RS2BA-13 Equivalent & Substitute Parts

Part Overview

The RS2BA-13 is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 100 V DC reverse voltage and 1.5 A average rectified current in a Surface Mount SMA package (DO-214AC). This component is classified as discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design requirements and production continuity. Alternative parts must satisfy the electrical and mechanical specifications required for the application while maintaining compatibility with existing circuit designs and assembly processes.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	1.5	A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1.5 A	V
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5	µA @ 100 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Capacitance @ Vr, F	30	pF @ 4V, 1MHz
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-65 to 150	°C

Substitute Part Grouping Explanation

Substitute parts for the RS2BA-13 are identified based on strict electrical and mechanical parameter matching within the allowed tolerances for general-purpose rectifier diodes. The substitution logic is structured as follows:

Parametric Equivalents maintain identical or equivalent electrical specifications across all critical parameters: reverse voltage rating (100 V), average rectified current (1.5 A), forward voltage drop (1.3 V @ 1.5 A), reverse recovery time (150 ns), reverse leakage current (5 µA @ 100 V), and package form factor (DO-214AC, SMA). These parts are direct functional replacements with no circuit redesign required.

Manufacturer-Recommended Substitutes satisfy the core voltage and package requirements but may differ in current rating or secondary electrical characteristics. These parts are qualified for applications where the specified current rating is not exceeded and where the alternative electrical parameters remain within acceptable circuit operating margins.

The following key parameters determine substitution eligibility:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 100 V
Package / Case: Must be DO-214AC, SMA (Surface Mount)
Mounting Type: Must be Surface Mount
Reverse Recovery Time (trr): Must be ≤ 150 ns for fast recovery classification
Current - Average Rectified (Io): Must support circuit current requirements

Parameter Comparison

Parameter	RS2BA-13	RS2BA-13-F	RGF1B
Manufacturer	Diodes Incorporated	Diodes Incorporated	Fairchild Semiconductor
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V
Current - Average Rectified (Io)	1.5 A	1.5 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1.5 A	1.3 V @ 1.5 A	1.3 V @ 1 A
Reverse Recovery Time (trr)	150 ns	150 ns	150 ns
Current - Reverse Leakage @ Vr	5 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 V
Capacitance @ Vr, F	30 pF @ 4V, 1MHz	30 pF @ 4V, 1MHz	8.5 pF @ 4V, 1MHz
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-65 to 150 °C	-65 to 150 °C	-65 to 175 °C
Product Status	Discontinued at DiGi Electronics	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Not specified

Engineering Selection Recommendations

RS2BA-13-F (Diodes Incorporated) is the primary parametric equivalent and direct replacement for the RS2BA-13. This part maintains identical electrical specifications including 100 V reverse voltage, 1.5 A average rectified current, 1.3 V forward voltage drop at 1.5 A, and 150 ns reverse recovery time. The RS2BA-13-F is currently in active production status with ROHS3 compliance certification, addressing the regulatory and supply chain limitations of the discontinued RS2BA-13. The packaging format (Tape & Reel) supports high-volume manufacturing requirements. This part is selected when full electrical and thermal equivalence is required with no circuit modifications.

RGF1B (Fairchild Semiconductor) is a manufacturer-recommended substitute qualified for applications where the average rectified current requirement does not exceed 1 A. This part shares the 100 V reverse voltage rating, DO-214AC SMA package form factor, 150 ns reverse recovery time, and 5 µA reverse leakage current with the RS2BA-13. The RGF1B provides an extended operating temperature range (-65 to 175 °C) compared to the original part (-65 to 150 °C). The lower junction capacitance (8.5 pF versus 30 pF) may provide improved high-frequency performance in switching applications. This part is selected when circuit current requirements are limited to 1 A or less and when extended temperature operation is beneficial.

Selection between these substitutes is determined by the application's current requirement: use RS2BA-13-F for circuits requiring the full 1.5 A rating; use RGF1B for circuits operating at 1 A or below.

Frequently Asked Questions (FAQ)

Q: Can RS2BA-13-F be used as a direct replacement for RS2BA-13 in existing designs?

A: Yes. The RS2BA-13-F is a parametric equivalent with identical electrical specifications (100 V reverse voltage, 1.5 A average rectified current, 1.3 V forward voltage, 150 ns reverse recovery time) and the same DO-214AC SMA package. No circuit modifications are required. The primary difference is packaging format (Tape & Reel versus bulk) and regulatory compliance (ROHS3 versus non-compliant).

Q: What is the current limitation when using RGF1B as a substitute?

A: The RGF1B is rated for 1 A average rectified current, compared to 1.5 A for the RS2BA-13. This part is suitable only for applications where the circuit current does not exceed 1 A. Exceeding this rating will result in component failure and circuit malfunction.

Q: Are all three parts compatible with the same PCB footprint?

A: Yes. All three parts use the DO-214AC SMA package form factor and Surface Mount mounting type, ensuring mechanical and footprint compatibility. No PCB redesign is necessary when substituting between these parts.

Q: What is the difference in capacitance between RS2BA-13-F and RGF1B?

A: The RS2BA-13-F has a junction capacitance of 30 pF at 4 V and 1 MHz, while the RGF1B has 8.5 pF under the same conditions. The lower capacitance of the RGF1B may reduce parasitic effects in high-frequency switching circuits but does not affect low-frequency rectification performance.

Q: Does RGF1B support the full operating temperature range of RS2BA-13?

A: The RGF1B supports an extended operating temperature range of -65 to 175 °C, compared to -65 to 150 °C for the RS2BA-13. This provides additional thermal margin for high-temperature applications.

Q: Why is RS2BA-13 discontinued?

A: The RS2BA-13 is discontinued at DiGi Electronics. The active equivalent RS2BA-13-F is available as the direct replacement from the same manufacturer.

Q: Can RGF1B be used in all applications where RS2BA-13 was used?

A: RGF1B can be used only in applications where the circuit current requirement does not exceed 1 A. For circuits requiring the full 1.5 A rating, RS2BA-13-F is the appropriate substitute.

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