TIPL770-S Equivalent & Substitute Parts Reference

Part Overview

TIPL770-S is a Bourns Inc. bipolar (BJT) NPN transistor rated for 400 V, 2.5 A collector current, and 50 W power dissipation, provided in a TO-220 through-hole package. The detailed specification includes 12MHz transition frequency, maximum Vce saturation of 2.5V @ 500 mA, and minimum hFE of 20 @ 500 mA, 5 V. The TIPL770-S is currently designated as Obsolete, making the identification of suitable equivalent and substitute NPN bipolar transistors critical for continued support in existing designs and for inventory replenishment.

Key Parameters

Parameter	TIPL770-S Value	Notes
Transistor Type	NPN
Current - Collector (Ic) (Max)	2.5 A
Voltage - Collector Emitter Breakdown (Max)	400 V
Vce Saturation (Max) @ Ib, Ic	2.5V @ 500mA, 2.5A
Current - Collector Cutoff (Max)	5µA
DC Current Gain (hFE) (Min) @ Ic, Vce	20 @ 500mA, 5V
Power - Max	50 W
Frequency - Transition	12MHz
Operating Temperature	-65°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-220-3
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution is based strictly on matching the following key parameters as specified: transistor type (NPN), collector current rating, collector-emitter breakdown voltage, Vce saturation, DC current gain, maximum power, package type (TO-220-3), mounting type (through hole), operating temperature range, and RoHS compliance. Only transistors meeting or exceeding these criteria or falling within the allowable ranges, as listed in the input, are considered suitable as direct equivalents or substitutes.

Parameter Comparison

Parameter	TIPL770-S (Bourns Inc.)	BUL741 (STMicroelectronics)	BUX85G (onsemi)	TSC741CZ C0G (Taiwan Semiconductor)
Transistor Type	NPN	NPN	NPN	NPN
Current - Collector (Ic) (Max)	2.5 A	2.5 A	2 A	2.5 A
Voltage - Collector Emitter Breakdown (Max)	400 V	400 V	450 V	450 V
Vce Saturation (Max) @ Ib, Ic	2.5V @ 500mA, 2.5A	1.5V @ 600mA, 2A	1V @ 200mA, 1A	2V @ 600mA, 2A
Current - Collector Cutoff (Max)	5µA	250µA	200µA	250µA
DC Current Gain (hFE) (Min) @ Ic, Vce	20 @ 500mA, 5V	25 @ 450mA, 3V	30 @ 100mA, 5V	50 @ 100mA, 5V
Power - Max	50 W	60 W	50 W	60 W
Frequency - Transition	12MHz	-	4MHz	-
Operating Temperature	-65°C ~ 150°C (TJ)	150°C (TJ)	-65°C ~ 150°C (TJ)	150°C (TJ)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-3	TO-220-3	TO-220-3	TO-220-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

TIPL770-S is classified as Obsolete. Alternative selection is justified based on product status to ensure continued availability and support for designs utilizing this specification. Substitute parts BUL741, BUX85G, and TSC741CZ C0G are listed as Active and are ROHS3 Compliant. All substitute models have TO-220-3 through-hole packages, maintaining compatibility with the mounting and compliance requirements provided.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria for selecting substitute transistors for TIPL770-S?
Substitute selection is based on matching transistor type (NPN), collector current rating (Ic), collector-emitter breakdown voltage (Vce), saturation voltage, current gain (hFE), power dissipation, package type (TO-220-3), and RoHS compliance.

Q2: Are substitute parts compatible with the board layout designed for TIPL770-S?
All listed substitutes utilize the TO-220-3 through-hole package, supporting physical compatibility with layouts designed for TIPL770-S.

Q3: Does the operating temperature range of substitutes cover the same specification as TIPL770-S?
All substitutes listed provide a maximum junction temperature of 150°C and specified operating temperature ranges as provided.

Q4: Do substitute parts meet current RoHS standards?
All substitute parts are designated as ROHS3 Compliant.

Q5: Can higher breakdown voltage or current gain be selected in a substitute?
Substitute parts with specified breakdown voltages and current gains equal to or greater than the TIPL770-S parameters are listed and considered compatible as per the provided specifications.

Q6: Are the electrical parameters for cutoff current and power strictly matched?
Parameters listed are strictly as provided; substitutes meet or exceed the main specifications, ensuring interchangeability based on allowable ranges within this category.

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