TIP31C-BP-HF Equivalent & Substitute Parts Reference

Part Overview

TIP31C-BP-HF is an active NPN Bipolar Junction Transistor (BJT) manufactured by Micro Commercial Co, categorized under Transistors, Bipolar (BJT). It features a 100 V collector-emitter breakdown voltage, 3 A maximum collector current, and a transition frequency of 3 MHz in a TO-220AB through-hole package. Finding alternative models is necessary to ensure continuous supply, maintain compatibility in production, or meet compliance and inventory requirements for designs using this part.

Key Parameters

Parameter	TIP31C-BP-HF
Transistor Type	NPN
Collector Current (Ic) Max	3 A
Collector-Emitter Breakdown Voltage (Vce Max)	100 V
Vce Saturation (Max) @ Ib, Ic	1.2V @ 375mA, 3A
Collector Cutoff Current (Max)	300µA
DC Current Gain (hFE)	25 @ 1A, 4V
Power (Max)	2 W
Transition Frequency	3MHz
Operating Temperature	-65°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-220-3
Supplier Device Package	TO-220AB
Part Status	Active

Substitute Part Grouping Explanation

Substitution is determined by matching key electrical and mechanical parameters, ensuring functional equivalence within the "Transistors, Bipolar (BJT)" category. Substitute parts must exhibit the same transistor type (NPN), collector current rating, collector-emitter breakdown voltage, Vce saturation performance, DC current gain, transition frequency, power rating, operating temperature range, mounting type, and compatible passives/package format. Only parameters explicitly provided are considered.

Parameter Comparison

Parameter	TIP31C-BP-HF (Micro Commercial Co)	TIP31CG (onsemi)
Transistor Type	NPN	NPN
Collector Current (Ic) Max	3 A	3 A
Collector-Emitter Breakdown Voltage (Vce Max)	100 V	100 V
Vce Saturation (Max) @ Ib, Ic	1.2V @ 375mA, 3A	1.2V @ 375mA, 3A
Collector Cutoff Current (Max)	300µA	300µA
DC Current Gain (hFE)	25 @ 1A, 4V	10 @ 3A, 4V
Power (Max)	2 W	2 W
Transition Frequency	3MHz	3MHz
Operating Temperature	-65°C ~ 150°C (TJ)	-65°C ~ 150°C (TJ)
Mounting Type	Through Hole	Through Hole
Package / Case	TO-220-3	TO-220-3
Supplier Device Package	TO-220AB	TO-220
Part Status	Active	Active

Engineering Selection Recommendations

Both TIP31C-BP-HF and TIP31CG are listed as "Active" parts, suitable for production use. TIP31CG features ROHS3 compliance, Not Applicable MSL, and REACH Unaffected status. TIP31C-BP-HF is REACH Unaffected. Selection between these parts may be based on required compliance documentation and inventory levels as specified.

Frequently Asked Questions (FAQ)

Q1: What are the critical parameters required for substituting TIP31C-BP-HF?
A1: The critical parameters are transistor type (NPN), collector current rating, collector-emitter breakdown voltage, Vce saturation, DC current gain, maximum power dissipation, transition frequency, operating temperature range, mounting type, and package compatibility.

Q2: Are TIP31C-BP-HF and TIP31CG mechanically interchangeable?
A2: Both have a TO-220-3 through-hole package. TIP31C-BP-HF is specified as TO-220AB; TIP31CG as TO-220. Compatibility is based on provided package format.

Q3: Is DC current gain (hFE) a limiting factor in substitution?
A3: Both parts list DC current gain; TIP31C-BP-HF specifies 25 @ 1A, 4V and TIP31CG specifies 10 @ 3A, 4V. Substitution should ensure application requirements fall within specified hFE values.

Q4: Are compliance and regulatory certifications relevant to substitution?
A4: Regulatory compliance such as ROHS3 and REACH status are provided. Selection may incorporate these certifications based on application requirements.

Q5: Can these parts be used in the same PCB footprint?
A5: Both parts are specified for through-hole mounting in a TO-220-3 case, supporting footprint compatibility within the provided parameters.

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