APT34F100B2 Equivalent & Substitute Parts Reference

Part Overview

The APT34F100B2 from Microchip Technology is an N-channel MOSFET rated for 1000V drain-to-source voltage and 35A continuous drain current (Tc). It is housed in a TO-247-3 variant (T-MAX™ [B2]) through-hole package and is part of the POWER MOS 8™ series. The device is actively produced and RoHS3 compliant.

Sourcing substitute MOSFETs is necessary for supply-chain resilience, cost management, or ensuring uninterrupted production when primary inventory depletes or long lead times occur. Substitute parts must precisely match key electrical and mechanical parameters to guarantee functional equivalency and compatibility within the application.

Key Parameters

Parameter	APT34F100B2
Manufacturer	Microchip Technology
Category	Transistors, FETs, MOSFETs
FET Type	N-Channel
Technology	MOSFET (Metal Oxide)
Drain to Source Voltage (Vdss)	1000 V
Current - Continuous Drain (Id) @ 25°C	35A (Tc)
Drive Voltage (Max Rds On, Min Rds On)	10V
Rds On (Max) @ Id, Vgs	380mOhm @ 18A, 10V
Vgs(th) (Max) @ Id	5V @ 2.5mA
Gate Charge (Qg) (Max) @ Vgs	305 nC @ 10 V
Vgs (Max)	±30V
Input Capacitance (Ciss) (Max) @ Vds	9835 pF @ 25 V
Power Dissipation (Max)	1135W (Tc)
Operating Temperature	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole
Supplier Device Package	T-MAX™ [B2]
Package / Case	TO-247-3 Variant
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
Product Status	Active

Substitute Part Grouping Explanation

Substitution is determined by comparing only the explicitly listed electrical and mechanical parameters relevant to the N-channel MOSFET product category. Substitutes are grouped by matching these key attributes:

Category: Transistors, FETs, MOSFETs
FET Type: N-Channel
Technology: MOSFET (Metal Oxide)
Drain to Source Voltage (Vdss)
Continuous Drain Current (Id) @ 25°C
Rds On (Max) value
Drive and Gate Voltage specifications
Input Capacitance and Gate Charge
Power Dissipation (Max)
Operating Temperature Range
Package and Mounting Type
RoHS/REACH/Compliance Status
Moisture Sensitivity Level (MSL)

Any suggested substitute is listed only if these criteria are available and can be directly cross-referenced.

Parameter Comparison

Parameter	APT34F100B2 (Microchip Technology)	STW22N95K5 (STMicroelectronics)
Category	Transistors, FETs, MOSFETs	Transistors, FETs, MOSFETs
FET Type	N-Channel	N-Channel
Technology	MOSFET (Metal Oxide)	MOSFET (Metal Oxide)
Drain to Source Voltage (Vdss)	1000 V	950 V
Current - Continuous Drain (Id) @ 25°C	35A (Tc)	17.5A (Tc)
Drive Voltage (Max Rds On, Min Rds On)	10V	10V
Rds On (Max) @ Id, Vgs	380mOhm @ 18A, 10V	330mOhm @ 9A, 10V
Vgs(th) (Max) @ Id	5V @ 2.5mA	5V @ 100µA
Gate Charge (Qg) (Max) @ Vgs	305 nC @ 10 V	48 nC @ 10 V
Vgs (Max)	±30V	±30V
Input Capacitance (Ciss) (Max) @ Vds	9835 pF @ 25 V	1550 pF @ 100 V
Power Dissipation (Max)	1135W (Tc)	250W (Tc)
Operating Temperature	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole	Through Hole
Supplier Device Package	T-MAX™ [B2]	TO-247-3
Package / Case	TO-247-3 Variant	TO-247-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Active	Active

Engineering Selection Recommendations

Both APT34F100B2 (Microchip Technology) and STW22N95K5 (STMicroelectronics) are classified as active products with ROHS3 compliance and REACH unaffected status. Each offers unlimited moisture sensitivity (MSL 1) for storage and assembly resilience. Selection between these should consider only the explicitly listed compliance certificates and product status as specified in the data above.

Frequently Asked Questions (FAQ)

Q1: What are the most important criteria to consider when selecting a substitute for APT34F100B2?
A1: Substitute selection must be strictly based on electrical parameters (type, Vdss, Id, Rds On, Vgs(th), power dissipation), package compatibility, and compliance (RoHS, REACH, MSL, product status).

Q2: Are STMicroelectronics STW22N95K5 and Microchip Technology APT34F100B2 pin-to-pin compatible?
A2: Both use a TO-247-3 based through-hole package, supporting physical interchange with respect to the provided details.

Q3: Do both parts meet the same environmental and certification levels?
A3: Both APT34F100B2 and STW22N95K5 are ROHS3 compliant, REACH unaffected, and have a moisture sensitivity level of 1 (unlimited).

Q4: Is it necessary to match drive voltage and Vgs(max) for substitution?
A4: Yes. Both APT34F100B2 and STW22N95K5 have the same drive voltage (10V) and maximum gate-source voltage (±30V) according to the provided data.

Q5: Are there significant differences in current handling or power dissipation?
A5: The parts differ in continuous current and power dissipation values as per the input parameters; confirm suitability where these figures are critical to the application, strictly using only input data.

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