DS1858B-050 Equivalent & Substitute Parts

Part Overview

The DS1858B-050 is a digital potentiometer manufactured by Analog Devices Inc./Maxim Integrated, categorized as a Data Acquisition component. This device features a 50kΩ resistance with 256 taps, dual-circuit configuration, and I2C interface capability. The main part is classified as Obsolete, which necessitates identification of active substitute components to maintain design continuity and ensure long-term supply availability.

Substiute Parts

DS1858B-050

Analog Devices Inc./Maxim IntegratedIn Stock: 841DS1858B-050 Datasheet

Current PartRFQ

DS1858B-050+

Analog Devices Inc./Maxim IntegratedIn Stock: 1001DS1858B-050+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS1858B-050 is determined by strict equivalence across the following critical parameters:

• Resistance value: 50kΩ
• Number of circuits: 2
• Number of taps: 256
• Interface protocol: I2C
• Memory type: Non-Volatile
• Supply voltage range: 3V ~ 5.5V
• Package type: 16-CSBGA (4x4)
• Operating temperature range: -40°C ~ 95°C
• Tolerance: ±20%
• Temperature coefficient: 50ppm/°C

The DS1858B-050+ qualifies as a direct substitute based on identical electrical and mechanical specifications. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The DS1858B-050+ is the direct substitute for the DS1858B-050. Both components share identical electrical specifications, mechanical dimensions, and functional characteristics. The DS1858B-050+ is classified as Active product status, ensuring continued availability and supply chain support. Additionally, the DS1858B-050+ carries ROHS3 compliance certification, whereas the original DS1858B-050 is RoHS non-compliant. For new designs or component replacement in systems subject to RoHS regulations, the DS1858B-050+ is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Are the DS1858B-050 and DS1858B-050+ electrically identical?

A: Yes. Both components feature identical resistance values (50kΩ), tap counts (256), circuit configuration (2 circuits), interface protocol (I2C), supply voltage range (3V ~ 5.5V), operating temperature range (-40°C ~ 95°C), and all other electrical parameters.

Q: What is the primary reason to transition from DS1858B-050 to DS1858B-050+?

A: The DS1858B-050 is classified as Obsolete, while the DS1858B-050+ is Active. The substitute ensures long-term supply availability and product support. Additionally, the DS1858B-050+ is ROHS3 compliant, addressing regulatory requirements.

Q: Are the packages identical between the two parts?

A: Yes. Both components use the 16-CSBGA (4x4) package with identical pinout and mechanical specifications, enabling direct board-level substitution without layout modifications.

Q: Does the packaging format differ between these parts?

A: The DS1858B-050 is supplied in standard packaging, while the DS1858B-050+ is supplied in Tray packaging. This distinction affects handling and storage but does not impact electrical or mechanical compatibility.

Q: Are there any compliance differences?

A: The DS1858B-050+ is ROHS3 compliant, whereas the DS1858B-050 is RoHS non-compliant. Both maintain REACH Unaffected status and identical Moisture Sensitivity Level (MSL 3, 168 Hours).