DAP202UG Equivalent & Substitute Parts

Part Overview

The DAP202UG is a general-purpose diode array manufactured by onsemi, configured as a 1 Pair Common Anode with 80 V reverse voltage rating and 100 mA average rectified current per diode. The device is housed in a Surface Mount SC-70, SOT-323 package. The DAP202UG is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design requirements and production continuity.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Anode
Voltage - DC Reverse (Vr) (Max)	80 V
Current - Average Rectified (Io) (per Diode)	100 mA (DC)
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 100 mA
Reverse Recovery Time (trr)	10 ns
Current - Reverse Leakage @ Vr	100 nA @ 70 V
Operating Temperature - Junction (Max)	150°C
Mounting Type	Surface Mount
Package / Case	SC-70, SOT-323
Technology	Standard
Speed Classification	Small Signal ≤ 200mA (Io), Any Speed

Substitute Part Grouping Explanation

Substitute parts for the DAP202UG are classified into two categories based on electrical parameter alignment:

Parametric Equivalents maintain identical or superior electrical specifications across all critical parameters: reverse voltage (80 V), average rectified current (100 mA per diode), forward voltage (1.2 V @ 100 mA), reverse recovery time (10 ns), and maximum junction temperature (150°C). These parts are direct functional replacements with no derating required.

Similar Parts share the same diode configuration, package, and mounting type but differ in one or more electrical parameters. These parts are suitable for applications where the specified parameter variance does not exceed design margins. Substitution requires verification that the application tolerates the parameter differences.

The following parameters determine substitution eligibility:

Diode Configuration: 1 Pair Common Anode (mandatory)
Package / Case: SC-70, SOT-323 (mandatory)
Mounting Type: Surface Mount (mandatory)
Voltage - DC Reverse (Vr) (Max): 80 V minimum
Current - Average Rectified (Io) (per Diode): 100 mA minimum
Voltage - Forward (Vf) (Max) @ If: 1.2 V @ 100 mA or lower
Operating Temperature - Junction (Max): 150°C minimum

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	trr (ns)	Ir @ Vr	Tj (Max)	Product Status	Package
DAP202UG	onsemi	80 V	100 mA	1.2 V @ 100 mA	10 ns	100 nA @ 70 V	150°C	Obsolete	SC-70, SOT-323
M1MA142WAT1G	onsemi	80 V	100 mA	1.2 V @ 100 mA	10 ns	100 nA @ 75 V	150°C	Active	SC-70, SOT-323
SM1MA142WAT1G	onsemi	80 V	100 mA	1.2 V @ 100 mA	10 ns	100 nA @ 75 V	150°C	Active	SC-70, SOT-323
SM1MA142WKT1G	onsemi	80 V	100 mA	1.2 V @ 100 mA	10 ns	100 nA @ 75 V	150°C	Active	SC-70, SOT-323
DAP202U-TP	Micro Commercial Co	80 V	100 mA	1.2 V @ 100 mA	4 ns	100 nA @ 70 V	150°C	Active	SC-70, SOT-323
BAW56WT1G	Motorola	70 V	200 mA	1.25 V @ 150 mA	6 ns	2.5 µA @ 70 V	150°C	Active	SC-70, SOT-323
1PS300,115	Nexperia USA Inc.	80 V	170 mA	1.2 V @ 100 mA	4 ns	500 nA @ 80 V	150°C	Active	SC-70, SOT-323

Engineering Selection Recommendations

Parametric Equivalent Selection (Direct Replacement)

The following parts are parametric equivalents of the DAP202UG and are suitable for direct substitution:

M1MA142WAT1G (onsemi): Active status, identical electrical specifications, RoHS3 compliant, REACH unaffected. Available in Tape & Reel packaging.
SM1MA142WAT1G (onsemi): Active status, identical electrical specifications, RoHS3 compliant, REACH unaffected, AEC-Q101 automotive qualified. Available in Tape & Reel packaging.
SM1MA142WKT1G (onsemi): Active status, identical electrical specifications, RoHS3 compliant, REACH unaffected, AEC-Q101 automotive qualified. Available in Tape & Reel packaging with highest inventory availability (15,848 pcs).
DAP202U-TP (Micro Commercial Co): Active status, identical electrical specifications, REACH unaffected. Reverse recovery time is 4 ns (faster than original 10 ns). Available in Bulk packaging.

Similar Part Selection (Parameter Variance)

1PS300,115 (Nexperia USA Inc.): Active status, identical reverse voltage and forward voltage specifications. Current rating is 170 mA per diode (70% higher than 100 mA specification). Reverse recovery time is 4 ns (faster). AEC-Q101 automotive qualified, RoHS3 compliant. Suitable for applications where increased current capacity is beneficial or neutral.
BAW56WT1G (Motorola): Active status, reverse voltage is 70 V (10 V lower than 80 V specification). Current rating is 200 mA per diode (100% higher). Forward voltage is 1.25 V @ 150 mA (slightly higher). Reverse recovery time is 6 ns (faster). Not suitable for applications requiring full 80 V reverse voltage rating.

Frequently Asked Questions (FAQ)

Q: Can DAP202U-TP be used as a direct replacement for DAP202UG?

A: Yes. DAP202U-TP is electrically equivalent with identical reverse voltage (80 V), current rating (100 mA per diode), and forward voltage (1.2 V @ 100 mA). The reverse recovery time is 4 ns compared to the original 10 ns, which represents improved performance. Both devices use the SC-70, SOT-323 package and Surface Mount technology.

Q: What is the difference between M1MA142WAT1G, SM1MA142WAT1G, and SM1MA142WKT1G?

A: All three parts are parametric equivalents with identical electrical specifications. SM1MA142WAT1G and SM1MA142WKT1G include AEC-Q101 automotive qualification, making them suitable for automotive applications. SM1MA142WKT1G has the highest inventory availability (15,848 pcs). M1MA142WAT1G lacks automotive qualification but is otherwise electrically identical.

Q: Can BAW56WT1G replace DAP202UG?

A: BAW56WT1G is not a direct replacement. While it shares the same package and diode configuration, the reverse voltage rating is 70 V compared to the required 80 V. This part is suitable only for applications with maximum reverse voltage requirements of 70 V or less. The current rating is higher (200 mA per diode), but this does not compensate for the reduced voltage rating.

Q: Is 1PS300,115 suitable for DAP202UG replacement?

A: 1PS300,115 is suitable for applications where the increased current capacity (170 mA per diode versus 100 mA) does not create design conflicts. The reverse voltage (80 V) and forward voltage (1.2 V @ 100 mA) are identical to the original specification. The faster reverse recovery time (4 ns) represents improved performance. Verification is required that the application does not depend on the original 100 mA current limit.

Q: What packaging options are available for equivalent parts?

A: M1MA142WAT1G, SM1MA142WAT1G, SM1MA142WKT1G, and 1PS300,115 are available in Tape & Reel (TR) packaging. DAP202U-TP is available in Bulk packaging. All parts use the SC-70, SOT-323 Surface Mount package format.

Q: Are the substitute parts RoHS compliant?

A: M1MA142WAT1G, SM1MA142WAT1G, SM1MA142WKT1G, DAP202U-TP, and 1PS300,115 are all RoHS3 compliant. All parts are REACH unaffected.

Q: Which substitute parts have automotive qualification?

A: SM1MA142WAT1G, SM1MA142WKT1G, and 1PS300,115 are AEC-Q101 qualified for automotive applications. M1MA142WAT1G and DAP202U-TP do not carry automotive qualification.

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