RB495D-TP Equivalent & Substitute Parts

Part Overview

The RB495D-TP is a Schottky diode array manufactured by Micro Commercial Co, configured as 1 pair common cathode with 25 V reverse voltage rating and 400 mA average rectified current per diode. The device is packaged in SOT-23-3 (TO-236-3, SC-59) surface mount configuration. The RB495D-TP is classified as obsolete product status. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications.

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
Operating Temperature - Junction	-40°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the RB495D-TP are classified into two categories based on electrical parameter alignment:

Parametric Equivalents maintain identical electrical specifications across all critical parameters: 25 V reverse voltage, 400 mA average rectified current, 500 mV forward voltage at 200 mA, 70 µA reverse leakage at 25 V, and fast recovery speed characteristics. These parts are direct functional replacements with identical diode configuration (1 pair common cathode) and package type (SOT-23-3).

Similar Parts share the same diode configuration and package type but operate at higher voltage ratings (40 V) or different current specifications. These parts are suitable for applications where the higher voltage rating provides additional design margin or where current requirements differ from the original specification.

The substitution logic is based strictly on the following parameters:

Diode configuration (1 pair common cathode)
Technology (Schottky)
Package type (SOT-23-3 / TO-236-3 / SC-59)
Voltage and current ratings (equal or higher)
Forward voltage characteristics
Reverse leakage current
Fast recovery speed capability

Parameter Comparison

Parameter	RB495D-TP	RB495DS-TP	RB495DFHT146	BAT6405E6327HTSA1	SDM20E40C-7-F	ZHCS500TA
Manufacturer	Micro Commercial Co	Micro Commercial Co	Rohm Semiconductor	Infineon Technologies	Diodes Incorporated	Diodes Incorporated
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	Single Diode
Technology	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	25 V	25 V	25 V	40 V	40 V	40 V
Current - Average Rectified (Io)	400 mA	400 mA	400 mA	250 mA	400 mA (DC)	500 mA
Voltage - Forward (Vf) (Max) @ If	500 mV @ 200 mA	500 mV @ 200 mA	500 mV @ 200 mA	750 mV @ 100 mA	500 mV @ 200 mA	550 mV @ 500 mA
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	70 µA @ 25 V	70 µA @ 25 V	70 µA @ 25 V	2 µA @ 30 V	70 µA @ 25 V	40 µA @ 30 V
Operating Temperature - Junction	-40°C ~ 150°C	-55°C ~ 125°C	125°C (Max)	150°C (Max)	-30°C ~ 125°C	125°C (Max)
Mounting Type	Surface Mount	Surface Mount	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	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
Product Status	Obsolete	Active	Not For New Designs	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

RB495DS-TP is the primary parametric equivalent for the RB495D-TP. This part maintains identical electrical specifications including 25 V reverse voltage, 400 mA average rectified current, and 500 mV forward voltage at 200 mA. The RB495DS-TP is manufactured by Micro Commercial Co with active product status, ensuring long-term availability. The primary difference is packaging format (Tape & Reel versus bulk), which does not affect electrical performance. The RB495DS-TP is ROHS3 compliant and MSL 1 rated, matching the original part's compliance profile.

RB495DFHT146 is a parametric equivalent manufactured by Rohm Semiconductor with identical electrical specifications. This part carries automotive grade qualification (AEC-Q101) and is ROHS3 compliant. The product status is classified as "Not For New Designs," limiting its suitability for new development but remaining available for legacy system support.

BAT6405E6327HTSA1 is a similar part manufactured by Infineon Technologies with 40 V reverse voltage rating and 250 mA average rectified current. This part is automotive qualified (AEC-Q101) with active product status. The higher voltage rating provides additional design margin for applications operating below 25 V. The reduced current rating (250 mA versus 400 mA) requires verification that application current demands do not exceed this specification.

SDM20E40C-7-F is a similar part manufactured by Diodes Incorporated with 40 V reverse voltage rating and 400 mA average rectified current. This part maintains the same forward voltage characteristics (500 mV @ 200 mA) and reverse leakage current (70 µA @ 25 V) as the original RB495D-TP. The higher voltage rating accommodates applications requiring additional voltage margin. Product status is active with ROHS3 compliance.

ZHCS500TA is a similar part manufactured by Diodes Incorporated configured as a single diode (not a diode pair) with 40 V reverse voltage rating and 500 mA average rectified current. This part is suitable only for applications where a single diode configuration is acceptable. The higher current rating (500 mA) and voltage rating (40 V) provide design flexibility for applications with increased current or voltage requirements. Product status is active with ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can RB495DS-TP be used as a direct replacement for RB495D-TP?

A: Yes. The RB495DS-TP is a parametric equivalent with identical electrical specifications: 25 V reverse voltage, 400 mA average rectified current, 500 mV forward voltage at 200 mA, and 70 µA reverse leakage at 25 V. The primary difference is packaging format (Tape & Reel). Both parts are SOT-23-3 package and ROHS3 compliant. The RB495DS-TP has active product status, ensuring availability.

Q: What is the difference between parametric equivalents and similar parts?

A: Parametric equivalents maintain identical electrical specifications across all critical parameters. Similar parts share the same diode configuration and package type but operate at different voltage or current ratings. Parametric equivalents are direct functional replacements. Similar parts require application review to confirm that higher voltage or different current ratings are compatible with circuit requirements.

Q: Can BAT6405E6327HTSA1 replace RB495D-TP in all applications?

A: BAT6405E6327HTSA1 has a higher reverse voltage rating (40 V versus 25 V) and lower average rectified current (250 mA versus 400 mA). The higher voltage rating is compatible with applications operating at or below 25 V. However, the reduced current rating (250 mA) requires verification that application current demands do not exceed this specification. If the application requires 400 mA current capability, this part is not suitable.

Q: Is ZHCS500TA compatible with RB495D-TP?

A: ZHCS500TA is configured as a single diode, not a diode pair common cathode. The RB495D-TP is a diode pair configuration. ZHCS500TA is suitable only for applications where a single diode configuration is acceptable and the circuit topology does not require the common cathode pair configuration of the original part.

Q: What is the significance of product status (Active, Obsolete, Not For New Designs)?

A: Product status indicates component lifecycle and availability. Active status indicates the part is in current production with long-term availability. Obsolete status indicates the part is no longer manufactured. "Not For New Designs" indicates the part is available but not recommended for new development. For new designs, select parts with active status. For legacy system support, parts with "Not For New Designs" status remain available but with limited future support.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and MSL 1 rated, matching the original RB495D-TP compliance profile. All parts are suitable for applications requiring ROHS3 compliance.

Q: What is the operating temperature range difference between RB495D-TP and RB495DS-TP?

A: RB495D-TP operates from -40°C to 150°C. RB495DS-TP operates from -55°C to 125°C. The RB495DS-TP has a lower maximum junction temperature (125°C versus 150°C) and lower minimum temperature (-55°C versus -40°C). For applications requiring operation above 125°C, the RB495D-TP or BAT6405E6327HTSA1 (150°C max) are required.

Q: Can SDM20E40C-7-F be used in place of RB495D-TP?

A: SDM20E40C-7-F has a higher reverse voltage rating (40 V versus 25 V) and identical average rectified current (400 mA). The forward voltage and reverse leakage characteristics are identical. The higher voltage rating provides additional design margin for applications operating at or below 25 V. SDM20E40C-7-F is suitable as a substitute where the higher voltage rating is acceptable.

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