CJD127 TR13 Equivalent & Substitute Parts

Part Overview

The CJD127 TR13 is a PNP Darlington bipolar junction transistor manufactured by Central Semiconductor Corp, designed for surface mount applications in the DPAK package. This component operates at 100 V collector-emitter breakdown voltage with a maximum collector current of 8 A and maximum power dissipation of 1.75 W.

The CJD127 TR13 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications utilizing this transistor topology.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP - Darlington	—
Current - Collector (Ic) (Max)	8	A
Voltage - Collector Emitter Breakdown (Max)	100	V
Vce Saturation (Max) @ Ib, Ic	4 V @ 80 mA, 8 A	—
Current - Collector Cutoff (Max)	10	µA
DC Current Gain (hFE) (Min) @ Ic, Vce	1000 @ 4 A, 4 V	—
Power - Max	1.75	W
Frequency - Transition	4	MHz
Operating Temperature Range	-65 to 150	°C (TJ)
Mounting Type	Surface Mount	—
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—
REACH Status	REACH Unaffected	—

Substitute Part Grouping Explanation

Substitution of the CJD127 TR13 is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

Transistor topology: PNP - Darlington configuration
Maximum collector current: 8 A
Collector-emitter breakdown voltage: 100 V
Saturation voltage: 4 V @ 80 mA, 8 A
DC current gain (hFE): minimum 1000 @ 4 A, 4 V
Maximum power dissipation: 1.75 W
Transition frequency: 4 MHz
Collector cutoff current: 10 µA maximum

Mechanical & Environmental Parameters:

Package type: DPAK (TO-252-3, SC-63)
Mounting: Surface Mount
Operating temperature range: -65°C to 150°C (TJ)
Moisture sensitivity: MSL 1 (Unlimited)

Compliance Parameters:

RoHS3 Compliance
REACH Unaffected status

Substitute parts must match all electrical specifications, maintain identical package geometry, and satisfy all regulatory compliance requirements.

Parameter Comparison

Parameter	CJD127 TR13 (Central Semiconductor)	MJD127T4G (onsemi)	Match Status
Transistor Type	PNP - Darlington	PNP - Darlington	Equivalent
Current - Collector (Ic) (Max)	8 A	8 A	Equivalent
Voltage - Collector Emitter Breakdown (Max)	100 V	100 V	Equivalent
Vce Saturation (Max) @ Ib, Ic	4 V @ 80 mA, 8 A	4 V @ 80 mA, 8 A	Equivalent
Current - Collector Cutoff (Max)	10 µA	10 µA	Equivalent
DC Current Gain (hFE) (Min) @ Ic, Vce	1000 @ 4 A, 4 V	1000 @ 4 A, 4 V	Equivalent
Power - Max	1.75 W	1.75 W	Equivalent
Frequency - Transition	4 MHz	4 MHz	Equivalent
Operating Temperature Range	-65 to 150°C (TJ)	-65 to 150°C (TJ)	Equivalent
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent
Product Status	Obsolete	Active	Substitute is active

Engineering Selection Recommendations

The MJD127T4G manufactured by onsemi is a direct parametric equivalent to the CJD127 TR13. All electrical characteristics, mechanical specifications, and environmental operating parameters are identical.

Supply Availability: The MJD127T4G is classified as an active product with 37,410 units in stock, compared to the CJD127 TR13 which is obsolete with limited remaining inventory (980 units). Selection of the MJD127T4G ensures long-term supply chain continuity.

Regulatory Compliance: Both components satisfy ROHS3 compliance and REACH unaffected status, maintaining full regulatory alignment for applications subject to these requirements.

Package Compatibility: Both parts utilize the identical DPAK (TO-252-3, SC-63) surface mount package, enabling direct board-level substitution without PCB redesign.

Moisture Sensitivity: Both components carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity constraints during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the MJD127T4G be used as a direct replacement for the CJD127 TR13?

A: Yes. The MJD127T4G is a parametric equivalent with identical electrical specifications, package geometry, and environmental operating range. Direct substitution is supported without circuit modification.

Q: Are there any differences in the DPAK package between these two parts?

A: No. Both components use the TO-252-3 DPAK package (SC-63) with identical pin configuration and mechanical dimensions. PCB footprints are interchangeable.

Q: What is the primary advantage of selecting the MJD127T4G over the CJD127 TR13?

A: The MJD127T4G is an active product with robust supply availability (37,410 units in stock), whereas the CJD127 TR13 is obsolete. The onsemi part ensures supply chain reliability and supports long-term production requirements.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the CJD127 TR13 and MJD127T4G are ROHS3 compliant and REACH unaffected, satisfying identical regulatory requirements.

Q: Is there any difference in the DC current gain (hFE) specification?

A: No. Both parts specify a minimum DC current gain of 1000 @ 4 A, 4 V, ensuring identical amplification characteristics in Darlington configuration.

Q: Can these parts be used interchangeably in high-temperature applications?

A: Yes. Both components operate across the identical temperature range of -65°C to 150°C (TJ), supporting equivalent thermal performance in extreme environment applications.

Q: What is the moisture sensitivity classification for both parts?

A: Both parts carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity constraints. Standard handling and storage procedures apply without special desiccant requirements.

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