B140AE-13 Equivalent & Substitute Parts

Part Overview

The B140AE-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 SMA (DO-214AC) package. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design and procurement requirements. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives with modified ratings suitable for the same application circuit topology.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 1 A	mV
Current - Reverse Leakage @ Vr	200	µA @ 40 V
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Capacitance @ Vr, F	50	pF @ 4V, 1MHz
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the B140AE-13 is determined by the following critical parameters: voltage rating (Vr), current rating (Io), forward voltage drop (Vf), reverse leakage current, package type (DO-214AC/SMA), and mounting configuration (surface mount). Parts are grouped into three categories:

Direct Manufacturer Equivalent (Same Base Product Number): Parts sharing the B140 base product number with identical voltage and current ratings, including B140A-13 from Diodes Incorporated.

Manufacturer Recommended Substitutes (Voltage and Package Compatible): Parts with matching 40 V reverse voltage rating and DO-214AC/SMA package, including B140-E3/61T (Vishay, 1 A), B340A-E3/5AT (Vishay, 3 A), and SS24S-M3/5AT (Vishay, 2 A). These maintain electrical compatibility while offering higher current capacity where circuit design permits.

Parametric Equivalents (Identical Electrical Specifications): Parts with matching 40 V, 1 A ratings and identical forward voltage characteristics, including SS14-AU_R1_000A1, SS14_R1_00001, and SS14W_R1_00001 from Panjit International Inc., which provide functional equivalence with automotive qualification available.

Cross-Manufacturer Alternative (Higher Voltage Rating): The SS14 from SMC Diode Solutions provides 100 V reverse voltage rating with 1 A current in the same SMA package, suitable for applications requiring enhanced voltage margin.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [mV]	Ir @ Vr [µA]	Package	Product Status	Inventory [Pcs]
B140AE-13	Diodes Incorporated	40	1	500 @ 1A	200 @ 40V	DO-214AC, SMA	Obsolete	1129
B140A-13	Diodes Incorporated	40	1	—	—	DO-214AC, SMA	Active	982
B140-E3/61T	Vishay General Semiconductor	40	1	520 @ 1A	200 @ 40V	DO-214AC, SMA	Active	23400
B340A-E3/5AT	Vishay General Semiconductor	40	3	550 @ 3A	500 @ 40V	DO-214AC, SMA	Active	23480
SS14	SMC Diode Solutions	100	1	850 @ 1A	500 @ 100V	DO-214AC, SMA	Active	230179
SS24S-M3/5AT	Vishay General Semiconductor	40	2	550 @ 2A	200 @ 40V	DO-214AC, SMA	Active	42288
SS14-AU_R1_000A1	Panjit International Inc.	40	1	500 @ 1A	200 @ 40V	DO-214AC, SMA	Active	1615
SS14_R1_00001	Panjit International Inc.	40	1	500 @ 1A	200 @ 40V	DO-214AC, SMA	Active	137160
SS14W_R1_00001	Panjit International Inc.	40	1	500 @ 1A	500 @ 40V	DO-214AC, SMA	Active	10400

Engineering Selection Recommendations

Primary Selection: B140A-13 (Diodes Incorporated) is the direct equivalent from the same manufacturer with active product status and ROHS3 compliance. This part maintains identical electrical specifications and package configuration with 982 units in stock.

Secondary Selection: B140-E3/61T (Vishay General Semiconductor) provides manufacturer-recommended equivalence with 40 V, 1 A ratings in the same DO-214AC/SMA package. This part offers superior inventory availability (23,400 units) and active product status. Forward voltage is specified at 520 mV versus 500 mV, representing a 4% increase within acceptable design margins for most rectifier applications.

Higher Current Capacity Alternative: B340A-E3/5AT (Vishay General Semiconductor) maintains 40 V reverse voltage with increased 3 A current rating. This part is suitable for applications requiring higher current capacity while maintaining the same voltage specification and package footprint. Reverse leakage increases to 500 µA at 40 V.

Intermediate Current Alternative: SS24S-M3/5AT (Vishay General Semiconductor) provides 40 V, 2 A rating with 200 µA reverse leakage, offering a middle-ground option between 1 A and 3 A requirements.

Parametric Equivalent with Automotive Qualification: SS14-AU_R1_000A1 (Panjit International Inc.) matches all electrical specifications (40 V, 1 A, 500 mV Vf, 200 µA Ir) and includes AEC-Q101 automotive qualification. This part is suitable for automotive and high-reliability applications.

High-Volume Parametric Equivalent: SS14_R1_00001 (Panjit International Inc.) provides identical 40 V, 1 A specifications with 137,160 units in stock, offering maximum availability for high-volume production requirements.

Enhanced Voltage Margin Option: SS14 (SMC Diode Solutions) provides 100 V reverse voltage rating with 1 A current in the same SMA package. This part is suitable for applications requiring additional voltage margin or operating in higher voltage environments. Forward voltage increases to 850 mV at 1 A, representing a 70% increase that must be evaluated against thermal and efficiency requirements.

All recommended parts maintain ROHS3 compliance, surface mount DO-214AC/SMA package compatibility, and fast recovery Schottky technology specifications.

Frequently Asked Questions (FAQ)

Q: Can B140A-13 directly replace B140AE-13 in production?

A: Yes. B140A-13 is a direct equivalent from Diodes Incorporated with identical 40 V, 1 A specifications, DO-214AC/SMA package, and active product status. The primary difference is product status transition from obsolete to active.

Q: What is the difference between B140-E3/61T and B140AE-13?

A: Both parts share identical 40 V reverse voltage, 1 A current rating, and DO-214AC/SMA package. B140-E3/61T is manufactured by Vishay General Semiconductor with forward voltage specified at 520 mV versus 500 mV for the B140AE-13. This 20 mV difference represents approximately 4% and is within acceptable design margins for rectifier applications. B140-E3/61T offers superior inventory availability and active product status.

Q: When should B340A-E3/5AT be selected instead of B140-E3/61T?

A: B340A-E3/5AT should be selected when circuit design requires current capacity exceeding 1 A. This part provides 3 A average rectified current while maintaining 40 V reverse voltage rating and DO-214AC/SMA package compatibility. Reverse leakage current increases to 500 µA at 40 V, which must be evaluated against circuit requirements.

Q: Is SS14 compatible with B140AE-13 applications?

A: SS14 is package-compatible (DO-214AC/SMA) and current-compatible (1 A) but provides 100 V reverse voltage rating versus 40 V. This higher voltage rating introduces a 70% increase in forward voltage drop (850 mV versus 500 mV), which affects thermal performance and efficiency. SS14 is suitable for applications requiring enhanced voltage margin or operating in higher voltage environments where the increased forward voltage drop is acceptable.

Q: What is the advantage of SS14-AU_R1_000A1 over standard parametric equivalents?

A: SS14-AU_R1_000A1 includes AEC-Q101 automotive qualification and is graded for automotive applications. This part maintains identical 40 V, 1 A electrical specifications and is suitable for automotive and high-reliability applications requiring formal qualification documentation.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts maintain ROHS3 compliance. Compliance status is verified in the provided specifications for each part.

Q: What inventory considerations apply to part selection?

A: SS14_R1_00001 (Panjit International Inc.) offers maximum inventory availability at 137,160 units. B140-E3/61T (Vishay) provides 23,400 units. B340A-E3/5AT (Vishay) provides 23,480 units. B140A-13 (Diodes Incorporated) provides 982 units. Selection should consider production volume requirements and supply chain continuity.

Q: Can parts with different current ratings be used interchangeably?

A: Parts with higher current ratings (B340A-E3/5AT at 3 A, SS24S-M3/5AT at 2 A) can replace 1 A rated parts in applications where circuit design permits. The reverse is not true: 1 A rated parts cannot replace higher current requirements. Forward voltage and reverse leakage specifications must be evaluated for each application.

Q: What is the operating temperature range for substitute parts?

A: B140AE-13 specifies -55°C to 150°C junction temperature. B140-E3/61T specifies -65°C to 125°C. SS14-AU_R1_000A1, SS14_R1_00001, and SS14W_R1_00001 specify -55°C to 150°C. SS24S-M3/5AT specifies -55°C to 150°C. B340A-E3/5AT specifies -65°C to 150°C. Application temperature requirements must be verified against each part's operating range.

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