AA: Specific Device Code (C1 - CAT34C02-C, D1 - CAT34C02-D)

P: Package Type (T - TDFN, U - UDFN)

C: Assembly Location Code

LL: Assembly Lot Number

Y: Production Year (last digit)

M: Production Month (1-9,O,N,D)

OnSemi CAT34C02

C1: CAT34C02-C

T: 8-lead TDFN

S: Assembly Location Code

37: Assembly Lot Number

2: 2012

D: December

OnSemi CAT34TS02

G: Lead Finish (G - NiPdAu)

T: Package Type (T - TDFN)

B: Device Revision

C: Assembly Location Code

LL: Assembly Lot Number

Y: Production Year (last digit)

M: Production Month (1-9,O,N,D)

OnSemi CAT34TS02

G: Lead Finish - NiPdAu

T: TDFN

B: Revision B

S: Assembly Location Code

37: Assembly Lot Number

2: 2012

N: November

OnSemi CAT34TS04

4: Device Capacity (4 - 4 Kbit)

P: Package Type (T - TDFN, U - UDFN)

A: Device Revision

C: Assembly Location Code

LL: Assembly Lot Number

Y: Production Year (last digit)

M: Production Month (1-9,O,N,D)

OnSemi CAT34TS04

4: 4 Kbit EEPROM

T: TDFN-8

A: Revision A

S: Assembly Location Code

51: Assembly Lot Number

5: 2015

5: May

Atmel AT34C02C / AT34C02D

34C: Truncation Device Code, where C - Device Design
(34C - AT34C02C, 34D - AT34C02D)

G: Temperature Grade / Lead Finish Material
(H - Industrial/NiPdAu, U - Industrial/Matte Tin)

V: Minimum Voltage Supply (1,M - 1.70 V)

A: Assembly Location Code

Y: Production Year (0 - 2010 .. 9 - 2019)

TT: Trace Code (Lot Numbers to Correspond to Code)

Atmel AT34C02C

34C: AT34C02C Design C

H: Industrial/NiPdAu

1: 1.70 V

W: Assembly Location Code

1: 2011

NY: Trace Code

Atmel AT24C02C / AT24C02D

02C: Truncation Device Code, where C - Device Design
(02C - AT24C02C, 02D - AT24C02D)

G: Temperature Grade / Lead Finish Material
(H - Industrial/NiPdAu, U - Industrial/Matte Tin/SnAgCu)

V: Minimum Voltage Supply (M - 1.70 V)

A: Assembly Location Code

Y: Production Year (0 - 2010 .. 9 - 2019)

TT: Trace Code (Lot Numbers to Correspond to Code)

Atmel AT24C02C

02C: AT24C02C Design C

H: Industrial/NiPdAu

M: 1.70 V

B: Assembly Location Code

4: 2014

SR: Trace Code

Atmel AT30TSE002B 8-lead UDFN

T2B: Truncation Device Code (T2B - AT30TSE002B), where B - Device Revision

G: Temperature Grade / Lead Finish Material
(H - Industrial/NiPdAu)

V: Minimum Voltage Supply (2 - 2.70 V)

A: Assembly Location Code

Y: Production Year (2 - 2012 .. 9 - 2019)

TT: Trace Code (Lot Numbers to Correspond to Code)

Atmel AT34C04

44: Truncation Device Code

G: Temperature Grade / Lead Finish Material
(5: -20*C to 125*C / NiPdAu)

V: Minimum Voltage Supply (M - 1.70 V)

A: Assembly Location Code

Y: Production Year (0 - 2010 .. 9 - 2019)

TT: Trace Code (Lot Numbers to Correspond to Code)

Atmel AT34C04

44: AT34C04 truncation code

5: -20*C to 125*C / NiPdAu

M: 1.70 V

B: Assembly Location Code

3: 2013

FP: Trace Code

Atmel AT30TSE004A 8-lead UDFN / WDFN

T8A: Truncation Device Code (T8A - AT30TSE004A), where A - Device Revision

G: Temperature Grade / Lead Finish Material
(5 - Industrial/NiPdAu)

V: Minimum Voltage Supply (M - 1.70 V)

A: Assembly Location Code

Y: Production Year (2 - 2012 .. 9 - 2019)

TT: Trace Code (Lot Numbers to Correspond to Code)

Atmel AT30TSE004A

T8A: AT30TSE004A truncation code

5: -20*C to 125*C / NiPdAu

M: 1.70 V

W: Assembly Location Code

3: 2013

DD: Trace Code

XXX: Specific Device Code
(AJ2/AJ3 - 34AA02, AJ5/AJ6 - 34LC02, AJ7 - 34VL02)

Y: Production Year (last digit)

WW: Production Week

TT: Trace Code

XXX: Specific Device Code
(AGK - MCP9843-BE/MC, AGK - MCP9843T-BE/MC
ABZ - MCP98243-BE/MC, ABZ - MCP98243T-BE/MC
AAK - MCP9843T-BE/MNY, AAG - MCP98243T-BE/MNY
AAA - MCP98243T-BE/MUY)

Y: Production Year (last digit)

WW: Production Week

TT: Trace Code

XXX: Specific Device Code
(ACB - 34AA04 (TDFN Package), CAC - 34AA04 (UDFN Package))

Y: Production Year (last digit)

WW: Production Week

TT: Trace Code

Microchip 34AA04

ACB: Identificator

5: Year 2015

47: Week 47

2D: Tracer Code

XXX: Specific Device Code (ABR - MCP98244T-BE/MNY)

Y: Production Year (last digit)

WW: Production Week

TT: Trace Code

Microchip MCP98244T-BE/MNY

ABR: Identificator

5: Year 2015

05: Week 5

M1: Trace Code

XXXXXXXX: Product Code

A: Assembly Location Code

Y: Production Year

M: Production Month

LLL: Lot Number Code

Seiko S-34C02A

34C02A 3: S-34C02A

D: Assembly Location Code

A: Production Year (probably 2010)

2: February

23Y: Lot Number Code

61A: Product Code

Y: Production Year

WW: Production Week

Giantec GT34C02A-2UDLI-TR

6: 34 Series with PSWP feature

1: 2Kbit

A: 34C02 Revision

3: Year 2013

22: Week 22

81: Product Code - GT34TS02

Y: Production Year

WW: Production Week

82: Product Code - GT34TS04

Y: Production Year

WW: Production Week

EB: M34E04B identificator

F: Voltage (1.7 to 3.6V)

T: Tape and reel packing

P: Assembly Plant

Y: Production Year (last digit)

WW: Production Week

ST M34E04B

EB: Identificator

F: Voltage (1.7 to 3.6V)

T: Tape and reel packing

8: Assembly Plant - 8

4: Year 2014

42: Week 42

B: Sensor Accuracy (B - "B"-Grade: high accuracy ±1°C over the active range and ±2°C over the monitoring range)

2: Minimum Voltage (2 to 2.2V)

DN: Package Type (DN - TDFN, 0.80 mm)

TSE4: Product Code (TSE4 - STTS204)

8: ?

Y: Production Year (last digit)

WW: Production Week

ST STTS2004

B: "B"-Grade accuracy

2: 2.2V

DN: TDFN package

TSE4: STTS2004 series

8: ?

4: Year 2014

35: Week 35

4: 2004G Temperature Sensor with EEPROM

B: Sensor Accuracy (B - "B"-Grade: high accuracy ±1°C over the active range and ±2°C over the monitoring range)

2: Supply Voltage (2.2V to 3.6V)

B: Device Revision

C: Package Type ("C" - TDFN-8)

4: ?

ATL: ?

4: 2004G Temperature Sensor with EEPROM

B: "B"-Grade accuracy

2: 2.2V to 3.6V

B: Revision B

C: TDFN-8 Package

4: ?

ATL: ?