SMBJ5.0A-F1-0000HF - 600W 5V TVS Diode SMB | Yangjie
MPN: SMBJ5.0A-F1-0000HF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.11 | $0.11 |
| 10 | $0.09 | $0.90 |
| 100 | $0.06 | $6.00 |
| 500 | $0.048 | $24.00 |
| 1,000 | $0.038 | $38.00 |
Drop-in alternatives for SMBJ5.0A-F1-0000HF — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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View Datasheet →SMBJ5.0A-F1-0000HF Maximum Ratings & Electrical Characteristics
| Peak Pulse Power Dissipation | 600 W (10/1000 us) |
| Reverse Standoff Voltage (VRWM) | 5 V |
| Breakdown Voltage (VBR) min | 6.4 V at 1 mA |
| Clamping Voltage (VC) max | 9.2 V at Ipp |
| Peak Pulse Current (Ipp) | 65.3 A |
| Polarity | Unidirectional |
| Package | DO-214AA (SMB) |
| Mounting Type | Surface Mount |
| Configuration | Single TVS, 2 terminals |
| Test Current for VBR | 1 mA |
| Halogen Free | Yes (HF suffix) |
| Number of Pins | 2 |
SMBJ5.0A-F1-0000HF Pin Configuration
| Pin 1 | Cathode — Cathode terminal (band-marked); connect to positive protected rail |
| Pin 2 | Anode — Anode terminal; connect to ground |
Peak Pulse Power vs Pulse Duration (estimated)
Typical Applications
SMBJ5.0A-F1-0000HF is suitable for 6 applications: 5 V DC Rail Protection, USB Port Surge Suppression, Automotive Secondary Protection, Telecom and Networking Line Cards, Industrial PLC I/O Protection, Consumer Appliance Power Entry.
5 V DC Rail Protection
The primary role of the SMBJ5.0A-F1-0000HF is guarding 5 V power rails in industrial controllers, set-top boxes, and consumer appliances. Its 5 V standoff matches the rail exactly, so the diode stays dormant during normal operation with only microamp-level leakage, while the 6.4 V breakdown threshold and 600 W surge rating absorb transients from inductive loads, wiring harness coupling, or supply faults. Placed at the point where the rail enters the board, it clamps positive surges to below 9.2 V, protecting regulators and ICs whose absolute maximum ratings typically sit near 6 to 7 V. The trade-off of unidirectional clamping is a forward drop of roughly 0.7 V on negative excursions, which is usually acceptable on grounded DC rails.
Recommended
USB Port Surge Suppression
USB VBUS is a nominally 5 V line exposed to hot-plug spikes, cable transients, and fault conditions from host or peripheral side, making the SMBJ5.0A-F1-0000HF a natural clamp choice. With a standoff of exactly 5 V and clamping at 9.2 V maximum, it protects downstream power switches and chargers ICs rated to withstand transient excursions above their DC limits. Per STMicroelectronics product data, the SMBJ series is designed to absorb ESD-type discharges conforming to IEC 61000-4-2 style events, so the part complements dedicated low-capacitance ESD arrays on the data lines. Placement directly at the connector with a short ground return is essential; even a few nanohenries of trace inductance adds L*di/dt overshoot on top of the 9.2 V clamp level during a 65 A-class surge.
Recommended
Automotive Secondary Protection
In automotive modules, clamped load-dump and switching transients can reach the 5 V sensor and communication rails, where the SMBJ5.0A-F1-0000HF provides secondary protection behind a primary front-end clamp. Its 600 W / 10x1000 us capability handles residual energy after primary suppression, and the halogen-free, glass-passivated construction suits harsh under-hood-adjacent environments. Designers must verify AEC-Q101 qualification status for the specific Yangjie ordering code before releasing to production, and derate peak power for elevated ambient temperature per the datasheet power-versus-temperature curve. Typical placement is on CAN/LIN transceiver supply pins and 5 V sensor excitation outputs, where the 9.2 V worst-case clamp exceeds normal operation but stays below transceiver transient ratings.
Recommended
Telecom and Networking Line Cards
Telecom line cards and networking equipment face lightning-induced surges and crosstalk from adjacent high-energy circuits, and the SMBJ5.0A-F1-0000HF provides bulk transient clamping on 5 V logic and interface supplies. The 65.3 A peak pulse current capability at 9.2 V clamping gives substantial margin for multi-strike events, and the low profile DO-214AA package suits high-density line-card layouts. Because telecom standards often require staged protection, this TVS works as the secondary stage after gas discharge tubes or series resistors on exposed lines. The key design constraint is keeping the loop from connector to TVS to ground plane short and wide; at 65 A surge levels, one inch of narrow trace adds significant voltage overshoot that the downstream IC then sees.
Recommended
Industrial PLC I/O Protection
PLC digital and analog I/O modules routinely experience field-wiring transients from contactor coils, long cable runs, and ground potential differences, and the SMBJ5.0A-F1-0000HF clamps these events on 5 V internal logic rails and sensor supply outputs. The unidirectional topology suits grounded DC systems, clamping positive spikes by avalanche at 9.2 V maximum and negative spikes by forward conduction. In PLC designs, one TVS per module inlet plus individual clamps at sensitive IC pins provides defense in depth. The 600 W rating covers the 10/1000 us standard surge waveform; for repetitive events, designers should check average power duty cycle, since the part is optimized for transients rather than continuous dissipation, and sustained clamping will require thermal derating or a series current-limiting element.
Recommended
Consumer Appliance Power Entry
Power entry sections of set-top boxes, small appliances, and LED drivers use the SMBJ5.0A-F1-0000HF on the low-voltage secondary side to catch switching transients and cable-induced surges before they reach MCUs and interface ICs. Cost sensitivity is high in this segment, and the Yangjie reel-code variant offers competitive per-unit pricing at volume while remaining footprint-compatible with Littelfuse, Vishay, and Diodes equivalents if second sourcing becomes necessary. The 5 V standoff matches common secondary rails, and the surface-mount DO-214AA package flows through standard reflow assembly with no special handling. Designers should place the TVS after the bridge or secondary rectifier and before bulk capacitor filtering to give the clamp the first shot at incoming transients.
Recommended
Recommended Products Summary
Engineering reference data for SMBJ5.0A-F1-0000HF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SMBJ5.0A-13-F | SMBJ5.0A-E3/52 | SMBJ5.0A (Littelfuse) | SMBJ5.0A (Bourns) | SMBJ5.0A (Semtech) |
|---|---|---|---|---|---|---|
| Package | DO-214AA (SMB) | DO-214AA (SMB) - same | DO-214AA (SMB) - same | DO-214AA (SMBJ) - same | DO-214AA (SMB) - same | DO-214AA (SMB) - same |
| Brand | Yangjie (Yangzhou Yangjie) | Diodes Incorporated | Vishay Intertechnology | Littelfuse | Bourns | Semtech |
| Peak Pulse Power | 600 W | 600 W | 600 W | 600 W | 600 W | 600 W |
| Reverse Standoff Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Clamping Voltage (max) | 9.2 V | 9.2 V | 9.2 V | 9.2 V | 9.2 V | 9.2 V |
| Peak Pulse Current | 65.3 A | [DATA_NEEDED] | [DATA_NEEDED] | 65.3 A | 65.2 A | 65.2 A |
| Breakdown Voltage (min) | 6.4 V | 6.4 V | 6.4 V | 6.4 V | 6.4 V | 6.4 V |
| Polarity | Unidirectional | Unidirectional | Unidirectional | Unidirectional | Unidirectional | Unidirectional |
| Halogen Free | Yes (HF suffix) | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Exact 5 V standoff for tight 5 V rail protection (vs SMBJ5.0A-E3/52)
- Halogen-free construction as standard (vs SMBJ5.0A (Littelfuse))
- Matched Ipp rating with market-leading brands (vs SMBJ5.0A (Bourns))
Design Notes
Minimize the loop inductance between the surge source, the SMBJ5.0A-F1-0000HF, and ground. At the rated 65.3 A peak pulse current, even 10 nH of trace inductance adds several volts of overshoot on top of the 9.2 V clamp (estimated: V = L*di/dt with a 1 us rise). Place the TVS within a few millimeters of the connector or supply entry, use wide (at least 2 mm) traces, and stitch multiple vias to the ground plane at the anode pad. The DO-214AA end terminations are large specifically to conduct surge current into copper - do not neck the traces down near the pads.
Respect the difference between pulse power and continuous power. The 600 W rating applies only to a 10/1000 us exponential pulse; the device cannot dissipate anywhere near that continuously. Estimated: for repetitive events, compute average power as E_pulse * event_rate and keep it within the steady-state dissipation of the SMB package (roughly 1-2 W class with good copper). If the circuit can clamp for extended durations, such as a sustained overvoltage on a 5 V rail, add series impedance (ferrite, resistor, or PTC) so the TVS conducts briefly rather than continuously.
The most common selection error is using the SMBJ5.0A on a rail whose tolerance exceeds 5 V. Many 5 V supplies regulate to 5 V plus 5 percent = 5.25 V, which already exceeds the standoff, raising leakage and shifting clamping behavior. Verify the worst-case rail voltage including tolerance, ripple, and fault conditions before choosing the 5 V standoff variant; select a higher-standoff part (for example SMBJ5.5A or SMBJ6.0A) if needed. Also verify polarity during assembly: reversing a unidirectional TVS forward-biases it across the supply and short-circuits the rail at power-up.
Compliance Information
Halogen-free is indicated by the HF suffix in the Yangjie ordering code. RoHS/REACH status must be confirmed against the official Yangjie datasheet for this exact ordering code; not verified in provided web data.
