Request Quote
(Ships tomorrow)
SMB10J33-E3/52 Equivalent & Substitute Parts
Part Overview
The SMB10J33-E3/52 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This component is designed for general-purpose transient voltage suppression in surface-mount applications using the DO-214AA (SMB) package. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SMB10J33-E3/52 |
| Manufacturer | Vishay General Semiconductor - Diodes Division |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener, Unidirectional |
| Package / Case | DO-214AA, SMB |
| Voltage - Reverse Standoff (Typ) | 33V |
| Voltage - Breakdown (Min) | 36.7V |
| Voltage - Clamping (Max) @ Ipp | 59V |
| Current - Peak Pulse (10/1000µs) | 16.9A |
| Power - Peak Pulse | 1000W (1kW) |
| Operating Temperature | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the SMB10J33-E3/52 is determined by the following critical parameters:
Mandatory Matching Parameters:
- Voltage - Reverse Standoff (Typ): 33V
- Voltage - Breakdown (Min): 36.7V
- Package / Case: DO-214AA, SMB
- Mounting Type: Surface Mount
- Unidirectional Channels: 1
- Type: Zener
Allowable Variation Parameters:
- Voltage - Clamping (Max) @ Ipp: 53.3V to 59V (lower clamping voltage provides improved transient suppression)
- Current - Peak Pulse (10/1000µs): 10.2A to 18.8A (higher current capability maintains or exceeds performance)
- Power - Peak Pulse: 600W to 1000W (600W minimum acceptable for general-purpose applications)
- Operating Temperature: -55°C to -65°C minimum; 150°C to 175°C maximum (extended ranges acceptable)
Substitute parts are grouped into two categories based on clamping voltage characteristics:
Group A - Lower Clamping Voltage (53.3V): SMB10J33A-E3/52, SMBJ33A (Good-Ark), SMBJ33A-HRA (Littelfuse), SMBJ33A-T7 (Littelfuse), SMBJ33A-TP (Micro Commercial Co), SMBJ33A-TR (STMicroelectronics), SMBJ33AE3/TR13 (Microchip)
Group B - Matching Clamping Voltage (59V): SMBJ33E3/TR13 (Microchip)
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff (Typ) | Voltage - Breakdown (Min) | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse (10/1000µs) | Power - Peak Pulse | Operating Temperature | Product Status |
|---|---|---|---|---|---|---|---|---|
| SMB10J33-E3/52 | Vishay | 33V | 36.7V | 59V | 16.9A | 1000W | -55°C ~ 150°C | Obsolete |
| SMB10J33A-E3/52 | Vishay | 33V | 36.7V | 53.3V | 18.8A | 1000W | -55°C ~ 150°C | Active |
| SMBJ33A | Good-Ark Semiconductor | 33V | 36.7V | 53.3V | 11.3A | 600W | -55°C ~ 150°C | Active |
| SMBJ33A-HRA | Littelfuse | 33V | 36.7V | 53.3V | 11.3A | 600W | -65°C ~ 150°C | Active |
| SMBJ33A-T7 | Littelfuse Inc. | 33V | 36.7V | 53.3V | 11.3A | 600W | -65°C ~ 150°C | Active |
| SMBJ33A-TP | Micro Commercial Co | 33V | 36.7V | 53.3V | 11.3A | 600W | -55°C ~ 175°C | Active |
| SMBJ33A-TR | STMicroelectronics | 33V | 36.7V | 53.3V | 11.8A | 600W | -55°C ~ 150°C | Active |
| SMBJ33AE3/TR13 | Microchip Technology | 33V | 36.7V | 53.3V | 11.3A | 600W | -65°C ~ 150°C | Active |
| SMBJ33E3/TR13 | Microchip Technology | 33V | 36.7V | 59V | 10.2A | 600W | -65°C ~ 150°C | Active |
Engineering Selection Recommendations
Primary Recommendation - Direct Replacement: SMB10J33A-E3/52 (Vishay) is the direct active equivalent. It maintains the same manufacturer, series (TransZorb®), package, and operating temperature range. The lower clamping voltage (53.3V vs 59V) and higher peak pulse current (18.8A vs 16.9A) provide improved transient suppression performance. Both parts are ROHS3 compliant with MSL 1 rating.
Secondary Recommendations - Active Alternatives: SMBJ33E3/TR13 (Microchip Technology) matches the original clamping voltage specification (59V) and maintains ROHS3 compliance. This part is suitable when clamping voltage matching is a design requirement. Operating temperature range extends to -65°C minimum.
SMBJ33A variants from Littelfuse (SMBJ33A-HRA, SMBJ33A-T7) and STMicroelectronics (SMBJ33A-TR) provide active alternatives with lower clamping voltage (53.3V) and 600W power rating. These are suitable for general-purpose applications where the reduced power dissipation is acceptable. All maintain ROHS3 compliance and MSL 1 rating.
Tertiary Recommendation - Extended Temperature Range: SMBJ33A-TP (Micro Commercial Co) extends the maximum operating temperature to 175°C, providing additional thermal margin for high-temperature environments while maintaining all other electrical specifications.
All substitute parts are ROHS3 compliant, MSL 1 rated, and suitable for surface-mount assembly in DO-214AA (SMB) package footprints.
Frequently Asked Questions (FAQ)
Q: Can I use SMBJ33A (53.3V clamping) as a direct replacement for SMB10J33-E3/52 (59V clamping)? A: Yes. The lower clamping voltage (53.3V) provides superior transient suppression performance compared to the original 59V specification. This is an improvement, not a compromise. All electrical parameters remain within acceptable ranges for general-purpose TVS applications.
Q: What is the difference between SMB10J33A-E3/52 and SMBJ33A variants? A: SMB10J33A-E3/52 (Vishay) maintains 1000W peak pulse power and 18.8A peak pulse current. SMBJ33A variants from other manufacturers (Good-Ark, Littelfuse, STMicroelectronics, Microchip) provide 600W peak pulse power and 11.3A to 11.8A peak pulse current. Both are suitable for general-purpose applications; selection depends on power dissipation requirements.
Q: Are all substitute parts compatible with the original DO-214AA (SMB) footprint? A: Yes. All listed substitute parts use the DO-214AA (SMB) package and are compatible with existing PCB layouts designed for the SMB10J33-E3/52.
Q: What is the significance of the E3 and A designations in part numbers? A: The E3 designation indicates a specific voltage tolerance grade. The A designation indicates a different tolerance grade. Both are acceptable substitutes when electrical parameters fall within the specified ranges. Consult individual datasheets for precise tolerance specifications.
Q: Which substitute part should I select for maximum temperature range? A: SMBJ33A-TP (Micro Commercial Co) provides the widest operating temperature range (-55°C to 175°C), offering additional thermal margin for high-temperature applications.
Q: Is SMBJ33E3/TR13 a better choice than SMBJ33A variants? A: SMBJ33E3/TR13 matches the original 59V clamping voltage specification. SMBJ33A variants provide lower clamping voltage (53.3V), which offers improved transient suppression. Selection depends on whether clamping voltage matching or improved suppression performance is prioritized.
Q: Are all substitute parts available in Tape & Reel (TR) packaging? A: Yes. All listed substitute parts are available in Tape & Reel packaging suitable for automated assembly processes.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts