CROSS-REFERENCE ALTERNATIVE
COS2181STRPBF is a Chinese-manufactured 600V High-Voltage Gate Driver from COSINE (科山芯创) that cross-references to IRS2181 (英飞凌), and also to IR2181.
It is a SOP8 device positioned as a domestic-supply option against the imported: shorter lead times, no allocation risk and a stable price for volume production. Because the parts are not pin-identical in every case, the engineering checklist below lists what to verify before you commit.
Cross-reference · Before you substitute · Related parts · FAQ · Request a quote
COS2181STRPBF — 600V High-Voltage Gate Driver, alternative to IRS2181
COS2181STRPBF is supplied by Shenzhen Jingteng Electronics (JTDZ Tech) as a domestically sourced option for IRS2181 (英飞凌), IR2181 (英飞凌). Imported parts in this class are frequently subject to allocation, long lead times and steep price swings. A Chinese-manufactured equivalent removes that exposure: the parts are production-validated in industrial, consumer and automotive designs and ship from stock on a short lead time.
Cross-reference chart — which imported parts does COS2181STRPBF replace?
Every imported part number that COS2181STRPBF is published as a cross-reference alternative to, per the COSINE (科山芯创) 2025 selection table:
| imported part number | brand | Replaced by (this part) |
|---|---|---|
| IRS2181 | 英飞凌 | COS2181STRPBF |
| IR2181 | 英飞凌 | COS2181STRPBF |
Cross-reference means functional equivalence in the same application role. It is not a blanket claim of pin-for-pin identity — confirm package, pinout and the parameters listed below before you release a design change.
Device information
| Part number | COS2181STRPBF |
| Manufacturer | COSINE (科山芯创) |
| Device class | 600V High-Voltage Gate Driver |
| Package | SOP8 |
| Pin Count | 8 |
| Verified and new, traceable date code | |
| Stock | In stock, ships within 24 hours |
| Description | 600V High-Voltage Gate Driver, SOP8 package. |
What to verify before substituting COS2181STRPBF
These are the parameters that decide whether a cross-reference works in practice. Run through the list against the datasheet before releasing a change:
- High-side floating supply (Vbs) requirement and the bootstrap diode/capacitor network it implies
- Under-voltage lockout thresholds on both the low and the high side
- Dead time and interlock logic — verify the part does not allow both outputs on simultaneously
- Propagation delay and channel-to-channel matching at 600 V
- Peak source/sink current against the gate charge of your IGBT or MOSFET
- dV/dt immunity and negative-Vs transient tolerance, the usual cause of field failures
- Package, pinout and the isolated voltage rating
Typical applications
- Three-phase motor inverters and BLDC drives
- Half-bridge and full-bridge power stages
- Switch-mode power supplies and PFC stages
- Solar inverters and energy storage
- Induction heating and welding equipment
- Uninterruptible power supplies
Related COSINE parts and alternatives
Other {BRAND} parts in the same device family or the same device class — useful when you are cross-referencing a whole BOM rather than a single line item.
| COSINE part | Package | Cross-references to | Relation |
|---|---|---|---|
| COS2113PBF | DIP14 | IRS2113, IR2113, IRS2110、IR2110 | 600V High-Voltage Gate Driver |
| COS2113STRPBF | SOP16W | IRS2113, IR2113 | 600V High-Voltage Gate Driver |
| COS2183S | SOP8 | IRS2183, IR2183 | 600V High-Voltage Gate Driver |
| COS21834S | SOP14 | IRS21834, IR21834 | 600V High-Voltage Gate Driver |
| COS2184S | SOP8 | IRS2184, IR2184 | 600V High-Voltage Gate Driver |
| COS21844S | SOP14 | IRS21844, IR21844 | 600V High-Voltage Gate Driver |
Frequently asked questions
What does COS2181STRPBF replace?
According to the COSINE (科山芯创) 2025 cross-reference table, COS2181STRPBF is published as an alternative to IRS2181 (英飞凌), IR2181 (英飞凌).
Is COS2181STRPBF a pin-to-pin drop-in for IRS2181?
Cross-reference means the part is intended for the same application role; it is not a blanket guarantee of pin-for-pin identity. Check package, pinout and the parameters listed under “What to verify” above, or send us your BOM and we will confirm before you commit.
Can you supply the IRS2181 as well?
Yes. We source both the imported and the Chinese-manufactured alternative, so you can compare price, lead time and availability on the same quote.
What is the MOQ and lead time for COS2181STRPBF?
MOQ 1 pc. COS2181STRPBF is held in stock and ships within 24 hours; quotes are returned within 2 business hours. We ship worldwide including India, Vietnam and the Middle East.
Request a quote for COS2181STRPBF
Send us the part number and target quantity — we reply within 2 business hours with price, stock and a cross-reference confirmation.
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Genuine original parts guaranteed — traceable lot & date code, X-ray / visual inspection and third-party test supported before shipment.
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