SS29-E3/5BT Equivalent & Substitute Parts

Part Overview

The SS29-E3/5BT is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 90 V DC reverse voltage and 1.5 A average rectified current in a surface mount DO-214AA (SMB) package. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified when design requirements permit variations in voltage rating, current capacity, or manufacturer while maintaining functional compatibility within the same package family and technology classification.

Key Parameters

Parameter	Value
Manufacturer Part Number	SS29-E3/5BT
Manufacturer	Vishay General Semiconductor - Diodes Division
Category	Diodes, Rectifiers
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	90 V
Current - Average Rectified (Io)	1.5 A
Voltage - Forward (Vf) (Max) @ If	750 mV @ 1 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	30 µA @ 90 V
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the SS29-E3/5BT are classified into three categories based on parametric equivalence and manufacturer designation:

Parametric Equivalent (Same Manufacturer): Parts sharing identical electrical specifications and package designation from the same manufacturer. The SS29-E3/52T maintains all key parameters: 90 V reverse voltage, 1.5 A average rectified current, 750 mV forward voltage at 1 A, and DO-214AA package. The difference is packaging format (Tape & Reel variant).

Direct Manufacturer Equivalent (Cross-Manufacturer): Parts from alternative manufacturers with equal or superior electrical ratings in the same package. The STPS2H100U (STMicroelectronics) provides 100 V reverse voltage and 2 A current capacity, exceeding the original specifications while maintaining DO-214AA package compatibility.

Manufacturer Recommended Alternatives: Parts designated as manufacturer-recommended substitutes that provide functional equivalence with specified parameter variations. These include the SS29 (Taiwan Semiconductor Corporation) at 2 A capacity, and STMicroelectronics STPS series devices (STPS1H100UY, STPS2H100UY, STPS3H100U) with 100 V ratings and varying current ratings.

Substitution eligibility is determined by the following criteria:

Technology: Schottky diode classification
Package: DO-214AA (SMB) surface mount
Voltage Rating: Equal to or greater than 90 V
Current Rating: Equal to or greater than 1.5 A
Speed: Fast Recovery ≤ 500ns, > 200mA
Compliance: RoHS3 and REACH status maintained

Parameter Comparison

Parameter	SS29-E3/5BT	SS29-E3/52T	STPS2H100U	SS29	STPS1H100UY	STPS2H100UY	STPS3H100U
Manufacturer	Vishay	Vishay	STMicroelectronics	Taiwan Semiconductor	STMicroelectronics	STMicroelectronics	STMicroelectronics
Voltage - DC Reverse (Vr) (Max)	90 V	90 V	100 V	90 V	100 V	100 V	100 V
Current - Average Rectified (Io)	1.5 A	1.5 A	2 A	2 A	1 A	2 A	3 A
Voltage - Forward (Vf) (Max) @ If	750 mV @ 1 A	750 mV @ 1 A	790 mV @ 2 A	850 mV @ 2 A	770 mV @ 1 A	790 mV @ 2 A	840 mV @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Current - Reverse Leakage @ Vr	30 µA @ 90 V	30 µA @ 90 V	1 µA @ 100 V	100 µA @ 90 V	4 µA @ 100 V	1 µA @ 100 V	1 µA @ 100 V
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	175°C (Max)	-55°C ~ 150°C	-40°C ~ 175°C	-40°C ~ 175°C	175°C (Max)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

SS29-E3/52T: This part is the direct parametric equivalent to SS29-E3/5BT from the same manufacturer. Selection is appropriate when packaging format (Tape & Reel variant) is the only consideration. Both parts maintain identical electrical specifications and compliance certifications. This substitution introduces no design risk.

STPS2H100U and STPS2H100UY: These STMicroelectronics parts provide upgraded specifications with 100 V reverse voltage and 2 A current capacity, exceeding the original 90 V / 1.5 A ratings. Both maintain DO-214AA package compatibility and RoHS3 compliance. The STPS2H100UY variant includes automotive-grade designation and extended temperature range (-40°C to 175°C). Selection is appropriate when higher voltage or current margins are required in the design.

STPS1H100UY: This part provides 100 V reverse voltage with 1 A current capacity, which is below the original 1.5 A specification. This part is suitable only when circuit requirements permit reduced current capacity. The automotive-grade designation and extended temperature range (-40°C to 175°C) are available benefits.

STPS3H100U: This part provides 100 V reverse voltage with 3 A current capacity, offering the highest current rating among substitutes. Selection is appropriate when design margins for current handling are prioritized. Maximum junction temperature is 175°C.

SS29 (Taiwan Semiconductor Corporation): This part maintains 90 V reverse voltage with upgraded 2 A current capacity. Operating temperature range matches the original (-55°C to 150°C). Selection is appropriate when manufacturer diversification is required while maintaining voltage specification.

All listed substitutes maintain RoHS3 compliance, REACH unaffected status, and Schottky technology classification. Product status is Active for all parts, ensuring continued availability and support.

Frequently Asked Questions (FAQ)

Q: Can SS29-E3/52T be used as a direct replacement for SS29-E3/5BT?

A: Yes. SS29-E3/52T is a parametric equivalent with identical electrical specifications (90 V, 1.5 A, 750 mV forward voltage) and package designation (DO-214AA). The difference is packaging format (Tape & Reel variant). No design changes are required.

Q: What is the primary difference between SS29-E3/5BT and STPS2H100U?

A: STPS2H100U provides higher voltage rating (100 V vs. 90 V) and higher current capacity (2 A vs. 1.5 A). Both use DO-214AA package and Schottky technology. STPS2H100U is suitable when design margins for voltage and current are required.

Q: Can STPS1H100UY replace SS29-E3/5BT?

A: STPS1H100UY provides 100 V reverse voltage but only 1 A current capacity, which is below the original 1.5 A specification. This part is not suitable as a direct replacement. Use only when circuit requirements permit reduced current handling.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance and REACH unaffected status, matching the original SS29-E3/5BT certification.

Q: What is the operating temperature range difference between SS29-E3/5BT and STMicroelectronics STPS series?

A: SS29-E3/5BT operates from -55°C to 150°C. STMicroelectronics STPS1H100UY and STPS2H100UY (automotive-grade) operate from -40°C to 175°C. STPS2H100U and STPS3H100U specify 175°C maximum junction temperature. Verify application temperature requirements before selection.

Q: Can multiple substitute parts be used interchangeably in the same design?

A: Substitutes with identical specifications (such as SS29-E3/5BT and SS29-E3/52T) are interchangeable. Parts with different voltage or current ratings require circuit analysis to confirm compatibility with design margins and thermal management.

Q: What is the package compatibility for all listed parts?

A: All parts use DO-214AA (SMB) surface mount package. PCB footprint and reflow profile compatibility is maintained across all substitutes.

Q: Which substitute offers the best reverse leakage performance?

A: STPS2H100U, STPS2H100UY, and STPS3H100U all specify 1 µA reverse leakage at their respective voltage ratings, compared to 30 µA for SS29-E3/5BT at 90 V.

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