Product Overview
Bourns J.W. Miller 70F154AI RF Choke, 150 uH
Condition
New. The photo shows a representative unit from our stock. 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
Axial bobbin-wound chokes held in white paper tape strips, copper-coloured winding between dark end flanges, leads bent to lie flat, with no marking, colour code or label visible in these photos. Bourns bought the J.W. Miller Magnetics division from Bell Industries and still sells the line under that name, which is why the correct brand here is Bourns (J.W. Miller) and why the field is no longer blank. Bourns discontinued nearly the whole 70F axial line, 70F154AI-RC included, with last time buy 7 November 2016 and last ship 7 May 2017, and named no replacement, so shelf stock is where these come from now.
Key Features
- Inductance per the Bourns J.W. Miller selection catalog 70F selector row: 150 uH
- Rated current per the same row: 135 mA
- DC resistance per the same row: 8.16 ohms
- Coil type per the same row: V, varnished
- Termination: axial leads, through-hole PCB mount
- As photographed: held in white paper tape strips; no carton or bag label is in frame
- Status per Bourns obsolescence memo IC1635: discontinued, no replacement
- Inductance tolerance: AI is not a documented tolerance code, so we name none
- Shelf count 45 pieces, sold each
- Verify against Bourns' published J.W. Miller 70F data before designing in.
Applications
- RF decoupling and supply-line chokes in receivers and transmitters
- Repair and restoration of gear that already carries a 70F axial choke
- Filter and tuned-circuit work at 150 uH on a through-hole board
- Holding spares for a design that cannot be redrawn around a live part
Frequently Asked Questions
How many should I order?
Order the count your build needs. Our shelf count is 45 pieces, sold each, and Bourns has not made this part since 2017, so there is no factory behind a reorder. Shipping is $8 flat rate and free on orders over $28, so small parts like this ship smartest as part of a larger order.
These parts show no markings - how do I know what I am getting?
Straight answer: nothing in these photos ties these chokes to a part number. The identification rests on our own record, and the three electrical figures in it, 150 uH, 135 mA and 8.16 ohms, all match the 70F154AI row in the Bourns J.W. Miller selection catalog exactly, which is why we are comfortable naming it. Tolerance and any per-unit identity stay unconfirmed, and nothing in the 70F number encodes them. If your application needs a measured value, say so on the order and we will meter what ships.
Nine years past its last ship date, an unmarked bobbin on paper tape leans on the catalog row and our own record, and we have shown you both.
