F18107SD1600 Equivalent & Substitute Parts

Part Overview

The F18107SD1600 is an SCR module manufactured by Sensata-Crydom, designed for high-voltage thyristor applications requiring 1.6 kV off-state voltage capability. This module features series-connected SCRs in a chassis-mount configuration, rated for 105 A at 600 VAC operation. The product is classified as "Not For New Designs," indicating it has reached end-of-life status. Organizations currently using this component in active systems require qualified substitute parts to maintain operational continuity and ensure supply chain reliability.

Substiute Parts

F18107SD1600

Sensata-CrydomIn Stock: 1279F18107SD1600 Datasheet

Current PartRFQ

CD431690B

Powerex Inc.In Stock: 1055CD431690B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the F18107SD1600 is determined by the following critical parameters:

• Voltage - Off State: Must equal 1.6 kV to maintain circuit voltage isolation requirements
• Structure: Must be Series Connection - All SCRs to preserve gate drive and current distribution characteristics
• Number of SCRs: Must equal 2 to match functional topology
• Mounting Type: Must be Chassis Mount for mechanical compatibility
• Gate Trigger Parameters (Vgt, Igt): Must match or be lower to ensure gate drive circuit compatibility
• Operating Temperature Range: Must encompass -40°C ~ 125°C minimum
• RoHS Compliance: Must meet or exceed existing compliance status

The CD431690B from Powerex Inc. satisfies all substitution criteria within these parameters.

Parameter Comparison

Engineering Selection Recommendations

The CD431690B qualifies as a direct substitute for the F18107SD1600 based on electrical and mechanical parameter alignment. Both components maintain identical off-state voltage (1.6 kV), gate trigger specifications (Vgt 3 V, Igt 150 mA), operating temperature range (-40°C ~ 125°C), and series-connected dual-SCR topology. The CD431690B carries Active product status, ensuring continued availability and manufacturing support, whereas the F18107SD1600 is designated Not For New Designs. The CD431690B achieves ROHS3 compliance, exceeding the RoHS compliance level of the original part. The non-repetitive surge current rating of the CD431690B (2000 A, 2100 A) is lower than the F18107SD1600 (2250 A @ 60Hz); applications requiring surge current margins above 2100 A require detailed circuit analysis to confirm acceptability.

Frequently Asked Questions (FAQ)

Q: Can the CD431690B directly replace the F18107SD1600 in existing applications?

A: Yes, provided the application's non-repetitive surge current requirement does not exceed 2100 A. The CD431690B matches all critical electrical parameters including off-state voltage, gate trigger specifications, and operating temperature range. Mechanical compatibility is confirmed through identical chassis-mount configuration and module form factor.

Q: What is the primary difference between these two parts?

A: The CD431690B has a lower non-repetitive surge current rating (2000 A, 2100 A) compared to the F18107SD1600 (2250 A @ 60Hz). The CD431690B also offers superior product status (Active vs. Not For New Designs) and higher RoHS compliance level (ROHS3).

Q: Are there any gate drive circuit modifications required when substituting to CD431690B?

A: No. Both parts specify identical gate trigger voltage (3 V maximum) and gate trigger current (150 mA maximum), ensuring gate drive circuits designed for the F18107SD1600 operate without modification.

Q: How do the package configurations compare?

A: Both parts are chassis-mount modules. The F18107SD1600 uses a standard Module package, while the CD431690B uses Powerex's POW-R-BLOK™ Module form factor. Both are compatible with standard chassis-mount mechanical interfaces.

Q: What compliance certifications apply to the CD431690B?

A: The CD431690B is ROHS3 compliant and carries EAR99 export classification with HTSUS code 8541.30.0080, matching the regulatory framework of the original F18107SD1600.