MBRF1635HE3/45 Equivalent & Substitute Parts

Part Overview

The MBRF1635HE3/45 is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 35 V DC reverse voltage and 16 A average rectified current. The device features a through-hole ITO-220AC package with an isolated tab and is classified as a fast recovery diode with switching speed ≤ 500 ns. This component is actively produced and ROHS3 compliant, making it suitable for power conversion and rectification applications requiring low forward voltage drop and rapid switching characteristics.

Equivalent and substitute parts are identified when design requirements permit tolerance in voltage rating, current capacity, or package configuration while maintaining functional compatibility in the target application circuit.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	35	V
Current - Average Rectified (Io)	16	A
Voltage - Forward (Vf) (Max) @ If	630 mV @ 16 A	mV
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	ns
Current - Reverse Leakage @ Vr	200	µA @ 35 V
Mounting Type	Through Hole	—
Package / Case	TO-220-2 Full Pack, Isolated Tab	—
Operating Temperature - Junction	-65 to 150	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the MBRF1635HE3/45 are classified into two categories based on substitution criteria:

Parametric Equivalent (Direct Substitute): Parts that maintain identical electrical specifications and package configuration. The MBRF1635-E3/45 qualifies as a parametric equivalent, differing only in packaging format (tube versus full pack). This part shares all critical electrical parameters: 35 V reverse voltage rating, 16 A average rectified current, 630 mV forward voltage drop at 16 A, fast recovery speed ≤ 500 ns, and identical thermal operating range (-65°C to 150°C). The through-hole ITO-220AC package remains unchanged, ensuring mechanical and thermal compatibility.

Manufacturer Recommended Substitute (Functional Alternative): The STPS1545FP from STMicroelectronics functions as an alternative where circuit design permits higher voltage and current ratings. This part operates at 45 V reverse voltage (versus 35 V) and 15 A average rectified current (versus 16 A). The forward voltage specification differs at 840 mV @ 30 A, and maximum junction temperature extends to 175°C. The TO-220FPAC package maintains through-hole mounting compatibility but uses a different isolated tab configuration. Selection of this substitute requires verification that the application circuit can accommodate the higher voltage rating and accepts the modified forward voltage characteristics.

Parameter Comparison

Parameter	MBRF1635HE3/45	MBRF1635-E3/45	STPS1545FP
Manufacturer	Vishay General Semiconductor	Vishay General Semiconductor	STMicroelectronics
Voltage - DC Reverse (Vr) (Max)	35 V	35 V	45 V
Current - Average Rectified (Io)	16 A	16 A	15 A
Voltage - Forward (Vf) (Max) @ If	630 mV @ 16 A	630 mV @ 16 A	840 mV @ 30 A
Speed	Fast Recovery ≤ 500 ns	Fast Recovery ≤ 500 ns	Fast Recovery ≤ 500 ns
Current - Reverse Leakage @ Vr	200 µA @ 35 V	200 µA @ 35 V	200 µA @ 45 V
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-2 Full Pack, Isolated Tab	TO-220-2 Full Pack, Isolated Tab	TO-220-2 Full Pack
Operating Temperature - Junction (Max)	150°C	150°C	175°C
Technology	Schottky	Schottky	Schottky
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

MBRF1635-E3/45 Selection: This part is the preferred direct substitute for the MBRF1635HE3/45. Both components are manufactured by Vishay General Semiconductor and maintain identical electrical specifications across all critical parameters: reverse voltage, average rectified current, forward voltage drop, switching speed, and reverse leakage current. The only difference is packaging format (tube versus full pack). Both parts are ROHS3 compliant, carry unlimited moisture sensitivity level (MSL 1), and are classified as REACH unaffected. This substitute provides equivalent performance with no circuit redesign required.

STPS1545FP Selection: This STMicroelectronics component functions as an alternative when circuit design accommodates higher voltage and temperature ratings. The 45 V reverse voltage rating provides additional margin above the 35 V specification of the primary part. The 15 A average rectified current is marginally lower than the 16 A rating, requiring confirmation that application current demands do not exceed 15 A. The extended maximum junction temperature (175°C versus 150°C) offers thermal design flexibility. The forward voltage specification at 840 mV @ 30 A differs from the primary part's 630 mV @ 16 A, necessitating power dissipation analysis to confirm thermal compatibility. This substitute is ROHS3 compliant and carries identical compliance certifications. Selection requires explicit circuit validation.

Frequently Asked Questions (FAQ)

Q: Can MBRF1635-E3/45 be used as a direct replacement for MBRF1635HE3/45?

A: Yes. The MBRF1635-E3/45 is a parametric equivalent with identical electrical specifications and package configuration. The only difference is packaging format (tube versus full pack). No circuit modifications are required.

Q: What are the key differences between MBRF1635HE3/45 and STPS1545FP?

A: The STPS1545FP has a higher reverse voltage rating (45 V versus 35 V), slightly lower average rectified current (15 A versus 16 A), higher forward voltage drop (840 mV @ 30 A versus 630 mV @ 16 A), and extended maximum junction temperature (175°C versus 150°C). These differences require circuit validation before substitution.

Q: Is the STPS1545FP suitable for all applications using MBRF1635HE3/45?

A: No. The STPS1545FP is a functional alternative, not a direct equivalent. Applications must confirm that the circuit can operate with 15 A maximum current (not 16 A), accepts the higher forward voltage drop, and does not require the specific 35 V voltage rating. Higher voltage ratings do not automatically ensure compatibility in all designs.

Q: Are all three parts through-hole mounted?

A: Yes. MBRF1635HE3/45, MBRF1635-E3/45, and STPS1545FP all use through-hole mounting. MBRF1635HE3/45 and MBRF1635-E3/45 use ITO-220AC packages with isolated tabs. STPS1545FP uses a TO-220FPAC package with a different isolated tab configuration. Physical mounting compatibility must be confirmed for the STPS1545FP.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. MBRF1635HE3/45, MBRF1635-E3/45, and STPS1545FP are all ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. All three parts carry MSL 1 (unlimited moisture sensitivity level).

Q: What is the primary reason to select MBRF1635-E3/45 over MBRF1635HE3/45?

A: Inventory availability and packaging preference. MBRF1635-E3/45 is available in tube packaging with higher stock levels (2058 pcs versus 900 pcs). If full pack packaging is not required, this substitute offers equivalent performance with better supply availability.

Q: Can STPS1545FP be used in a circuit designed for 16 A operation?

A: No. STPS1545FP is rated for 15 A average rectified current. Circuits requiring 16 A operation must use MBRF1635HE3/45 or MBRF1635-E3/45. Operating above the rated current specification voids component reliability.

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