1SS193-TP Equivalent & Substitute Parts

Part Overview

The 1SS193-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 80 V DC reverse voltage and 100 mA average rectified current in a surface mount SOT-23 package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary for ongoing maintenance, repair, and legacy system support where the original component is no longer readily available or when design flexibility permits component selection from active product lines.

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	500 nA @ 80 V	nA
Operating Temperature - Junction (Max)	150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Technology	Standard	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the 1SS193-TP is determined by matching the following critical electrical and mechanical parameters:

Electrical Parameters:

Voltage - DC Reverse (Vr) (Max): 80 V minimum
Current - Average Rectified (Io): 100 mA minimum
Voltage - Forward (Vf) (Max) @ If: 1.2 V @ 100 mA maximum
Operating Temperature - Junction (Max): 150°C minimum
Technology: Standard

Mechanical Parameters:

Mounting Type: Surface Mount
Package / Case: TO-236-3, SC-59, SOT-23-3 compatible
Compliance: ROHS3 Compliant, REACH Unaffected

All substitute parts listed meet or exceed these parameters and are compatible with applications originally designed for the 1SS193-TP. Substitute parts are grouped by their individual electrical characteristics and product status.

Parameter Comparison

Parameter	1SS193-TP (Micro Commercial Co)	DAN212KT146 (Rohm)	DAN217FHT146 (Rohm)	M1MA152KT1G (onsemi)
Voltage - DC Reverse (Vr) (Max)	80 V	80 V	80 V	80 V
Current - Average Rectified (Io)	100 mA	100 mA	100 mA (per Diode)	100 mA
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 100 mA	1.2 V @ 100 mA	1.2 V @ 100 mA	1.2 V @ 100 mA
Reverse Recovery Time (trr)	4 ns	4 ns	4 ns	3 ns
Current - Reverse Leakage @ Vr	500 nA @ 80 V	100 nA @ 70 V	100 nA @ 70 V	100 nA @ 75 V
Operating Temperature - Junction (Max)	150°C	150°C	150°C	150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
Product Status	Not For New Designs	Not For New Designs	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

DAN217FHT146 (Rohm Semiconductor) is the preferred substitute for new applications and ongoing designs. This part carries Active product status, ensuring long-term availability and manufacturer support. It meets all electrical and mechanical requirements of the 1SS193-TP and maintains full ROHS3 compliance and REACH unaffected status. The DAN217FHT146 is a diode array with 1 pair common cathode configuration, suitable for applications requiring dual-diode functionality in a single package.

M1MA152KT1G (onsemi) is an alternative substitute with Active product status. This single-diode component offers improved reverse recovery time (3 ns versus 4 ns) and lower reverse leakage current (100 nA @ 75 V), providing enhanced performance characteristics. It is fully compliant with ROHS3 and REACH requirements.

DAN212KT146 (Rohm Semiconductor) is a parametric equivalent with Not For New Designs status. While electrically compatible, this part shares the same end-of-life classification as the original 1SS193-TP and should not be selected for new designs. It remains suitable for legacy system maintenance where component availability is confirmed.

All three substitute parts are surface mount devices in TO-236-3/SC-59/SOT-23-3 compatible packages and operate at the same maximum junction temperature (150°C). Selection between active alternatives should be based on specific application requirements, package configuration needs, and long-term supply chain considerations.

Frequently Asked Questions (FAQ)

Q: Can the 1SS193-TP be directly replaced with DAN217FHT146?

A: Yes. The DAN217FHT146 meets all electrical parameters of the 1SS193-TP (80 V reverse voltage, 100 mA current rating, 1.2 V forward voltage @ 100 mA, 150°C junction temperature). Both are surface mount devices in compatible TO-236-3/SC-59/SOT-23-3 packages. The DAN217FHT146 is a diode array with common cathode configuration, which may require circuit layout adjustment if the original design utilized a single diode.

Q: What is the difference between the substitute parts?

A: DAN217FHT146 and M1MA152KT1G are single-diode and diode-array configurations with Active product status, ensuring ongoing availability. DAN212KT146 is a single-diode equivalent with Not For New Designs status. M1MA152KT1G offers superior reverse recovery time (3 ns) and lower reverse leakage current compared to the original part. DAN217FHT146 provides dual-diode functionality in a single package.

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes. All substitute parts listed (DAN212KT146, DAN217FHT146, M1MA152KT1G) are ROHS3 compliant and REACH unaffected, matching the compliance status of the original 1SS193-TP.

Q: Which substitute should be selected for new product designs?

A: DAN217FHT146 or M1MA152KT1G are appropriate for new designs, as both carry Active product status. DAN212KT146 should not be used in new designs due to its Not For New Designs classification. Selection between the two active alternatives depends on whether dual-diode (DAN217FHT146) or single-diode (M1MA152KT1G) functionality is required.

Q: Are the packages physically identical?

A: All substitute parts use the same package designation (TO-236-3, SC-59, SOT-23-3). Physical dimensions and pin configurations are compatible. However, the DAN217FHT146 is a diode array with different internal configuration (1 pair common cathode), which may affect circuit connectivity depending on the original application.

Q: What is the moisture sensitivity level of the substitute parts?

A: All substitute parts, including the original 1SS193-TP, have Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

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