2DD1766P-13 Equivalent & Substitute Parts

Part Overview

The 2DD1766P-13 is an NPN bipolar junction transistor manufactured by Diodes Incorporated, rated for 32 V collector-emitter breakdown voltage and 2 A maximum collector current in a surface mount SOT-89-3 package. This device is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to support ongoing design requirements, inventory management, and production continuity where the original part is no longer available through standard distribution channels.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	32	V
Current - Collector (Ic) (Max)	2	A
Vce Saturation (Max)	800	mV @ 200mA, 2A
Power - Max	1	W
Frequency - Transition	220	MHz
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	TO-243AA (SOT-89-3)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the 2DD1766P-13 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

Transistor type must be NPN
Collector-emitter breakdown voltage must be greater than or equal to 32 V
Maximum collector current must be greater than or equal to 2 A
Power dissipation must be greater than or equal to 1 W
Operating temperature range must encompass -55°C to 150°C

Mechanical Compatibility Criteria:

Surface mount package in TO-243AA or equivalent footprint
SOT-89-3 or compatible pinout configuration
Moisture sensitivity level MSL 1 (Unlimited)

Compliance Requirements:

RoHS3 compliance required
REACH status must be unaffected or compliant

Substitute parts are grouped into two categories: Direct Electrical Equivalents (matching or exceeding all primary electrical specifications within the same package family) and Functional Alternatives (meeting electrical requirements with package or performance trade-offs).

Parameter Comparison

Parameter	2DD1766P-13	FCX491TA	2SC5731T100R	NSS30101LT1G	PBSS303NX,115	PBSS4240XX
Manufacturer	Diodes Inc.	Diodes Inc.	Rohm Semi.	onsemi	Nexperia	Nexperia
Transistor Type	NPN	NPN	NPN	NPN	NPN	NPN
Vce Breakdown (Max) [V]	32	60	30	30	30	40
Ic (Max) [A]	2	1	2	1	5.1	2
Power (Max) [W]	1	1	—	0.31	2.1	0.5
Frequency - Transition [MHz]	220	150	—	100	130	150
Operating Temperature [°C]	-55 to 150	-65 to 150	—	-55 to 150	to 150	to 150
Package / Case	TO-243AA (SOT-89-3)	TO-243AA (SOT-89-3)	TO-243AA (MPT3)	TO-236-3 (SOT-23-3)	TO-243AA (SOT-89)	TO-243AA (SOT-89)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

PBSS4240XX (Nexperia USA Inc.) is the primary substitute for the 2DD1766P-13. This device maintains electrical equivalence with 2 A maximum collector current and 40 V breakdown voltage, exceeding the original 32 V specification. The part is in active product status with AEC-Q100 automotive qualification and ROHS3 compliance. The TO-243AA package footprint is identical to the original device.

PBSS303NX,115 (Nexperia USA Inc.) provides an alternative with enhanced current handling capability (5.1 A maximum) and higher power dissipation (2.1 W), suitable for applications requiring increased thermal margin. This part carries AEC-Q100 automotive qualification and maintains full compliance requirements.

FCX491TA (Diodes Incorporated) is an active product from the original manufacturer with 1 A maximum collector current. This part is suitable for applications where the 2 A requirement can be reduced. The 60 V breakdown voltage provides additional voltage margin. Active product status and ROHS3 compliance are confirmed.

2SC5731T100R (Rohm Semiconductor) matches the 2 A collector current and 30 V breakdown voltage specifications. This part is in active product status with ROHS3 compliance. The MPT3 package is mechanically compatible with TO-243AA footprint requirements.

NSS30101LT1G (onsemi) is available in high inventory volume with active product status. This part operates at 1 A maximum collector current and is packaged in SOT-23-3 (TO-236-3), which differs from the original SOT-89-3 package. Selection of this part requires PCB layout modification to accommodate the smaller package footprint.

Frequently Asked Questions (FAQ)

Q: Can the FCX491TA replace the 2DD1766P-13 in all applications?

A: The FCX491TA is suitable for applications where the maximum collector current requirement does not exceed 1 A. The original 2DD1766P-13 is rated for 2 A maximum collector current. If the circuit design requires 2 A operation, FCX491TA is not appropriate. The 60 V breakdown voltage of FCX491TA exceeds the 32 V specification of the original part and provides additional voltage margin.

Q: What is the primary difference between PBSS4240XX and PBSS303NX,115?

A: Both parts are manufactured by Nexperia and share the same TO-243AA package. The PBSS303NX,115 is rated for 5.1 A maximum collector current and 2.1 W power dissipation, compared to PBSS4240XX at 2 A and 500 mW. The PBSS303NX,115 is suitable for applications requiring higher current handling and thermal performance. Both parts carry AEC-Q100 automotive qualification.

Q: Why is NSS30101LT1G listed as a substitute if it uses a different package?

A: The NSS30101LT1G meets the electrical requirements for NPN transistor operation at 30 V and 1 A. However, the SOT-23-3 package differs from the original SOT-89-3 package, requiring PCB layout modification. This part is included due to its high inventory availability and active product status. Package compatibility must be verified before selection.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed are ROHS3 compliant. The 2DD1766P-13 original part is also ROHS3 compliant. Moisture sensitivity level is MSL 1 (Unlimited) for all parts, indicating no special moisture handling requirements during storage or assembly.

Q: What is the significance of AEC-Q100 qualification on PBSS4240XX and PBSS303NX,115?

A: AEC-Q100 qualification indicates that these parts meet automotive industry reliability and quality standards established by the Automotive Electronics Council. This qualification is relevant for applications in automotive or high-reliability environments. The original 2DD1766P-13 does not carry this designation.

Q: Can I use 2SC5731T100R as a direct replacement without PCB modification?

A: The 2SC5731T100R uses the MPT3 package, which is mechanically compatible with the TO-243AA footprint of the original 2DD1766P-13. No PCB layout modification is required. However, detailed electrical specifications for this part (Vce saturation, DC current gain, and transition frequency) are not provided in the available data, requiring verification against circuit requirements.

Q: Which substitute part has the highest transition frequency?

A: The original 2DD1766P-13 operates at 220 MHz transition frequency. Among the substitute parts, FCX491TA and PBSS4240XX both operate at 150 MHz, which is lower than the original specification. NSS30101LT1G operates at 100 MHz. If high-frequency performance is critical to circuit operation, the reduced transition frequency of substitute parts must be evaluated against circuit bandwidth requirements.

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