B140HB-13 Schottky Diode Equivalent & Substitute Parts

Part Overview

The B140HB-13 is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 40 V DC reverse voltage and 1 A average rectified current in a surface mount SMB (DO-214AA) package. This component is classified as discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design requirements and production needs. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives with modified current ratings or electrical characteristics within the same package family.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	530 mV @ 1 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	100 µA @ 40 V	—
Capacitance @ Vr, F	80 pF @ 5V, 1MHz	—
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55°C ~ 150°C	—
RoHS Status	RoHS non-compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the B140HB-13 is determined by the following critical parameters: voltage rating (40 V DC reverse), package type (DO-214AA SMB surface mount), technology (Schottky), and mounting compatibility. Substitute parts are grouped into three categories based on current rating and electrical characteristics:

Category 1: Direct Parametric Equivalents (1 A Rating) Parts maintaining identical 1 A current rating and 40 V voltage specification. These parts are interchangeable in applications requiring the original 1 A specification.

Category 2: Higher Current Substitutes (2 A to 4 A Rating) Parts with elevated current ratings (2 A, 3 A, or 4 A) while maintaining 40 V voltage rating and DO-214AA SMB package. These parts provide increased current capacity for applications requiring higher current handling.

Category 3: Compliance and Packaging Variants Parts differentiated by RoHS compliance status, packaging format (Tape & Reel versus Cut Tape), and automotive qualification. All maintain core electrical specifications and package compatibility.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Reverse Leakage @ Vr [µA]	Package	Product Status	RoHS Status
B140HB-13	Diodes Incorporated	40	1	530 @ 1 A	100 @ 40 V	DO-214AA, SMB	Discontinued	Non-compliant
B140HB-13-F	Diodes Incorporated	40	1	530 @ 1 A	100 @ 40 V	DO-214AA, SMB	Active	ROHS3 Compliant
STPS1L40U	STMicroelectronics	40	1	500 @ 1 A	35 @ 40 V	DO-214AA, SMB	Active	ROHS3 Compliant
STPS1L40UY	STMicroelectronics	40	1	500 @ 1 A	35 @ 40 V	DO-214AA, SMB	Active	ROHS3 Compliant
STPS140U	STMicroelectronics	40	1	550 @ 1 A	12 @ 40 V	DO-214AA, SMB	Active	ROHS3 Compliant
STPS2L40U	STMicroelectronics	40	2	430 @ 2 A	220 @ 40 V	DO-214AA, SMB	Active	ROHS3 Compliant
STPS340U	STMicroelectronics	40	3	630 @ 3 A	20 @ 40 V	DO-214AA, SMB	Active	ROHS3 Compliant
STPS340UY	STMicroelectronics	40	3	630 @ 3 A	20 @ 40 V	DO-214AA, SMB	Active	ROHS3 Compliant
SK34B-LTP	Micro Commercial Co	40	3	500 @ 3 A	500 @ 40 V	DO-214AA, SMB	Active	ROHS3 Compliant
SK44BL-TP	Micro Commercial Co	40	4	450 @ 4 A	500 @ 40 V	DO-214AA, SMB	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (1 A Applications): The B140HB-13-F is the primary equivalent, manufactured by Diodes Incorporated with identical electrical specifications and DO-214AA SMB package. This part is active in production and ROHS3 compliant, addressing the RoHS non-compliance status of the original B140HB-13.

STMicroelectronics STPS1L40U and STPS1L40UY provide alternative 1 A solutions with improved reverse leakage characteristics (35 µA versus 100 µA) and lower forward voltage (500 mV versus 530 mV). STPS1L40UY includes automotive grade qualification and AEC-Q101 compliance for applications requiring automotive standards.

For Higher Current Applications (2 A to 4 A): STPS2L40U (2 A) offers improved forward voltage performance (430 mV @ 2 A) and is suitable for applications requiring increased current capacity within the same package footprint.

STPS340U and STPS340UY (3 A) provide 3 A current rating with STPS340UY offering automotive qualification. SK34B-LTP (Micro Commercial Co) provides an alternative 3 A source with different reverse leakage characteristics.

SK44BL-TP (4 A) represents the highest current capacity option in the DO-214AA SMB package, with the lowest forward voltage (450 mV @ 4 A) among all listed substitutes.

All substitute parts maintain 40 V voltage rating, DO-214AA SMB package compatibility, fast recovery Schottky technology, and surface mount configuration. All active parts are ROHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can B140HB-13-F be used as a direct replacement for B140HB-13? A: Yes. B140HB-13-F is a parametric equivalent with identical voltage (40 V), current (1 A), forward voltage (530 mV @ 1 A), and package specifications (DO-214AA SMB). The primary difference is product status (active versus discontinued) and RoHS compliance (ROHS3 compliant versus non-compliant).

Q: What is the difference between STPS1L40U and STPS1L40UY? A: Both parts maintain identical 40 V, 1 A specifications and DO-214AA SMB package. STPS1L40UY includes automotive grade qualification and AEC-Q101 certification with operating temperature range of -40°C to 150°C, compared to STPS1L40U which specifies 150°C maximum. STPS1L40UY is supplied in Tape & Reel packaging, while STPS1L40U is supplied in Cut Tape & Digi-Reel format.

Q: Can higher current rated parts (2 A, 3 A, 4 A) be used in place of the 1 A B140HB-13? A: Higher current rated parts are mechanically and electrically compatible in the DO-214AA SMB package and maintain 40 V voltage rating. However, application circuit design must accommodate the different forward voltage characteristics and reverse leakage specifications of higher current parts. STPS2L40U exhibits 430 mV forward voltage at 2 A, STPS340U/STPS340UY exhibit 630 mV at 3 A, and SK44BL-TP exhibits 450 mV at 4 A.

Q: Are all substitute parts RoHS compliant? A: All active substitute parts listed are ROHS3 compliant. The original B140HB-13 is RoHS non-compliant. B140HB-13-F provides RoHS3 compliance as a direct equivalent.

Q: What packaging formats are available for these substitute parts? A: Substitute parts are supplied in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel formats. B140HB-13-F, STPS1L40UY, SK34B-LTP, and SK44BL-TP are supplied in Tape & Reel. STPS1L40U, STPS140U, STPS2L40U, STPS340U, and STPS340UY are supplied in Cut Tape & Digi-Reel format. Packaging selection does not affect electrical or mechanical compatibility.

Q: Which substitute part has the lowest reverse leakage current? A: STPS140U exhibits the lowest reverse leakage at 12 µA @ 40 V, compared to the original B140HB-13 specification of 100 µA @ 40 V. STPS340U and STPS340UY also provide low reverse leakage at 20 µA @ 40 V.

Q: Are automotive-qualified alternatives available? A: Yes. STPS1L40UY and STPS340UY are automotive grade parts with AEC-Q101 qualification, suitable for automotive applications requiring specific reliability and qualification standards.

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