DSEC29-02AS-TUB Equivalent & Substitute Parts

Part Overview

The DSEC29-02AS-TUB is a diode array rectifier manufactured by IXYS, configured as a 1 Pair Common Cathode design with 200V reverse voltage rating and 15A average rectified current per diode. The device is packaged in TO-263-3 (D2PAK) surface mount configuration. This part is classified as obsolete, necessitating identification of equivalent substitute components that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Voltage - DC Reverse (Vr) (Max)	200 V
Current - Average Rectified (Io) (per Diode)	15 A
Voltage - Forward (Vf) (Max) @ If	1.06 V @ 15 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	25 ns
Operating Temperature - Junction	-55°C ~ 175°C
Mounting Type	Surface Mount
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the DSEC29-02AS-TUB is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Diode Configuration: 1 Pair Common Cathode (mandatory)
Voltage - DC Reverse (Vr) (Max): 200 V (mandatory)
Package / Case: TO-263-3, D2PAK (mandatory for mechanical compatibility)
Mounting Type: Surface Mount (mandatory)
Current - Average Rectified (Io) (per Diode): 15 A (primary rating; lower ratings represent downrating)
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io) (mandatory)
Operating Temperature - Junction: -55°C minimum, 175°C maximum (mandatory)

Substitute parts are grouped by current rating capability. Parts rated at 15A provide direct replacement capability. Parts rated below 15A (10A, 8A, 5A) represent current-limited alternatives suitable only for applications where the lower current rating is acceptable. Forward voltage characteristics and reverse recovery time variations within the fast recovery classification are acceptable within the scope of standard rectifier diode performance.

Parameter Comparison

Parameter	DSEC29-02AS-TUB (IXYS)	STTH3002CG-TR (STMicroelectronics)	STTH3002CG (STMicroelectronics)	SBR20A200CTB-13 (Diodes Inc.)	SBR20A200CTB (Diodes Inc.)	FFB20UP20DN-F085 (onsemi)	MURB1620CTT4G (onsemi)	SBR10200CTB-13-G (Diodes Inc.)
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V	200 V	200 V	200 V	200 V	200 V
Current - Average Rectified (Io) (per Diode)	15 A	15 A	15 A	10 A	10 A	10 A	8 A	5 A
Voltage - Forward (Vf) (Max) @ If	1.06 V @ 15 A	1.05 V @ 15 A	1.05 V @ 15 A	960 mV @ 20 A	960 mV @ 20 A	1.15 V @ 10 A	975 mV @ 8 A	920 mV @ 5 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	25 ns	22 ns	22 ns	30 ns	30 ns	40 ns	35 ns	20 ns
Current - Reverse Leakage @ Vr	100 µA @ 200 V	20 µA @ 200 V	20 µA @ 200 V	100 µA @ 200 V	100 µA @ 200 V	10 µA @ 200 V	5 µA @ 200 V	5 µA @ 200 V
Operating Temperature - Junction	-55°C ~ 175°C	175°C (Max)	175°C (Max)	-65°C ~ 175°C	-65°C ~ 175°C	-55°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (15A Current Rating):

STTH3002CG-TR and STTH3002CG manufactured by STMicroelectronics are direct electrical and mechanical equivalents to the DSEC29-02AS-TUB. Both devices maintain identical 15A current rating, 200V reverse voltage, TO-263-3 D2PAK packaging, and fast recovery diode characteristics. STTH3002CG-TR is supplied in Cut Tape (CT) packaging with 15,302 units in stock, while STTH3002CG is supplied in Tube packaging with 1,220 units in stock. Both are active products with ROHS3 compliance and REACH unaffected status, providing long-term supply continuity.

Current-Limited Alternatives (10A Rating):

SBR20A200CTB-13 and SBR20A200CTB manufactured by Diodes Incorporated provide 10A current rating in identical TO-263-3 D2PAK packaging with 200V reverse voltage. These Super Barrier technology devices exhibit lower forward voltage (960 mV @ 20A) and improved reverse leakage characteristics (100 µA @ 200V). SBR20A200CTB-13 is supplied in Tape & Reel (TR) packaging with 3,000 units in stock. SBR20A200CTB is supplied in Tube packaging with 7,625 units in stock. Both are active products with ROHS3 compliance.

FFB20UP20DN-F085 manufactured by onsemi provides 10A current rating with automotive grade qualification (AEC-Q101) in TO-263-3 D2PAK packaging. This device is supplied in Tape & Reel (TR) packaging with 6,396 units in stock and is an active product with ROHS3 compliance.

Lower Current Alternatives (8A and 5A Ratings):

MURB1620CTT4G manufactured by onsemi provides 8A current rating in TO-263-3 D2PAK packaging with extended operating temperature range (-65°C ~ 175°C). This SWITCHMODE™ series device is supplied in Cut Tape (CT) & Digi-Reel® packaging with 17,100 units in stock and is an active product with ROHS3 compliance.

SBR10200CTB-13-G manufactured by Diodes Incorporated provides 5A current rating in TO-263-3 D2PAK packaging with Super Barrier technology and the lowest forward voltage (920 mV @ 5A). This device is supplied in Tape & Reel (TR) packaging with 1,528 units in stock and is an active product with ROHS3 compliance.

Selection of current-limited alternatives requires confirmation that the application circuit operates within the reduced current specification.

Frequently Asked Questions (FAQ)

Q: Can STTH3002CG-TR directly replace DSEC29-02AS-TUB without circuit modification?

A: Yes. STTH3002CG-TR maintains identical electrical specifications (15A current rating, 200V reverse voltage, fast recovery characteristics) and mechanical compatibility (TO-263-3 D2PAK package). Pin configuration and thermal characteristics are equivalent.

Q: What is the difference between SBR20A200CTB-13 and SBR20A200CTB?

A: Both devices are electrically identical with 10A current rating and 200V reverse voltage. The primary difference is packaging: SBR20A200CTB-13 is supplied in Tape & Reel (TR) format, while SBR20A200CTB is supplied in Tube format. Selection depends on assembly process requirements.

Q: Can I use a 10A-rated device in place of the 15A DSEC29-02AS-TUB?

A: A 10A-rated substitute is acceptable only if the application circuit operates at or below 10A average rectified current. The device will function correctly within its rated current specification, but cannot handle currents exceeding 10A. Circuit analysis is required to confirm current requirements.

Q: What is the significance of the TO-263-3 D2PAK package designation?

A: TO-263-3 D2PAK is a surface mount package with 3 leads (2 signal leads plus thermal tab). All substitute parts listed maintain this identical package configuration, ensuring mechanical compatibility with existing PCB layouts and assembly processes. The package provides superior thermal dissipation compared to smaller packages.

Q: Are all substitute parts RoHS compliant?

A: Yes. All active substitute parts listed (STTH3002CG-TR, STTH3002CG, SBR20A200CTB-13, SBR20A200CTB, FFB20UP20DN-F085, MURB1620CTT4G, and SBR10200CTB-13-G) are ROHS3 compliant. The original DSEC29-02AS-TUB RoHS status is not specified in available documentation.

Q: What does "1 Pair Common Cathode" configuration mean?

A: This diode array contains two independent diodes sharing a common cathode connection. The configuration is essential for specific circuit topologies such as bridge rectifiers or dual-diode applications. All substitute parts maintain this identical configuration.

Q: Why is reverse recovery time (trr) important for substitution?

A: Reverse recovery time affects switching speed and electromagnetic interference characteristics. The DSEC29-02AS-TUB specifies 25 ns. Substitute parts range from 20 ns to 40 ns, all within the fast recovery classification (≤ 500ns). Variations within this range are acceptable for standard rectifier applications.

Q: What is the difference between Standard and Super Barrier diode technology?

A: Super Barrier technology (used in SBR series devices) typically provides lower forward voltage drop and faster recovery characteristics compared to Standard technology. Both technologies meet the fast recovery classification required for this application. Technology selection depends on specific circuit requirements for efficiency and switching performance.

Q: Can I mix different substitute parts in the same circuit board?

A: All substitute parts are mechanically and electrically compatible within their respective current ratings. However, mixing different manufacturers or current ratings in the same application requires circuit analysis to confirm that each device operates within its rated specifications and that the application tolerates any performance variations between devices.

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