XBB170 Equivalent & Substitute Parts

Part Overview

The XBB170 is a solid-state relay (SSR) manufactured by IXYS Integrated Circuits Division, part of the OptoMOS® series. This SPST-NC (1 Form B) x 2 configuration operates as a through-hole component in an 8-DIP package. The device is rated for 100 mA load current across 0–350 V AC/DC applications with a 1.2 VDC input trigger voltage. The XBB170 maintains active product status and carries ROHS3 compliance. Equivalent parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable.

Substiute Parts

XBB170

IXYS Integrated Circuits DivisionIn Stock: 2864XBB170 Datasheet

Current PartRFQ

AQW414EH

Panasonic Electric WorksIn Stock: 1452AQW414EH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the XBB170 is determined by strict alignment of the following parameters:

• Circuit configuration: SPST-NC (1 Form B) x 2
• Package type: 8-DIP (0.300", 7.62mm)
• Mounting method: Through Hole
• Load current rating: 100 mA
• Output type: AC, DC capable
• Input voltage: Compatible trigger voltage (1.2 VDC reference)
• Load voltage range: Minimum 350 V support
• On-state resistance: Electrical performance within acceptable range
• Compliance: ROHS3 and REACH standards

The AQW414EH from Panasonic Electric Works meets all substitution criteria. Both devices share identical circuit topology, package footprint, and load current specifications. The AQW414EH operates at a slightly lower input voltage (1.14 VDC versus 1.2 VDC) and supports a higher load voltage ceiling (400 V versus 350 V), with improved on-state resistance (35 Ohms versus 50 Ohms). These differences represent enhanced electrical performance within the same functional class.

Parameter Comparison

Engineering Selection Recommendations

Both the XBB170 and AQW414EH are active products with current manufacturing status and full regulatory compliance (ROHS3, REACH Unaffected). Selection between these parts depends on application-specific requirements:

The XBB170 is the primary choice when design specifications explicitly reference the IXYS OptoMOS® series or when existing inventory and supply chain relationships favor IXYS sourcing.

The AQW414EH serves as a direct substitute when enhanced electrical performance is beneficial or when Panasonic supply availability is preferred. The lower input trigger voltage and reduced on-state resistance provide operational margin in applications with marginal input signal levels or where heat dissipation is a design consideration.

Both devices maintain identical footprint compatibility and circuit topology, enabling direct PCB substitution without layout modification.

Frequently Asked Questions (FAQ)

Q: Can the AQW414EH replace the XBB170 in existing designs without PCB changes?

A: Yes. Both devices use the 8-DIP (0.300", 7.62mm) package with identical pin assignments for SPST-NC (1 Form B) x 2 configuration. Direct socket substitution is possible without PCB redesign.

Q: What is the significance of the input voltage difference (1.2 VDC vs. 1.14 VDC)?

A: The AQW414EH requires slightly lower input voltage to trigger. In applications with marginal input signal levels, the AQW414EH may provide more reliable operation. Both values fall within standard logic-level signaling ranges.

Q: Does the higher load voltage rating of the AQW414EH (400 V vs. 350 V) affect compatibility?

A: No. The AQW414EH's 400 V rating is a superset of the XBB170's 350 V specification. Applications designed for 350 V operation remain fully compatible with the AQW414EH.

Q: What does the lower on-state resistance of the AQW414EH (35 Ohms vs. 50 Ohms) mean for circuit performance?

A: Lower on-state resistance reduces voltage drop across the relay contacts during load current conduction, resulting in lower heat dissipation and improved efficiency. This is a performance advantage with no negative impact on compatibility.

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

A: Yes. Both the XBB170 and AQW414EH support AC and DC output types across their respective voltage and current ratings.

Q: What compliance certifications apply to both parts?

A: Both devices are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.