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1N4007 Diode: Features, Working Principle, Specifications & Applications
- Part No.:
- 1N4007
- Manufacturer:
- Diotec Semiconductor
- Category:
- Product information
- Package:
- DO-204AC, DO-41, Axial
- Datasheet:
-
1N4007.pdf
- Description:
- DIODE GEN PURP 1000V 1A DO204AC
- Payment:
- Shipping:
Article Details
1N4007 Pinout
Anode (A) - positive terminal; Cathode (K) - negative terminal marked by a painted band. Current conducts from anode to cathode, blocking in reverse.
Specifications
| Parameter | Value |
|---|---|
| Part Number | 1N4007 |
| Type | General-Purpose Rectifier Diode |
| Package | DO-41 (Axial) |
| Max Repetitive Peak Reverse Voltage (VRRM) | 1000 V |
| Average Forward Rectified Current (IF(AV)) | 1 A |
| Peak Surge Current (IFSM, 8.3 ms) | 30 A |
| Forward Voltage (VF @ 1 A) | ≈ 1.1 V |
| Typical Reverse Recovery Time (trr) | ~2 µs (slow recovery) |
| Operating Junction Temperature | −55 °C to +150 °C |
| Polarity Marking | Cathode band |
| Mounting | Through-hole |
Working Principle
The 1N4007 is a PN junction that allows current in one direction only. Under forward bias, it conducts with ~0.7–1.1 V drop. Under reverse bias, it blocks current until breakdown near its VRRM (1000 V). This one-way behavior enables efficient AC-to-DC rectification.
Circuit Symbol
----|>|----
A K Key Features
- High reverse voltage-handles up to 1000 V.
- 1 A average current with strong surge tolerance (30 A).
- Low leakage for stable DC outputs.
- Rugged, inexpensive, widely available.
1N4007 vs Other 1N400x Series
| Model | Reverse Voltage (VRRM) | Average Current | Typical Use |
|---|---|---|---|
| 1N4001 | 50 V | 1 A | Low-voltage DC supplies |
| 1N4002 | 100 V | 1 A | Wall adapters |
| 1N4004 | 400 V | 1 A | Up to 230 V rectifiers |
| 1N4007 | 1000 V | 1 A | Universal / mains |
Compatibility: 1N4007 can replace any lower-voltage member of the family.
Applications
- AC/DC rectifier in adapters and linear power supplies.
- Bridge rectifier (x4 diodes) for full-wave conversion.
- Flyback/free-wheeling protection for relays and coils.
- Polarity protection at DC inputs.
- Clamping & limiting with zeners/capacitors.
- General DIY and educational projects.
How to Test a 1N4007 with a Multimeter
- Set the meter to Diode Test mode.
- Red probe to Anode, black to Cathode → reading ~0.6–0.7 V (forward drop).
- Reverse the probes → meter shows OL (no conduction).
If it conducts both ways, the diode is shorted; if it shows OL both ways, it's open-replace it.
Circuit Example: Full-Wave Bridge Rectifier
AC ~ ────┬────|>|────┬──── +VDC
| |
| |
└────|<|────┴──── 0V Four 1N4007 diodes form a bridge that rectifies both halves of the AC waveform for smoother DC (with a filter capacitor).
Equivalents & Replacements
| Model | Notes |
|---|---|
| UF4007 | Fast-recovery (≈50 ns); same voltage & current ratings |
| 1N5408 | 3 A / 1000 V (higher current) |
| 1N5399 | 1.5 A / 1000 V |
| HER108 | Ultra-fast rectifier |
| BY255 | 3 A / 1300 V, high-voltage option |
Frequently Asked Questions
What is the maximum voltage rating of 1N4007?
1000 V (VRRM).
Can 1N4007 replace 1N4001 or 1N4004?
Yes. 1N4007 is backward-compatible with lower-voltage 1N400x parts.
Is 1N4007 good for high-frequency switching?
No. Use UF4007 or a Schottky for fast switching/SMPS.
How do I identify the cathode?
The striped band on the body marks the cathode (−).
1N4007 Specifications
- Attributes
- Property Value
- Manufacturer
- Diotec Semiconductor
- Series:
- -
- Package/Case:
- DO-204AC, DO-41, Axial
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 1.5 µs
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-41)
- Operating Temperature - Junction:
- -50°C ~ 175°C
- Category:
- Product information
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