TIP42B PBFREE Equivalent & Substitute Parts

Part Overview

The TIP42B PBFREE is a PNP bipolar junction transistor manufactured by Central Semiconductor Corp, rated for 80 V collector-emitter breakdown voltage and 6 A maximum collector current. This device is packaged in TO-220-3 through-hole configuration and is designed for general-purpose switching and amplification applications. The product status is listed as Obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs.

Substiute Parts

TIP42B PBFREE

Central Semiconductor CorpIn Stock: 1055TIP42B PBFREE Datasheet

Current PartRFQ

TIP42BG

onsemiIn Stock: 2140TIP42BG Datasheet

MFR RecommendedRFQ

TIP42G

onsemiIn Stock: 3248TIP42G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TIP42B PBFREE is determined by strict electrical and mechanical parameter compatibility. The following criteria establish valid substitute relationships:

Primary Substitution Criteria:

• Transistor Type: PNP (required match)
• Package / Case: TO-220-3 (required match for mechanical compatibility)
• Mounting Type: Through Hole (required match)
• Current - Collector (Ic) Max: 6 A (required match)
• Voltage - Collector Emitter Breakdown (Max): 80 V minimum (equal or greater)
• Vce Saturation: 1.5 V @ 600 mA, 6 A (required match)
• Operating Temperature Range: -65°C to 150°C (required match)
• RoHS Status: ROHS3 Compliant (required match)

Secondary Parameters (allowable variation):

• Current - Collector Cutoff (Max): variation permitted within application tolerance
• DC Current Gain (hFE): variation permitted if minimum specification meets circuit requirements
• Power - Max: equal or greater rating acceptable
• Frequency - Transition: equal or greater rating acceptable

Substitute parts identified are TIP42BG and TIP42G, both manufactured by onsemi. These parts share the base product number TIP42 and meet the primary substitution criteria with documented compatibility.

Parameter Comparison

Engineering Selection Recommendations

TIP42BG (onsemi): This part is the primary recommended substitute for TIP42B PBFREE. It maintains identical electrical specifications for collector current (6 A), collector-emitter breakdown voltage (80 V), saturation voltage (1.5 V @ 600 mA, 6 A), transition frequency (3 MHz), and operating temperature range (-65°C to 150°C). Both parts are ROHS3 Compliant and REACH Unaffected. The TIP42BG is currently in Last Time Buy status with 2100 units in stock, providing procurement availability. The TO-220-3 package and through-hole mounting type are identical, ensuring direct mechanical compatibility.

TIP42G (onsemi): This part is a secondary substitute option with the following consideration: the collector-emitter breakdown voltage is rated at 40 V, which is lower than the TIP42B PBFREE specification of 80 V. The TIP42G is suitable only for applications where the maximum operating voltage does not exceed 40 V. All other electrical parameters match the primary part: 6 A collector current, 1.5 V saturation voltage, 3 MHz transition frequency, and -65°C to 150°C operating temperature. The TIP42G is in Last Time Buy status with 3154 units in stock. Package and mounting type are identical.

Both substitute parts are manufactured by onsemi, a recognized semiconductor manufacturer, and carry equivalent compliance certifications to the original part.

Frequently Asked Questions (FAQ)

Q: Can TIP42BG be used as a direct replacement for TIP42B PBFREE?

A: Yes. The TIP42BG maintains all critical electrical specifications: 6 A collector current, 80 V collector-emitter breakdown voltage, 1.5 V saturation voltage at rated current, 3 MHz transition frequency, and -65°C to 150°C operating temperature range. The TO-220-3 package and through-hole mounting are identical. Both parts are ROHS3 Compliant and REACH Unaffected.

Q: What is the key difference between TIP42BG and TIP42G?

A: The primary difference is the collector-emitter breakdown voltage rating. TIP42BG is rated for 80 V, matching the TIP42B PBFREE specification. TIP42G is rated for 40 V. All other electrical parameters are identical. TIP42G is suitable only for applications with maximum operating voltages not exceeding 40 V.

Q: Are the packages identical between all three parts?

A: Yes. All three parts—TIP42B PBFREE, TIP42BG, and TIP42G—use the TO-220-3 package with through-hole mounting. No PCB layout modifications are required for substitution.

Q: What is the significance of the "Last Time Buy" status for TIP42BG and TIP42G?

A: Last Time Buy status indicates that these parts are in the final phase of production availability. Procurement should be planned accordingly, as future availability may be limited.

Q: Are there compliance differences between the main part and substitutes?

A: No. All three parts are ROHS3 Compliant and REACH Unaffected, with identical ECCN (EAR99) and HTSUS (8541.29.0095) classifications.

Q: Can TIP42G be used in all applications designed for TIP42B PBFREE?

A: No. TIP42G is suitable only for applications where the maximum collector-emitter voltage does not exceed 40 V. Applications requiring 80 V operation must use TIP42BG.