Bourns 2015-42-SMH-RPLF Gas Discharge Tube Equivalent & Substitute Parts

Part Overview

The Bourns 2015-42-SMH-RPLF is a Gas Discharge Tube (GDT) rated for 420V DC spark-over voltage with 5kA impulse discharge current capacity in a 2-pole surface mount configuration. This component is classified as Obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The substitute part maintains the same voltage rating and pole configuration while offering enhanced discharge current capacity.

Substiute Parts

2015-42-SMH-RPLF

Bourns Inc.In Stock: 12062015-42-SMH-RPLF Datasheet

Current PartRFQ

2017-42-SMH-RPLF

Bourns Inc.In Stock: 7932017-42-SMH-RPLF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bourns 2017-42-SMH-RPLF qualifies as a direct substitute based on the following critical parameters:

Matching Parameters:

• Voltage - DC Spark Over (Nominal): 420 V
• Tolerance: ±20%
• Number of Poles: 2
• Fail Short: No
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

Differentiating Parameter:

• Impulse Discharge Current (8/20µs): 10000A (10kA) versus 5000A (5kA)

The 2017 series provides double the discharge current capacity while maintaining identical voltage protection characteristics and compliance certifications. The substitute part operates within the same electrical protection envelope with enhanced surge handling capability.

Parameter Comparison

Engineering Selection Recommendations

The 2017-42-SMH-RPLF is the appropriate substitute for the obsolete 2015-42-SMH-RPLF based on product lifecycle status. The substitute part is currently Active and maintains full compliance with ROHS3 and REACH requirements. Both components share identical voltage protection ratings and pole configuration, ensuring functional compatibility in 420V two-pole protection circuits.

The increased impulse discharge current rating of the substitute part (10kA versus 5kA) provides enhanced surge handling capability without introducing incompatibility. PCB layout modifications may be required due to package geometry differences (Disc 8.00mm Tabbed SMD versus 2-SMD), and mounting orientation changes from standard to horizontal surface mount configuration.

Frequently Asked Questions (FAQ)

Q: Can the 2017-42-SMH-RPLF directly replace the 2015-42-SMH-RPLF without circuit modifications?

A: Both parts maintain identical 420V DC spark-over voltage and 2-pole configuration. However, package geometry differs (Disc 8.00mm Tabbed SMD versus 2-SMD), and mounting orientation changes to horizontal. PCB layout and footprint adjustments are necessary.

Q: What is the significance of the increased 10kA discharge current in the substitute part?

A: The 2017 series provides double the impulse discharge current capacity. This enhancement does not affect voltage protection characteristics but increases the component's ability to handle larger transient surge events within the same 420V protection envelope.

Q: Are both parts compliant with current regulatory requirements?

A: Both the main part and substitute are ROHS3 Compliant and REACH Unaffected. The substitute part's Active status ensures ongoing availability and support for new designs.

Q: What is the difference between standard and horizontal surface mount orientation?

A: The 2015 series uses standard surface mount configuration, while the 2017 series uses horizontal surface mount orientation. This affects component placement and PCB routing considerations during board redesign.

Q: Is the ±20% tolerance specification identical between both parts?

A: Yes, both parts maintain ±20% tolerance on the 420V DC spark-over voltage rating, ensuring consistent protection characteristics across the specified voltage range.