TR136 Equivalent & Substitute Parts

Part Overview

The TR136 is an NPN bipolar junction transistor manufactured by STMicroelectronics, rated for 400 V collector-emitter breakdown voltage and 3 A maximum collector current in a Through Hole TO-220-3 package. This device is designed for general-purpose switching and amplification applications requiring moderate voltage and current handling capabilities. The TR136 maintains Active product status and is RoHS3 compliant. Substitute parts are identified to provide alternatives when the primary device is unavailable or when application requirements necessitate enhanced performance specifications within compatible electrical and mechanical parameters.

Substiute Parts

TR136

STMicroelectronicsIn Stock: 784TR136 Datasheet

Current PartRFQ

STL128D

STMicroelectronicsIn Stock: 3688STL128D Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TR136 are identified based on strict electrical and mechanical compatibility criteria. The primary substitution logic is based on the following parameters:

Electrical Compatibility Requirements:

• Transistor Type: NPN (identical)
• Voltage - Collector Emitter Breakdown (Max): 400 V (equal or greater)
• Current - Collector (Ic) (Max): Equal to or greater than 3 A
• Power - Max: Equal to or greater than 60 W
• DC Current Gain (hFE) (Min): Equal to or greater than 10 @ 2A, 5V
• Operating Temperature: 150°C (TJ) or higher

Mechanical Compatibility Requirements:

• Package / Case: TO-220-3 (identical)
• Mounting Type: Through Hole (identical)

Compliance Requirements:

• RoHS Status: ROHS3 Compliant (identical)
• Product Status: Active (identical)

The STL128D meets all substitution criteria and is classified as a direct substitute for the TR136.

Parameter Comparison

Engineering Selection Recommendations

TR136 Selection Criteria: The TR136 is appropriate for applications requiring 3 A maximum collector current at 400 V breakdown voltage with 60 W power dissipation. This device is suitable for general-purpose switching applications in the specified current and voltage range. The TR136 maintains Active product status and full RoHS3 compliance, ensuring continued availability and regulatory conformance.

STL128D Selection Criteria: The STL128D is a direct substitute offering enhanced electrical performance specifications. The device provides 4 A maximum collector current (33% higher than TR136) and 65 W power dissipation (8% higher than TR136), while maintaining identical voltage rating, package configuration, and compliance certifications. The STL128D exhibits lower Vce saturation characteristics (0.5 V versus 1 V), resulting in reduced power loss during saturation operation. Both devices share identical DC current gain specifications and operating temperature ratings. The STL128D is suitable for applications where the TR136 is unavailable or where enhanced current handling and reduced saturation losses provide system-level benefits. Both devices maintain Active product status and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can the STL128D directly replace the TR136 in existing circuit designs?

A: Yes. The STL128D is electrically and mechanically compatible with the TR136. Both devices feature identical TO-220-3 package configuration, 400 V breakdown voltage rating, and 150°C maximum operating temperature. The STL128D provides equal or superior performance across all critical parameters, including collector current (4 A versus 3 A), power dissipation (65 W versus 60 W), and saturation voltage characteristics.

Q: What are the key differences between the TR136 and STL128D?

A: The primary differences are collector current rating (STL128D: 4 A versus TR136: 3 A), maximum power dissipation (STL128D: 65 W versus TR136: 60 W), and Vce saturation voltage (STL128D: 0.5 V versus TR136: 1 V). Both devices maintain identical voltage ratings, package types, and compliance certifications.

Q: Are both devices available in the same packaging format?

A: Yes. Both the TR136 and STL128D are supplied in Through Hole TO-220-3 packages. The mechanical footprint and pin configuration are identical, enabling direct board-level substitution without layout modifications.

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

A: Yes. Both the TR136 and STL128D are RoHS3 compliant and maintain Active product status. Both devices are REACH unaffected and classified under ECCN EAR99 with identical HTSUS coding (8541.29.0095).

Q: What is the moisture sensitivity level for these devices?

A: Both the TR136 and STL128D carry Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements.

Q: Can the TR136 be used in applications designed for the STL128D?

A: The TR136 can be used in applications designed for the STL128D only if the circuit design accommodates the lower current rating (3 A versus 4 A) and higher saturation voltage (1 V versus 0.5 V). Circuit analysis is required to confirm compatibility with specific application requirements.