P4KE6.8-E3/54 Equivalent & Substitute Parts

Part Overview

The P4KE6.8-E3/54 is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This through-hole component is designed for general-purpose transient voltage suppression applications. The part is currently obsolete, making identification of suitable substitutes essential for ongoing design support and component procurement.

Substiute Parts

P4KE6.8-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 1073P4KE6.8-E3/54 Datasheet

Current PartRFQ

P4KE6.8A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 5868P4KE6.8A-E3/54 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P4KE6.8-E3/54 is determined by the following critical parameters:

• Unidirectional channel configuration (1 channel required)
• Voltage rating class: Reverse standoff voltage in the 5.5V to 5.8V range
• Clamping voltage performance: Maximum clamping voltage between 10.5V and 10.8V
• Peak pulse current capability: Minimum 37A at 10/1000µs pulse
• Peak pulse power rating: 400W
• Through-hole mounting in DO-204AL (DO-41) axial package
• Operating temperature range: -55°C to 175°C
• RoHS3 compliance and MSL Level 1 rating

The P4KE6.8A-E3/54 meets all these criteria and is classified as a direct substitute. This part maintains electrical equivalence while offering improved product availability due to its Active status.

Parameter Comparison

Engineering Selection Recommendations

The P4KE6.8A-E3/54 is the qualified substitute for the obsolete P4KE6.8-E3/54. Both parts maintain identical mechanical compatibility through the DO-204AL (DO-41) axial through-hole package and share the same operating temperature range of -55°C to 175°C.

Electrical parameters remain within acceptable tolerance bands for transient voltage suppression applications. The substitute exhibits a slightly higher reverse standoff voltage (5.8V vs. 5.5V) and marginally improved peak pulse current capability (38.1A vs. 37A), while maintaining equivalent clamping voltage performance and power dissipation ratings.

Both parts carry ROHS3 compliance certification and MSL Level 1 rating, ensuring regulatory and environmental compatibility. The P4KE6.8A-E3/54 is currently in Active production status with significantly higher inventory availability, making it the preferred selection for new designs and ongoing component procurement.

Frequently Asked Questions (FAQ)

Q: Can the P4KE6.8A-E3/54 be used as a direct replacement for the P4KE6.8-E3/54?

A: Yes. Both parts are unidirectional TVS diodes with identical package geometry (DO-204AL, DO-41, Axial), operating temperature range (-55°C to 175°C), and power rating (400W peak pulse). Electrical parameters fall within compatible ranges for general-purpose transient suppression applications.

Q: What are the key differences between these two parts?

A: The P4KE6.8A-E3/54 features a higher reverse standoff voltage (5.8V vs. 5.5V), higher breakdown voltage (6.45V vs. 6.12V), and slightly higher peak pulse current (38.1A vs. 37A). The clamping voltage is marginally lower (10.5V vs. 10.8V). The substitute is in Active production status, whereas the original is Obsolete.

Q: Are there any packaging differences?

A: No. Both parts use identical through-hole DO-204AL (DO-41) axial packaging. Mechanical fit and PCB layout compatibility are fully maintained.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the P4KE6.8-E3/54 and P4KE6.8A-E3/54 are ROHS3 compliant with MSL Level 1 rating. REACH status is Unaffected for both parts.

Q: Which part should be selected for new designs?

A: The P4KE6.8A-E3/54 is recommended for new designs due to its Active product status and superior inventory availability. The original P4KE6.8-E3/54 is Obsolete and should not be specified for new applications.