220 032819
MARKING
TCN
Type
TCJ
TCN
4
Case Size
See table
above
158
Capacitance Code
pF code: 1st two digits
represent significant figures,
3rd digit represents multiplier
(number of zeros to follow)
M
Tolerance
M = ±20%
006
Rated DC Voltage
HOW TO ORDER
R
Packaging
R = Pure Tin 7" Reel
S = Pure Tin 13" Reel
(J-Lead)
0055
ESR in mΩ
LEAD-FREE COMPATIBLE
COMPONENT
J-CAPTM Series
Highest Joules/cc Conductive Polymer Solid Electrolytic Chip Capacitors
4 CASE
XXXXX
158 J
AVX LOGO
Polymer Capacitance Value in pF
158 = 1500µF
Rated Voltage
J = 6.3V
ID Code
Polarity
Band
(Anode+)
XXXXX
107 V
AVX LOGO
Polymer Capacitance Value in pF
107 = 100µF
Rated Voltage
V = 35V
ID Code
Polarity
Band
(Anode+)
C, D, E, H, L, T, X, 5 CASE
XXXXX
156 J
AVX LOGO
Polymer Capacitance Value in pF
156 = 15µF
Rated Voltage
J = 6.3V
ID Code
Polarity
Band
(Anode+)
XXXXX
157 C
AVX LOGO
Polymer Capacitance Value in pF
157 = 150µF
Rated Voltage
C = 16V
ID Code
Polarity
Band
(Anode+)
006 = 6.3Vdc
010 = 10Vdc
016 = 16Vdc
020 = 20Vdc
025 = 25Vdc
035 = 35Vdc
050 = 50Vdc
E
Additional
Character
E = Black resin
CASE DIMENSIONS Undertab: millimeters (inches)
Code EIA EIA L±0.20 W+0.20 (0.008) H max. WP±0.10 WN±0.10 AP±0.10 AN±0.10 S Min.
Code Metric (0.008) -0.10 (0.004) (0.004) (0.004) (0.004) (0.004)
L 1210 3528-10 3.50 (0.138) 2.80 (0.110) 1.00 (0.039) 2.50 (0.098) 2.10 (0.083) 1.15 (0.045) 1.35 (0.053) 1.00 (0.039)
T 1210 3528-12 3.50 (0.138) 2.80 (0.110) 1.20 (0.047) 2.50 (0.098) 2.10 (0.083) 1.15 (0.045) 1.35 (0.053) 1.00 (0.039)
X 2917 7343-15 7.30 (0.287) 4.30 (0.169) 1.50 (0.059) 3.25 (0.128) 3.25 (0.128) 2.00 (0.079) 3.20 (0.126) 2.10 (0.083)
4 2924 7361-20 7.30 (0.287) 6.10 (0.240) 2.00 (0.079) 4.75 (0.187) 4.75 (0.187) 2.00 (0.079) 3.20 (0.126) 2.10 (0.083)
CASE DIMENSIONS J-lead: millimeters (inches)
Code EIA EIA L±0.20 W+0.20 (0.008) H+0.20 (0.008) W1±0.20 A+0.30 (0.012) S Min.
Code Metric (0.008) -0.10 (0.004) -0.10 (0.004) (0.008) -0.20 (0.008)
C 2312 6032-28 6.00 (0.236) 3.20 (0.126) 2.60 (0.102) 2.20 (0.087) 1.30 (0.051) 2.90 (0.114)
D 2917 7343-31 7.30 (0.287) 4.30 (0.169) 2.90 (0.114) 2.40 (0.094) 1.30 (0.051) 4.40 (0.173)
E 2917 7343-43 7.30 (0.287) 4.30 (0.169) 4.10 (0.162) 2.40 (0.094) 1.30 (0.051) 4.40 (0.173)
H 1210 3528-15 3.50 (0.138) 2.80 (0.110) 1.50 (0.059) max. 2.20 (0.087) 0.80 (0.031) 1.40 (0.055)
5 2917 7343-40 7.30 (0.287) 4.30 (0.169) 3.80 (0.150) 2.40 (0.094) 1.30 (0.051) 4.40 (0.173)
W1 dimension applies to the termination width for A dimensional area only.
MAXIMUM ENERGY
PER CASE SIZE
Case H Max Max Energy
Size (mm) (mJ)
C 2.8 5.8
D 3.1 21.8
E 4.3 11.9
H 1.5 2.6
L 1.0 1.8
T 1.2 6.5
X 1.5 18.2
4 2.0 43.0
5 4.0 46.6
FEATURES
• Highest Energy per volume
• Fast DCL drop with Voltage applied after reflow
• Benign failure mode under recommended use conditions
• Low ESR
• Undertab terminations layout:
- High Volumetric Efficiency
- Low profile case sizes
- High capacitance in smaller dimensions
- Close positioning of several parts for efficient high density PCB layout
• 3x reflow 260°C compatible
APPLICATIONS
• Power backup for SSDs (MLC, SLC, EFD, PCIe), battery-powered portable equipment,
industrial alarms, smart power meters, and mobile devices.
W
WPAPS
H
ANWN
WL
Polarity Band (Anode+)
W
WPAPS
H
ANWN
WL
Polarity Band (Anode+)
J-LEAD UNDERTAB
032819 221
Technical Data: All technical data relate to an ambient temperature of +25°C
Capacitance Range: 4.7 μF to 1500 μF
Capacitance Tolerance: ±20%
Leakage Current DCL: 0.1CV
Rated Voltage (VR) ⱕ+85ºC: 6.3 10 16 20 25 35 50
Surge Voltage (VS) ⱕ+85ºC: 8 13 21 26 33 46 65
Temperature Range: -55°C up to +125°C
Reliability: 1% per 1000 hours at 85°C, VRwith 0.1Ω/V series impedance
60% confidence level
TECHNICAL SPECIFICATIONS
J-CAPTM Series
Highest Joules/cc Conductive Polymer Solid Electrolytic Chip Capacitors
Capacitance Rated Voltage DC to 85°C, [mJ]
μF Code 6.3V (J) 10V (A) 16V (C) 20V (D) 25V (E) 35V (V) 50V (T)
4.7 475 L(300) [1.8]
T(200E)
6.8 685 C(200) [5.4]
10 106 T(200E) [3.9] D(120) [8.0]
15 156 C(200) [5.8] E(70) [11.9]
22 226 T(200E) [4.3] D(100) [8.5]
33 336 H(150E) [3.3] T(250E) [6.5] D(70) [12.8]
T(200E)
47 476 C(100) [1.7] T(200) [4.7] X(100) [9.2] X(150E) [18.2]
H(100E) T(150E)
68 686 H(100E) [0.8] D(45) [2.5] D(50) [6.7] D(55) [8.4] D(70) [13.3]
100 107 D(45) [3.6] D(50) [9.9] D(55) [12.4] D(70) [19.6] 4(100E) [38.8]
4(100)
150 157 T(200E) [1.7] D(45) [5.4] X(100E) [14.9] 4(70) [29.3]
220 227 H(170) [2.6] D(40) [7.9] D(50) [21.8] 4(100) [27.2] 4(100E) [43.0]
4(70)
330 337 D(40) [3.8] 5(100) [11.9] 4(70E) [32.7]
5(100)
470 477 X(50) [5.4] 5(100) [46.6]
1000 108 4(55) [11.6]
1500 158 4(55) [17.4]
CAPACITANCE AND RATED VOLTAGE RANGE
(LETTER DENOTES CASE SIZE)
Not recommended for new designs; higher voltage or smaller case size alternatives are available.
Released ratings, (ESR ratings in mOhms in parentheses) [Energy in mJ]
Engineering samples - please contact AVX
Note: Voltage ratings are minimum values. AVX reserves the right to supply
higher voltage ratings in the same case size, to the same reliability standards.
NOTE: Conductive Polymer Capacitors are designed to operate within the limits of the environmental conditions specified for each series. If operated continuously
at their maximum temperature and / or humidity limit, or beyond these limits, capacitors may exhibit a parametric shift in capacitance and increases in ESR. These
changes may occur earlier if the specified environmental conditions are exceeded. Similarly, their normal operational time period will be significantly extended if their
general duty cycle includes operation below maximum temperature within humidity controlled environments. Careful attention should be paid to maximum temper-
ature with associated high humidity environments as well as voltage derating, ripple current and current surges. Please reference the AVX Conductive Polymer
Capacitor Guidelines for more information or contact factory for application assistance.
222 032819
J-CAPTM Series
Highest Joules/cc Conductive Polymer Solid Electrolytic Chip Capacitors
RATINGS & PART NUMBER REFERENCE
Energy is calculated by this formula (consider derating factor):
Energy = ½ C x ((Vr x X)2– Vx2)
where C = Capacitance
Vr = Rated Voltage
X = Recommended derating factor
Vx= 3V (invariable)
Moisture Sensitivity Level (MSL) is defined according to J-STD-020.
All technical data relates to an ambient temperature of +25ºC. Capacitance is
measured at 120Hz, 0.5RMS with DC bias of 2.2 volts. DCL is measured at
rated voltage after 5 minutes.
ESR allowed to move up to 1.25 times catalog limit post mounting.
For typical weight and composition see page 274.
NOTE: AVX reserves the right to supply higher voltage ratings in the same
case size, to the same reliability standards.
Rated Maximum DCL DF ESR 1000kHz ENERGY
AVX Case
Capacitance
Voltage Operating Max. Max. Max. RMS Product MSL
Energy Energy/volume Energy/area
Part No. Size (μF) (V) Temperature (μA) (%) @ 100kHz Current Category (mJ) (mJ/cm
3
) (mJ/cm
2
)
(ºC) (mΩ) (mA) 45ºC
6.3 Volt @ 85°C
TCJH686M006#0100E H 68 6.3 105 40.8 6 100 1000 3 3 0.8 54 8.0
TCNT157M006#0200E T 150 6.3 105 90 10 200 700 3 4 1.7 147 17.7
TCJH227M006#0170 H 220 6.3 105 132 10 170 800 3 3 2.6 173 26
TCJD337M006#0040 D 330 6.3 105 198 6 40 2400 2 3 3.8 42 12.2
TCNX477M006#0050 X 470 6.3 85 282 10 50 1900 5 5 5.4 115 17.3
TCN4108M006#0055 4 1000 6.3 85 600 20 55 1860 5 4 11.6 130 26
TCN4158M006#0055 4 1500 6.3 85 900 20 55 1860 5 4 17.4 195 39
10 Volt @ 85°C
TCJH476M010#0100E H 47 10 105 47 6 100 1000 3 3 1.7 115 17.3
TCJC476M010#0100 C 47 10 125 47 6 100 1300 1 3 1.7 34 8.8
TCJD686M010#0045 D 68 10 105 68 6 45 2200 3 3 2.5 27 7.8
TCJD107M010#0045 D 100 10 105 100 6 45 2200 3 3 3.6 40 11.5
TCJD157M010#0045 D 150 10 105 150 6 45 2200 3 3 5.4 59 17.2
TCJD227M010#0040 D 220 10 105 220 6 40 2400 3 3 7.9 87 25.2
TCJ5337M010#0100 5 330 10 105 330 10 100 1300 2 3 11.9 100 37.8
16 Volt @ 85°C
TCJH336M016#0150E H 33 16 105 52.8 6 150 800 3 3 3.3 223 33.4
TCNT336M016#0200E T 33 16 105 52.8 6 200 700 3 4 3.3 277 33.4
TCNT476M016#0150E T 47 16 105 75.2 6 150 800 3 4 4.7 395 47.6
TCNT476M016#0200 T 47 16 105 75.2 6 200 700 3 4 4.7 395 47.6
TCJD686M016#0050 D 68 16 105 108.8 6 50 2100 2 3 6.7 74 21.5
TCJD107M016#0050 D 100 16 105 160 6 50 2100 2 3 9.9 109 31.6
TCNX157M016#0100E X 150 16 85 240 6 100 1300 5 4 14.9 316 47.4
TCJD227M016#0050 D 220 16 105 352 10 50 2100 2 3 21.8 240 69.5
TCN4227M016#0070 4 220 16 105 352 20 70 1650 2 4 21.8 245 49
TCN4337M016#0070E 4 330 16 105 528 20 70 1650 3 4 32.7 367 73.5
TCJ5337M016#0100 5 330 16 105 528 10 100 1300 2 3 32.7 274 104.2
TCJ5477M016#0100 5 470 16 105 752 10 100 1300 3 3 46.6 391 148.5
20 Volt @ 85°C
TCJD686M020#0055 D 68 20 105 136 6 55 2000 3 3 8.4 92 26.7
TCJD107M020#0055 D 100 20 105 200 6 55 2000 3 3 12.4 136 39.3
TCN4227M020#0100 4 220 20 85 440 10 100 1380 5 4 27.2 305 61.1
25 Volt @ 85°C
TCNT226M025#0200E T 22 25 105 55 6 200 700 3 4 4.3 364 43.9
TCNT336M025#0250E T 33 25 105 82.5 10 250 600 3 4 6.5 547 65.8
TCNX476M025#0100 X 47 25 105 117.5 6 100 1300 2 5 9.2 195 29.3
TCJD686M025#0070 D 68 25 105 170 6 70 1800 2 3 13.3 146 42.3
TCJD107M025#0070 D 100 25 105 250 6 70 1800 2 3 19.6 215 62.3
TCN4107M025#0100 4 100 25 105 250 6 100 1380 2 4 19.6 219 43.9
TCN4157M025#0070 4 150 25 105 375 6 70 1650 2 4 29.3 329 65.9
TCN4227M025#0100E 4 220 25 105 550 10 100 1380 3 4 43.0 483 96.7
35 Volt @ 85°C
TCNL475M035#0300 L 4.7 35 105 16.5 6 300 600 2 5 1.8 186 18.6
TCNT475M035#0200E T 4.7 35 105 16.5 10 200 700 3 4 1.8 154 18.6
TCNT106M035#0200E T 10 35 105 35 10 200 700 3 4 3.9 328 39.5
TCJC156M035#0200 C 15 35 105 52.5 6 200 900 3 3 5.8 116 30.3
TCJD226M035#0100 D 22 35 105 77 6 100 1500 2 3 8.5 94 27.1
TCJD336M035#0070 D 33 35 105 115.5 6 70 1800 2 3 12.8 141 40.7
TCNX476M035#0150E X 47 35 105 165 10 150 1100 3 4 18.2 387 58.0
TCN4107M035#0100E 4 100 35 105 350 10 100 1380 2 4 38.8 435 87.1
50 Volt @ 85°C
TCJC685M050#0200 C 6.8 50 105 34 8 200 900 3 3 5.4 108 28.2
TCJD106M050#0120 D 10 50 105 50 10 120 1400 3 3 8.0 87 25.3
TCJE156M050#0070 E 15 50 105 75 6 70 1900 3 3 11.9 93 38
032819 223
J-CAPTM Series
Highest Joules/cc Conductive Polymer Solid Electrolytic Chip Capacitors
RECOMMENDED DERATING FACTOR
Voltage and temperature derating as percentage of Vr
100%
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
-55ºC 85ºC 105ºC
Rated Voltage
Product Category 2
Recommended Application
Voltage for Vr ≤ 10V
Recommended Application
Voltage for Vr ≥ 16V
100%
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
-55ºC 85ºC
Rated Voltage
Product Category 5
Recommended Application
Voltage for Vr ≤ 10V
Recommended Application
Voltage for Vr ≥16V
100%
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
-55ºC 85ºC 125ºC
67%
60%
54%
Product Category 1
Rated Voltage
Recommended Application
Voltage for Vr ≤ 10V
Recommended Application
Voltage for Vr ≥ 16V
100%
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
-55ºC 85ºC 105ºC
Product Category 3, 4
Rated Voltage
Recommended Application
Voltage for Vr ≤ 10V
Recommended Application
Voltage for Vr ≥ 16V
80%
72%
64%
Product Category 1
Product Category 3
Product Category 2
Product Category 5
224 032819
J-CAPTM Series
Highest Joules/cc Conductive Polymer Solid Electrolytic Chip Capacitors
PRODUCT CATEGORY 1 (TEMPERATURE RANGE -55°C TO +125°C)
TEST Condition Characteristics
Visual examination no visible damage
DCL 1.25 x initial limit
ΔC/C within ±20% of initial value
DF 1.5 x initial limit
ESR 2 x initial limit
Visual examination no visible damage
DCL 2 x initial limit
ΔC/C within ±20% of initial value
DF 1.5 x initial limit
ESR 2 x initial limit
Visual examination no visible damage
DCL 3 x initial limit
ΔC/C within +30/-20% of initial value
DF 1.5 x initial limit
ESR 2 x initial limit
+20ºC -55ºC +20ºC +85ºC +125ºC +20ºC
DCL
IL* n/a IL* 10 x IL* 12.5 x IL* IL*
ΔC/C
n/a +0/-20% ±5% +20/-0% +30/-0% ±5%
DF
IL* 1.5 x IL* IL* 1.5 x IL* 2 x IL* IL*
Visual examination no visible damage
DCL initial limit
ΔC/C within +10/-20% of initial value for Vr ≤ 10V
within +20/-30% of initial value for Vr ≥ 16V
DF 1.25 x initial limit
Visual examination no visible damage
DCL initial limit
ΔC/C within ±5% of initial value
DF initial limit
ESR initial limit
Visual examination no visible damage
DCL initial limit
ΔC/C within ±5% of initial value
DF initial limit
ESR initial limit
Apply rated voltage (Ur) at 85ºC and /or 2/3 rated
voltage (Ur) at 125ºC for 2000 hours through a
circuit impedance of ≤0.1Ω/V. Stabilize at room
temperature for 1-2 hours before measuring.
Store at 125ºC, no voltage applied, for 2000 hours.
Stabilize at room temperature for 1-2 hours before
measuring.
Store at 65ºC and 95% relative humidity for 500
hours, with no applied voltage. Stabilize at room
temperature and humidity for 1-2 hours before
measuring.
Apply 1.3x 2.3x rated voltage (Ur) at 125ºC for
1000 cycles of duration 6 min (30 sec charge,
5 min 30 sec discharge) through a charge /
discharge resistance of 1000Ω
Step Temperature°C Duration(min)
1 +20 15
2 -55 15
3 +20 15
4 +85 15
5 +125 15
6 +20 15
*Initial Limit Initial measurement max. 1hr after the removal from dry pack or after pretreatment at 85°C for 24 hours.
Endurance
Storage Life
Humidity
Temperature
Stability
Surge
Voltage
MIL-STD-202, Method 213, Condition C
MIL-STD-202, Method 204, Condition D
Mechanical
Shock
Vibration
032819 225
PRODUCT CATEGORY 2, 3 (TEMPERATURE RANGE -55°C TO +105°C)
TEST Condition Characteristics
Visual examination no visible damage
DCL 1.25 x initial limit
ΔC/C within +10/-20% of initial value for Vr ≤ 16V
within ±20% of initial value for Vr ≥ 20V
DF 1.5 x initial limit
ESR 2 x initial limit
Visual examination no visible damage
DCL 1.25 x initial limit
ΔC/C within +10/-20% of initial value for Vr ≤ 16V
within ±20% of initial value for Vr ≥ 20V
DF 1.5 x initial limit
ESR 2 x initial limit
Visual examination no visible damage
DCL 3 x initial limit
ΔC/C within +30/-20% of initial value
DF 1.5 x initial limit
ESR 2 x initial limit
+20ºC -55ºC +20ºC +85ºC +105ºC +20ºC
DCL
IL* n/a IL* 10 x IL* 12.5 x IL* IL*
ΔC/C
n/a +0/-20% ±5% +20/-0% +30/-0% ±5%
DF
IL* 1.5 x IL* IL* 1.5 x IL* 2 x IL* IL*
Visual examination no visible damage
DCL initial limit
ΔC/C within +10/-20% of initial value for Vr ≤ 16V
within +20/-30% of initial value for Vr ≥ 20V
DF 1.25 x initial limit
Visual examination no visible damage
DCL initial limit
ΔC/C within ±5% of initial value
DF initial limit
ESR initial limit
Visual examination no visible damage
DCL initial limit
ΔC/C within ±5% of initial value
DF initial limit
ESR initial limit
Apply rated voltage (Ur) at 85ºC for 2000 hours through a
circuit impedance of ≤0.1Ω/V (all CATEGORIES). And / or
apply rated voltage (Ur) (CATEGORY 2) or 0.8x rated
voltage (CATEGORY 3) at 105°C for 2000 hours through
a circuit impedance of ≤0.1Ω/V. Always stabilize at room
temperature for 1-2 hours before measuring.
Store at 105ºC, no voltage applied, for 2000 hours.
Stabilize at room temperature for 1-2 hours before meas-
uring.
Store at 65ºC and 95% relative humidity for 500 hours,
with no applied voltage. Stabilize at room temperature
and humidity for 1-2 hours before measuring.
Apply 1.3x rated voltage (Ur) at 105ºC for CATEGORY 2,
or apply 1.3x 0.8x rated voltage (Ur) at 105ºC for
CATEGORY 3 for 1000 cycles of duration 6 min
(30 sec charge, 5 min 30 sec discharge) through a
charge / discharge resistance of 1000Ω
Step Temperature°C Duration(min)
1 +20 15
2 -55 15
3 +20 15
4 +85 15
5 +105 15
6 +20 15
*Initial Limit Initial measurement max. 1hr after the removal from dry pack or after pretreatment at 85°C for 24 hours.
Endurance
Storage Life
Humidity
Temperature
Stability
Surge
Voltage
J-CAPTM Series
Highest Joules/cc Conductive Polymer Solid Electrolytic Chip Capacitors
MIL-STD-202, Method 213, Condition C
MIL-STD-202, Method 204, Condition D
Mechanical
Shock
Vibration
226 032819
J-CAPTM Series
Highest Joules/cc Conductive Polymer Solid Electrolytic Chip Capacitors
TEST Condition Characteristics
Visual examination no visible damage
DCL 1.25 x initial limit
ΔC/C within +10/-20% of initial value for Vr ≤ 16V
within ±20% of initial value for Vr ≥ 20V
DF 1.5 x initial limit
ESR 2 x initial limit
Visual examination no visible damage
DCL 1.25 x initial limit
ΔC/C within +10/-20% of initial value for Vr ≤ 16V
within ±20% of initial value for Vr ≥ 20V
DF 1.5 x initial limit
ESR 2 x initial limit
Visual examination no visible damage
DCL 5 x initial limit
ΔC/C within +40/-20% of initial value
DF 1.5 x initial limit
ESR 2 x initial limit
+20ºC -55ºC +20ºC +85ºC +20ºC
DCL
IL* n/a IL* 10 x IL* IL*
ΔC/C
n/a +0/-20% ±5% +20/-0% ±5%
DF
IL* 1.5 x IL* IL* 1.5 x IL* IL*
Visual examination no visible damage
DCL initial limit
ΔC/C within +10/-20% of initial value for Vr ≤ 16V
within +20/-30% of initial value for Vr ≥ 20V
DF 1.25 x initial limit
Visual examination no visible damage
DCL initial limit
ΔC/C within ±5% of initial value
DF initial limit
ESR initial limit
Visual examination no visible damage
DCL initial limit
ΔC/C within ±5% of initial value
DF initial limit
ESR initial limit
Apply rated voltage (Ur) at 85ºC for 2000 hours
through a circuit impedance of ≤0.1Ω/V. Stabilize at
room temperature for 1-2 hours before measuring.
Store at 85ºC, no voltage applied, for 2000 hours.
Stabilize at room temperature for 1-2 hours before
measuring.
Store at 65ºC and 95% relative humidity for 500 hours,
with no applied voltage. Stabilize at room temperature
and humidity for 1-2 hours before measuring.
Apply 1.3x rated voltage (Ur) at 85ºC for 1000 cycles of
duration 6 min (30 sec charge, 5 min 30 sec discharge)
through a charge / discharge resistance of 1000Ω
Step Temperature°C Duration(min)
1 +20 15
2 -55 15
3 +20 15
4 +85 15
5 +20 15
PRODUCT CATEGORY 5 (TEMPERATURE RANGE -55°C TO +85°C)
*Initial Limit Initial measurement max. 1hr after the removal from dry pack or after pretreatment at 85°C for 24 hours.
Endurance
Storage Life
Humidity
Temperature
Stability
Surge
Voltage
MIL-STD-202, Method 213, Condition C
MIL-STD-202, Method 204, Condition D
Mechanical
Shock
Vibration
032819 227
J-CAPTM Series
Highest Joules/cc Conductive Polymer Solid Electrolytic Chip Capacitors
AVX SOLID ELECTROLYTIC CAPACITOR ROADMAP
SERIES LINE UP: CONDUCTIVE POLYMER