits operates an ISO 9001-certified quality system incorporating JEDEC-standard process-control elements. In an era of global sourcing and internet procurement, standards compliance alone no longer assures component authenticity — so ZDI pioneered a multi-layered counterfeit-avoidance program: supplier analysis at the source-country level, detailed component analysis, defined inspection standards for all incoming devices, and stringent supplier rating and review. These programs let ZDI guarantee the integrity and the source of every component it ships.

Every lot moves through ZDI's EQuality Process™ — validation, QI-1 and QI-2/camera inspection, RoHS verification, bake and bag-and-tag, and QI-3 final inspection — with Quality-Manager disposition before release. Nonconforming material is quarantined; conforming material is warehoused or shipped.

✓Multi-stage EQuality Process™ inspection (QI-1 · QI-2/camera · QI-3)
✓Source-country supplier analysis, rating & review
✓Incoming inspection, RoHS verification, bake, full lot traceability
✓ESD-controlled handling · authentic parts guaranteed

lh1540at is marked Obsolete. Obsolete and end-of-life parts carry elevated counterfeit risk — exactly why ZDI routes them through the full EQuality Process™ with source-country supplier vetting, inspection, and traceability.

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