2SC5868TLR Equivalent & Substitute Parts

Part Overview

The 2SC5868TLR is an NPN bipolar junction transistor manufactured by Rohm Semiconductor, designed for surface mount applications in the TSMT3 package. This device operates at a maximum collector voltage of 60V with a collector current rating of 500mA and a maximum power dissipation of 500mW. The 2SC5868TLR is classified as "Not For New Designs," indicating that while the part remains in inventory, alternative solutions are preferred for new circuit development. Identifying equivalent and substitute parts is necessary to support legacy system maintenance, ensure design flexibility, and provide options when the primary part becomes unavailable.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Collector-Emitter Breakdown Voltage (Max)	60	V
Collector Current (Max)	500	mA
Power Dissipation (Max)	500	mW
Transition Frequency	300	MHz
Vce Saturation (Max)	300	mV @ 10mA, 100mA
DC Current Gain (hFE Min)	180	@ 50mA, 2V
Operating Temperature (Max)	150	°C
Mounting Type	Surface Mount	—
Package	TSMT3 (SC-96)	—

Substitute Part Grouping Explanation

Substitution of the 2SC5868TLR is determined by strict alignment of electrical and mechanical parameters. The primary criteria for equivalence are:

Electrical Parameters:

Collector-Emitter breakdown voltage must equal or exceed 60V
Collector current rating must equal or exceed 500mA
Power dissipation must equal or exceed 500mW
Transition frequency should support the intended application frequency range
DC current gain (hFE) characteristics must be compatible with circuit biasing requirements

Mechanical Parameters:

Surface mount configuration required
Package compatibility with circuit board layout and assembly processes

Substitute parts are grouped into two categories:

Category A: Direct Electrical Equivalents (60V, 500mA minimum) Parts meeting or exceeding all primary electrical specifications with 60V breakdown voltage and 500mA or greater collector current capability.

Category B: Functional Alternatives (Reduced Specifications) Parts with reduced collector current or voltage ratings that may serve in applications with lower current or voltage demands, provided circuit design accommodates the reduced specifications.

Parameter Comparison

Part Number	Manufacturer	Vce(BR) Max (V)	Ic Max (mA)	Power Max (mW)	fT (MHz)	Package	Product Status
2SC5868TLR	Rohm Semiconductor	60	500	500	300	TSMT3	Not For New Designs
PBSS4160T,215	Nexperia USA Inc.	60	1000	400	220	TO-236AB	Active
ZXTN2031FTA	Diodes Incorporated	50	5000	1200	125	SOT-23-3	Active
BCV71	Fairchild Semiconductor	60	500	350	—	SOT-23-3	Active
MMBT3904-AU_R1_000A1	Panjit International Inc.	40	200	225	300	SOT-23	Active
MMBTA05LT1G	onsemi	60	500	225	100	SOT-23-3	Active
MMBTA05LT3G	onsemi	60	500	225	100	SOT-23-3	Active
PBSS4041NT,215	Nexperia USA Inc.	60	3800	1100	175	TO-236AB	Active
ZXTN2018FTA	Diodes Incorporated	60	5000	1200	130	SOT-23-3	Active
ZXTN25050DFHTA	Diodes Incorporated	50	4000	1250	200	SOT-23-3	Active
ZXTN25060BFHTA	Diodes Incorporated	60	3500	1250	185	SOT-23-3	Active

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

PBSS4160T,215 (Nexperia USA Inc.) and ZXTN2018FTA (Diodes Incorporated) are the preferred substitutes. Both parts are classified as Active products, ensuring long-term availability and supply chain stability. PBSS4160T,215 provides 1A collector current at 60V with 220MHz transition frequency, exceeding the 2SC5868TLR specifications. ZXTN2018FTA offers 5A collector current at 60V with 130MHz transition frequency and superior power handling at 1.2W. Both parts carry RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Secondary Substitutes (Electrical Equivalents):

MMBTA05LT1G and MMBTA05LT3G (onsemi) match the 2SC5868TLR electrical specifications exactly at 60V, 500mA, with Active product status and RoHS3 compliance. These parts are suitable for direct replacement in existing designs where the original TSMT3 package footprint can be adapted to SOT-23-3 mounting.

Functional Alternatives (Reduced Specifications):

MMBT3904-AU_R1_000A1 (Panjit International Inc.) operates at 40V and 200mA, suitable only for applications with reduced voltage and current requirements. This part includes AEC-Q101 automotive qualification, making it appropriate for automotive applications within its electrical limits.

Not Recommended:

ZXTN2031FTA operates at 50V maximum, below the 2SC5868TLR 60V specification. Use only in applications where 50V operation is acceptable.

Frequently Asked Questions (FAQ)

Q: Can PBSS4160T,215 directly replace 2SC5868TLR in all applications?

A: PBSS4160T,215 meets or exceeds all electrical specifications of the 2SC5868TLR. However, package compatibility must be verified. The 2SC5868TLR uses TSMT3 (SC-96) package while PBSS4160T,215 uses TO-236AB. Circuit board layout and assembly equipment must accommodate the different package footprint.

Q: What is the difference between MMBTA05LT1G and MMBTA05LT3G?

A: Both parts have identical electrical specifications. MMBTA05LT1G is supplied in Cut Tape (CT) & Digi-Reel packaging, while MMBTA05LT3G is supplied in Tape & Reel (TR) packaging. Selection depends on assembly process requirements and volume.

Q: Why is ZXTN2031FTA listed if it operates at 50V instead of 60V?

A: ZXTN2031FTA is included as a functional alternative for applications where 50V operation is acceptable. The part offers superior current handling (5A) and power dissipation (1.2W) compared to the 2SC5868TLR. Circuit design must confirm that 50V maximum voltage is sufficient for the intended application.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts carry RoHS3 compliance status, matching the 2SC5868TLR compliance level. All parts also maintain unlimited moisture sensitivity rating (MSL 1).

Q: Which substitute offers the best frequency performance?

A: The 2SC5868TLR operates at 300MHz transition frequency. PBSS4160T,215 provides 220MHz, ZXTN25060BFHTA provides 185MHz, and ZXTN2018FTA provides 130MHz. For applications requiring 300MHz operation, MMBT3904-AU_R1_000A1 matches this specification but operates at reduced voltage (40V) and current (200mA).

Q: Can PBSS4041NT,215 be used as a substitute?

A: PBSS4041NT,215 exceeds all 2SC5868TLR specifications with 3.8A collector current and 1.1W power dissipation at 60V. This part is suitable for applications requiring higher current handling. Package compatibility with TO-236AB must be verified against circuit board design.

Q: What is the significance of the "Not For New Designs" status of 2SC5868TLR?

A: This status indicates that Rohm Semiconductor recommends using alternative parts for new circuit development. However, the part remains available for legacy system support and maintenance. All listed substitute parts carry Active status, confirming ongoing manufacturer support and supply availability.

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