Product Overview
150pF 1KV Ceramic Capacitor, Marked 151K, 10% Tolerance, Radial Through-Hole
Condition
New, unused shelf stock. The photographed sample shows a blue coated ceramic body printed in black with a single letter B above the value code 151K and the voltage 1KV on the line below. Both leads are bare wire with no solder, no tarnish and no flux residue, and each carries a factory-style kink partway down that stands the body off the board and sets the lead spacing. No chips, cracks or coating damage are visible on the piece shown. The sample was placed on a fingertip in one photo and on clear crinkled plastic sheeting in the other purely for the camera. The photographed piece is representative of the 82 on hand, not a guarantee of identical printing on every one.
Same or next business day shipping from our Idaho warehouse. Honest pricing, no nonsense.
Online since 1999. We are here for our customers, with a no-hassle satisfaction guarantee.
Product Overview
This is a small radial-lead ceramic capacitor rated 150pF at 1KV with a 10% tolerance, marked on the body in standard EIA shorthand as 151K: the first two digits are significant, the third is the multiplier, and the K suffix is the 10% tolerance class. It is the kind of low-value, high-voltage ceramic that shows up in snubbers, RF tank and coupling positions, ignition and flyback circuits, and anywhere a few hundred volts of headroom matters more than a large capacitance. The body is a coated ceramic in the familiar blue finish, and the two bare leads come preformed with a shoulder kink so the part seats at a consistent height on a through-hole board. The letter B above the value code is a maker or dielectric code we cannot decode with confidence, and the dielectric class is not printed anywhere on the part. Not confirmed - verify the temperature coefficient against the datasheet before use in a timing or tuned circuit.
Key Features
- Capacitance: 150pF, coded 151 on the body
- Tolerance: 10%, the K suffix in the 151K marking
- Voltage rating: 1KV as printed on the part
- Dielectric: ceramic, class not printed and not confirmed
- Mounting: radial through-hole, two leads
- Leads: bare wire, factory kink for standoff height
- Body marking: B over 151K over 1KV, black print on a blue coated body
- Condition: new and unused, sold each
Applications
- Repair technician rebuilding a tube amplifier and needing a small coupling or grid-stopper cap that will not flash over on a high-voltage rail
- Power electronics engineer laying out an RC snubber across a switch or a transformer winding where the transient sits well above a 500V part
- Ham radio builder tuning an RF tank or antenna network and wanting a low-value ceramic with real voltage headroom
- Bench hobbyist restoring older instrumentation and matching an original 150pF ceramic in the same radial footprint
Frequently Asked Questions
What does the marking 151K actually decode to?
151 is the standard three-digit ceramic code: 15 followed by one zero, which is 150 picofarads. The K is the tolerance letter for 10%. The 1KV on the second line is the working voltage rating printed by the manufacturer.
Is this a COG/NPO part or a high-K dielectric?
The part does not say, and we are not going to guess. There is no temperature-coefficient marking anywhere on the body. If your circuit is a filter, oscillator or anything where drift matters, treat the dielectric class as unconfirmed and verify against the datasheet before you commit the design.
Why are the leads bent partway down?
Both leads carry a kink a few millimeters below the body. That is a preformed standoff crimp, done at the factory so the part sits at a fixed height above the board and the lead spacing lands on the hole pattern. It is not damage and it is not evidence of a prior installation - the leads are bare wire with no solder anywhere on them.
Will I get the exact capacitor in the photographs?
Not necessarily. There are 82 of these on the shelf. The photographed piece is representative of what is on hand; printing position and lead forming can vary slightly from one piece to the next. What is fixed is the value, the tolerance and the voltage rating.
Why buy the few I need here instead of a bag of 100 somewhere else?
Because most people rebuilding one board need two or three of these, not a hundred. We sell them each out of 82 in stock, so you order the count your repair actually calls for and the rest stays on our shelf instead of in your drawer. Shipping is $8 flat rate and goes free once your order passes $28, so it is worth rounding out the cart with the other odds and ends the job needs. Orders leave our Idaho warehouse the same or next business day.
A thousand volts of standoff in a body smaller than a pea, and the whole job of it is to say no at exactly the wrong moment for a transient. Put a couple in the drawer and the next arcing snubber becomes a five minute fix instead of a parts order.
