S2D-13 Equivalent & Substitute Parts

Part Overview

The S2D-13 is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 200 V DC reverse voltage and 1.5 A average rectified current in a surface mount SMB (DO-214AA) package. This component is classified as discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design requirements and production needs. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives with modified parameters within acceptable design tolerances.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	1.5	A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 1.5 A	V
Speed	Standard Recovery >500ns, > 200mA (Io)	-
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Capacitance @ Vr, F	20	pF @ 4V, 1MHz
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 S2D-13 is determined by the following critical parameters: reverse voltage rating (200 V minimum), average rectified current capacity (1.5 A minimum), surface mount SMB package compatibility, and operating temperature range. Parts are grouped into three categories:

Parametric Equivalents maintain all electrical specifications and differ only in packaging format (tape and reel versus bulk) or RoHS compliance status. These parts are direct replacements with no circuit redesign required.

Current-Rated Substitutes provide higher average rectified current capacity (2 A, 3 A, or 4 A) while maintaining the 200 V reverse voltage rating and SMB package. These parts are suitable for applications where the original 1.5 A rating provides insufficient margin or where design evolution requires increased current handling.

Recovery Speed Variants include both standard recovery (>500 ns) and fast recovery (≤500 ns) technologies. Fast recovery diodes exhibit lower reverse recovery time and reduced capacitance, making them suitable for higher-frequency switching applications, though they are not required for direct replacement in standard rectification circuits.

All substitute parts maintain the DO-214AA (SMB) surface mount package, ensuring mechanical and thermal compatibility with existing PCB layouts and assembly processes.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Speed	Reverse Recovery Time (trr)	Reverse Leakage @ Vr	Package	Tj (Operating)	Product Status	RoHS Status
S2D-13	Diodes Incorporated	200 V	1.5 A	1.15 V @ 1.5 A	Standard >500ns	-	5 µA @ 200 V	DO-214AA, SMB	-65 to 150°C	Discontinued	RoHS non-compliant
S2D-13-F	Diodes Incorporated	200 V	1.5 A	1.15 V @ 1.5 A	Standard >500ns	-	5 µA @ 200 V	DO-214AA, SMB	-65 to 150°C	Active	ROHS3 Compliant
RS2D-E3/5BT	Vishay General Semiconductor	200 V	1.5 A	1.3 V @ 1.5 A	Fast ≤500ns	150 ns	5 µA @ 200 V	DO-214AA, SMB	-55 to 150°C	Active	ROHS3 Compliant
RS2D-E3/52T	Vishay General Semiconductor	200 V	1.5 A	1.3 V @ 1.5 A	Fast ≤500ns	150 ns	5 µA @ 200 V	DO-214AA, SMB	-55 to 150°C	Active	ROHS3 Compliant
STTH1R02U	STMicroelectronics	200 V	1.5 A	1 V @ 1.5 A	Fast ≤500ns	30 ns	3 µA @ 200 V	DO-214AA, SMB	-40 to 175°C	Active	ROHS3 Compliant
S2D	Diotec Semiconductor	200 V	2 A	1.15 V @ 2 A	Standard >500ns	1.5 µs	5 µA @ 200 V	DO-214AA, SMB	-50 to 150°C	Active	ROHS3 Compliant
STTH2R02U	STMicroelectronics	200 V	2 A	1 V @ 2 A	Fast ≤500ns	30 ns	3 µA @ 200 V	DO-214AA, SMB	-40 to 175°C	Active	ROHS3 Compliant
MUR320SBHR5G	Taiwan Semiconductor Corporation	200 V	3 A	900 mV @ 3 A	Fast ≤500ns	25 ns	5 µA @ 200 V	DO-214AA, SMB	-55 to 175°C	Discontinued	ROHS3 Compliant
STTH4R02U	STMicroelectronics	200 V	4 A	1.05 V @ 4 A	Fast ≤500ns	30 ns	3 µA @ 200 V	DO-214AA, SMB	-40 to 175°C	Active	ROHS3 Compliant
STTH4R02UY	STMicroelectronics	200 V	4 A	1.05 V @ 4 A	Fast ≤500ns	30 ns	3 µA @ 200 V	DO-214AA, SMB	-40 to 175°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalent)

S2D-13-F is the primary direct replacement for S2D-13. Both parts maintain identical electrical specifications: 200 V reverse voltage, 1.5 A average rectified current, 1.15 V forward voltage at 1.5 A, and standard recovery speed characteristics. S2D-13-F is currently active in production with ROHS3 compliance, addressing the discontinued status of the original part. Packaging differs only in format (tape and reel versus bulk), with no impact on circuit performance.

Active Inventory Alternatives with Identical Current Rating

STTH1R02U (STMicroelectronics) provides 1.5 A current capacity with improved electrical characteristics: lower forward voltage (1 V versus 1.15 V), faster recovery time (30 ns), and reduced reverse leakage (3 µA versus 5 µA). Operating temperature range extends to 175°C maximum junction temperature. This part is suitable for direct substitution with the added benefit of reduced power dissipation in forward conduction.

RS2D-E3/5BT and RS2D-E3/52T (Vishay General Semiconductor) both provide 1.5 A current capacity with fast recovery characteristics (150 ns reverse recovery time). Forward voltage is 1.3 V at 1.5 A, representing a 0.15 V increase compared to S2D-13. Both parts are active with ROHS3 compliance and adequate inventory availability.

Higher Current Capacity Alternatives

S2D (Diotec Semiconductor) provides 2 A average rectified current while maintaining standard recovery speed and 1.15 V forward voltage at rated current. This part is suitable for applications requiring increased current margin or design evolution toward higher power levels.

STTH2R02U (STMicroelectronics) provides 2 A current capacity with fast recovery characteristics (30 ns), lower forward voltage (1 V at 2 A), and extended operating temperature range to 175°C. Inventory availability is substantial (43,020 pieces).

STTH4R02U and STTH4R02UY (STMicroelectronics) provide 4 A current capacity with fast recovery technology. STTH4R02UY includes automotive-grade qualification and extended temperature range (-40°C to 175°C). Both parts feature 30 ns reverse recovery time and 1.05 V forward voltage at 4 A.

Compliance Considerations

All recommended active substitutes maintain ROHS3 compliance, addressing regulatory requirements for new designs. The original S2D-13 is RoHS non-compliant; substitution with compliant alternatives is necessary for applications subject to RoHS directives.

Frequently Asked Questions (FAQ)

Q: Can S2D-13-F be used as a direct replacement for S2D-13?

A: Yes. S2D-13-F is a parametric equivalent with identical electrical specifications and SMB package. The only differences are product status (active versus discontinued) and RoHS compliance (ROHS3 versus non-compliant). No circuit modifications are required.

Q: What is the difference between standard recovery and fast recovery diodes?

A: Standard recovery diodes (S2D-13, S2D) have reverse recovery times exceeding 500 ns, while fast recovery diodes (STTH1R02U, RS2D-E3/5BT) have reverse recovery times of 30 ns to 150 ns. Fast recovery diodes are suitable for higher-frequency switching applications and exhibit lower reverse leakage current. For standard rectification at line frequency or low switching speeds, either type is acceptable.

Q: Can STTH1R02U replace S2D-13 in all applications?

A: STTH1R02U maintains the same 200 V reverse voltage and 1.5 A current rating as S2D-13, with improved electrical characteristics (lower forward voltage, faster recovery). The operating temperature range differs (-40°C to 175°C versus -65°C to 150°C). Substitution is suitable for applications within the STTH1R02U temperature range. Verify that the minimum operating temperature of -40°C meets design requirements.

Q: When should I use a higher current-rated part such as STTH2R02U or STTH4R02U?

A: Higher current-rated parts provide design margin and reduced thermal stress in applications where the original 1.5 A rating is marginal or where circuit evolution requires increased current capacity. These parts maintain the same 200 V reverse voltage and SMB package, ensuring mechanical compatibility. Use higher current ratings when circuit analysis indicates sustained currents approaching or exceeding 1.5 A, or when thermal management improvements are desired.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts use the DO-214AA (SMB) surface mount package, ensuring mechanical and thermal compatibility with existing PCB layouts. Packaging format (tape and reel, cut tape, or bulk) varies by manufacturer and supplier but does not affect circuit performance or PCB assembly compatibility.

Q: What is the significance of RoHS compliance for part selection?

A: RoHS3 compliance is required for products sold in markets subject to RoHS directives (European Union and others). The original S2D-13 is RoHS non-compliant. All recommended active substitutes (S2D-13-F, STTH1R02U, RS2D-E3/5BT, S2D, STTH2R02U, STTH4R02U, STTH4R02UY) are ROHS3 compliant, ensuring regulatory compliance for new designs and production.

Q: Can I use MUR320SBHR5G as a substitute?

A: MUR320SBHR5G provides 3 A current capacity with 200 V reverse voltage and SMB package compatibility. However, this part is discontinued at DiGi Electronics, limiting long-term availability. While electrically suitable for applications requiring higher current capacity, active alternatives such as STTH4R02U or STTH4R02UY are preferred due to confirmed ongoing production and inventory availability.

Q: What forward voltage differences should I consider when substituting parts?

A: Forward voltage varies among substitutes: S2D-13 and S2D specify 1.15 V at rated current, RS2D variants specify 1.3 V, and STMicroelectronics parts (STTH series) specify 1.0 to 1.05 V. Lower forward voltage reduces power dissipation and heat generation. For applications with tight thermal budgets or high-frequency operation, STMicroelectronics parts offer improved efficiency. Verify that circuit design accommodates the specified forward voltage range.

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