CROSS-REFERENCE ALTERNATIVE
COSINA333MRA is a Chinese-manufactured 5V Precision Instrumentation Amplifier from COSINE (科山芯创) that cross-references to INA333 (TI).
It is a MSOP8 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
COSINA333MRA — 5V Precision Instrumentation Amplifier, alternative to INA333
COSINA333MRA is supplied by Shenzhen Jingteng Electronics (JTDZ Tech) as a domestically sourced option for INA333 (TI). 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 COSINA333MRA replace?
Every imported part number that COSINA333MRA 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) |
|---|---|---|
| INA333 | TI | COSINA333MRA |
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 | COSINA333MRA |
| Manufacturer | COSINE (科山芯创) |
| Device class | 5V Precision Instrumentation Amplifier |
| Package | MSOP8 |
| Pin Count | 8 |
| Verified and new, traceable date code | |
| Stock | In stock, ships within 24 hours |
| Description | 5V Precision Instrumentation Amplifier, MSOP8 package. |
What to verify before substituting COSINA333MRA
These are the parameters that decide whether a cross-reference works in practice. Run through the list against the datasheet before releasing a change:
- Single-supply operation at 5 V and the minimum supply the part actually needs
- Gain-set resistor value and gain error at the gains you use
- Input common-mode range — single-supply instrumentation amps are not all rail-to-rail at the input
- Output swing to ground at the load current you draw
- Input offset voltage and drift referred to input
- Reference pin configuration and mid-supply biasing
- Package and pinout
Typical applications
- Portable and battery-powered sensor front ends
- Bridge and load-cell conditioning at 5 V
- Medical wearables and handheld instruments
- Industrial analogue inputs on 5 V rails
- Low-voltage data acquisition
- Pressure and force sensing
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 |
|---|---|---|---|
| COSINA333MRB | MSOP8 | INA333 | Same series |
| COSINA333-20MR | MSOP-8 | — | 5V Precision Instrumentation Amplifier |
| COSINA333-50MR | MSOP-8 | — | 5V Precision Instrumentation Amplifier |
Frequently asked questions
What does COSINA333MRA replace?
According to the COSINE (科山芯创) 2025 cross-reference table, COSINA333MRA is published as an alternative to INA333 (TI).
Is COSINA333MRA a pin-to-pin drop-in for INA333?
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 INA333 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 COSINA333MRA?
MOQ 1 pc. COSINA333MRA 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 COSINA333MRA
Send us the part number and target quantity — we reply within 2 business hours with price, stock and a cross-reference confirmation.
Request a quote More Amplifiers / Data Conversion
Genuine original parts guaranteed — traceable lot & date code, X-ray / visual inspection and third-party test supported before shipment.
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