PSK-5W-9 Equivalent & Substitute Parts Reference

Part Overview

The PSK-5W-9 from CUI Inc. is an enclosed AC/DC converter providing a single 9V output at up to 550mA and 5W power, suitable for ITE (Commercial) applications. With a wide input voltage range (85~305 VAC, 100~430 VDC) and approvals for CE and cURus, it is designed for through-hole mounting in a 4-DIP module form factor. The product status for PSK-5W-9 is listed as Obsolete. Substitution is necessary to ensure continued design support where replacement or drop-in alternatives are required, maintaining electrical, mechanical, and compliance equivalence.

Substiute Parts

PSK-5W-9

CUI Inc.In Stock: 875PSK-5W-9 Datasheet

Current PartRFQ

PSK-5D-9

CUI Inc.In Stock: 883PSK-5D-9 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PSK-5W-9 are defined strictly by matching the following allowed electrical and mechanical parameters: input voltage range, output voltage, output current, output power, number of outputs, mounting type, package style, operating temperature, efficiency, and regulatory approvals. Substitutes are identified only where all listed parameters are available and match the required values for the original part.

Parameter Comparison

Engineering Selection Recommendations

The PSK-5W-9 is obsolete; selection of substitute parts must be based on equivalent electrical performance, package compatibility, and regulatory compliance. The manufacturer-recommended substitute PSK-5D-9 maintains the specified output voltage, output current, power rating, input voltage range, single output, through-hole mounting, and approval agency certifications. Both parts comply with RoHS requirements. The operating temperature range of the substitute is extended. The package form differs; dimensional and lead configurations must be verified for mechanical compatibility within the intended design.

Frequently Asked Questions (FAQ)

Q1: Which parameters are critical for substituting PSK-5W-9?
Electrical compatibility (input voltage, output voltage, output current, output power), mounting type, number of outputs, mechanical envelope, and regulatory approvals are the primary substitution criteria.

Q2: Is the substitute PSK-5D-9 electrically compatible with PSK-5W-9?
Yes. PSK-5D-9 shares the same input range, output voltage, output power, current output capability, and regulatory approvals.

Q3: Are there mechanical differences between PSK-5W-9 and PSK-5D-9?
Yes. The PSK-5W-9 uses a 4-DIP module, while PSK-5D-9 uses a 5-DIP module with 4 leads. Dimensions vary; review package dimensions and layout for fit.

Q4: Does the substitute maintain environmental and safety certifications?
Both models hold CE and cURus approvals and are RoHS compliant.

Q5: Does the substitute offer any difference in operating temperature or efficiency?
PSK-5D-9 provides a wider operating temperature range (-40°C ~ 85°C) and higher efficiency (80.5%) compared to PSK-5W-9.

Q6: Is it necessary to validate package fit and pinout before implementing the substitute?
Yes. Mechanical and pin compatibility must be verified based on module dimensions and lead configuration. Only provided package details should be referenced.