P6KE170A-B Equivalent & Substitute Parts

Part Overview

The P6KE170A-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose transient voltage protection applications. This component features a 145V reverse standoff voltage with a 234V maximum clamping voltage and 2.6A peak pulse current capability in a through-hole DO-204AC (DO-15) axial package. The part maintains Active product status and is RoHS3 compliant. Substitute parts are identified to provide equivalent electrical and mechanical performance for applications requiring component availability, inventory optimization, or supply chain flexibility.

Substiute Parts

P6KE170A-B

LittelfuseIn Stock: 925P6KE170A-B Datasheet

Current PartRFQ

P6KE170A

Fairchild SemiconductorIn Stock: 15563P6KE170A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6KE170A-B are qualified based on strict electrical and mechanical parameter matching within the TVS diode category. The substitution criteria are:

• Voltage Rating Match: Reverse standoff voltage of 145V (±tolerance), breakdown voltage minimum of 162V, and clamping voltage maximum of 234V
• Current Capability: Peak pulse current of 2.6A at 10/1000µs pulse duration
• Power Dissipation: Peak pulse power rating of 600W
• Package Compatibility: DO-204AC / DO-15 axial through-hole configuration
• Diode Type: Unidirectional Zener TVS diode with single channel
• Application Class: General-purpose transient voltage suppression
• Compliance: RoHS3 compliance and REACH unaffected status

Parts meeting all these parameters are electrically and mechanically interchangeable for the specified application.

Parameter Comparison

Engineering Selection Recommendations

Both the P6KE170A-B (Littelfuse) and P6KE170A (Fairchild Semiconductor) are Active status products with identical electrical specifications and package configurations. Selection between these parts should be based on:

• Availability and Lead Time: The Fairchild Semiconductor P6KE170A variant shows higher inventory availability (15,503 pcs vs. 844 pcs), making it suitable for high-volume procurement or urgent delivery requirements.
• Temperature Operating Range: The P6KE170A-B supports a lower minimum operating temperature (-55°C vs. -50°C), providing broader thermal coverage for applications requiring extended cold-temperature operation.
• Compliance Equivalence: Both parts maintain identical ECCN (EAR99) and HTSUS classifications, ensuring equivalent regulatory and export compliance status.
• Supply Chain Strategy: Either part may be selected as a primary or secondary source based on supplier relationships, cost structure, and inventory positioning.

Frequently Asked Questions (FAQ)

Q: Are P6KE170A-B and P6KE170A electrically identical?

A: Yes. Both parts share identical voltage ratings (145V standoff, 162V breakdown minimum, 234V clamping maximum), current capability (2.6A peak pulse), and power dissipation (600W). They are electrically interchangeable for general-purpose transient voltage suppression applications.

Q: What is the difference in operating temperature range?

A: The P6KE170A-B operates from -55°C to 175°C, while the P6KE170A operates from -50°C to 175°C. The P6KE170A-B provides 5°C additional cold-temperature margin. For applications operating above -50°C, both parts are equivalent.

Q: Are the packages identical?

A: Yes. Both parts use the DO-204AC / DO-15 axial through-hole package configuration. They are mechanically interchangeable on PCBs designed for this package type.

Q: Can I substitute P6KE170A for P6KE170A-B in existing designs?

A: Yes, provided your application operates within the -50°C to 175°C temperature range. If your design requires operation below -50°C, the P6KE170A-B is required.

Q: What compliance certifications apply to both parts?

A: Both parts are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8541.10.0080. They meet equivalent regulatory requirements for industrial and commercial applications.

Q: Are there any packaging or moisture sensitivity differences?

A: Both parts carry MSL (Moisture Sensitivity Level) 1, indicating unlimited shelf life without moisture control requirements. No special handling or storage conditions are necessary.