93C46B-E/SN Equivalent & Substitute Parts Reference

Part Overview

The Microchip Technology 93C46B-E/SN is an active memory IC in the Memory category, supplied in 8-SOIC (0.154", 3.90mm Width) tube packaging. It is a Non-Volatile, EEPROM-type device featuring a 1 Kbit memory size organized as 64 x 16 bits, supporting the Microwire interface with a clock frequency up to 2 MHz. The device’s operational characteristics include a supply voltage range of 4.5V to 5.5V, an extended temperature range from -40°C to +125°C, and a 2ms write cycle time per word or page. Alternatives are sometimes required for supply continuity, drop-in replacement in legacy designs, or to match inventory/certification requirements.

Substiute Parts

93C46B-E/SN

Microchip TechnologyIn Stock: 400893C46B-E/SN Datasheet

Current PartRFQ

BR93L46RF-WE2

Rohm SemiconductorIn Stock: 15400BR93L46RF-WE2 Datasheet

MFR RecommendedRFQ

BR93L46RFJ-WE2

Rohm SemiconductorIn Stock: 9308BR93L46RFJ-WE2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution is based strictly on the following allowed parameters as provided: memory type (EEPROM), memory size (1Kbit), memory organization (64 x 16), interface (Microwire), clock frequency (2 MHz), mounting type (Surface Mount), and form factor/package outline (8-SOIC-compatible). Only devices with ROHS3 compliance, MSL 1, and active product status are considered, ensuring essential compliance and reliability criteria are met. Substitution does not include any unlisted specifications or inferred compatibility.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed—BR93L46RF-WE2 and BR93L46RFJ-WE2—are classified as active, ROHS3 compliant, MSL 1, and REACH unaffected. All substitute parts hold the ECCN EAR99 export classification. Selection based strictly on matching compliance, reliability status, and active availability within the specified product category and supplied parameters.

Frequently Asked Questions (FAQ)

Q1: What are the primary characteristics to match when selecting a substitute for 93C46B-E/SN?
A1: The matched parameters include memory type (EEPROM), memory size (1Kbit), memory organization (64 x 16), interface (Microwire), clock frequency (2 MHz), voltage supply range, mounting type (Surface Mount), package type (8-SOIC or compatible), product status (Active), RoHS status, and MSL.

Q2: Are the substitute parts RoHS and REACH compliant?
A2: Yes. All parts listed are ROHS3 compliant and REACH unaffected.

Q3: Do all substitutes use the same package dimensions as 93C46B-E/SN?
A3: The BR93L46RFJ-WE2 uses 8-SOIC (0.154", 3.90mm Width), matching the 93C46B-E/SN exactly. The BR93L46RF-WE2 uses a slightly different 8-SOIC (0.173", 4.40mm Width) package.

Q4: Are there differences in operating temperature range?
A4: Yes. The 93C46B-E/SN operates from -40°C to 125°C. Both BR93L46RF-WE2 and BR93L46RFJ-WE2 operate from -40°C to 85°C.

Q5: Are substitute parts programmable in the same category as the original part?
A5: Yes. All listed substitutes and the original part are categorized as "DiGi-Electronics Programmable: Verified."