SMM-125-01-SM-D Equivalent & Substitute Parts

Part Overview

The SMM-125-01-SM-D is a 50-position receptacle connector from Samtec Inc.'s Tiger Eye™ SMM series, designed for board-to-board or cable applications. This connector features a 0.079" (2.00mm) pitch with through-hole solder termination and gold-plated mating contacts. The part is currently active in production with 736 units in stock. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when specific packaging or compliance requirements necessitate component alternatives.

Substiute Parts

SMM-125-01-SM-D

Samtec Inc.In Stock: 844SMM-125-01-SM-D Datasheet

Current PartRFQ

SMM-125-01-S-D

Samtec Inc.In Stock: 994SMM-125-01-S-D Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The SMM-125-01-S-D qualifies as a direct substitute for the SMM-125-01-SM-D based on the following critical parameters:

• Connector Type & Configuration: Both are 50-position receptacle connectors with identical pitch (0.079" / 2.00mm) and row spacing
• Electrical Specifications: Matching current rating (3.2A per contact) and voltage rating (350VAC)
• Physical Mounting: Both utilize through-hole solder termination with identical contact geometry and insulation dimensions
• Contact Materials & Finish: Identical gold-plated mating contacts (30.0µin thickness) and beryllium copper contact material
• Environmental Ratings: Both operate across -55°C to 125°C temperature range with UL94 V-0 flammability rating
• Compliance: Both are ROHS3 compliant with matching ECCN and HTSUS classifications

The primary difference is packaging format (Tube for both) and moisture sensitivity level designation, which does not affect functional interchangeability in standard applications.

Parameter Comparison

Engineering Selection Recommendations

Both the SMM-125-01-SM-D and SMM-125-01-S-D are active production parts with full ROHS3 compliance and identical electrical and mechanical specifications. Selection between these parts should be based on:

• Availability: The SMM-125-01-S-D currently has higher inventory (924 units versus 736 units)
• Product Status: Both parts maintain active status with no planned obsolescence
• Compliance Requirements: Both satisfy identical regulatory classifications (ECCN EAR99, HTSUS 8536.69.4040)
• Supply Chain Continuity: Either part provides equivalent functional performance for board-to-board or cable connector applications requiring 50-position, 2.00mm pitch receptacle configurations

Frequently Asked Questions (FAQ)

Q: Are SMM-125-01-SM-D and SMM-125-01-S-D electrically interchangeable?

A: Yes. Both connectors share identical electrical specifications including 3.2A per contact current rating, 350VAC voltage rating, and gold-plated beryllium copper contacts. They are functionally equivalent for all standard applications.

Q: What is the difference between these two part numbers?

A: The primary difference is the moisture sensitivity level designation. The SMM-125-01-S-D is rated MSL 1 (Unlimited), while the SMM-125-01-SM-D does not have an MSL designation. This does not affect performance in standard operating environments.

Q: Can I use SMM-125-01-S-D as a direct replacement for SMM-125-01-SM-D on existing PCBs?

A: Yes. Both connectors have identical through-hole solder termination, contact geometry, and mounting footprint. No PCB redesign is required.

Q: Do both parts meet the same compliance standards?

A: Yes. Both are ROHS3 compliant with matching ECCN (EAR99) and HTSUS (8536.69.4040) classifications.

Q: What is the operating temperature range for these connectors?

A: Both parts operate across -55°C to 125°C with UL94 V-0 flammability rating.

Q: Are there any packaging differences between these parts?

A: Both parts are supplied in tube packaging. Inventory quantities differ, with SMM-125-01-S-D currently showing higher stock levels.