SMC50J23A STMicroelectronics TVS Diode (Uni-directional) (Diodes Moulded) In Stock
The SMC50J23A is a 5000 W unidirectional transient voltage suppressor (TVS) diode from STMicroelectronics with a 23 V standoff voltage and 27 V nominal breakdown voltage. It clamps surges to a maximum 37.8 V, and is housed in a DO-214AB (SMC) surface-mount package for robust transient protection.
- Manufacturer
- STMicroelectronics
- Package
- Diodes Moulded
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SMC50J23A Datasheet PDF
- Category
- TVS Diode (Uni-directional)
- Price
- From $0.5870(MOQ 2500)
- Temp Range
- -55.0°C to 175.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 5000 W peak pulse power dissipation capability for protection against high-energy transient surges
- 23 V standoff voltage with 25.7 V to 28.4 V breakdown voltage range for 24 V rail protection
- Low maximum clamping voltage of 37.8 V limits let-through voltage on protected circuit nodes
- Unidirectional silicon TVS topology ensures low forward drop for single-polarity transient suppression
- DO-214AB (SMC) surface-mount package offers robust thermal and mechanical performance in production boards
Applications
The SMC50J23A is used for transient overvoltage protection on 24 V DC power supply rails in industrial equipment, motor drives, and solar inverters where voltage spikes from inductive switching can exceed safe device limits. It protects the input lines of DC-DC converters, PLCs, and communication interfaces against ESD, lightning-induced surges, and load-dump transients common in automotive and industrial environments. The 5000 W peak pulse rating also makes it suitable as a primary protection device on 24 V CAN bus and RS-485 communication line interfaces.
Specifications
| Factory Lead Time | 13Weeks |
| YTEOL | 8 |
| Breakdown Voltage-Max | 28.4V |
| Breakdown Voltage-Min | 25.7V |
| Breakdown Voltage-Nom | 27V |
| Clamping Voltage-Max | 37.8V |
| Configuration | SINGLE, 1 CHANNEL |
| Diode Element Material | SILICON |
| Diode Type | TRANS VOLTAGE SUPPRESSOR DIODE |
| JEDEC-95 Code | DO-214AB |
| JESD-30 Code | R-PDSO-C2 |
| Non-rep Peak Rev Power Dis-Max | 5000W |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Polarity | UNIDIRECTIONAL |
| Reference Standard | IEC-61000-4-2, 4-4, 4-5; MIL-STD-750; MIL-STD-883 |
| Rep Pk Reverse Voltage-Max | 23V |
| Reverse Current-Max | 0.2 µA |
| Reverse Test Voltage | 23V |
| Surface Mount | YES |
| Technology | AVALANCHE |
| Terminal Form | C BEND |
| Terminal Position | DUAL |
| Package | Diodes Moulded |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| 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 peak pulse power can SMC50J23A absorb and for how long?
The SMC50J23A is rated at 5000 W peak pulse power dissipation under an 8/20 µs test pulse waveform, as defined by IEC transient protection standards. This high energy handling capacity makes it suitable for protecting 24 V DC industrial circuits from lightning-coupled surges and inductive load-switching transients that can deliver hundreds of joules in microsecond timescales.
At what voltage does SMC50J23A clamp to protect downstream components on a 24 V rail?
The SMC50J23A clamps the protected node to a maximum clamping voltage of 37.8 V during a peak transient surge, limiting the overvoltage stress on downstream ICs and capacitors on the 24 V rail. The nominal breakdown voltage of 27 V ensures the TVS does not conduct during normal 24 V operation while still activating rapidly at surge voltages above the 23 V standoff threshold.
Which DO-214AB package does SMC50J23A use and why is it preferred in industrial power designs?
The SMC50J23A is housed in a DO-214AB (SMC) molded surface-mount package, which is larger than the SOD-123 or DO-214AC (SMA) but provides a significantly higher current-handling capability and better thermal resistance to PCB. The SMC package's robust copper lead frame and larger body allow the 5000 W peak pulse energy to be conducted to the ground plane without thermal runaway, critical in industrial 24 V protection circuits.
How does SMC50J23A compare to a lower-power TVS such as a 600 W SMA-packaged device for 24 V CAN bus protection?
While a 600 W SMA-packaged TVS meets the minimum requirements of IEC 61000-4-2 ESD testing at 8 kV contact discharge, the SMC50J23A's 5000 W peak pulse rating provides more than 8 times the surge absorption margin needed for 24 V CAN bus exposed to industrial or automotive load-dump transients up to 36 V. This wider margin reduces the risk of TVS degradation over the product lifetime in high-surge environments.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 2500+ | $0.6020 | $1505.00 |
| 5000+ | $0.5900 | $2950.00 |
| 10000+ | $0.5870 | $5870.00 |
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