RabbitCore RCM3750 Embedded Module (20-101-1028) Equivalent & Substitute Parts

Part Overview

The RabbitCore RCM3750 (20-101-1028) is an embedded module featuring a Rabbit 3000 processor operating at 22.1MHz with 512KB internal flash memory and 1MB external flash memory. This module is classified as obsolete and is no longer recommended for new designs. Finding equivalent or substitute parts is necessary for legacy system maintenance, repair, and continued support of existing deployments using this embedded platform.

Substiute Parts

20-101-1028

DigiIn Stock: 121220-101-1028 Datasheet

Current PartRFQ

20-101-1305

DigiIn Stock: 102520-101-1305 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The RabbitCore RCM3750 (20-101-1028) has one identified substitute part: RabbitCore RCM3700 (20-101-1305). Substitution eligibility is determined by the following critical parameters:

• Core Processor: Rabbit 3000
• Speed: 22.1MHz
• Flash Size: 512KB (Internal), 1MB (External)
• RAM Size: 512kB
• Connector Type: IDC Header 2x20
• Size / Dimension: 1.200" L x 2.950" W (30.00mm x 75.00mm)

The substitute part maintains identical electrical specifications and physical form factor, ensuring functional compatibility in existing applications.

Parameter Comparison

Engineering Selection Recommendations

Both the RCM3750 (20-101-1028) and RCM3700 (20-101-1305) are classified as legacy products. The RCM3750 is obsolete, while the RCM3700 is designated as not for new designs. Both modules are RoHS compliant and carry equivalent electrical and mechanical specifications.

The primary distinction is the operating temperature range: the RCM3750 supports -40°C to 70°C, while the RCM3700 operates from 0°C to 70°C. Selection between these parts should be based on the specific temperature requirements of the application environment.

Frequently Asked Questions (FAQ)

Q: Can the RCM3700 (20-101-1305) directly replace the RCM3750 (20-101-1028)?

A: Yes, provided the operating temperature range of 0°C to 70°C is compatible with your application. The RCM3700 maintains identical processor, memory, connector, and physical dimensions as the RCM3750.

Q: What is the difference between these two modules?

A: The primary difference is the operating temperature range. The RCM3750 operates from -40°C to 70°C, while the RCM3700 operates from 0°C to 70°C. All other electrical and mechanical parameters are identical.

Q: Are both parts RoHS compliant?

A: Yes, both the RCM3750 and RCM3700 are RoHS compliant.

Q: What connector type is used on these modules?

A: Both modules use an IDC Header 2x20 connector for interfacing with host systems.

Q: Can I use the RCM3700 in applications requiring the -40°C to 0°C temperature range?

A: No. The RCM3700 is rated for 0°C to 70°C operation only. Applications requiring operation below 0°C must use the RCM3750 or identify alternative solutions outside this product family.