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LH1526AB
Vishay Semiconductor Opto Division
SSR RELAY SPST-NO 100MA 0-400V
20362 Pcs New Original In Stock
Solid State SPST-NO (1 Form A) x 2 8-DIP (0.300", 7.62mm)
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5.0 / 5.0
- (412 Ratings)
LH1526AB
Product Overview
1174521
DiGi Electronics Part Number
LH1526AB-DGManufacturer
Vishay Semiconductor Opto Division
LH1526AB
Description
SSR RELAY SPST-NO 100MA 0-400VInventory
20362 Pcs New Original In Stock
Solid State SPST-NO (1 Form A) x 2 8-DIP (0.300", 7.62mm)
Quantity
Minimum 1
Minimum 1
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LH1526AB Technical Specifications
Category
Solid State Relays
Packaging
Tube
Series
LH1526
Product Status
Active
Mounting Type
Through Hole
Circuit
SPST-NO (1 Form A) x 2
Output Type
AC, DC
Voltage - Input
1.15VDC
Voltage - Load
0 V ~ 400 V
Load Current
100 mA
On-State Resistance (Max)
25 Ohms
Termination Style
PC Pin
Package / Case
8-DIP (0.300", 7.62mm)
Supplier Device Package
8-DIP
Base Product Number
LH1526
Datasheet & Documents
HTML Datasheet
LH1526AB-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8536.41.0030
Additional Information
Other Names
LH1526AB-DG
751-LH1526AB
Standard Package
50
Alternative Parts
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
価格とサポートの両面で非常に満足しており、リピート確定です。
Dec 02, 2025
Efficient logistics means less waiting and more enjoying my new gadgets.
Dec 02, 2025
I appreciate their efficiency; DiGi Electronics ships out orders promptly, which is crucial for my repair business.
Dec 02, 2025
The customer service at DiGi Electronics is truly exceptional, always professional and attentive to my needs.
Dec 02, 2025
DiGi Electronics offers impeccable packaging quality that truly protects their products during transit, ensuring they arrive in pristine condition every time.
Dec 02, 2025
Their pricing policies make it easy for me to stay connected with the latest technology.
Dec 02, 2025
Reliable shipping and a supportive customer service team make shopping here a pleasure.
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Frequently Asked Questions (FAQ)
Can the LH1526AB be used to switch inductive loads like relays or small motors without risking premature failure due to voltage transients?
The LH1526AB is rated for 0–400 V load voltage and 100 mA continuous current, but it lacks built-in transient suppression. When switching inductive loads such as relays or motors, voltage spikes can exceed the 400 V rating and damage the internal MOSFETs. To safely use the LH1526AB in such applications, add an external snubber circuit (e.g., RC network) or a bidirectional TVS diode across the output terminals. Without protection, repeated inductive kickback may cause latent or catastrophic failure, especially near the 400 V limit.
Is the LH1526AB a drop-in replacement for the Panasonic AQH1213 in a 2-channel low-side switching application with 24 VDC loads?
While both the LH1526AB and AQH1213 are dual-channel, SPST-NO solid-state relays in 8-DIP packages, they are not direct drop-in replacements due to key differences. The AQH1213 has a higher on-state current (300 mA vs. 100 mA) and lower typical on-resistance (~5 Ω vs. 25 Ω), making it better suited for higher-power 24 VDC loads. Using the LH1526AB in place of the AQH1213 risks overheating and thermal runaway if the load current exceeds ~80 mA continuously. Verify your actual load current and consider derating; if above 70 mA, select a higher-current SSR like the AQH1213 or IXYS CPC1017N.
What are the thermal management implications of using both channels of the LH1526AB simultaneously at 100 mA with a 400 VDC load?
Operating both channels of the LH1526AB at full 100 mA load current generates significant heat due to its 25 Ω on-state resistance per channel—approximately 0.5 W total (2 × I²R = 2 × 0.1² × 25). In an 8-DIP through-hole package without a heatsink, this can cause junction temperatures to exceed safe limits, especially in enclosed or high-ambient environments. Monitor PCB copper area under the device; increasing thermal pad size or adding vias can improve heat dissipation. For continuous dual-channel operation near max ratings, consider a lower-Ron alternative like the Toshiba TLP3543A or derate the current to ≤70 mA per channel.
How does the input drive requirement of the LH1526AB (1.15 VDC forward voltage) affect compatibility with 3.3 V microcontroller GPIO pins, and what resistor value should be used?
The LH1526AB’s input LED requires approximately 1.15 V forward voltage and is typically driven at 5–15 mA for reliable turn-on. When interfacing with a 3.3 V microcontroller GPIO, use a series current-limiting resistor to avoid overdriving the LED. For a target input current of 10 mA: R = (3.3 V – 1.15 V) / 0.01 A = 215 Ω → use a standard 220 Ω, 1/8 W resistor. Avoid driving directly without a resistor, as GPIO pins may source excessive current, degrading the LED over time. Also ensure the MCU can sink/source the required current; most modern MCUs can handle 10 mA per pin, but verify against your specific microcontroller’s datasheet.
What long-term reliability risks should be considered when deploying the LH1526AB in industrial environments with high humidity and temperature cycling?
Although the LH1526AB is RoHS3 compliant and has an MSL 1 (unlimited floor life) rating, long-term reliability in harsh industrial settings depends on PCB design and conformal coating. The 8-DIP package is more susceptible to moisture ingress and mechanical stress than surface-mount alternatives. In high-humidity environments, ensure proper solder mask coverage and consider applying silicone or acrylic conformal coating to prevent dendritic growth. Additionally, thermal cycling can fatigue through-hole leads; secure the package with strain relief or potting if vibration is present. For mission-critical applications, monitor for increased on-resistance over time, which may indicate contact degradation—perform periodic functional tests or select a hermetically sealed opto-relay like the Crydom CMX60D10 for extreme conditions.
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LH1526AB CAD Models
Vishay Semiconductor Opto Division LH1526AB PCB symbols & footprints
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