MPLAD30KP78A Equivalent & Substitute Parts

Part Overview

The MPLAD30KP78A is a unidirectional Zener-type Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology. This surface mount component is designed for general-purpose transient voltage suppression applications, featuring a 78V reverse standoff voltage and 126V maximum clamping voltage at peak pulse current. The device is currently in active production status with 1099 units available in bulk packaging. Alternative equivalent parts may be required due to packaging availability, supply chain considerations, or specific compliance requirements for end-use applications.

Substiute Parts

MPLAD30KP78A

Microchip TechnologyIn Stock: 1202MPLAD30KP78A Datasheet

Current PartRFQ

TPK30KP78A

SMC Diode SolutionsIn Stock: 963TPK30KP78A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MPLAD30KP78A is determined by electrical parameter equivalence across the following critical specifications:

• Voltage - Reverse Standoff (Typ): 78V
• Voltage - Breakdown (Min): 86.7V
• Voltage - Clamping (Max) @ Ipp: 126V
• Current - Peak Pulse (10/1000µs): 240A
• Power - Peak Pulse: 30000W
• Type: Zener
• Unidirectional Channels: 1
• Operating Temperature Range: -55°C to 150°C
• Mounting Type: Surface Mount

The TPK30KP78A manufactured by SMC Diode Solutions meets all electrical parameter requirements for direct substitution. Differences in packaging format (PLAD versus SPD-4) and compliance certifications do not affect electrical performance or functional compatibility in applications requiring these specifications.

Parameter Comparison

Engineering Selection Recommendations

MPLAD30KP78A (Microchip Technology)

Select this part when bulk packaging is preferred and RoHS non-compliance is acceptable for the application. This device is actively produced with current inventory of 1099 units.

TPK30KP78A (SMC Diode Solutions)

Select this part when ROHS3 compliance is required for end-use applications or when regulatory frameworks mandate RoHS adherence. This device is actively produced with current inventory of 939 units. The SPD-4 package format provides equivalent electrical performance with different physical dimensions and land pattern requirements.

Both parts are classified under ECCN EAR99 and share the same HTSUS code (8541.10.0080), indicating equivalent trade classification. Both devices maintain Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity constraints during storage or handling.

Frequently Asked Questions (FAQ)

Q: Can TPK30KP78A replace MPLAD30KP78A in existing circuit designs?

A: Yes, provided the printed circuit board layout accommodates the SPD-4 package footprint. All electrical parameters are identical. The land pattern and physical dimensions differ between PLAD and SPD-4 packages, requiring PCB redesign or use of adapter solutions.

Q: What is the difference between PLAD and SPD-4 packages?

A: PLAD and SPD-4 are distinct surface mount package formats with different physical dimensions and lead configurations. Both are nonstandard SMD packages. Mechanical compatibility requires verification against specific PCB layout requirements and assembly equipment capabilities.

Q: Does RoHS compliance affect electrical performance?

A: No. RoHS compliance status reflects manufacturing process and material composition standards, not electrical performance. Both MPLAD30KP78A and TPK30KP78A deliver identical electrical specifications regardless of RoHS status.

Q: Are there inventory considerations for substitution?

A: MPLAD30KP78A has 1099 units in stock (bulk packaging), while TPK30KP78A has 939 units in stock (bag packaging). Selection may depend on required order quantities and packaging format preferences.

Q: What does REACH Affected versus REACH Unaffected mean?

A: REACH Affected indicates the part is subject to REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) regulatory requirements. REACH Unaffected indicates exemption from REACH requirements. Selection depends on end-use market and regulatory jurisdiction requirements.

Q: Can these parts be used interchangeably in the same assembly?

A: Electrical interchangeability is confirmed. Physical interchangeability requires PCB design compatibility with the specific package format (PLAD or SPD-4). Assembly process validation is necessary when switching between package types.