B190B-13 Equivalent & Substitute Parts

Part Overview

The B190B-13 is a Schottky rectifier diode rated for 90 V DC reverse voltage and 1 A average rectified current in a surface mount SMB (DO-214AA) package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design support and production requirements. Equivalent parts maintain identical electrical specifications, while substitute parts provide functional alternatives with modified parameters suitable for the same application circuit topology.

Key Parameters

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

Substitute Part Grouping Explanation

Substitution of the B190B-13 is determined by the following critical parameters:

Electrical Equivalence Criteria:

Voltage - DC Reverse (Vr) rating must equal or exceed 90 V
Current - Average Rectified (Io) rating must equal or exceed 1 A
Technology must be Schottky for fast recovery characteristics
Speed classification must maintain Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Compatibility Criteria:

Mounting Type: Surface Mount
Package / Case: DO-214AA, SMB (primary) or compatible surface mount packages

Compliance Considerations:

RoHS3 Compliant status preferred for new designs
Moisture Sensitivity Level (MSL) 1 (Unlimited) maintained across all substitutes

Substitute parts are grouped into three categories:

Direct Manufacturer Equivalents – Identical electrical specifications with improved product status or packaging format
Parametric Equivalents – Identical electrical specifications with automotive qualification or enhanced compliance
Functional Substitutes – Modified voltage or current ratings that exceed the original specification, suitable for applications with higher design margins

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Reverse Leakage @ Vr [µA]	Package	Product Status	RoHS Status
B190B-13	Diodes Incorporated	90	1	790 @ 1 A	500 @ 90 V	DO-214AA, SMB	Discontinued at DiGi Electronics	RoHS non-compliant
B190B-13-F	Diodes Incorporated	90	1	790 @ 1 A	500 @ 90 V	DO-214AA, SMB	Active	ROHS3 Compliant
B190BQ-13-F	Diodes Incorporated	90	1	790 @ 1 A	500 @ 90 V	DO-214AA, SMB	Active	ROHS3 Compliant
MBRS190T3G	onsemi	90	1	750 @ 1 A	500 @ 90 V	DO-214AA, SMB	Active	ROHS3 Compliant
HSM190JE3/TR13	Microchip Technology	90	1	840 @ 1 A	100 @ 90 V	DO-214BA	Active	ROHS3 Compliant
STPS1H100U	STMicroelectronics	100	1	770 @ 1 A	4 @ 100 V	DO-214AA, SMB	Active	ROHS3 Compliant
STPS1H100UY	STMicroelectronics	100	1	770 @ 1 A	4 @ 100 V	DO-214AA, SMB	Active	ROHS3 Compliant
STPS2H100U	STMicroelectronics	100	2	790 @ 2 A	1 @ 100 V	DO-214AA, SMB	Active	ROHS3 Compliant
STPS2H100UY	STMicroelectronics	100	2	790 @ 2 A	1 @ 100 V	DO-214AA, SMB	Active	ROHS3 Compliant
STPS3H100U	STMicroelectronics	100	3	840 @ 3 A	1 @ 100 V	DO-214AA, SMB	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Identical Electrical Specifications):

B190B-13-F is the primary direct replacement. This part maintains all electrical parameters of the original B190B-13 while offering Active product status and ROHS3 compliance. The transition from bulk packaging to Tape & Reel (TR) format provides improved handling and traceability for production environments.

B190BQ-13-F provides an alternative direct replacement with identical electrical specifications and adds AEC-Q101 automotive qualification. This part is suitable for applications requiring automotive-grade component certification.

MBRS190T3G (onsemi) maintains the 90 V / 1 A specification with marginally improved forward voltage (750 mV vs. 790 mV @ 1 A) and reduced reverse leakage (500 µA). Active product status and ROHS3 compliance support long-term availability.

Package Consideration:

HSM190JE3/TR13 (Microchip Technology) provides electrical equivalence but uses DO-214BA package instead of DO-214AA (SMB). This part is suitable only for designs where PCB footprint modification is acceptable. Forward voltage is higher (840 mV @ 1 A) and reverse leakage is lower (100 µA @ 90 V).

Functional Substitutes (Higher Voltage/Current Ratings):

STPS1H100U and STPS1H100UY provide 100 V reverse voltage rating with 1 A current capacity. These parts offer improved design margin for voltage stress while maintaining identical current handling. STPS1H100UY includes automotive qualification (Grade: Automotive, AEC-Q101 implied by series designation).

STPS2H100U and STPS2H100UY provide 100 V reverse voltage with 2 A current capacity, suitable for applications requiring higher current headroom. STPS2H100UY includes automotive qualification.

STPS3H100U provides 100 V reverse voltage with 3 A current capacity for maximum design margin in high-current applications.

All STMicroelectronics STPS series parts maintain SMB package compatibility and ROHS3 compliance with Active product status.

Frequently Asked Questions (FAQ)

Q: Can B190B-13-F be used as a direct replacement for B190B-13?

A: Yes. B190B-13-F is electrically identical to B190B-13, maintaining 90 V reverse voltage, 1 A current rating, and 790 mV forward voltage. The primary difference is product status (Active vs. Discontinued) and packaging format (Tape & Reel vs. bulk). Both use DO-214AA (SMB) package.

Q: What is the difference between B190B-13-F and B190BQ-13-F?

A: Both parts are electrically identical with 90 V / 1 A specifications. B190BQ-13-F includes AEC-Q101 automotive qualification, making it suitable for automotive applications requiring certified components. Selection depends on application requirements.

Q: Can STPS1H100U replace B190B-13 in my circuit?

A: STPS1H100U is a functional substitute with 100 V reverse voltage (vs. 90 V) and 1 A current rating. The higher voltage rating provides additional design margin. Forward voltage is 770 mV @ 1 A (vs. 790 mV), and reverse leakage is significantly lower at 4 µA @ 100 V (vs. 500 µA). Package compatibility (DO-214AA, SMB) is maintained. This part is suitable for applications where the higher voltage rating does not create design conflicts.

Q: Why would I choose STPS2H100U or STPS3H100U over STPS1H100U?

A: STPS2H100U and STPS3H100U provide higher current capacity (2 A and 3 A respectively) while maintaining 100 V reverse voltage. These parts are selected when the application circuit requires higher current handling capability or when design margin for current stress is desired. All three maintain SMB package compatibility.

Q: Is HSM190JE3/TR13 compatible with B190B-13 PCB layouts?

A: HSM190JE3/TR13 uses DO-214BA package instead of DO-214AA (SMB). While both are surface mount packages, the footprints differ. This part requires PCB layout modification and is not a direct pin-compatible replacement. Electrical specifications are equivalent (90 V / 1 A).

Q: What does RoHS3 compliance mean for component selection?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. B190B-13 is RoHS non-compliant, while all active substitute parts listed are ROHS3 compliant. For new designs and production, ROHS3 compliant parts are required in most markets.

Q: Are automotive-grade parts (B190BQ-13-F, STPS1H100UY, STPS2H100UY) necessary for non-automotive applications?

A: Automotive-grade parts include additional qualification testing and stricter process controls. For non-automotive applications, standard industrial-grade parts (B190B-13-F, STPS1H100U, STPS2H100U) are sufficient. Automotive-grade selection is driven by application requirements, not by technical necessity in non-automotive circuits.

Q: What is the significance of reverse leakage current differences between parts?

A: Reverse leakage current affects power dissipation and circuit performance at high temperatures. B190B-13 specifies 500 µA @ 90 V, while STPS series parts specify 1-4 µA @ 100 V. Lower reverse leakage reduces standby power consumption and heat generation. Selection depends on circuit sensitivity to leakage current.

Q: Can I use a higher-rated part (STPS2H100U or STPS3H100U) in place of B190B-13?

A: Yes, provided the circuit design accommodates the higher current rating. The 100 V reverse voltage rating is compatible with 90 V circuit requirements. Higher current capacity does not create functional conflicts; it provides additional design margin. Forward voltage and reverse leakage characteristics differ slightly but remain within acceptable ranges for most rectifier applications.

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