B120AE-13 Equivalent & Substitute Parts

Part Overview

The B120AE-13 is a Schottky rectifier diode rated for 20 V DC reverse voltage and 1 A average rectified current in a Surface Mount SMA package. This component is classified as Obsolete, indicating it is no longer in active production. Locating equivalent or substitute parts is necessary for ongoing design support, maintenance, and new production requirements where this diode specification remains applicable.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	20 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 1 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Package / Case	DO-214AC, SMA
Mounting Type	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C
Technology	Schottky
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the B120AE-13 are identified based on matching the following critical electrical and mechanical parameters:

Voltage - DC Reverse (Vr) (Max): 20 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 500 mV @ 1 A
Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount
Technology: Schottky

Parts meeting these criteria are classified as either Direct Manufacturer equivalents or Parametric Equivalents. Direct Manufacturer equivalents are produced by the same manufacturer (Diodes Incorporated) with identical electrical specifications. Parametric Equivalents are produced by alternative manufacturers and meet the same electrical performance requirements within the specified tolerances.

Parameter Comparison

Parameter	B120AE-13	B120-13-F	SS12-LTP
Manufacturer	Diodes Incorporated	Diodes Incorporated	Micro Commercial Co
Product Status	Obsolete	Active	Not For New Designs
Voltage - DC Reverse (Vr) (Max)	20 V	20 V	20 V
Current - Average Rectified (Io)	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 1 A	500 mV @ 1 A	500 mV @ 1 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	100 µA @ 20 V	500 µA @ 20 V	500 µA @ 20 V
Capacitance @ Vr, F	50 pF @ 4 V, 1 MHz	110 pF @ 4 V, 1 MHz	110 pF @ 4 V, 1 MHz
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C
Technology	Schottky	Schottky	Schottky
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

B120-13-F (Direct Manufacturer Equivalent - Recommended)

The B120-13-F is produced by Diodes Incorporated and is classified as Active. This part is the direct equivalent to the obsolete B120AE-13, sharing the same base product number (B120) and electrical specifications. The B120-13-F offers an extended operating temperature range (-65°C to 150°C versus -55°C to 150°C) and is available in higher inventory quantities (109,100 pieces). This part is suitable for new designs and ongoing production requirements.

SS12-LTP (Parametric Equivalent - Alternative)

The SS12-LTP is manufactured by Micro Commercial Co and meets all critical electrical parameters of the B120AE-13. This part is classified as Not For New Designs, indicating it is suitable for replacement and maintenance applications but not recommended for new product development. The SS12-LTP is available in Tape & Reel packaging and maintains ROHS3 compliance.

Both substitute parts are electrically compatible with the B120AE-13 within the specified parameter tolerances and share identical package geometry (DO-214AC, SMA).

Frequently Asked Questions (FAQ)

Q: Can the B120-13-F directly replace the B120AE-13 in existing designs?

A: Yes. The B120-13-F meets all electrical specifications of the B120AE-13, including voltage rating (20 V), current rating (1 A), forward voltage drop (500 mV @ 1 A), and package type (DO-214AC, SMA). The B120-13-F is pin-compatible and functionally equivalent.

Q: What are the differences between B120AE-13 and B120-13-F?

A: The primary differences are product status (Obsolete versus Active), operating temperature range (-55°C to 150°C versus -65°C to 150°C), reverse leakage current (100 µA versus 500 µA @ 20 V), and capacitance (50 pF versus 110 pF @ 4 V, 1 MHz). The B120-13-F provides a wider temperature range and higher inventory availability.

Q: Is the SS12-LTP suitable for new product designs?

A: No. The SS12-LTP is classified as Not For New Designs. It is suitable for replacement and maintenance of existing applications but should not be selected for new product development. The B120-13-F is the recommended choice for new designs.

Q: Are all three parts available in the same package?

A: Yes. All three parts use the DO-214AC (SMA) Surface Mount package, ensuring mechanical and electrical compatibility on the same PCB footprint.

Q: What is the significance of the reverse leakage current difference between B120AE-13 and its substitutes?

A: The B120AE-13 specifies 100 µA reverse leakage at 20 V, while both B120-13-F and SS12-LTP specify 500 µA. This difference affects circuit performance in applications sensitive to leakage current. Circuit validation is required if leakage current is a critical design parameter.

Q: What is the significance of the capacitance difference between B120AE-13 and its substitutes?

A: The B120AE-13 specifies 50 pF capacitance at 4 V, 1 MHz, while both B120-13-F and SS12-LTP specify 110 pF. This difference affects high-frequency circuit behavior and switching performance. Circuit validation is required if capacitance is a critical design parameter.

Q: Are all parts RoHS3 compliant?

A: Yes. The B120AE-13, B120-13-F, and SS12-LTP are all ROHS3 compliant, meeting environmental and regulatory requirements for lead-free manufacturing.

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