RB495DFHT146 Equivalent & Substitute Parts

Part Overview

The RB495DFHT146 is a Schottky diode array manufactured by Rohm Semiconductor, configured as 1 pair common cathode with a maximum reverse voltage of 25 V and average rectified current of 400 mA per diode. The device is packaged in Surface Mount TO-236-3 (SC-59, SOT-23-3) format and is qualified to AEC-Q101 automotive standards with ROHS3 compliance.

This part carries a product status of "Not For New Designs," indicating it has been superseded or is in end-of-life phase. Identifying equivalent substitute parts is necessary for design continuity, inventory management, and ensuring long-term component availability for existing applications and production lines.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	25 V
Current - Average Rectified (Io) (per Diode)	400 mA
Voltage - Forward (Vf) (Max) @ If	500 mV @ 200 mA
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	70 µA @ 25 V
Package / Case	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the RB495DFHT146 is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

Diode configuration (1 Pair Common Cathode)
Schottky technology classification
Maximum reverse voltage (25 V)
Average rectified current per diode (400 mA)
Forward voltage characteristics (500 mV @ 200 mA)
Fast recovery speed (≤ 500 ns, > 200 mA)
Reverse leakage current (70 µA @ 25 V)

Mechanical & Environmental Parameters:

Surface mount package type (TO-236-3, SC-59, SOT-23-3)
RoHS3 compliance
Moisture sensitivity level (MSL 1)

The RB495DS-TP manufactured by Micro Commercial Co meets all specified electrical and mechanical parameters, establishing it as a parametric equivalent substitute for the RB495DFHT146.

Parameter Comparison

Parameter	RB495DFHT146 (Rohm)	RB495DS-TP (Micro Commercial Co)	Match Status
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	Equivalent
Technology	Schottky	Schottky	Equivalent
Voltage - DC Reverse (Vr) (Max)	25 V	25 V	Equivalent
Current - Average Rectified (Io) (per Diode)	400 mA	400 mA	Equivalent
Voltage - Forward (Vf) (Max) @ If	500 mV @ 200 mA	500 mV @ 200 mA	Equivalent
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Equivalent
Current - Reverse Leakage @ Vr	70 µA @ 25 V	70 µA @ 25 V	Equivalent
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent
Product Status	Not For New Designs	Active	Substitute is Active

Engineering Selection Recommendations

The RB495DS-TP is a direct parametric equivalent to the RB495DFHT146 across all specified electrical and mechanical parameters. The primary distinction is product status: the RB495DFHT146 is designated "Not For New Designs," while the RB495DS-TP maintains "Active" status.

For applications currently using the RB495DFHT146, the RB495DS-TP provides functional continuity with identical electrical performance and package compatibility. Both parts are ROHS3 compliant and carry MSL 1 rating, ensuring equivalent environmental and regulatory compliance.

The RB495DS-TP is suitable for both new designs and replacement applications where the RB495DFHT146 specifications are required. The active product status of the RB495DS-TP provides improved long-term availability and supply chain stability compared to the obsolescence trajectory of the RB495DFHT146.

Frequently Asked Questions (FAQ)

Q: Can the RB495DS-TP be used as a direct replacement for the RB495DFHT146?

A: Yes. The RB495DS-TP meets all electrical and mechanical specifications of the RB495DFHT146, including reverse voltage (25 V), rectified current (400 mA per diode), forward voltage (500 mV @ 200 mA), and package format (TO-236-3, SC-59, SOT-23-3). Both parts are Schottky diode arrays with 1 pair common cathode configuration.

Q: Are there any differences in operating temperature range?

A: The RB495DFHT146 specifies a maximum junction temperature of 125°C. The RB495DS-TP specifies an operating temperature range of -55°C to 125°C. This extended range in the substitute part does not affect compatibility for applications within the original part's thermal envelope.

Q: Do both parts have the same package footprint?

A: Yes. Both the RB495DFHT146 and RB495DS-TP use the TO-236-3 (SC-59, SOT-23-3) surface mount package, ensuring identical PCB footprint and reflow soldering compatibility.

Q: What is the significance of the "Not For New Designs" status on the RB495DFHT146?

A: This designation indicates the part is in end-of-life phase and is not recommended for new product development. The RB495DS-TP, with "Active" status, is the appropriate choice for new designs requiring equivalent functionality.

Q: Are both parts RoHS compliant?

A: Yes. Both the RB495DFHT146 and RB495DS-TP are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, meeting equivalent environmental and regulatory requirements.

Q: What is the base product number relationship between these parts?

A: Both parts share the base product number RB495, indicating they are part of the same diode array family. The RB495DS-TP represents the current production equivalent within this family.

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