Description
- Marking on Device: D15SB60, SIYU, JI36
- Device Type: Single-Phase, Full-Wave Bridge Rectifier
- Package: SIP-4P (Single In-Line Package, 4 Pins, with center mounting hole)
- Pin Configuration (left to right, as marked on body):
Pin Symbol Function 1 + DC Output (Positive) 2 ~ AC Input 3 ~ AC Input 4 − DC Output (Negative)
What This Component Does
This device converts an AC (alternating current) input into a pulsating DC (direct current) output. It packs four diodes internally in a bridge configuration, enabling full-wave rectification from a single component — both halves of the incoming AC waveform are converted into usable DC. It sits at the front end of a power supply, immediately after the transformer or AC input, and before the smoothing/filter capacitor stage.
Core Electrical Ratings
| Parameter | Symbol | Rating |
|---|---|---|
| Max Repetitive Reverse Voltage | VRRM | 600V |
| Max RMS Voltage | VRMS | 420V |
| Max DC Blocking Voltage | VDC | 600V |
| Average Forward Rectified Current (with heatsink) | Io | 15A |
| Average Forward Rectified Current (without heatsink) | Io | ~2–3A (derated) |
| Peak Forward Surge Current (8.3ms single half-sine) | IFSM | 300A (typical for this series) |
| Max Forward Voltage Drop | VF | ~1.0–1.1V |
| Max DC Reverse Current | IR | 5–10µA |
| Operating Junction Temperature | TJ | −55°C to +150°C |
| Storage Temperature | Tstg | −55°C to +150°C |
| Mounting Torque | — | ~0.8 N·m recommended |
Important Usage Notes (for support/troubleshooting reference)
- Heatsinking is essential for rated output: The 15A rating only applies when the device is properly mounted to a heatsink through the center hole. Without one, safe continuous current drops significantly — if a unit is failing under moderate load, check heatsink contact first.
- 600V VRRM is a hard limit: Reverse voltage transients above this (common with inductive loads such as motors, solenoids, or relay coils) can cause permanent damage. A snubber network or MOV across the AC input helps protect against this in real-world circuits.
- Inrush current at power-up is expected: A brief surge while charging input filter capacitors is normal and within the surge current rating, provided it's momentary and not sustained.
- AC input pins are non-polarized; DC output pins are not: The two "~" terminals can be wired in either orientation, but "+" and "−" DC outputs must be connected correctly to protect downstream components.
- Lower current rating than similar-looking parts: This is a 15A-class device — it looks nearly identical to higher-current siblings like the D25SB60, so double-check the exact part marking before substituting, as using an underrated part in a higher-current circuit is a common cause of premature failure.
Typical Applications
General-purpose AC-to-DC power supplies, small appliance power stages, battery chargers, LED drivers, and other moderate-current rectification circuits.
Package Includes
- 1 x D15SB60 Single-Phase Bridge Rectifier (SIP-4P)