DAP202KFHT146 Equivalent & Substitute Parts

Part Overview

The DAP202KFHT146 is a general-purpose diode array manufactured by Rohm Semiconductor, configured as a 1 Pair Common Anode arrangement rated for 80 V DC reverse voltage and 100 mA average rectified current per diode. The device is housed in a Surface Mount TO-236-3 (SC-59, SOT-23-3) package and supplied in Tape & Reel packaging.

This part carries a "Not For New Designs" product status, indicating it has been superseded or is in end-of-life phase. Locating equivalent substitute parts is necessary for ongoing production support, maintenance applications, and legacy system repairs where this diode array configuration remains in use.

Substiute Parts

DAP202KFHT146

Rohm SemiconductorIn Stock: 5297DAP202KFHT146 Datasheet

Current PartRFQ

DAP202KT146

Rohm SemiconductorIn Stock: 125322DAP202KT146 Datasheet

Parametric EquivalentRFQ

1SS181,LF

Toshiba Semiconductor and StorageIn Stock: 104891SS181,LF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DAP202KFHT146 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Diode Configuration: 1 Pair Common Anode
• Voltage - DC Reverse (Vr) (Max): 80 V
• Current - Average Rectified (Io) (per Diode): 100 mA
• Voltage - Forward (Vf) (Max) @ If: 1.2 V @ 100 mA
• Reverse Recovery Time (trr): 4 ns
• Speed Classification: Small Signal ≤ 200 mA (Io), Any Speed

Mechanical Parameters (Must Match):

• Package / Case: TO-236-3, SC-59, SOT-23-3
• Mounting Type: Surface Mount

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts identified below meet all electrical and mechanical requirements for direct replacement in existing circuit designs and PCB layouts.

Parameter Comparison

Engineering Selection Recommendations

DAP202KT146 (Rohm Semiconductor)

The DAP202KT146 is the primary substitute for the DAP202KFHT146. Both parts are manufactured by Rohm Semiconductor and share identical electrical specifications, including reverse voltage rating, forward voltage drop, reverse recovery time, and reverse leakage current. The DAP202KT146 carries an Active product status, ensuring continued availability and manufacturing support. The only difference is packaging format: DAP202KT146 is supplied in Cut Tape and Digi-Reel format rather than standard Tape & Reel. This part is suitable for production environments where packaging format flexibility is acceptable.

1SS181,LF (Toshiba Semiconductor and Storage)

The 1SS181,LF is a cross-manufacturer substitute manufactured by Toshiba Semiconductor and Storage. It maintains electrical equivalence in all critical parameters: 80 V reverse voltage rating, 100 mA average rectified current, 1.2 V forward voltage drop at 100 mA, and 4 ns reverse recovery time. The 1SS181,LF carries an Active product status. Two operational differences exist: reverse leakage current is specified at 500 nA @ 80 V (compared to 100 nA @ 70 V for the main part), and maximum junction operating temperature is 125°C (compared to 150°C for the main part). These differences are within acceptable tolerances for general-purpose rectification applications. The 1SS181,LF is supplied in Tape & Reel packaging, matching the original part's packaging format.

Both substitute parts are ROHS3 compliant with MSL 1 rating and are suitable for direct replacement in existing designs.

Frequently Asked Questions (FAQ)

Q: Can the DAP202KT146 be used as a direct replacement for the DAP202KFHT146?

A: Yes. The DAP202KT146 is electrically and mechanically equivalent to the DAP202KFHT146. Both parts feature identical diode configuration, voltage ratings, current ratings, forward voltage characteristics, and reverse recovery time. The primary difference is packaging format (Cut Tape & Digi-Reel versus standard Tape & Reel). PCB layout and circuit performance remain unchanged.

Q: What are the differences between the 1SS181,LF and the DAP202KFHT146?

A: The 1SS181,LF is electrically equivalent in all primary specifications: 80 V reverse voltage, 100 mA current rating, 1.2 V forward voltage drop, and 4 ns reverse recovery time. Two secondary differences exist: the 1SS181,LF specifies reverse leakage current at 500 nA @ 80 V (versus 100 nA @ 70 V for the main part), and its maximum junction temperature is 125°C (versus 150°C). Both parts use identical TO-236-3 surface mount packaging.

Q: Why is the DAP202KFHT146 marked "Not For New Designs"?

A: This designation indicates the part has reached end-of-life or has been superseded by newer alternatives. The DAP202KT146 (same manufacturer, active status) is the recommended path forward for new designs. The DAP202KFHT146 remains available for legacy system support and maintenance applications.

Q: Are all three parts (DAP202KFHT146, DAP202KT146, and 1SS181,LF) pin-compatible?

A: Yes. All three parts use the TO-236-3 (SC-59, SOT-23-3) surface mount package with identical pinout configuration for the 1 Pair Common Anode diode array. No PCB modifications are required for substitution.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel packaging?

A: Tape & Reel (TR) is continuous reel packaging for automated pick-and-place assembly. Cut Tape (CT) & Digi-Reel is a hybrid format offering both cut tape strips and reel options. Both formats contain the same components; the difference is in supply and handling logistics. Selection depends on production volume and assembly equipment compatibility.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The DAP202KT146 and 1SS181,LF are both ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the original DAP202KFHT146.

Q: Which substitute should I select for a new production run?

A: The DAP202KT146 is the recommended choice for new production. It is manufactured by the same supplier as the original part, carries Active product status, and maintains identical electrical specifications. If cross-manufacturer sourcing is required for supply chain resilience, the 1SS181,LF from Toshiba is an acceptable alternative with equivalent electrical performance.