B1201UARP Equivalent & Substitute Parts

Part Overview

The B1201UARP is a Transient Voltage Suppressor (TVS) device manufactured by Littelfuse Inc., designed for circuit protection applications in SLIC systems. This component features adjustable voltage clamping with mixed technology in a 6-SMD, Gull Wing surface mount package. The B1201UARP is classified as obsolete, making identification of equivalent substitute parts essential for ongoing system maintenance and new design implementations where this component is specified.

Substiute Parts

B1201UARP

Littelfuse Inc.In Stock: 1031B1201UARP Datasheet

Current PartRFQ

B1201UALRP

Littelfuse Inc.In Stock: 852B1201UALRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the B1201UARP is determined by strict equivalence across the following critical parameters:

• Voltage - Clamping: Adjustable
• Technology: Mixed Technology
• Number of Circuits: 1
• Mounting Type: Surface Mount
• Package / Case: 6-SMD, Gull Wing
• Supplier Device Package: MS-013
• Base Product Number: B1201
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• Applications: SLIC

The B1201UALRP qualifies as a direct substitute because it maintains identical electrical specifications, mechanical packaging, and functional characteristics across all these parameters. The primary distinction is packaging format and product status.

Parameter Comparison

Engineering Selection Recommendations

The B1201UALRP is the direct functional equivalent to the B1201UARP. Both components share identical electrical and mechanical specifications within the Battrax® TVS device family. Selection between these parts should be based on the following criteria:

B1201UALRP is preferred when:

• New designs or production runs require active product status
• ROHS3 compliance is mandated by system requirements or regulatory standards
• Tape & Reel packaging format aligns with automated assembly processes

B1201UARP may be retained when:

• Existing inventory is available and system requirements do not mandate RoHS compliance
• Bulk packaging format is compatible with assembly operations
• Legacy system maintenance requires exact original part specifications

Both parts maintain identical performance characteristics for SLIC circuit protection applications and are mechanically and electrically interchangeable within the specified parameters.

Frequently Asked Questions (FAQ)

Q: Can B1201UALRP be used as a direct replacement for B1201UARP in existing designs?

A: Yes. The B1201UALRP is electrically and mechanically equivalent to the B1201UARP. Both components feature identical voltage clamping (adjustable), mixed technology, single circuit configuration, and MS-013 package specifications. The primary differences are packaging format (Tape & Reel vs. bulk) and product status (active vs. obsolete).

Q: What is the significance of the packaging format difference between these parts?

A: The B1201UARP is supplied in bulk packaging, while the B1201UALRP is supplied in Tape & Reel (TR) format. This distinction affects handling, storage, and assembly processes. Tape & Reel packaging is standard for automated pick-and-place assembly, while bulk packaging may be used for manual assembly or inventory management. The electrical and mechanical performance of the component itself is unaffected by packaging format.

Q: Does the RoHS compliance difference affect component performance?

A: No. RoHS compliance status reflects manufacturing process and material composition standards, not electrical or mechanical performance. The B1201UALRP is ROHS3 compliant, while the B1201UARP is RoHS non-compliant. Selection should be based on system regulatory requirements and compliance mandates, not performance characteristics.

Q: Are there any compatibility concerns when substituting B1201UALRP for B1201UARP?

A: No compatibility concerns exist. Both components are identical in electrical specifications, mechanical dimensions, mounting type (surface mount), and package configuration (6-SMD, Gull Wing, MS-013). They are fully interchangeable for SLIC circuit protection applications.

Q: Why is the B1201UARP classified as obsolete?

A: The B1201UARP has been discontinued by the manufacturer. The B1201UALRP represents the active equivalent in the Battrax® product line and should be used for new designs and ongoing production requirements.