Diode
1N4007
1A general-purpose rectifier diode, DO-41 — 1000V reverse rating, slow recovery.
1N4007 · Vishay
Overview
The workhorse rectifier. One amp average forward current, a 1000V peak reverse rating, and a forward drop of about 0.9–1.1V once it is actually passing that amp. Use it for mains-frequency rectification, reverse-polarity protection on a DC input, and — most often on a hobby board — as the flyback diode across a relay coil or small motor, where it clamps the inductive kick that would otherwise punch through whatever transistor just switched off. What it is not is fast: reverse recovery is on the order of microseconds, so it is the wrong part inside a switching regulator, where a Schottky like the 1N5819 belongs. The whole 1N400x family shares one package and one pinout and differs only in reverse voltage, so a 1N4007 substitutes for any of them.
Wiring tip: band marks the cathode — current flows from the unbanded end to the banded end
Pins & wiring
1N4007
DO-41
Physical pin order shown left to right.
All pins
Hover · click to selectSelected pin
ANODE
- Direction
- Passive
The unbanded end. Conventional current enters here.
Full pin table
| Pin | Name | Role | Direction | Note |
|---|---|---|---|---|
| 1 | Other | Passive | The unbanded end. Conventional current enters here. | |
| 2 | silk: band | Other | Passive | Marked with a painted band on the body. Fitting a rectifier backwards is the most common way to kill a supply rail, and the band is the only orientation cue the part gives you. |
Wiring examples
Flyback clamp across a relay coil
Diode sits directly across the coil, reverse-biased in normal operation, so it does nothing until the coil is switched off and its collapsing field drives the drain/collector node upward.
| 1N4007 pin | Connects to | Note |
|---|---|---|
| CATHODE | host Power (any matching pin) | To the coil's supply-side terminal (the + rail feeding the coil). |
| ANODE | 2N7000 · drain | To the switched side of the coil — the same node as the transistor's drain or collector. |
- Orientation is the whole point: cathode to the positive rail. Fitted the other way round the diode short-circuits the coil supply the instant power is applied.
- This clamps the spike but slows relay release. If drop-out time matters, add a series resistor or a zener in the clamp path.
Series reverse-polarity protection on a DC input
In line with the positive supply, so a reversed barrel jack simply blocks instead of destroying everything downstream.
| 1N4007 pin | Connects to | Note |
|---|---|---|
| ANODE | host Power (any matching pin) | From the raw DC input. |
| CATHODE | host Power (any matching pin) | To the board's supply rail. |
- Costs you the forward drop — about 1V at high current. On a 5V input that is a real bite, and it is why a P-channel MOSFET is the better choice when headroom is tight.
- The whole load current flows through the diode. Stay under 1A, and remember the rating assumes uncropped leads.
Specifications
Electrical
Performance
- Reverse Recovery Time
- —
Physical
- Package
- DO-41
- Mounting
- tht
Footprint
No independently verified physical footprint is on file for this part yet.
Alternatives
Similar parts
Does the same job with a different part. Expect wiring and library changes — a starting point, not a guarantee.
Switching or signal-level work rather than power rectification — far faster, but only good for a couple hundred milliamps.
Compare with 1N4007- Average forward current: 1 A → 150 mA — The 1N4148 cannot carry rectifier-level current. Substituting it into a supply path destroys it.
- Reverse recovery: microseconds (standard) → 4 ns — The 1N4148 is the faster part; this is the reason to reach for it.
Documents
Datasheets
Frequently asked questions
What voltage does the 1N4007 run at?
Banana Board does not have a verified operating voltage on file for the 1N4007 yet — check the datasheet in Documents before wiring it up.
How many pins does the 1N4007 have?
The 1N4007 has 2 pins. See the full pinout table in Pins & wiring for each pin's role.
Can I simulate the 1N4007 before ordering hardware?
Not yet — the 1N4007 does not have a live simulation model in Banana Board today, so validate the wiring here and test on real hardware.
Where is the 1N4007 datasheet?
Linked in the Documents section on this page, and cited on every spec that came from it.
Related references
Build it, do not just look it up
Describe your circuit in one sentence and Banana Board wires it to these exact pins, validates it, and lays out a fab-ready PCB.