Equivalent & Substitute Parts for 2SD1733TLQ

Part Overview

The 2SD1733TLQ is a surface-mount NPN bipolar junction transistor (BJT) manufactured by Rohm Semiconductor. Key features include 80 V maximum collector-emitter voltage, 1 A collector current, 100MHz transition frequency, and 1 W power dissipation, in a CPT3 (TO-252-3/DPAK) package. The part is listed as "Not For New Designs," making it necessary to identify alternative transistors that meet equivalent electrical and mechanical parameters for continued availability and design compatibility.

Key Parameters

Parameter	Value
Transistor Type	NPN
Voltage - Collector Emitter Breakdown (Max)	80 V
Current - Collector (Ic) (Max)	1 A
Vce Saturation (Max) @ Ib, Ic	400mV @ 20mA, 500mA
Current - Collector Cutoff (Max)	1µA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce	120 @ 500mA, 3V
Power - Max	1 W
Frequency - Transition	100MHz
Operating Temperature	150°C (TJ)
Mounting Type	Surface Mount
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Supplier Device Package	CPT3
RoHS Status	ROHS3 Compliant
MSL	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution logic is based strictly on the following parameters:

Transistor Type: NPN
Maximum Collector-Emitter Breakdown Voltage
Maximum Collector Current
Saturation Voltage (Vce)
Collector Cutoff Current
Minimum DC Current Gain (hFE)
Maximum Power Dissipation
Transition Frequency
Operating Temperature
Mounting Type
Package Compatibility
RoHS and REACH Compliance
Moisture Sensitivity Level (MSL)

Substitute parts listed adhere to these parameter criteria. All substitute models are either manufacturer-recommended, direct alternatives, or similar based on electrical and mechanical compatibility within the confines of the provided data.

Parameter Comparison

Part Number	Manufacturer	Transistor Type	V(CE) Breakdown Max	I(C) Max	Vce Saturation (Max) @ Ib, Ic	Current - Collector Cutoff (Max)	DC Current Gain (hFE) (Min) @ Ic, Vce	Power - Max	Frequency - Transition	Operating Temperature	Mounting Type	Package / Case	RoHS Status	MSL	REACH Status
2SD1733TLQ	Rohm Semiconductor	NPN	80 V	1 A	400mV @ 20mA, 500mA	1µA (ICBO)	120 @ 500mA, 3V	1 W	100MHz	150°C (TJ)	Surface Mount	TO-252-3, DPAK (2 Leads + Tab), SC-63	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected
2SCR574D3TL1	Rohm Semiconductor	NPN	80 V	2 A	300mV @ 50mA, 1A	1µA (ICBO)	120 @ 100mA, 3V	10 W	280MHz	150°C (TJ)	Surface Mount	TO-252-3, DPAK (2 Leads + Tab), SC-63	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected
2SCR554P5T100	Rohm Semiconductor	NPN	80 V	1.5 A	300mV @ 25mA, 500mA	1µA (ICBO)	120 @ 100mA, 3V	500 mW	300MHz	150°C (TJ)	Surface Mount	TO-243AA	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected
ZXT1053AKTC	Diodes Incorporated	NPN	75 V	5 A	460mV @ 200mA, 5A	10nA	300 @ 1A, 2V	4 W	140MHz	-55°C ~ 150°C (TJ)	Surface Mount	TO-252-3, DPAK (2 Leads + Tab), SC-63	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected

Engineering Selection Recommendations

The main part, 2SD1733TLQ, is designated as "Not For New Designs." All listed substitutes have active product status and maintain compliance with ROHS3 and REACH standards. Moisture Sensitivity Level for all models is rated at 1 (Unlimited), ensuring compatibility with standard surface mount assembly processes. The substitute parts meet or exceed key electrical and mechanical specifications provided.

Frequently Asked Questions (FAQ)

Q1: What determines compatibility for substituting the 2SD1733TLQ?
A1: Compatibility is established strictly by matching transistor type, maximum voltage and current ratings, minimum current gain (hFE), saturation voltage, cutoff current, power dissipation, mounting type, and package specification.

Q2: Are all substitute parts surface mount and package compatible?
A2: All substitute transistors are surface-mount. Most use TO-252-3, DPAK packaging; 2SCR554P5T100 uses TO-243AA. Package choice should match design footprint requirements.

Q3: What compliance certifications do substitute parts have?
A3: Substitute parts are ROHS3 compliant, have Moisture Sensitivity Level 1 (Unlimited), and are REACH unaffected according to the supplied parameters.

Q4: Why is substitution necessary for 2SD1733TLQ?
A4: The product status is "Not For New Designs," indicating discontinuation for new applications and necessitating selection of substitutes for ongoing production or redesigns.

Q5: Do frequency and power specifications align with the original part?
A5: Substitute transistors match or exceed the main part in key parameters including frequency transition and maximum power, strictly as per the provided data.

Q6: Can the ZXT1053AKTC substitute for the 2SD1733TLQ?
A6: Based on the explicitly provided parameters, ZXT1053AKTC is an NPN surface-mount BJT with similar voltage, current, and package type. Selection must consider voltage breakdown and application-specific limits.

Q7: Are device, package, and mounting requirements strictly met by all substitutes?
A7: All substitutes meet surface-mount requirements; package variants must be matched to the PCB design constraints. Only TO-252-3, DPAK substitutes are mechanically identical to the main part.

Q8: Is minimum DC current gain (hFE) sufficiently matched?
A8: All substitutes meet or exceed the minimum hFE requirements specified for the main part.

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