PS9151-AX Equivalent & Substitute Parts

Part Overview

The PS9151-AX is a logic output optoisolator manufactured by CEL, designed for high-speed isolation applications requiring 3750Vrms isolation voltage and 15kV/µs common mode transient immunity. This component operates at 15Mbps data rate with push-pull totem pole output configuration in a 5-SO surface mount package.

The PS9151-AX is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this optoisolator topology.

Substiute Parts

PS9151-AX

CELIn Stock: 853PS9151-AX Datasheet

Current PartRFQ

PS9151-F3-AX

Renesas Electronics CorporationIn Stock: 18862PS9151-F3-AX Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PS9151-AX are identified based on strict electrical and mechanical parameter matching within the optoisolator category. The substitution criteria are:

Primary Matching Parameters:

• Isolation voltage: 3750Vrms
• Common mode transient immunity: 15kV/µs minimum
• Output configuration: Push-pull, totem pole
• Data rate: 15Mbps
• Number of channels: 1 channel
• Package: 6-SOIC (5-SO), surface mount
• Supply voltage range: 4.5V to 5.5V
• Operating temperature: -40°C to +100°C

Secondary Matching Parameters:

• Propagation delay specifications (tpLH / tpHL)
• Rise and fall time characteristics
• Forward voltage and current ratings
• RoHS3 compliance status

The PS9151-F3-AX meets all primary and secondary matching parameters and is classified as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The PS9151-F3-AX is a direct electrical and mechanical equivalent to the PS9151-AX. All critical isolation, timing, and electrical parameters are identical. The substitute part is manufactured by Renesas Electronics Corporation and maintains active product status with significantly higher inventory availability (18800 pieces versus 814 pieces for the discontinued PS9151-AX).

Both parts comply with RoHS3, REACH, and EAR99 export control requirements. The PS9151-F3-AX is supplied in Tape & Reel packaging, which is standard for production environments and provides supply chain continuity.

The substitution is valid for all applications currently utilizing the PS9151-AX without circuit modification or re-qualification, provided that the design accommodates the Tape & Reel packaging format or that the component is transferred to alternative packaging as required by assembly processes.

Frequently Asked Questions (FAQ)

Q: Can PS9151-F3-AX be used as a direct replacement for PS9151-AX in existing designs?

A: Yes. The PS9151-F3-AX is electrically and mechanically identical to the PS9151-AX across all specified parameters. No circuit modifications are required. The only difference is the manufacturer (Renesas Electronics Corporation versus CEL) and packaging format (Tape & Reel versus unspecified).

Q: What are the key parameters that define substitution eligibility for this optoisolator?

A: Substitution eligibility is determined by: isolation voltage (3750Vrms), common mode transient immunity (15kV/µs), data rate (15Mbps), output configuration (push-pull totem pole), single-channel topology, propagation delay (60ns max), package type (6-SOIC 5-SO), supply voltage range (4.5V to 5.5V), and operating temperature range (-40°C to +100°C).

Q: Does the Tape & Reel packaging of PS9151-F3-AX affect compatibility?

A: Tape & Reel packaging is a supply format, not a functional characteristic. The component itself is identical. Tape & Reel is standard for automated assembly processes. If manual handling or alternative packaging is required, the component can be transferred to alternative packaging formats by the supplier or assembly facility.

Q: Are there compliance or regulatory differences between PS9151-AX and PS9151-F3-AX?

A: No. Both parts are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS codes (8541.49.8000). Regulatory and compliance status is identical.

Q: Why is PS9151-AX discontinued while PS9151-F3-AX remains active?

A: Product discontinuation decisions are made by manufacturers based on market demand, production efficiency, and portfolio management. The PS9151-F3-AX, manufactured by Renesas Electronics Corporation, remains in active production with higher inventory levels, making it the recommended source for ongoing supply requirements.

Q: What is the base product number relationship between these parts?

A: The PS9151-F3-AX carries the base product number PS9151, which is the same functional family as the PS9151-AX. The "-F3-AX" suffix indicates the specific variant and packaging configuration from Renesas Electronics Corporation.