Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Manufacturer | onsemi |
| Exact MPN | MMBFJ175LT1G |
| Product Category | JFETs |
| Package | SOT-23 |
| Packing | 3,000 pcs/reel |
| Configuration | 1 P-channel |
| Gate-Source Cutoff Voltage (VGS(off)) | 3V |
| Gate-Source Breakdown Voltage (VGSS) | 30V |
| Power Dissipation (PD) | 225mW |
Product Overview
MMBFJ175LT1G is a onsemi device in the JFETs category, supplied in a SOT-23 package.
Verified selection data includes Configuration: 1 P-channel, Gate-Source Cutoff Voltage (VGS(off)): 3V, Gate-Source Breakdown Voltage (VGSS): 30V, Power Dissipation (PD): 225mW.
The relatively wide I_{DSS} range makes this a poor choice for precision current setting without feedback or trimming.

Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | onsemi |
| Exact MPN | MMBFJ175LT1G |
| Functional Category | JFETs |
| Package | SOT-23 |
| Packing | 3,000 pcs/reel |
| Source Catalog ID | C133304 |
| Configuration | 1 P-channel |
| Gate-Source Cutoff Voltage (VGS(off)) | 3V |
| Gate-Source Breakdown Voltage (VGSS) | 30V |
| Power Dissipation (PD) | 225mW |
| Manufacturer Status | Active. |
Selection Notes
P-channel polarity; I_{DSS}; cutoff voltage; on-resistance; standard versus S-prefix qualification.
Match channel polarity, VGS(off), breakdown voltage, current range and dissipation to the analog switch or bias point.
Manufacturer Decision-Relevant Notes
V_{DG} max 25 V; reverse V_{GS} max -25 V; V_{(BR)GSS} min 30 V; V_{GS(off)} min 3.0 V, max 6.0 V; I_{DSS} min 7 mA, max 60 mA at V_{GS}=0, V_{DS}=15 V; I_{D(off)} max 1 nA; r_{DS(on)} max 125 Ω at I_D=500 µ A; C_{iss} max 11 pF; C_{rss} max 5.5 pF.
Design Considerations
- Verify source/drain polarity and negative gate stress; check 125 Ω worst-case resistance; calculate dissipation using 225 mW at 25 °C and 1.8 mW/°C derating; verify gate leakage under the actual bias.
Application Fit
Analog switching, sample-and-hold, chopper-stabilized amplifiers.
Exact Variant and Procurement Notes
SOT-23, Pb-free, 3,000/tape-and-reel; the SMMBFJ175LT1G is the automotive-qualified variant.
Manufacturer Resources
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. Physical product, label, packaging, and Date Code photos may be provided where appropriate.
Request a Quote
For MMBFJ175LT1G quotation, provide the exact MPN, required quantity, destination, target Date Code if applicable, and any inspection or testing requirements.




