CPH3209-TL-E Equivalent & Substitute Parts

Part Overview

The CPH3209-TL-E is an NPN bipolar junction transistor manufactured by onsemi, rated for 30V collector-emitter breakdown voltage and 3A maximum collector current. This device is designed for surface mount applications in the 3-CPH package and operates at frequencies up to 450MHz with a maximum power dissipation of 900mW.

The CPH3209-TL-E is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades where the original part is no longer readily available from primary sources.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	30	V
Current - Collector (Ic) (Max)	3	A
Power - Max	900	mW
Frequency - Transition	450	MHz
Vce Saturation (Max) @ Ib, Ic	155mV @ 75mA, 1.5A	—
DC Current Gain (hFE) (Min) @ Ic, Vce	200 @ 500mA, 2V	—
Current - Collector Cutoff (Max)	100	nA
Mounting Type	Surface Mount	—
Package / Case	SC-96	—
Operating Temperature (Max)	150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the CPH3209-TL-E is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor Type: NPN
Voltage - Collector Emitter Breakdown (Max): 30V or greater
Current - Collector (Ic) (Max): 3A or greater
Power - Max: 900mW or greater
Mounting Type: Surface Mount
Operating Temperature: 150°C or greater

Secondary Compatibility Factors:

Frequency - Transition: 200MHz or greater
DC Current Gain (hFE): 200 or greater at specified conditions
Current - Collector Cutoff (Max): 100nA or less
RoHS3 Compliance

Substitute parts are grouped into two categories based on their electrical performance relative to the main part:

Category A - Direct Electrical Equivalents: Parts that meet or exceed all primary substitution criteria with minimal parameter variance.

Category B - Functional Substitutes: Parts that meet primary substitution criteria but operate at reduced current ratings or power dissipation, suitable for applications with lower current demands.

Parameter Comparison

Parameter	CPH3209-TL-E	2SD2673TL	2SD2657TL	NSS40201LT1G	2SC2411KT146R	2SC2411-P-TP
Manufacturer	onsemi	Rohm Semiconductor	Rohm Semiconductor	onsemi	Rohm Semiconductor	Micro Commercial Co
Transistor Type	NPN	NPN	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	30V	30V	30V	40V	32V	32V
Current - Collector (Ic) (Max)	3A	3A	1.5A	2A	500mA	500mA
Power - Max	900mW	1W	1W	460mW	200mW	200mW
Frequency - Transition	450MHz	200MHz	300MHz	150MHz	250MHz	250MHz
DC Current Gain (hFE) (Min) @ Ic, Vce	200 @ 500mA, 2V	270 @ 200mA, 2V	270 @ 100mA, 2V	200 @ 500mA, 2V	120 @ 100mA, 3V	82 @ 100mA, 3V
Current - Collector Cutoff (Max)	100nA	100nA	100nA	100nA	1µA	1µA
Vce Saturation (Max) @ Ib, Ic	155mV @ 75mA, 1.5A	250mV @ 30mA, 1.5A	350mV @ 50mA, 1A	115mV @ 200mA, 2A	400mV @ 50mA, 500mA	400mV @ 50mA, 500mA
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SC-96 (3-CPH)	SC-96 (TSMT3)	SC-96 (TSMT3)	TO-236-3 (SOT-23-3)	TO-236-3 (SOT-23-3)	TO-236-3 (SOT-23-3)
Operating Temperature (Max)	150°C	150°C	150°C	150°C	150°C	150°C
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified

Engineering Selection Recommendations

2SD2673TL (Rohm Semiconductor) - Primary Substitute

The 2SD2673TL is the closest functional equivalent to the CPH3209-TL-E. It maintains identical voltage and current ratings (30V, 3A), operates at the same maximum junction temperature (150°C), and is housed in the same SC-96 package family (TSMT3). The device is ROHS3 compliant and currently in active production status. The 2SD2673TL provides superior power dissipation (1W versus 900mW) and improved saturation voltage characteristics. Frequency response is reduced to 200MHz, which is acceptable for most applications not requiring the full 450MHz bandwidth of the original part.

2SD2657TL (Rohm Semiconductor) - Secondary Substitute

The 2SD2657TL operates at 30V and 1.5A maximum ratings with 1W power dissipation. This device is suitable for applications where collector current requirements do not exceed 1.5A. It maintains SC-96 package compatibility and ROHS3 compliance. The 300MHz transition frequency provides adequate bandwidth for most switching applications. This substitute is appropriate for current-limited circuit designs.

NSS40201LT1G (onsemi) - Alternative Substitute

The NSS40201LT1G is an active product from the original manufacturer (onsemi) with enhanced voltage rating (40V) and 2A current capability. This device is packaged in SOT-23-3 (TO-236-3), which differs from the original 3-CPH package and requires PCB layout modification. The part is ROHS3 compliant and offers reduced power dissipation (460mW). This substitute is applicable when package footprint changes are acceptable and voltage headroom is beneficial.

2SC2411KT146R and 2SC2411-P-TP (Reduced Current Substitutes)

These parts are limited to 500mA maximum collector current and 200mW power dissipation. They are suitable only for low-current signal switching applications and are not recommended for designs requiring the full 3A capability of the original part. Both devices are packaged in SOT-23-3 format and require PCB redesign.

Product Status Consideration

All recommended substitute parts maintain active production status, ensuring long-term availability and supply chain stability. The CPH3209-TL-E obsolete status necessitates transition to one of these active alternatives for new designs and ongoing production support.

Frequently Asked Questions (FAQ)

Q: Can the 2SD2673TL directly replace the CPH3209-TL-E without circuit modification?

A: The 2SD2673TL is electrically compatible with the CPH3209-TL-E for applications operating at or below 3A collector current and 30V collector-emitter voltage. Both devices share the SC-96 package family. However, the TSMT3 supplier package variant may have different lead geometry compared to the original 3-CPH package. Physical PCB footprint verification is required before implementation.

Q: What is the primary limitation of the NSS40201LT1G as a substitute?

A: The NSS40201LT1G is packaged in SOT-23-3 (TO-236-3) format, which differs from the original 3-CPH package. This requires PCB layout redesign and cannot be used as a direct drop-in replacement. Additionally, the maximum collector current is limited to 2A, which is below the original 3A specification. This substitute is appropriate only when package footprint changes are feasible.

Q: Are the 2SC2411KT146R and 2SC2411-P-TP suitable for high-current applications?

A: No. Both devices are limited to 500mA maximum collector current and 200mW power dissipation. These parts are designed for low-current signal switching applications and cannot support the 3A current capability of the CPH3209-TL-E. Use these substitutes only in applications where collector current does not exceed 500mA.

Q: What is the significance of the transition frequency difference between the CPH3209-TL-E (450MHz) and the 2SD2673TL (200MHz)?

A: The transition frequency indicates the maximum frequency at which the transistor maintains useful gain. The CPH3209-TL-E operates at 450MHz, while the 2SD2673TL operates at 200MHz. For applications operating below 200MHz, this difference is not significant. For RF or high-frequency switching applications requiring operation above 200MHz, the reduced bandwidth of the 2SD2673TL may be limiting. Verify application frequency requirements before substitution.

Q: Do all substitute parts meet RoHS3 compliance requirements?

A: The 2SD2673TL, 2SD2657TL, NSS40201LT1G, and 2SC2411KT146R are all ROHS3 compliant. The 2SC2411-P-TP RoHS status is not specified in available documentation. Confirm RoHS compliance status with the supplier before selecting this part for applications with RoHS requirements.

Q: What package considerations apply when selecting a substitute?

A: The CPH3209-TL-E uses the SC-96 package (3-CPH supplier variant). The 2SD2673TL and 2SD2657TL use SC-96 package (TSMT3 supplier variant), which may have different lead geometry. The NSS40201LT1G, 2SC2411KT146R, and 2SC2411-P-TP use SOT-23-3 (TO-236-3) package, which requires complete PCB footprint redesign. Verify package compatibility with existing PCB layouts before implementation.

Q: Which substitute offers the best overall compatibility with the original CPH3209-TL-E?

A: The 2SD2673TL provides the best overall compatibility. It maintains identical voltage (30V) and current (3A) ratings, operates at the same maximum junction temperature (150°C), uses the same SC-96 package family, and is ROHS3 compliant with active production status. The primary trade-off is reduced transition frequency (200MHz versus 450MHz), which is acceptable for most applications not requiring the full bandwidth of the original part.

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