PAA132STR Equivalent & Substitute Parts

Part Overview

The PAA132STR is a solid-state relay (SSR) manufactured by IXYS Integrated Circuits Division, operating as a SPST-NO (Single Pole Single Throw - Normally Open) configuration with dual channels in an 8-SMD surface mount package. This OptoMOS® series component handles 600 mA load current across 0–60 V DC/AC output voltage with 1.2 VDC input control voltage and 1 Ohm maximum on-state resistance. The part is Active status, RoHS3 compliant, and carries unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified when they maintain compatible electrical and mechanical specifications within the allowed parameter ranges for this product category.

Key Parameters

Parameter	Value
Manufacturer Part Number	PAA132STR
Manufacturer	IXYS Integrated Circuits Division
Series	PAA, OptoMOS®
Circuit Configuration	SPST-NO (1 Form A) x 2
Output Type	AC, DC
Voltage - Input	1.2 VDC
Voltage - Load	0 V ~ 60 V
Load Current	600 mA
On-State Resistance (Max)	1 Ohm
Package / Case	8-SMD (0.300", 7.62mm)
Termination Style	Gull Wing
Mounting Type	Surface Mount
RoHS Status	RoHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution of the PAA132STR is determined by strict compatibility across the following electrical and mechanical parameters:

Critical Compatibility Parameters:

Circuit configuration: SPST-NO (1 Form A) x 2 dual-channel topology
Package / Case: 8-SMD (0.300", 7.62mm) with Gull Wing termination
Output voltage range: 0 V ~ 60 V (DC/AC capable)
Mounting type: Surface Mount
Load current capability: minimum 600 mA required for direct substitution
On-state resistance: maximum 1 Ohm for equivalent performance
Input control voltage: compatible with 1.2–1.3 VDC range
Compliance: RoHS3 and REACH Unaffected status maintained

Substitute parts from Broadcom Limited (ASSR series) are grouped by load current rating. Parts with 600 mA or higher current capacity and matching on-state resistance specifications are direct equivalents. Parts with lower current ratings (200 mA) are functional substitutes only where load current requirements do not exceed their rated capacity.

Parameter Comparison

Parameter	PAA132STR	ASSR-1228-302E	ASSR-1228-502E	ASSR-1420-302E	ASSR-1520-302E	ASSR-1520-502E
Manufacturer	IXYS	Broadcom	Broadcom	Broadcom	Broadcom	Broadcom
Circuit Configuration	SPST-NO (1 Form A) x 2	SPST-NO (1 Form A) x 2	SPST-NO (1 Form A) x 2	SPST-NO (1 Form A) x 2	SPST-NO (1 Form A) x 2	SPST-NO (1 Form A) x 2
Output Type	AC, DC	AC, DC	AC, DC	AC, DC	AC, DC	AC, DC
Voltage - Input	1.2 VDC	1.3 VDC	1.3 VDC	1.3 VDC	1.3 VDC	1.3 VDC
Voltage - Load	0 V ~ 60 V	0 V ~ 60 V	0 V ~ 60 V	0 V ~ 60 V	0 V ~ 60 V	0 V ~ 60 V
Load Current	600 mA	200 mA	200 mA	600 mA	1 A	1 A
On-State Resistance (Max)	1 Ohm	10 Ohms	10 Ohms	1 Ohm	500 mOhms	500 mOhms
Package / Case	8-SMD (0.300", 7.62mm)	8-SMD (0.300", 7.62mm)	8-SMD (0.300", 7.62mm)	8-SMD (0.300", 7.62mm)	8-SMD (0.300", 7.62mm)	8-SMD (0.300", 7.62mm)
Termination Style	Gull Wing	Gull Wing	Gull Wing	Gull Wing	Gull Wing	Gull Wing
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active
Packaging	Tape & Reel (TR)	Tube	Cut Tape (CT) & Digi-Reel®	Tube	Tube	Tape & Reel (TR)

Engineering Selection Recommendations

Direct Equivalents (600 mA Load Current, 1 Ohm On-State Resistance):

ASSR-1420-302E and ASSR-1420 base series provide electrical equivalence to PAA132STR with identical 600 mA load current and 1 Ohm maximum on-state resistance. Both maintain 0–60 V load voltage range, dual SPST-NO configuration, and 8-SMD Gull Wing package. Input voltage rises to 1.3 VDC (from 1.2 VDC), which remains within acceptable control circuit tolerances. RoHS3 compliance and Active product status are maintained. Packaging differs (Tube vs. Tape & Reel); select based on procurement and assembly requirements.

Higher Performance Alternatives (1 A Load Current, 500 mOhms On-State Resistance):

ASSR-1520-302E and ASSR-1520-502E provide enhanced current handling at 1 A with reduced on-state resistance (500 mOhms). These parts exceed PAA132STR specifications and are suitable for applications requiring lower power dissipation or higher current margins. Electrical compatibility, package geometry, and compliance certifications remain identical. ASSR-1520-502E matches original Tape & Reel packaging; ASSR-1520-302E uses Tube packaging.

Reduced Current Alternatives (200 mA Load Current, 10 Ohms On-State Resistance):

ASSR-1228-302E and ASSR-1228-502E are functional substitutes only where application load current does not exceed 200 mA. On-state resistance increases to 10 Ohms, resulting in higher power dissipation. These parts are not suitable for 600 mA load applications. Use only when load current requirements are confirmed below 200 mA and higher on-state resistance is acceptable.

Frequently Asked Questions (FAQ)

Q: Can ASSR-1228 series parts replace PAA132STR in all applications?

A: No. ASSR-1228-302E and ASSR-1228-502E are rated for 200 mA maximum load current, while PAA132STR is rated for 600 mA. These parts are functional substitutes only for applications with load current below 200 mA. Exceeding this rating will cause component failure.

Q: What is the difference between ASSR-1520-302E and ASSR-1520-502E?

A: Both parts are electrically identical with 1 A load current and 500 mOhms on-state resistance. The difference is packaging: ASSR-1520-302E is supplied in Tube format, while ASSR-1520-502E is supplied in Tape & Reel (TR) format. Select based on assembly line requirements and procurement preferences.

Q: Is the input voltage difference between PAA132STR (1.2 VDC) and ASSR series (1.3 VDC) significant?

A: The 0.1 VDC difference is within standard control circuit tolerances and does not affect substitution compatibility. Both voltage levels are compatible with typical 3.3 V and 5 V logic control signals used in industrial and consumer applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. PAA132STR and all listed substitute parts (ASSR-1228-302E, ASSR-1228-502E, ASSR-1420-302E, ASSR-1520-302E, ASSR-1520-502E) are RoHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements.

Q: Can I use ASSR-1420-302E as a direct replacement for PAA132STR?

A: Yes. ASSR-1420-302E is a direct electrical equivalent with matching 600 mA load current, 1 Ohm on-state resistance, and identical package specifications. The only difference is packaging format (Tube vs. Tape & Reel) and input voltage (1.3 VDC vs. 1.2 VDC), both of which are compatible with standard circuit designs.

Q: What is the advantage of using ASSR-1520 series over PAA132STR?

A: ASSR-1520 series provides higher current capacity (1 A vs. 600 mA) and significantly lower on-state resistance (500 mOhms vs. 1 Ohm). This results in reduced power dissipation and thermal stress, extending component life in high-current or thermally constrained applications. Use when application requirements exceed 600 mA or when minimizing heat generation is critical.

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