SMOK TF-D Subtank Review
The SMOK TF-D Subtank is a 5.5ml, 510 tank built for direct-to-lung vaping, with top airflow, a sliding childproof top fill and SMOK D-COIL mesh coils rated 25W to 65W. See more from SMOK or compare other sub-ohm tanks.
TF-D Subtank Highlights
Four Ways to Stop Leaks
SMOK gives the TF-D four leak-resistant features: top fill and top airflow, a leak-proof design, a skid-proof design and a childproof lock.
Top Airflow
The air intake sits high, so air runs top to bottom to top. SMOK says this stops condensation spills and e-liquid leaks.
Sliding Childproof Top Fill
Slide the top cap to open the fill slot, then push it back. The cap has a childproof lock.
D-COIL Series
D-COIL mesh coils have 4 silicone rings, high-density antibacterial cotton and an unslotted bottom that SMOK says improves leak resistance.
TF-D Subtank Specs
Tank
- Capacity: 5.5ml
- Size: 30 × 53mm
- Weight: 66g
- Thread: 510
- Fill: top fill, sliding cap with childproof lock
- Airflow: top airflow, top-bottom-top path
Coils
- Series: SMOK D-COIL
- Options: Meshed 0.15Ω, 0.23Ω and 0.4Ω
- Ratings: 25–65W across the three
Colors
- Options: 7-Color, Blue, Gold, Gun Metal, Matte Black, Red, Stainless Steel
D-COIL Coils for the TF-D Subtank
SMOK makes three D-COIL coils for the TF-D:
| D-COIL | SMOK says | SMOK rating |
|---|---|---|
| Meshed 0.15Ω | sub-ohm single meshed, for DTL | 55–65W, best at 60W |
| Meshed 0.23Ω | sub-ohm dual meshed, for DTL | 45–55W, best at 50W |
| Meshed 0.4Ω | single meshed, for RDL and DL | 25–35W, best at 25W |
We sell all three as SMOK D coils. SMOK says the dual meshed coil’s hexagon-structure mesh gives more stable heating. Our SMOK coil compatibility guide shows which coils fit each SMOK tank and pod kit.
How to Set Up the TF-D Subtank
- Open the top: slide the top cap to expose the fill slot.
- Fill it: insert the bottle nozzle fully into the slot and add e-liquid.
- Close it: push the top cap back.
- Wait: wait 2 to 3 minutes so the cotton soaks through before you vape.
- Mount it: screw the tank onto a 510 mod.
- Set it: set the power for your D-COIL (55W to 65W for the 0.15Ω, 45W to 55W for the 0.23Ω, 25W to 35W for the 0.4Ω).
Who the TF-D Subtank Is For
The SMOK TF-D Subtank suits direct-to-lung vapers who want a tank that resists leaks. It also comes in two SMOK kits we sell, the X-Priv Plus and the X-Priv Solo. For the coils on their own, see our D coils.
Good to know: SMOK also makes the TF-D in 3.5ml and 2ml versions. The 5.5ml version uses a bulb glass.







