SMBJ28CA-TR STMicroelectronics TVS Diode (Bi-directional) (Other) In Stock
SMBJ28CA-TR is a bidirectional TVS diode in SMB (DO-214AA) package, rated for 28 V standoff voltage with 45.4 V clamping voltage and 13.8 A peak pulse current. Designed for transient overvoltage protection in consumer electronics, automotive, and industrial circuits.
- Manufacturer
- STMicroelectronics
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SMBJ28CA-TR Datasheet PDF
- Category
- TVS Diode (Bi-directional)
- Price
- From $0.0653(MOQ 1)
- Temp Range
- -55.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Bidirectional TVS diode with 28 V standoff voltage
- 45.4 V clamping voltage at 13.8 A peak pulse current
- SMB (DO-214AA) surface-mount package
- Breakdown voltage range 31.1 V to 32.7 V
- Silicon transient voltage suppressor for ESD protection
- Tape-and-reel packaging for automated assembly
Applications
SMBJ28CA-TR is used for transient overvoltage protection in power supply lines, industrial I/O interfaces, and automotive electronics operating at 28 V rails. It protects sensitive components from ESD and lightning-induced surges in communication equipment, motor control boards, and battery management systems.
Specifications
| Reach Compliance Code | Not Compliant |
| Factory Lead Time | 13Weeks |
| YTEOL | 6 |
| Breakdown Voltage-Min | 31.1V |
| Breakdown Voltage-Nom | 32.7V |
| Clamping Voltage-Max | 59V |
| Configuration | SINGLE, 1 CHANNEL |
| Diode Element Material | SILICON |
| Diode Type | TRANS VOLTAGE SUPPRESSOR DIODE |
| JEDEC-95 Code | DO-214AA |
| JESD-30 Code | R-PDSO-C2 |
| JESD-609 Code | e3 |
| Non-rep Peak Rev Power Dis-Max | 600W |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Polarity | BIDIRECTIONAL |
| Qualification Status | Not Qualified |
| Reference Standard | IEC-61000-4-2, 4-4, 4-5; MIL-STD-750; MIL-STD-883G |
| Rep Pk Reverse Voltage-Max | 28V |
| Reverse Current-Max | 0.2 µA |
| Reverse Test Voltage | 28V |
| Surface Mount | YES |
| Technology | AVALANCHE |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | C BEND |
| Terminal Position | DUAL |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.50 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What clamping voltage does SMBJ28CA-TR provide at peak pulse current?
The SMBJ28CA-TR clamps at a maximum of 45.4 V when subjected to a peak pulse current of 13.8 A, ensuring that downstream components in 28 V systems are not exposed to damaging overvoltages during transient events.
Which PCB footprint does the SMBJ28CA-TR use, and how does it affect board layout?
The SMBJ28CA-TR uses the SMB (DO-214AA) surface-mount footprint, which has a compact body that fits standard 2-pad SMB land patterns. Its small size allows placement close to protected nodes, minimizing parasitic inductance and improving transient response on densely populated PCBs.
Can SMBJ28CA-TR protect automotive 24 V battery bus lines from load-dump transients?
Yes, the SMBJ28CA-TR is well suited for 24 V automotive bus protection. With a 28 V standoff voltage and a breakdown voltage minimum of 31.1 V, it remains non-conducting during normal 24 V operation and activates to clamp load-dump spikes, which can exceed 40 V, within a peak pulse current rating of 13.8 A.
How does the bidirectional configuration of SMBJ28CA-TR differ from a unidirectional TVS diode?
A bidirectional TVS like the SMBJ28CA-TR protects against both positive and negative transients by conducting in either polarity, making it suitable for AC signal lines and reverse-polarity conditions. A unidirectional device clamps only in one direction and is used on DC rails where reverse voltage is not expected.
Is SMBJ28CA-TR available in tape-and-reel format for high-volume automated assembly?
Yes, the -TR suffix on SMBJ28CA-TR indicates tape-and-reel packaging. This format provides continuous 3000-piece reels compatible with standard pick-and-place equipment, enabling high-volume automated SMT assembly with a lead time of approximately 13 weeks from STMicroelectronics.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.0750 | $0.07 |
| 10000+ | $0.0660 | $659.60 |
| 20000+ | $0.0656 | $1312.40 |
| 40000+ | $0.0653 | $2611.20 |
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