PCP1208-TD-H Equivalent & Substitute Parts

Part Overview

The PCP1208-TD-H is an NPN bipolar junction transistor manufactured by onsemi, rated for 200 V collector-emitter breakdown voltage and 700 mA maximum collector current. This device is designed for surface mount applications in the TO-243AA package and operates at a maximum junction temperature of 150°C with 1.3 W power dissipation capability.

The PCP1208-TD-H carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this transistor.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	200	V
Current - Collector (Ic) (Max)	700	mA
Power - Max	1.3	W
Frequency - Transition	120	MHz
DC Current Gain (hFE) (Min) @ Ic, Vce	200 @ 100mA, 5V	—
Vce Saturation (Max) @ Ib, Ic	200mV @ 35mA, 350mA	—
Operating Temperature (TJ)	150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-243AA	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the PCP1208-TD-H is determined by the following critical parameters:

Voltage Rating: The collector-emitter breakdown voltage must equal or exceed 200 V to maintain circuit protection and reliability margins.

Current Rating: The maximum collector current must equal or exceed 700 mA to support the intended load requirements.

Power Dissipation: The maximum power rating must equal or exceed 1.3 W to handle thermal loads without exceeding junction temperature limits.

Frequency Response: The transition frequency must equal or exceed 120 MHz to maintain switching performance characteristics.

DC Current Gain: The minimum hFE must support the required base drive conditions at specified collector current and voltage.

Package Compatibility: Surface mount TO-243AA package is required for mechanical and thermal interface compatibility.

Compliance: RoHS3 compliance and REACH unaffected status are mandatory for regulatory alignment.

Substitute parts are classified into two categories:

Direct Manufacturer Equivalent (2SC3648T-TD-E): Meets or exceeds all critical electrical parameters while maintaining active product status and full compliance certifications.

Similar Alternative (CXT2222A TR PBFREE, 2SCR512PT100): Provides functional substitution with trade-offs in specific parameters while maintaining core electrical performance within acceptable design margins.

Parameter Comparison

Parameter	PCP1208-TD-H	2SC3648T-TD-E	CXT2222A TR PBFREE	2SCR512PT100	PCP1203-P-TD-H
Transistor Type	NPN	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	200 V	160 V	40 V	30 V	30 V
Current - Collector (Ic) (Max)	700 mA	700 mA	600 mA	2 A	1.5 A
Power - Max	1.3 W	500 mW	1.2 W	2 W	1.3 W
Frequency - Transition	120 MHz	120 MHz	300 MHz	320 MHz	500 MHz
DC Current Gain (hFE) (Min) @ Ic, Vce	200 @ 100mA, 5V	100 @ 100mA, 5V	100 @ 150mA, 10V	200 @ 100mA, 2V	200 @ 100mA, 2V
Operating Temperature (TJ)	150°C	150°C	-65°C ~ 150°C	150°C	150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-243AA	TO-243AA	TO-243AA	TO-243AA	TO-243AA
Product Status	Obsolete	Active	Active	Active	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: 2SC3648T-TD-E

The 2SC3648T-TD-E is the manufacturer-recommended direct equivalent for the PCP1208-TD-H. This onsemi device maintains active product status, ensuring long-term availability and supply chain stability. The 2SC3648T-TD-E carries identical ROHS3 compliance and REACH unaffected certifications. While the collector-emitter breakdown voltage is reduced to 160 V and power dissipation is limited to 500 mW, these parameters remain suitable for applications where the original 200 V rating provides design margin. The transition frequency of 120 MHz matches the original specification exactly. This part is available in Cut Tape and Digi-Reel packaging formats, supporting both prototype and production volume requirements.

Secondary Recommendation: CXT2222A TR PBFREE

The CXT2222A TR PBFREE, manufactured by Central Semiconductor Corp, provides an alternative substitution path with active product status. This device is rated for 40 V collector-emitter breakdown and 600 mA maximum collector current. The transition frequency of 300 MHz exceeds the original specification, providing enhanced switching performance. Power dissipation is rated at 1.2 W, closely matching the original 1.3 W specification. This part is suitable for applications where the 200 V voltage rating is not a critical design requirement and where higher frequency performance is beneficial. The extended operating temperature range of -65°C to 150°C provides additional thermal margin compared to the original specification.

Tertiary Recommendation: 2SCR512PT100

The 2SCR512PT100, manufactured by Rohm Semiconductor, offers substitution for applications requiring higher current capacity. This device is rated for 30 V collector-emitter breakdown and 2 A maximum collector current, with 2 W power dissipation capability. The transition frequency of 320 MHz exceeds the original specification. This part is suitable for low-voltage, high-current applications where the original 200 V rating is not required. Active product status ensures supply availability.

Not Recommended: PCP1203-P-TD-H

The PCP1203-P-TD-H carries obsolete product status, identical to the original part. While this device shares the same 1.3 W power rating and 150°C operating temperature, the 30 V collector-emitter breakdown voltage is significantly reduced from the original 200 V specification. This part does not resolve the supply discontinuation issue and introduces voltage rating limitations.

Frequently Asked Questions (FAQ)

Q: Can the 2SC3648T-TD-E be used as a direct replacement for the PCP1208-TD-H in all applications?

A: The 2SC3648T-TD-E is suitable for applications where the collector-emitter breakdown voltage requirement does not exceed 160 V. The original PCP1208-TD-H is rated for 200 V. Circuit designs operating at voltages between 160 V and 200 V require evaluation to confirm adequate safety margins. All other electrical parameters, including collector current (700 mA), transition frequency (120 MHz), and operating temperature (150°C), are compatible.

Q: What is the primary difference between the 2SC3648T-TD-E and CXT2222A TR PBFREE?

A: The 2SC3648T-TD-E maintains the original 120 MHz transition frequency and is manufactured by onsemi, the original manufacturer. The CXT2222A TR PBFREE offers 300 MHz transition frequency and is manufactured by Central Semiconductor Corp. The CXT2222A is rated for 40 V collector-emitter breakdown compared to 160 V for the 2SC3648T-TD-E. Selection depends on voltage requirements and frequency performance needs.

Q: Are all substitute parts available in the same TO-243AA package?

A: All substitute parts listed are available in TO-243AA surface mount package format, ensuring mechanical and thermal interface compatibility with the original PCP1208-TD-H. Packaging variants (Cut Tape, Digi-Reel, Tape & Reel) differ by supplier and volume requirements but do not affect electrical performance or board-level compatibility.

Q: Do all substitute parts meet RoHS3 and REACH compliance requirements?

A: Yes. All substitute parts listed carry ROHS3 compliance certification and REACH unaffected status, matching the regulatory compliance profile of the original PCP1208-TD-H.

Q: Why is the PCP1203-P-TD-H not recommended as a substitute?

A: The PCP1203-P-TD-H carries obsolete product status, identical to the original part. Substituting one obsolete part for another does not resolve supply chain discontinuation. Additionally, the 30 V collector-emitter breakdown voltage is significantly reduced from the original 200 V specification, introducing voltage rating limitations that may not be acceptable for existing circuit designs.

Q: What is the impact of reduced power dissipation in the 2SC3648T-TD-E compared to the original PCP1208-TD-H?

A: The 2SC3648T-TD-E is rated for 500 mW maximum power dissipation compared to 1.3 W for the original PCP1208-TD-H. This reduction requires thermal analysis of the specific application. If the original design operates below 500 mW dissipation, the 2SC3648T-TD-E is fully compatible. Applications approaching or exceeding 500 mW dissipation require thermal management evaluation or consideration of alternative parts such as the 2SCR512PT100 (2 W rating) or CXT2222A TR PBFREE (1.2 W rating).

Q: Can the 2SCR512PT100 be used in high-voltage applications?

A: No. The 2SCR512PT100 is rated for 30 V collector-emitter breakdown voltage, significantly below the original PCP1208-TD-H specification of 200 V. This part is suitable only for low-voltage applications where the 30 V rating is adequate.

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