SMBJ58CA LITTELFUSE TVS Diode (Bi-directional) (Diodes Moulded Non Polarised) In Stock
Littelfuse SMBJ58CA is a 600 W bi-directional TVS diode in a DO-214AA (SMB) package, with a 58 V standoff voltage, 64.4–71.2 V breakdown range, and 93.6 V maximum clamping voltage for AC line and bi-directional transient protection. Available globally through major distributors.
- Manufacturer
- LITTELFUSE
- Package
- Diodes Moulded Non Polarised
- Pin Count
- 2
- Lifecycle
- TRANSFERRED
- Datasheet
- SMBJ58CA Datasheet PDF
- Category
- TVS Diode (Bi-directional)
- Price
- From $0.0203(MOQ 1)
- Temp Range
- -65.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 600 W peak pulse power dissipation (10/1000 µs) providing robust transient energy absorption for AC and bi-directional signal protection
- Bi-directional (CA) configuration with 58 V standoff voltage and maximum clamping voltage of 93.6 V at peak pulse current
- DO-214AA (SMB) surface-mount package offering compact footprint with excellent thermal dissipation for automated reflow assembly
- Silicon TVS technology with excellent clamping capability and fast sub-picosecond response time limiting transient overvoltage spikes
Applications
The SMBJ58CA is used to protect AC power supply inputs, industrial motor driver circuits, and communication interface lines against ESD, lightning-induced surges, and inductive load switching transients in the 58 V nominal voltage range. Its bi-directional characteristic makes it suitable for protecting both polarities of AC signal lines or unpolarized DC rails in equipment such as HVAC controllers, building automation systems, and RS-485 communication nodes. The SMB package supports high-volume automated SMT assembly and enables compact protection circuit layouts.
Specifications
| Pbfree Code | No |
| YTEOL | 7 |
| Additional Feature | EXCELLENT CLAMPING CAPABILITY |
| Breakdown Voltage-Max | 71.2V |
| Breakdown Voltage-Min | 64.4V |
| Breakdown Voltage-Nom | 67.8V |
| Clamping Voltage-Max | 93.6V |
| Configuration | SINGLE |
| 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 |
| Power Dissipation-Max | 5W |
| Qualification Status | Not Qualified |
| Reference Standard | IEC-61000-4-2, 4-4; UL RECOGNIZED |
| Rep Pk Reverse Voltage-Max | 58V |
| Reverse Current-Max | 1 µ A |
| Reverse Test Voltage | 58V |
| Surface Mount | YES |
| Technology | AVALANCHE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | C BEND |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| 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, Philippines |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SMBJ58CA:
Frequently Asked Questions
What peak pulse power does SMBJ58CA handle, and over what pulse duration?
The SMBJ58CA is rated for 600 W peak pulse power dissipation under a standard 10/1000 µs waveform. This energy handling capacity allows it to absorb transient surges generated by lightning coupling, inductive load switching, or electrostatic discharge events without failing, protecting downstream circuits on 58 V nominal voltage rails.
Why would a designer select the bi-directional SMBJ58CA instead of a unidirectional SMBJ58A for an AC protection circuit?
The bi-directional (CA) configuration clamps voltage transients on both the positive and negative half-cycles of an AC waveform, whereas the unidirectional SMBJ58A only clamps positive transients. For AC power line protection or unpolarized DC bus protection at 58 V standoff, the SMBJ58CA with a maximum clamping voltage of 93.6 V is necessary to suppress surges from both directions without requiring two discrete TVS diodes.
What is the breakdown voltage range of SMBJ58CA, and how does it relate to the standoff voltage?
The SMBJ58CA has a minimum breakdown voltage of 64.4 V and a maximum of 71.2 V, with a nominal of 67.8 V at 1 mA test current. The 58 V standoff voltage ensures the device remains in a non-conducting state during normal operation, while the 64.4 V minimum breakdown guarantees conduction begins before destructive overvoltage levels can damage sensitive 58 V-rated downstream components.
How does the DO-214AA (SMB) package of SMBJ58CA benefit PCB layout compared to through-hole TVS alternatives?
The DO-214AA surface-mount package reduces PCB footprint by approximately 60 percent compared to axial through-hole TVS diodes, and its low inductance SMB body minimizes stray inductance in the clamping loop. This enables placement within 5 mm of the protected node, reducing the effective surge impedance and improving clamping performance at fast transient rise times below 1 ns.
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About LITTELFUSE
LITTELFUSE is a leading electronic component manufacturer. FindMyChip sources LITTELFUSE ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.0763 | $0.08 |
| 100+ | $0.0726 | $7.26 |
| 1000+ | $0.0685 | $68.50 |
| 1965+ | $0.0255 | $50.11 |
| 4765+ | $0.0210 | $100.07 |
| 7390+ | $0.0203 | $150.02 |
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