Request Quote
(Ships tomorrow)
SMBJ28CA-TP Equivalent & Substitute Parts
Part Overview
The SMBJ28CA-TP is a transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional zener diode operates with a 28V reverse standoff voltage and provides 45.4V clamping at peak pulse current, housed in a DO-214AA (SMB) package. The part is active in production status and RoHS3 compliant. Substitute parts are identified to address inventory availability, alternative sourcing requirements, or specific manufacturing specifications while maintaining electrical and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 28 | V |
| Voltage - Breakdown (Min) | 31.1 | V |
| Voltage - Clamping (Max) @ Ipp | 45.4 | V |
| Current - Peak Pulse (10/1000µs) | 13.2 | A |
| Power - Peak Pulse | 600 | W |
| Package / Case | DO-214AA, SMB | — |
| Mounting Type | Surface Mount | — |
| Operating Temperature Range | -55°C ~ 175°C | TJ |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the SMBJ28CA-TP are qualified based on the following critical parameters that determine functional equivalence:
- Voltage - Reverse Standoff (Typ): 28V
- Voltage - Breakdown (Min): 31.1V
- Voltage - Clamping (Max) @ Ipp: 45.4V
- Current - Peak Pulse (10/1000µs): 13.2A minimum
- Power - Peak Pulse: 600W
- Package / Case: DO-214AA, SMB
- Mounting Type: Surface Mount
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level: 1 (Unlimited)
All identified substitutes maintain these core electrical specifications and package requirements. Variations in peak pulse current (13.2A to 13.8A) and operating temperature ranges remain within acceptable tolerance for general-purpose TVS applications. All substitute parts are active in production status and comply with RoHS3 and REACH requirements.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Voltage - Reverse Standoff (V) | Voltage - Breakdown (V) | Voltage - Clamping (V) | Current - Peak Pulse (A) | Power - Peak Pulse (W) | Operating Temperature (°C) | Package | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| SMBJ28CA-TP | Micro Commercial Co | 28 | 31.1 | 45.4 | 13.2 | 600 | -55 ~ 175 | DO-214AA, SMB | ROHS3 Compliant |
| SMBJ28CA | MDD | 28 | 31.1 | 45.4 | 13.3 | 600 | -50 ~ 150 | DO-214AA, SMB | ROHS3 Compliant |
| SMBJ28CA-13-F | Diodes Incorporated | 28 | 31.1 | 45.4 | 13.2 | 600 | -55 ~ 150 | DO-214AA, SMB | ROHS3 Compliant |
| SMBJ28CA-TR | STMicroelectronics | 28 | 31.1 | 45.4 | 13.8 | 600 | -55 ~ 150 | DO-214AA, SMB | ROHS3 Compliant |
| SZ1SMB28CAT3G | Littelfuse Inc. | 28 | 31.1 | 45.4 | 13.2 | 600 | -65 ~ 150 | DO-214AA, SMB | ROHS3 Compliant |
Engineering Selection Recommendations
All identified substitute parts maintain active production status and full RoHS3 compliance. Selection among substitutes should be based on:
SMBJ28CA (MDD): Direct electrical equivalent with 13.3A peak pulse current. Operating temperature range of -50°C to 150°C is suitable for applications not requiring the extended -55°C lower limit of the original part.
SMBJ28CA-13-F (Diodes Incorporated): Exact electrical match to the original SMBJ28CA-TP with identical 13.2A peak pulse current and -55°C lower operating temperature limit. Tape & Reel packaging matches the original specification.
SMBJ28CA-TR (STMicroelectronics): Highest peak pulse current rating at 13.8A, providing additional margin for transient suppression. Suitable for applications requiring enhanced pulse handling capability within the same voltage class.
SZ1SMB28CAT3G (Littelfuse Inc.): Automotive-grade part with AEC-Q101 qualification and extended lower operating temperature of -65°C. Includes specified capacitance of 310pF @ 1MHz. Appropriate for automotive and high-reliability applications.
Frequently Asked Questions (FAQ)
Q: Can SMBJ28CA-TP be directly replaced with any of these substitutes?
A: Yes, all listed substitutes are electrically and mechanically compatible. They maintain identical voltage specifications (28V standoff, 31.1V breakdown, 45.4V clamping) and the same DO-214AA SMB package. Peak pulse current variations (13.2A to 13.8A) remain within acceptable tolerance for general-purpose TVS applications.
Q: What is the difference between the operating temperature ranges?
A: The original SMBJ28CA-TP operates from -55°C to 175°C. Substitutes vary: MDD version operates -50°C to 150°C, Diodes Incorporated and STMicroelectronics versions operate -55°C to 150°C, and Littelfuse operates -65°C to 150°C. Selection depends on application temperature requirements.
Q: Why does the Littelfuse part (SZ1SMB28CAT3G) have different specifications?
A: The SZ1SMB28CAT3G is automotive-qualified (AEC-Q101) with extended lower temperature rating (-65°C) and specified capacitance (310pF @ 1MHz). It maintains all critical electrical parameters for substitution but is designed for automotive and high-reliability applications.
Q: Are all substitutes RoHS3 compliant?
A: Yes, all substitute parts listed are RoHS3 compliant and REACH unaffected, matching the compliance status of the original SMBJ28CA-TP.
Q: What packaging options are available?
A: All parts use DO-214AA (SMB) surface-mount package. The original SMBJ28CA-TP is supplied in Tape & Reel (TR) packaging. Substitute parts may be available in alternative packaging formats (Cut Tape, Digi-Reel) depending on manufacturer and distributor inventory.
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