BAT17,235 Equivalent & Substitute Parts

Part Overview

The BAT17,235 is an RF Schottky diode manufactured by Nexperia USA Inc., designed for high-frequency applications requiring low forward voltage drop and fast switching characteristics. This single-element Schottky diode operates at a peak reverse voltage of 4V with a maximum current rating of 30 mA and is packaged in the TO-236AB (SOT-23-3) form factor. The device maintains Active product status and carries AEC-Q100 automotive qualification, making it suitable for automotive and industrial RF applications. Equivalent and substitute parts are identified based on matching electrical performance parameters, package compatibility, and compliance certifications to ensure functional interchangeability in circuit designs.

Key Parameters

Parameter	BAT17,235
Diode Type	Schottky - Single
Voltage - Peak Reverse (Max)	4V
Current - Max	30 mA
Capacitance @ Vr, F	1pF @ 0V, 1MHz
Resistance @ If, F	15Ohm @ 5mA, 1kHz
Operating Temperature	100°C (TJ)
Package / Case	TO-236-3, SC-59, SOT-23-3
Product Status	Active
RoHS Status	ROHS3 Compliant
Grade	Automotive
Qualification	AEC-Q100

Substitute Part Grouping Explanation

Substitute parts for the BAT17,235 are identified based on the following criteria:

Direct Substitutes maintain identical or superior electrical performance within the same package form factor (TO-236-3/SOT-23-3). Substitution is valid when the following conditions are met:

Package compatibility: TO-236-3, SC-59, or SOT-23-3
Diode type: Schottky - Single
Peak reverse voltage rating equal to or greater than 4V
Current rating equal to or greater than 30 mA
Capacitance and resistance characteristics suitable for RF applications
RoHS3 compliance and equivalent environmental certifications

Similar Substitutes share the same base product number (BAT17) and electrical characteristics but may originate from different manufacturers. These parts maintain functional equivalence through matched voltage, current, and frequency response parameters.

Parameter Comparison

Parameter	BAT17,235 (Nexperia)	MMBD101LT1G (onsemi)	BAT17E6327HTSA1 (Infineon)
Diode Type	Schottky - Single	Schottky - Single	Schottky - Single
Voltage - Peak Reverse (Max)	4V	7V	4V
Current - Max	30 mA	-	130 mA
Capacitance @ Vr, F	1pF @ 0V, 1MHz	1pF @ 0V, 1MHz	0.75pF @ 0V, 1MHz
Resistance @ If, F	15Ohm @ 5mA, 1kHz	-	15Ohm @ 5mA, 10kHz
Power Dissipation (Max)	-	225 mW	150 mW
Operating Temperature	100°C (TJ)	150°C (TJ)	150°C (TJ)
Package / Case	TO-236-3, SOT-23-3	TO-236-3, SOT-23-3	TO-236-3, SOT-23-3
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

BAT17E6327HTSA1 (Infineon Technologies) is the primary equivalent substitute for the BAT17,235. Both devices share the same base product number (BAT17), identical peak reverse voltage rating (4V), matching capacitance characteristics (1pF @ 0V, 1MHz), and equivalent forward resistance (15Ohm @ 5mA). The Infineon variant provides superior current handling capability (130 mA versus 30 mA) and higher power dissipation rating (150 mW), enabling operation in more demanding RF applications while maintaining package compatibility and RoHS3 compliance. Operating temperature extends to 150°C, providing enhanced thermal margin.

MMBD101LT1G (onsemi) serves as an alternative substitute with higher voltage rating (7V) and greater power dissipation capability (225 mW). This device maintains identical capacitance performance and package compatibility but operates at elevated voltage margins suitable for applications requiring additional reverse voltage headroom. Operating temperature reaches 150°C. Current rating data is not specified for this device; verification against circuit requirements is necessary.

All substitute parts maintain Active product status, ROHS3 compliance, and TO-236-3/SOT-23-3 package compatibility, ensuring direct PCB-level interchangeability with the BAT17,235.

Frequently Asked Questions (FAQ)

Q: Can MMBD101LT1G replace BAT17,235 in all applications?

A: MMBD101LT1G provides package and diode-type compatibility with higher voltage rating (7V versus 4V) and greater power dissipation (225 mW). The higher voltage rating does not prevent substitution in 4V-rated circuits. However, maximum current rating is not specified for MMBD101LT1G; circuit current requirements must be verified against available onsemi documentation before selection.

Q: What is the primary advantage of BAT17E6327HTSA1 over the original BAT17,235?

A: BAT17E6327HTSA1 maintains identical voltage and capacitance specifications while providing four times the current rating (130 mA versus 30 mA) and higher power dissipation (150 mW). Operating temperature extends to 150°C compared to 100°C, offering improved thermal performance in high-frequency RF applications.

Q: Are all substitute parts automotive-qualified?

A: BAT17,235 carries AEC-Q100 automotive qualification. MMBD101LT1G and BAT17E6327HTSA1 are listed as Active products with ROHS3 compliance. Specific automotive qualification status for substitute parts should be verified through manufacturer datasheets if automotive-grade certification is a design requirement.

Q: Do package differences affect PCB layout?

A: All three parts use TO-236-3/SOT-23-3 packaging (SC-59). Pin configuration and footprint are identical, enabling direct PCB-level substitution without layout modification.

Q: What determines substitution validity for RF Schottky diodes?

A: Substitution validity is determined by matching diode type (Schottky - Single), package form factor (TO-236-3/SOT-23-3), peak reverse voltage rating (equal or greater), current rating (equal or greater), and frequency response characteristics (capacitance and resistance). All substitute parts meet these criteria for the BAT17,235.

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