UC3842B
UMW
10V ~ 30VTape & Reel (TR); Cut Tape (CT)0°C~70°C(TA)
Ref. price$0.5000
Lead time on requestGet quote ›
UMW UC38 Series
3 variants · UMW
About the UMW UMW UC38 Series series
The UMW UMW UC38 Series series groups 3 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. Every variant in the range shares a common case of 8-SOIC (0.154\", 3.90mm Width), control features of Frequency Control, Soft Start and mounting type of Surface Mount. Variants differ by duty cycle, frequency and operating temperature, so you can match the exact duty cycle your application requires using the selection guide below. All listed UMW UC38 Series part numbers are active and orderable.
Select a variant by
- Duty cycle
- 50% · 97%
- Frequency
- 50kHz, 52kHz · Up to 500kHz
- Operating temperature
- 0°C ~ 70°C (TA) · 0°C~70°C(TA)
- Package
- Tape & Reel (TR) Cut Tape (CT) · Tape & Reel (TR); Cut Tape (CT)
- Voltage - supply (Vcc (Vdd))
- 7.6V ~ 30V · 10V ~ 30V
- Voltage - start up
- 8.4 V · 16 V
Variant comparison
| Parameter | UC3842B | UC3843B | UC3845B |
|---|---|---|---|
| Duty cycle | 97% | 97% | 50% |
| Frequency | 50kHz, 52kHz | 50kHz, 52kHz | Up to 500kHz |
| Operating temperature | 0°C~70°C(TA) | 0°C~70°C(TA) | 0°C ~ 70°C (TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) | Tape & Reel (TR); Cut Tape (CT) | Tape & Reel (TR) Cut Tape (CT) |
| Voltage - supply (Vcc (Vdd)) | 10V ~ 30V | 7.6V ~ 30V | 7.6V ~ 30V |
| Voltage - start up | 16 V | 8.4 V | — |
Shared specifications
- Case
- 8-SOIC (0.154\", 3.90mm Width)
- Control features
- Frequency Control, Soft Start
- Mounting type
- Surface Mount
- Topology
- Boost, Flyback
Request a quote on any UMW UC38 Series part number and we confirm price, availability and lead time per line — including end-of-life and allocation-constrained variants.
Frequently asked questions
- How do the UMW UMW UC38 Series variants differ?
- UMW UC38 Series part numbers differ by duty cycle, frequency, operating temperature and package. Use the selection guide above to pick by duty cycle.
- How many UMW UMW UC38 Series part numbers are listed?
- 3 UMW UMW UC38 Series part numbers are listed, each with specifications and a datasheet where available.
- How do I get pricing and lead time for UMW UMW UC38 Series?
- Request a quote (RFQ) for any UMW UC38 Series part number and we confirm price, availability and lead time per line — including end-of-life and hard-to-find variants.
