PAA140PL Equivalent & Substitute Parts

Part Overview

The PAA140PL is a solid-state relay (SSR) manufactured by IXYS Integrated Circuits Division, part of the PAA series OptoMOS® product line. This component functions as a SPST-NO (Single Pole Single Throw - Normally Open) relay with dual channels, rated for 200 mA load current at 0–400 V AC/DC output. The PAA140PL is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

PAA140PL

IXYS Integrated Circuits DivisionIn Stock: 2073PAA140PL Datasheet

Current PartRFQ

PAA140STR

IXYS Integrated Circuits DivisionIn Stock: 1452PAA140STR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PAA140PL is determined by the following critical parameters:

• Circuit Configuration: Must maintain SPST-NO (1 Form A) x 2 dual-channel topology
• Package / Case: Must be 8-SMD (0.300", 7.62mm) for PCB compatibility
• Mounting Type: Must be Surface Mount
• Voltage Rating: Load voltage range must encompass 0 V ~ 400 V
• Input Voltage: Must operate at 1.2 VDC control signal
• Output Type: Must support both AC and DC switching
• Load Current Capability: Substitute must meet or exceed 200 mA rating

The PAA140STR meets all substitution criteria as an active product within the same PAA OptoMOS® series, maintaining identical electrical specifications and physical form factor while offering enhanced performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The PAA140STR is the direct substitute for the obsolete PAA140PL. Both components share identical electrical specifications, circuit topology, and physical packaging. The PAA140STR is manufactured by the same supplier (IXYS Integrated Circuits Division) and maintains full compatibility with existing PCB designs.

The PAA140STR offers two performance improvements over the PAA140PL:

• Load Current: 250 mA rating versus 200 mA, providing 25% additional capacity margin
• On-State Resistance: 8 Ohms maximum versus 13 Ohms, resulting in lower power dissipation and improved thermal performance

The PAA140STR carries ROHS3 compliance certification, meeting current regulatory requirements for new product designs and manufacturing. As an active product in the PAA OptoMOS® series, the PAA140STR is available through standard distribution channels with established supply continuity.

Frequently Asked Questions (FAQ)

Q: Can the PAA140STR be used as a direct replacement for the PAA140PL in existing designs?

A: Yes. The PAA140STR is a direct pin-for-pin and functional equivalent. Both components use identical 8-SMD (0.300", 7.62mm) packaging with gull wing termination, operate at 1.2 VDC input, and switch 0–400 V AC/DC loads. No PCB modifications are required.

Q: What are the key differences between PAA140PL and PAA140STR?

A: The PAA140STR provides enhanced performance with 250 mA load current capacity (versus 200 mA) and lower on-state resistance of 8 Ohms (versus 13 Ohms). The PAA140STR is an active product with ROHS3 compliance, while the PAA140PL is obsolete.

Q: Are there any compatibility concerns with the increased load current rating of the PAA140STR?

A: No. The PAA140STR's higher current rating (250 mA) is fully backward compatible with applications designed for 200 mA operation. The lower on-state resistance (8 Ohms) reduces power dissipation, improving thermal performance in the same package.

Q: What is the moisture sensitivity level for both parts?

A: Both the PAA140PL and PAA140STR have MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.

Q: Are both parts suitable for AC and DC load switching?

A: Yes. Both the PAA140PL and PAA140STR support AC and DC output switching across the 0–400 V load voltage range.

Q: What is the input control voltage requirement?

A: Both components require 1.2 VDC input signal for relay activation.