Product Overview
Glass Passivated 200V 4A Bridge Rectifier - KBL-4 Through-Hole, Full-Wave AC/DC Conversion
Condition
Unused NOS. Sourced from an electronics distributor consolidating inventory. Black molded KBL-4 body with GI logo, date code 9120, and KBL02 markings legible on face; polarity symbol visible on lower corner; leads show light oxidation consistent with age. Verify suitability before use.
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Product Overview
General Instruments KBL02 - glass passivated single-phase bridge rectifier in the KBL-4 through-hole inline (SIP) package. Converts single-phase AC to full-wave DC at up to 200V peak reverse voltage and 4A continuous forward current. Four pins in a molded inline layout with polarity symbols stamped on the body for correct orientation during installation.
Key Features
- Maximum repetitive peak reverse voltage (VRRM): 200V
- Average rectified forward output current (IO): 4.0A
- Peak forward surge current (IFSM): 200A (8.3ms single half sine-wave)
- Maximum forward voltage drop (VF): 1.1V per diode at 4.0A
- Operating temperature range: -50°C to +150°C
- Package: KBL-4, 4-pin through-hole inline (SIP)
- Glass passivated junction construction
- Polarity symbols molded on body
Applications
- Repair tech pulling a failed bridge rectifier from a vintage stereo receiver and dropping a known-good NOS unit back in without modifying the board
- Hobbyist building a linear bench power supply and selecting the KBL02 for its 200V rating and familiar through-hole footprint
- Small shop maintaining a stock of common through-hole rectifiers for consumer electronics and home appliance board repairs
- Maker wiring up a low-voltage AC wall adapter output into a DC project circuit using the KBL-4 package as a compact full-wave bridge
- OEM technician keeping spare KBL02 units on hand to service older power supply designs where the original component spec is still on the BOM
Frequently Asked Questions
What is the maximum AC input voltage this rectifier can handle?
The KBL02 is rated for a maximum repetitive peak reverse voltage of 200V. For a standard sinusoidal AC input, this corresponds to a maximum RMS input voltage of approximately 140V AC. It is not rated for use on 240V RMS mains without appropriate design margin analysis.
Is this compatible with surface-mount PCB designs?
No. The KBL02 is a through-hole inline (SIP) package. It requires a PCB with four through-holes spaced to the KBL-4 footprint and is not compatible with surface-mount assembly without an adapter.
Can it be used in three-phase rectification circuits?
No. The KBL02 is a single-phase bridge rectifier. It is not suitable for three-phase AC rectification.
Is this suitable for high-frequency switching power supply applications?
The KBL02 is a standard recovery rectifier. It is not designed for high-frequency switching applications where fast or ultrafast recovery diodes are required.
What is included with this purchase?
The KBL02 rectifier component only. No PCB, hardware, or documentation included.
A NOS General Instruments bridge rectifier with a 1991 date code and the original GI shield logo still sharp on the body - some parts age quietly and stay exactly ready. Drop it in, get your DC, move on.
