Equivalent & Substitute Parts for B190-13 Schottky Diode

Part Overview

The B190-13 is a Schottky rectifier diode rated for 90 V DC reverse voltage and 1 A average rectified current in a surface mount SMA (DO-214AC) package. This part is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and procurement. The B190-13 operates across a junction temperature range of -65°C to 150°C and exhibits fast recovery characteristics suitable for high-frequency rectification applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	90	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	790 mV @ 1 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	500	µA @ 90 V
Capacitance @ Vr, F	80	pF @ 4V, 1MHz
Package / Case	DO-214AC, SMA	—
Operating Temperature - Junction	-65 to 150	°C
Technology	Schottky	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution of the B190-13 is determined by the following critical parameters:

Voltage Rating: The B190-13 operates at 90 V DC reverse voltage. Substitute parts must meet or exceed this voltage specification to ensure safe operation in the original circuit.

Current Rating: The B190-13 is rated for 1 A average rectified current. Substitute parts rated at 1 A or higher are acceptable; lower current ratings are not suitable.

Package Type: The B190-13 uses the DO-214AC (SMA) surface mount package. All substitute parts must use the same package to ensure mechanical and electrical compatibility with existing PCB layouts.

Technology: All substitute parts must be Schottky diodes to maintain the fast recovery and low forward voltage characteristics of the original design.

Speed Characteristics: Fast recovery ≤ 500ns for currents > 200mA is required to match the switching performance of the B190-13.

Substitute parts are grouped into two categories:

Direct Equivalents: Parts with identical or near-identical electrical specifications (90 V, 1 A) in the same package.

Higher-Rated Alternatives: Parts with equal or higher voltage and current ratings that provide additional design margin while maintaining compatibility with the original circuit requirements.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [mV]	Speed [ns]	Ir @ Vr [µA]	Package	Temp Range [°C]	Status
B190-13	Diodes Incorporated	90	1	790 @ 1A	≤ 500	500 @ 90V	DO-214AC (SMA)	-65 to 150	Discontinued
B190-13-F	Diodes Incorporated	90	1	790 @ 1A	≤ 500	500 @ 90V	DO-214AC (SMA)	-65 to 150	Active
SS19	Taiwan Semiconductor Corporation	90	1	800 @ 1A	≤ 500	100 @ 90V	DO-214AC (SMA)	-55 to 150	Active
SS110-LTP	Micro Commercial Co	100	1	850 @ 1A	≤ 500	500 @ 100V	DO-214AC (SMA)	-55 to 150	Active
SS1H10-M3/61T	Vishay General Semiconductor - Diodes Division	100	1	860 @ 2A	≤ 500	1 @ 90V	DO-214AC (SMA)	-65 to 175	Active
STPS1H100A	STMicroelectronics	100	1	770 @ 1A	≤ 500	4 @ 100V	DO-214AC (SMA)	—	Active
STPS1H100AY	STMicroelectronics	100	1	770 @ 1A	≤ 500	4 @ 100V	DO-214AC (SMA)	-40 to 175	Active
STPS2H100A	STMicroelectronics	100	2	790 @ 2A	≤ 500	1 @ 100V	DO-214AC (SMA)	—	Active
STPS2H100AY	STMicroelectronics	100	2	790 @ 2A	≤ 500	1 @ 100V	DO-214AC (SMA)	-40 to 175	Active

Engineering Selection Recommendations

Primary Equivalent: B190-13-F (Diodes Incorporated) is the direct equivalent to the B190-13. This part maintains identical electrical specifications (90 V, 1 A, 790 mV forward voltage) and the same operating temperature range (-65°C to 150°C). The B190-13-F is currently active and available in Tape & Reel packaging with 3700 units in stock. This part is RoHS3 compliant, addressing the non-compliance status of the original B190-13.

Direct Functional Equivalent: SS19 (Taiwan Semiconductor Corporation) provides equivalent performance at 90 V and 1 A with marginally higher forward voltage (800 mV vs. 790 mV). The SS19 features lower reverse leakage current (100 µA vs. 500 µA) and is RoHS3 compliant. Operating temperature range is -55°C to 150°C, which is narrower at the lower end than the B190-13. This part is suitable for applications not requiring the full -65°C lower temperature limit.

Higher-Rated Alternatives: Parts rated at 100 V provide additional voltage margin over the 90 V specification. STPS1H100A and STPS1H100AY (STMicroelectronics) maintain the 1 A current rating with improved forward voltage characteristics (770 mV). The STPS1H100AY includes automotive-grade qualification and extended temperature range (-40°C to 175°C). STPS2H100A and STPS2H100AY provide 2 A current capacity with 100 V voltage rating, suitable for applications requiring additional current headroom.

Compliance Status: All recommended substitute parts are RoHS3 compliant and REACH unaffected, addressing regulatory requirements not met by the discontinued B190-13.

Frequently Asked Questions (FAQ)

Q: Can I use a 100 V rated diode in place of the 90 V B190-13?

A: Yes. A 100 V rated diode is electrically compatible with a 90 V application. The higher voltage rating provides additional design margin and does not degrade circuit performance. All 100 V substitute parts listed maintain the same 1 A current rating and fast recovery characteristics required by the original design.

Q: What is the difference between B190-13 and B190-13-F?

A: The B190-13-F is the tape and reel packaged version of the B190-13 with identical electrical specifications. The primary difference is packaging format and product status: B190-13-F is currently active with 3700 units in stock, while B190-13 is discontinued. The B190-13-F is also RoHS3 compliant.

Q: Are STPS2H100A and STPS2H100AY suitable replacements for the 1 A B190-13?

A: Yes. The STPS2H100A and STPS2H100AY are rated for 2 A average rectified current, which exceeds the 1 A requirement of the B190-13. These parts are backward compatible and provide additional current capacity. The 2 A rating does not affect operation in a 1 A circuit; the diode will simply operate below its maximum current specification.

Q: What is the difference between STPS1H100A and STPS1H100AY?

A: Both parts are rated at 100 V and 1 A with identical forward voltage (770 mV @ 1 A). The STPS1H100AY includes automotive-grade qualification (Grade Q) and an extended operating temperature range of -40°C to 175°C, compared to the standard STPS1H100A. The STPS1H100AY is suitable for automotive and high-temperature applications.

Q: Does the DO-214AC package differ from the SMA package?

A: No. DO-214AC and SMA refer to the same surface mount package. These designations are equivalent and interchangeable. All substitute parts listed use this same package, ensuring mechanical compatibility with existing PCB layouts.

Q: What is the significance of the reverse leakage current difference between B190-13 (500 µA) and SS19 (100 µA)?

A: Lower reverse leakage current reduces power dissipation and heat generation in reverse bias conditions. The SS19 with 100 µA leakage is superior in this respect. However, both values are within acceptable ranges for typical rectifier applications. The choice depends on specific thermal and power budget requirements of the application.

Q: Can I use SS110-LTP as a substitute for the B190-13?

A: Yes. The SS110-LTP is rated at 100 V and 1 A with fast recovery characteristics and the same DO-214AC package. Forward voltage is 850 mV at 1 A, which is 60 mV higher than the B190-13. This part is suitable for applications where the slightly higher forward voltage drop is acceptable. Operating temperature range is -55°C to 150°C.

Q: Which substitute part has the lowest forward voltage?

A: STPS1H100A and STPS1H100AY both feature 770 mV forward voltage at 1 A, which is 20 mV lower than the B190-13 specification of 790 mV. Lower forward voltage reduces power dissipation in the diode during conduction.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed are RoHS3 compliant. The original B190-13 is RoHS non-compliant. This compliance improvement is a significant advantage when selecting substitute parts for new designs or production runs subject to RoHS regulations.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message