P4SMA62 Equivalent & Substitute Parts

Part Overview

The P4SMA62 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose transient voltage protection in surface-mount applications. This component features a 53V reverse standoff voltage with an 89.25V maximum clamping voltage and 4.8A peak pulse current capability in a DO-214AC (SMA) package.

The P4SMA62 is classified as obsolete. Equivalent and substitute parts are available from active manufacturers including Eaton Electronics Division, Vishay General Semiconductor, and Micro Commercial Co, offering comparable electrical performance with current product support and availability.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	53	V
Voltage - Breakdown (Min)	55.96	V
Voltage - Clamping (Max) @ Ipp	89.25	V
Current - Peak Pulse (10/1000µs)	4.8	A
Power - Peak Pulse	400	W
Operating Temperature Range	-65 to 150	°C (TJ)
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Type	Zener	—
Unidirectional Channels	1	—

Substitute Part Grouping Explanation

Substitution of the P4SMA62 is determined by strict equivalence across the following electrical and mechanical parameters:

Voltage - Reverse Standoff (Typ): 53V
Voltage - Clamping (Max) @ Ipp: 85V to 89.25V range
Current - Peak Pulse (10/1000µs): 4.7A to 4.8A
Power - Peak Pulse: 400W
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount
Type: Zener, Unidirectional (1 channel)

Substitute parts must maintain the same reverse standoff voltage and support equivalent peak pulse current and power dissipation. Clamping voltage variations within the specified range are acceptable for transient suppression applications. All substitute parts are housed in the same DO-214AC (SMA) surface-mount package, ensuring mechanical and electrical compatibility.

Parameter Comparison

Parameter	P4SMA62 (Littelfuse)	P4SMA62A (Eaton)	P4SMA62A-E3/5A (Vishay)	SMAJP4KE62A-TP (MCC)
Voltage - Reverse Standoff (Typ)	53V	53V	53V	53V
Voltage - Breakdown (Min)	55.96V	58.9V	58.9V	58.9V
Voltage - Clamping (Max) @ Ipp	89.25V	85V	85V	85V
Current - Peak Pulse (10/1000µs)	4.8A	4.8A	4.7A	4.8A
Power - Peak Pulse	400W	400W	400W	400W
Operating Temperature Range	-65 to 150°C	-55 to 150°C	-65 to 150°C	-55 to 175°C
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Type	Zener	Zener	Zener	Zener
Unidirectional Channels	1	1	1	1
RoHS Status	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	REACH Unaffected
Product Status	Obsolete	Active	Active	Active

Engineering Selection Recommendations

All three substitute parts are active products with current manufacturer support and availability, addressing the obsolescence of the original P4SMA62.

P4SMA62A (Eaton Electronics Division) is designated as the MFR Recommended substitute. This part maintains full electrical equivalence with 53V reverse standoff voltage, 85V clamping voltage, and 4.8A peak pulse current. It carries RoHS compliance certification and is available in Tape & Reel packaging with 1340 units in stock. Operating temperature range is -55 to 150°C.

P4SMA62A-E3/5A (Vishay General Semiconductor - Diodes Division) is a direct manufacturer equivalent with ROHS3 compliance. Peak pulse current is specified at 4.7A, marginally lower than the original 4.8A specification. Operating temperature range extends to -65 to 150°C, matching the original part. This part is available in DO-214AC (SMA) packaging with 752 units in stock.

SMAJP4KE62A-TP (Micro Commercial Co) provides electrical equivalence with 53V reverse standoff voltage, 85V clamping voltage, and 4.8A peak pulse current. This part offers the widest operating temperature range at -55 to 175°C and is available in Bulk packaging with 1158 units in stock. REACH compliance status is unaffected.

Selection should be based on packaging requirements (Tape & Reel versus Bulk), operating temperature constraints, and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can P4SMA62A substitute for P4SMA62 in all applications?

A: Yes. P4SMA62A maintains electrical equivalence across all critical parameters: 53V reverse standoff voltage, 85V clamping voltage, 4.8A peak pulse current, and 400W peak pulse power. Both are housed in DO-214AC (SMA) surface-mount packages with identical pinout and footprint compatibility.

Q: What is the difference between the clamping voltage specifications (89.25V vs 85V)?

A: The P4SMA62 specifies a maximum clamping voltage of 89.25V, while substitute parts specify 85V. Both values fall within acceptable transient suppression performance for the 53V reverse standoff voltage class. The lower clamping voltage of substitute parts provides slightly tighter voltage regulation during transient events.

Q: Does P4SMA62A-E3/5A meet the same performance requirements?

A: P4SMA62A-E3/5A is electrically equivalent with one specification variance: peak pulse current is rated at 4.7A compared to the original 4.8A. This 0.1A difference is negligible for general-purpose transient suppression applications. All other parameters, including voltage ratings and power dissipation, are identical.

Q: Are there packaging differences between substitute parts?

A: Yes. P4SMA62A is supplied in Tape & Reel (TR) packaging. SMAJP4KE62A-TP is supplied in Bulk packaging. Both are compatible with standard surface-mount assembly processes. Selection depends on production volume and assembly line requirements.

Q: What is the operating temperature range difference?

A: P4SMA62 and P4SMA62A-E3/5A operate from -65 to 150°C. P4SMA62A operates from -55 to 150°C. SMAJP4KE62A-TP extends to -55 to 175°C. For applications requiring operation below -55°C, P4SMA62A-E3/5A or the original P4SMA62 are required.

Q: Are all substitute parts RoHS compliant?

A: P4SMA62A carries RoHS compliance certification. P4SMA62A-E3/5A is ROHS3 compliant. SMAJP4KE62A-TP has REACH Unaffected status. Verify compliance requirements for your specific application and regulatory jurisdiction.

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