SMCJ33CA-E3/57T Vishay TVS Diode (Bi-directional) (Diodes Moulded Non Polarised) In Stock
Vishay SMCJ33CA-E3/57T is a bi-directional silicon TVS diode rated at 1500 W peak pulse power in a 2-pin SMC package with a 33 V standoff voltage and 53.3 V maximum clamping voltage. Designed for excellent transient suppression on AC and bipolar signal lines. Available from stock with worldwide shipping.
- Manufacturer
- Vishay
- Package
- Diodes Moulded Non Polarised
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SMCJ33CA-E3/57T Datasheet PDF
- Category
- TVS Diode (Bi-directional)
- Temp Range
- -55.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1500 W peak pulse power (10/1000 µs waveform) with 53.3 V maximum clamping voltage for robust transient protection
- Bi-directional configuration handles both positive and negative transients on AC lines, RS-485 buses, and motor-drive outputs
- SMC (DO-214AB) surface-mount package provides a compact 2-pin footprint with excellent thermal dissipation for high-energy surges
Applications
The SMCJ33CA-E3/57T is used to protect AC power lines, industrial field-bus interfaces, and motor-drive outputs operating at up to 33 V standoff from lightning-induced surges, EFT bursts, and inductive switching transients. Its bi-directional 1500 W peak capability meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial equipment. The SMC package's low inductance and large junction area make it suitable for board-level protection in variable-speed drives, PLC output modules, and renewable energy inverters.
Specifications
| Factory Lead Time | 11Weeks |
| YTEOL | 7 |
| Additional Feature | EXCELLENT CLAMPING CAPABILITY |
| Breakdown Voltage-Max | 40.6V |
| Breakdown Voltage-Min | 36.7V |
| Breakdown Voltage-Nom | 38.65V |
| Clamping Voltage-Max | 53.3V |
| Configuration | SINGLE |
| Diode Element Material | SILICON |
| Diode Type | TRANS VOLTAGE SUPPRESSOR DIODE |
| JEDEC-95 Code | DO-214AB |
| JESD-30 Code | R-PDSO-C2 |
| JESD-609 Code | e3 |
| Non-rep Peak Rev Power Dis-Max | 1500W |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Polarity | BIDIRECTIONAL |
| Power Dissipation-Max | 6.5W |
| Qualification Status | Not Qualified |
| Reference Standard | UL RECOGNIZED |
| Rep Pk Reverse Voltage-Max | 33V |
| Surface Mount | YES |
| Technology | AVALANCHE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | C BEND |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Diodes Moulded Non Polarised |
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, Taiwan |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the peak pulse power rating of the SMCJ33CA-E3/57T and under what waveform condition is it specified?
The SMCJ33CA-E3/57T is rated at 1500 W peak pulse power under a 10/1000 µs standard test waveform. This rating represents the maximum transient energy the device can absorb in a single pulse without damage, making it suitable for protecting 33 V standoff circuits against lightning-coupled surges and industrial EFT events specified by IEC 61000-4-5.
What breakdown voltage range and clamping voltage does the SMCJ33CA-E3/57T specify?
The SMCJ33CA-E3/57T has a nominal breakdown voltage of 38.65 V, with a minimum of 36.7 V and a maximum of 40.6 V at the test current. When clamping a transient, the maximum clamping voltage (VCL) is 53.3 V, ensuring downstream circuitry rated above 53.3 V remains protected during a 1500 W peak surge event.
Why choose a bi-directional TVS like the SMCJ33CA-E3/57T over a unidirectional device for RS-485 line protection?
RS-485 differential buses operate with signal swings in both positive and negative polarities relative to ground, meaning transients can appear with either polarity. A unidirectional TVS conducts in only one direction and may not clamp reverse-polarity surges below 53.3 V. The SMCJ33CA-E3/57T's bi-directional silicon junction symmetrically suppresses both polarities, providing complete transient protection across the full ±33 V differential range without requiring two back-to-back unidirectional diodes per line.
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