1SS355-TP Equivalent & Substitute Parts

Part Overview

The 1SS355-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, designed for surface mount applications in the SOD-323 package. This component operates at 80 V DC reverse voltage with a 100 mA average rectified current rating, suitable for small-signal switching and rectification circuits. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts are identified to provide design flexibility, supply chain alternatives, and equivalent functional performance in applications where the original part number may be unavailable or where alternative sourcing is required.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	80	V
Current - Average Rectified (Io)	100	mA
Voltage - Forward (Vf) (Max) @ If	1.2 @ 100 mA	V
Reverse Recovery Time (trr)	4	ns
Current - Reverse Leakage @ Vr	100 nA @ 80 V	nA
Capacitance @ Vr, F	3	pF
Operating Temperature - Junction	-55 to 150	°C
Package / Case	SOD-323	—
Mounting Type	Surface Mount	—
Technology	Standard	—

Substitute Part Grouping Explanation

Substitute parts for the 1SS355-TP are identified based on electrical parameter equivalence and mechanical compatibility. The substitution criteria are strictly limited to the following parameters:

Voltage - DC Reverse (Vr) (Max): 80 V
Current - Average Rectified (Io): 100 mA
Voltage - Forward (Vf) (Max) @ If: 1.2 V @ 100 mA
Reverse Recovery Time (trr): 4 ns
Current - Reverse Leakage @ Vr: 100 nA @ 80 V
Operating Temperature - Junction: -55°C to 150°C
Package / Case: SOD-323
Mounting Type: Surface Mount
Technology: Standard

Parts meeting all these electrical and mechanical specifications are classified as parametric equivalents. The 1SS355-H from Formosa Microsemi Co., Ltd. satisfies all substitution criteria and is therefore listed as a direct equivalent.

Parameter Comparison

Parameter	1SS355-TP (Micro Commercial Co)	1SS355-H (Formosa Microsemi Co., Ltd.)
Voltage - DC Reverse (Vr) (Max)	80 V	80 V
Current - Average Rectified (Io)	100 mA	100 mA
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 100 mA	1.2 V @ 100 mA
Reverse Recovery Time (trr)	4 ns	4 ns
Current - Reverse Leakage @ Vr	100 nA @ 80 V	100 nA @ 80 V
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C
Package / Case	SOD-323	SOD-323
Mounting Type	Surface Mount	Surface Mount
Technology	Standard	Standard
Product Status	Active	Active
RoHS Compliance	RoHS3 Compliant	RoHS Compliant

Engineering Selection Recommendations

Both the 1SS355-TP and 1SS355-H are active production components with equivalent electrical specifications and identical mechanical packaging. Selection between these parts is based on availability, supply chain considerations, and compliance requirements.

The 1SS355-TP carries RoHS3 compliance certification, while the 1SS355-H carries RoHS compliance. Both parts meet environmental and regulatory standards applicable to their respective manufacturing regions. The choice between these equivalents should be determined by procurement requirements, inventory availability, and any specific compliance mandates of the end application or customer specification.

Frequently Asked Questions (FAQ)

Q: Can the 1SS355-H be used as a direct replacement for the 1SS355-TP in existing designs?

A: Yes. The 1SS355-H meets all electrical and mechanical specifications of the 1SS355-TP, including voltage rating, current capacity, forward voltage drop, reverse recovery time, and operating temperature range. Both components use the SOD-323 surface mount package and are classified as standard technology small-signal diodes.

Q: Are there package differences between the 1SS355-TP and 1SS355-H?

A: Both parts use the SOD-323 package for surface mount applications. The supplier device package designation differs slightly (SOD-323 versus SOD-323F), but both are mechanically and electrically compatible for PCB assembly.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution eligibility is determined by matching the following parameters: 80 V DC reverse voltage rating, 100 mA average rectified current, 1.2 V maximum forward voltage at 100 mA, 4 ns reverse recovery time, 100 nA reverse leakage current at 80 V, and -55°C to 150°C operating temperature range.

Q: Do both parts have the same moisture sensitivity level?

A: The 1SS355-TP is specified with MSL 1 (Unlimited). The 1SS355-H moisture sensitivity level is not provided in the available specifications. Verify MSL requirements with the component supplier if moisture sensitivity is a critical parameter for your application environment.

Q: Are there compliance differences between these parts?

A: The 1SS355-TP carries RoHS3 compliance, while the 1SS355-H carries RoHS compliance. Both parts are compliant with their respective regional environmental standards. Confirm compliance requirements with your procurement or quality assurance department based on end-market requirements.

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