SMBJ12A

P6SMB6.8CA is a Littelfuse bidirectional TVS diode in DO-214AA (SMB), tape and reel — for surge protection where the line swings both ways: AC-coupled interfaces and bipolar transients. 600 W peak pulse power with 10.5 V maximum clamping is the selection point: same 600 W class as the SMBJ12A on this site, but the CA suffix denotes bidirectional — it clamps in both directions, while the SMBJ12A is unidirectional for DC rails. Selection advice: the 6.8 in the code is the nominal breakdown voltage — 5.8 V standoff suits 5 V-class rails; do not confuse the A-suffixed unidirectional P6SMB6.8A with this CA bidirectional version. −65 °C to +150 °C. Littelfuse lists this part as Active through distribution. Parameters verified against Littelfuse documentation and distributor listings. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

SMBJ5.0A is a unidirectional transient-voltage suppressor diode from Littelfuse in a DO-214AA (SMB) package, for surge and ESD protection on power and signal lines. Its advantage is response speed: a TVS clamps overvoltage transients in picoseconds, protecting downstream ICs from ESD, inductive spikes and surge events that a fuse or PTC cannot catch. Selection advice: the 5.0A code defines the reverse standoff voltage — match it to your rail voltage, since too low a standoff clips normal operation and too high leaves no protection margin. Unidirectional versus bidirectional is a separate selection axis: confirm your line needs the unidirectional variant before substituting. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

SMAJ12A is a Littelfuse unidirectional TVS diode in DO-214AC (SMA) — 12 V reverse standoff, 400 W peak pulse power (10/1000 µs), for protecting 12 V rails and signal lines from ESD and surge transients. The SMA package is the selection point: 400 W protection in a compact surface-mount footprint — a drop-in upgrade path from through-hole TVS parts without board re-layout. Selection advice: the A suffix means unidirectional — for AC or bipolar signals use the SMAJ12CA bidirectional variant instead. Match the standoff voltage to the normal rail: 12 V standoff for a 12 V line; too high a standoff delays clamping, too low causes leakage at temperature. Littelfuse lists the SMAJ12A as Active. Evidence: Littelfuse data confirms unidirectional, 12 V VRWM, 400 W, DO-214AC (SMA) and Active status. Match the full SMAJ12A code — the CA suffix is a different (bidirectional) part. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

1N4001 is an onsemi standard rectifier diode — VRRM 50 V, 1 A average rectified current, DO-41 axial package. The 1N400x family is the selection point: the cheapest diode on earth for mains-frequency rectification and reverse-polarity protection — a jellybean part every lab stocks by the thousand. Selection advice: the 1N4001 is the 50 V bottom grade of the 1N4001–1N4007 family (50 V to 1000 V, same DO-41 package) — for mains work always specify the 1N4007 (1000 V); the 1N4001 suits low-voltage rails only. For switching supplies above a few kHz use a fast-recovery type instead — standard recovery overheats at high frequency. onsemi lists the 1N4001 as Active. Evidence: distributor data confirms onsemi 1N4001 Active, 50 V, 1 A, DO-41. Match the full 1N4001 code — siblings look identical. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

1N4002 is a 1 A standard-recovery rectifier diode from the 1N400x family — 100 V repetitive peak reverse voltage, 1 A average forward current, 30 A surge capability, axial DO-41 (DO-204AL) package, 1.1 V maximum forward voltage, -65 to +150 °C. The 100 V rating is the selection point: the economical choice for low-voltage rectifiers, relay flyback clamps and reverse-polarity protection where high blocking voltage is unnecessary. Selection advice: pick the voltage grade to match your peak reverse voltage with margin — 1N4004 (400 V) or 1N4007 (1000 V) are the higher-voltage neighbors in the same DO-41 footprint. For switching supplies use an ultrafast type like UF5408 instead, since this is a standard-recovery part. Evidence: Vishay 1N4001–1N4007 datasheet confirms 1 A, 100 V, 30 A surge, DO-41 and 1.1 V forward voltage. Match the full 1N4002 code — the digit sets the voltage rating. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

1N4003 is a general-purpose 1 A rectifier diode in DO-41 — 200 V repetitive peak reverse voltage, 1 A average rectified current, 30 A non-repetitive surge, 1.1 V maximum forward voltage at 1 A, 5 µA reverse leakage, -65 to +150 °C, through-hole axial. The 200 V rating is the selection point: the mid-voltage member of the 1N400x family — choose this grade when your circuit never sees more than 200 V, and step up to the 1N4007 for higher-voltage margins. Selection advice: standard recovery (>500 ns) suits mains-frequency rectification only, not fast switching — use an ultrafast diode for switch-mode outputs. The silver band marks the cathode. Evidence: manufacturer datasheets and distributor listings confirm 200 V, 1 A, 30 A surge and DO-41. Match the full 1N4003 code for voltage grade. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

1N4004 is a 1 A standard-recovery rectifier diode from the 1N400x family — 400 V repetitive peak reverse voltage, 1 A average forward current, 30 A surge capability, axial DO-41 (DO-204AL) package, 1.1 V maximum forward voltage, -65 to +150 °C. The 400 V rating is the selection point: the sweet spot for rectified 230 VAC mains with margin and for general-purpose rectification, relay flyback clamps and reverse-polarity protection. Selection advice: pick the voltage grade to match your peak reverse voltage with margin — 1N4002 (100 V), 1N4005 (600 V) or 1N4007 (1000 V) are the neighbors in the same DO-41 footprint. For switching supplies use an ultrafast type like UF5408 instead, since this is a standard-recovery part. Evidence: Vishay 1N4001–1N4007 datasheet confirms 1 A, 400 V, 30 A surge, DO-41 and 1.1 V forward voltage. Match the full 1N4004 code — the digit sets the voltage rating. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

1N4005 is a 1 A standard-recovery rectifier diode from the 1N400x family — 600 V repetitive peak reverse voltage, 1 A average forward current, 30 A surge capability, axial DO-41 (DO-204AL) package, 1.1 V maximum forward voltage, -65 to +150 °C. The 600 V rating is the selection point: the middle of the 1N4001–1N4007 voltage ladder, for mains-derived rectifiers, relay flyback clamps and reverse-polarity protection. Selection advice: pick the voltage grade to match your peak reverse voltage with margin — 1N4004 (400 V) or 1N4007 (1000 V) are the neighbors in the same DO-41 footprint. For switching supplies use an ultrafast type like UF5408 instead, since this is a standard-recovery part. Evidence: Vishay 1N4001–1N4007 datasheet confirms 1 A, 600 V, 30 A surge, DO-41 and 1.1 V forward voltage. Match the full 1N4005 code — the digit sets the voltage rating. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

1N4006 is a general-purpose 1 A rectifier diode in DO-41 — 800 V repetitive peak reverse voltage, 1 A average rectified current, 30 A non-repetitive surge, 1.1 V maximum forward voltage at 1 A, 5 µA reverse leakage, -65 to +150 °C, through-hole axial. The 800 V rating is the selection point: the mid-voltage member of the 1N400x family — choose this grade when your circuit never sees more than 800 V, and step up to the 1N4007 for higher-voltage margins. Selection advice: standard recovery (>500 ns) suits mains-frequency rectification only, not fast switching — use an ultrafast diode for switch-mode outputs. The silver band marks the cathode. Evidence: manufacturer datasheets and distributor listings confirm 800 V, 1 A, 30 A surge and DO-41. Match the full 1N4006 code for voltage grade. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

1N4007 is a 1 A, 1000 V general-purpose rectifier diode in a DO-41 axial package — the default choice for mains-frequency rectification, reverse-polarity protection and freewheeling in low-frequency circuits. Its advantage is the 1000 V rating at commodity pricing: one part number covers the full range of offline and low-voltage rectification tasks, simplifying spares. Selection advice: the 1N400x family spans 50 V (1N4001) to 1000 V (1N4007) in the same package — a lower-voltage sibling looks identical but will fail in a high-voltage circuit, so match the full 1N4007 code. For switching supplies above a few kHz, choose a fast-recovery type like the FR107 or UF4007 instead; standard-recovery diodes overheat at high frequency. As a jellybean part, require lot traceability against remarked stock. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.