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EC ENGR 121B · Lec 1

Principles of Semiconductor Device Design

Fall 2026 · Emaminejad, S. · 4 units

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Status
Open

Tell dibs what you have already taken and this line will say which of these you have. Your list.

Restrictions read 38 hours ago. Dibs re-reads these slowly because they rarely change; watch the section and it moves to every 6 hours.
Enrolled in lecture
149 of 150
99% full
Read 24 minutes ago, and the registrar publishes once an hour, so this is current.
Waitlist
No waitlist
Seat risk
high risk

From the registrar

Students who enroll in upper-division courses offered by the Samueli School without completing the requisites are subject to disenrollment after the second class meeting. If necessary, consult with an OASA counselor through MyUCLA Message Center.

Discussions: this is what you enroll in

Enrollment at UCLA acts on the discussion, not the lecture. The lecture's seat count above is the sum across all of them, so it can read open while every discussion you could actually join is full.

Discussion sections, with live enrollment
Discussion Status Enrolled Seats left Meets Where
Dis 1A
Closed 35 of 35 0 W 12:00pm-12:50pm Public Affairs Building 2242
Dis 1B
Closed 35 of 35 0 F 12:00pm-12:50pm Mathematical Sciences 5117
Dis 1C
Closed 35 of 35 0 F 2:00pm-2:50pm Boelter Hall 5436
Dis 1D
Open 44 of 45 1 F 3:00pm-3:50pm Online

When it meets

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7am
8am
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Meets: TR 10:00am-11:50am

Discussions: F 3:00pm-3:50pm

Boelter Hall 3400

Predicted GPA

3.70
this instructor · 322 grades
A range
79%
P/NP
-
letter grade only
D/F/W
0.6%

Full grade history for EC ENGR 121B

What students say

Dibs measures outcomes: grades, seats, how fast it fills. For what the class is actually like to sit in, BruinWalk has the reviews.

Enrollment over time

A dot is a reading where something moved: the seat count, the status, or the waitlist. The last one is the most recent sweep, moved or not. The line holds flat between dots because that is what the readings say: it did not drift, it held and then jumped. The ticks along the bottom are the hours Dibs recorded reading this section, which is how a flat run says "checked, unchanged" rather than "nobody looked". It only keeps those from 25 August, so the ruler is shorter than the line for now. Both start when Dibs did rather than reaching back before it existed.

Freed 1 seat over 11 days

1 time reopened
151148
18 Aug 18:40capacity 15029 Aug 09:43
Show the readings
Recorded Enrolled Capacity Status Waitlist
29 Aug 09:43 149 150 open -
28 Aug 01:40 149 150 open -
18 Aug 18:40 150 150 closed -

How big this course usually runs

Final enrollment per term from four years of grade data. Summer excluded: different population, different pass structure.

  • 8522W
  • 3522S
  • 2422F
  • 9623W
  • 3223F
  • 14124W
Enrollment by term: 22W 85, 22S 35, 22F 24, 23W 96, 23F 32, 24W 141

Peak 141 · most recent 24W at 141