SMJE-XV12W2P

SMJE-XV12W2P SEOUL | Alldatasheet

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SMJE-XV12W2P# - Acrich2 13W Product Data Sheet Product Brief

Description

www.seoulsemicon.com 제품사진

• 아래규격에 부합하는 이미지만 가능: 없을 경우 마케팅 팀에 의뢰
• 고해상도
• 흰 배경
• 표준크기: 제품이 가득 차게 가로 5cm 규격 으로 사각 위치에 맞게 (가로세로 비율 고정) Key Message: - ex) Enabling high flux systems while reduces LED count - ex) Enabling compact systems with high reliability - ex) High reliability and High quality of light - ex) Flicker-free AC/DC LED Solution - ex) High-efficient Dimming Solution Product Family: - ex) Mid-Power LED - ex) High-Power LED for Automotive - ex) Chip on Board Product ID (part number): - ex) STW8C2SA - ex) SZ5-M0-WN-C8 Description Features and Benefits Key Applications
• 표는 반드시 “Table 번호#. 표 설명” 을 제목으로 한다. Certificate 아이콘 삽입 (해당되는 아이콘 오른쪽 에서 왼쪽방향으로 순차 삽입) Font 글씨체 표(Table) - 제목: Arial 10pt, 표 내부: Arial 8pt, 본문(Body) – Arial 9pt 1 Rev3.0 Part No. Vin [Vac] P [W] Flux Bin Flux [lm] Min. Typ. SMJE-2V12W2P3 SMJE-3V12W2P3 120 220 13a 880 1000 13b 1140 1210 SMJE-2V12W2P8 SMJE-3V12W2P8 120 220 13 13a 880 1000 Integrated AC LED Solution SMJE-XV12W2P# Acrich2 – 13W RoHS TV, PC, NB, MNT, Mobile Automotive Lighting, MR16, PAR, down light Bulb, LFT Outdoor, streetlight, tunnel, parking Home appliance Architectural, Entertainment Sign, Channel Sensor, Torch Application 응용제품 아이콘 삽입 (왼쪽 하단부터 오른쪽방향 순차 삽입) Troffer, Highbay RoHS LM-80 MacAdam 3-Step
• Bulb light
• Down light
• Factory Ceiling light
• Industrial Light MacAdam 3-Step The Acrich2 series of products are designed to be driven directly off the AC line voltage (with an SPC board) and do not need the typical AC/DC converters essential for conventional lighting products. The converter or the driver found in most general lighting products can limit the overall life of the product, but with the Acrich2 series the lifetime of the product is based on the lifetime of the LED itself. The Acrich2 series also allows for maximum design flexibility to create a compact and aesthetic luminaire. The modules also have a high power factor which can contribute to additional energy savings in the end application.
• Connects directly to AC line voltage through a Surge Protection circuit (SPC2.5)
• High Power Factor and Low THD
• Long Life Time with Simple BOM
• Miniaturization
• Lead Free Product
• RoHS Compliant

Table 1. Product Selection (CCT) Table 2. Product Selection (Flux)

80 Neutral 3700 – 4200

90 Neutral 3700 – 4200

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 2 Rev3.0 Font 글씨체 표(Table) - 제목: Arial 10pt, 표 내부: Arial 8pt, 본문(Body) – Arial 9pt  “제품 명 – 제품 군” 을 기입하십시오. 제품 군은 홈페이지 응용분야 분류기준을 참고한다. (예) SZ5M0WWC9 – High-power LED Table of Contents Index

• Product Brief 1
• Table of Contents 2
• Performance Characteristics 3
• Thermal Resistance 5
• Characteristics Graph 6
• Color Bin Structure 11
• Part List 18
• Mechanical Dimensions 19
• Circuit Drawing 20
• Marking Information 22
• Packing & Label Information 23
• Handling of Silicone Resin for LEDs 25
• Precaution for Use 26
• Company Information 28

Table 3. Electro Optical Characteristics, Ta = 25ºC (2) ФV is the total luminous flux output measured with an integrated sphere. (3) Correlated Color Temperature is derived from the CIE 1931 Chromaticity diagram. solder pad temperature should be below 70℃. Viewing Angle 2Θ1/2 120 deg.

Table 4. Absolute Maximum Ratings, Ta = 25ºC

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 5 Rev3.0 Thermal Resistance Part Package Power Dissipation [W] Maximum Junction Temperature [℃] Rθj-s [℃/W] Acrich2 LED SAWZKG0B Max 0.58 125 27 The Acrich2 LED has a thermal resistance of 27℃/W from junction of the LED to the LED lead. The maximum junction temperature of the Acrich2 LED package is 125℃, therefore the maximum lead temperature Ts_max is Ts_max = Tj_max - (Rθj-s * Pd) Although this is the maximum lead temperature, it is recommended to keep the lead temperature under 70℃. Notes : (1) Z = 8 : CRI 80 PKG, Z=9 : CRI 90 PKG

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 6 Rev3.0 Characteristics Graph Product Data Sheet  차트 사각형에 차트의 X축/ Y축을 맞춘다. 0.2 0.4 0.6 0.8 1.2 300 400 500 600 700 800 Relative Spectral Power Distribution Wavelength[nm] Relative Spectral Power Distribution at Ta=25oC Fig 1. Relative Spectral Distribution vs. Wavelength Characteristic – G, H Fig 2. Relative Spectral Distribution vs. Wavelength Characteristic – E, F 0.2 0.4 0.6 0.8 1.2 300 400 500 600 700 800 Relative Spectral Power Distribution Wavelength[nm] Relative Spectral Power Distribution at Ta=25oC

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 7 Rev3.0 Characteristics Graph Product Data Sheet  차트 사각형에 차트의 X축/ Y축을 맞춘다. Fig 3. Relative Spectral Distribution vs. Wavelength Characteristic – B, C 0.2 0.4 0.6 0.8 1.2 300 400 500 600 700 800 Relative Spectral Power Distribution Wavelength[nm] Relative Spectral Power Distribution at Ta=25oC

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 8 Rev3.0 Characteristics Graph Product Data Sheet  차트 사각형에 차트의 X축/ Y축을 맞춘다. Fig 4. Relative Power Distribution vs. Voltage at Ta =25℃, 120V 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 100 110 120 130 140 150 160 Relative Power Distribution vs. Voltage at Ta=25oC Relative Power Voltage[RMS,V] 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 200 210 220 230 240 250 260 Relative Power Distribution Voltage[V] Relative Power Distribution vs. Voltage at Ta=25oC All Color Temperatures Relative Power Voltage[RMS,V] Fig 5. Relative Power Distribution vs. Voltage at Ta =25℃, 220V

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 9 Rev3.0 Characteristics Graph Product Data Sheet  차트 사각형에 차트의 X축/ Y축을 맞춘다. Fig 6. Relative Luminous Flux vs. Voltage at Ta =25℃, 120V 0.6 0.8 1.2 1.4 1.6 100 110 120 130 140 150 160 Relative Luminous Flux [a.u.] Voltage[RMS,V] Relative Luminous flux vs. Forward Voltage, Ta=25oC All Color Temperatures 0.6 0.8 1.2 1.4 1.6 200 210 220 230 240 250 260 Relative Luminous Flux [a.u.] Voltage[RMS,V] Relative Luminous flux vs. Forward Voltage, Ta=25oC All Color Temperatures Fig 7. Relative Luminous Flux vs. Voltage at Ta =25℃, 220V

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 10 Rev3.0 Characteristics Graph Product Data Sheet  차트 사각형에 차트의 X축/ Y축을 맞춘다. Fig 8. Radiant Pattern, Ta =25℃

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 11 Rev3.0 Color Bin Structure  Color Bin CIE 그래프는 한 장에 넣는다. CIE Chromaticity Diagram Bin x y Bin x y Bin x y BMC 0.3266 0.3428 CMC 0.3427 0.3568 EMC 0.3806 0.3822 GMC 0.4336 0.4067 HMC 0.4581 0.4143 0.4294 0.3977 0.4531 0.4051 0.4354 0.3999 0.4589 0.4065 0.4398 0.4089 0.4641 0.4157 0.28 0.30 0.32 0.34 0.36 0.38 0.40 0.42 0.44 0.46 F 3700K 4200K 4700K H E G C B 5300K 2900K 2600K 3200K 6000K y x ANSI MacAdam 3-Step BMC CMC EMC GMC HMC

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 12 Rev3.0 Color Bin Structure  Color Bin CIE 그래프는 한 장에 넣는다. Bin x y Bin x y Bin x y Bin x y B11 0.3207 0.3462 B21 0.3250 0.3501 B31 0.3292 0.3539 B41 0.3334 0.3578 B12 0.3211 0.3407 B22 0.3252 0.3444 B32 0.3293 0.3481 B42 0.3333 0.3518 B13 0.3215 0.3353 B23 0.3254 0.3388 B33 0.3293 0.3423 B43 0.3332 0.3458 B14 0.3218 0.3298 B24 0.3256 0.3331 B34 0.3294 0.3364 B44 0.3331 0.3398 CIE Chromaticity Diagram BMC 0.32 0.33 0.34 0.35 0.36 B44 B43 B42 B41 B34 B33 B32 B31 B24 B23 B22 B21 B14 B13 B12 5600K B11 5300K 6000K y x

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 13 Rev3.0 Color Bin Structure  Color Bin CIE 그래프는 한 장에 넣는다. Bin x y Bin x y Bin x y Bin x y C11 0.3376 0.3616 C21 0.3420 0.3652 C31 0.3463 0.3687 C41 0.3507 0.3724 C12 0.3374 0.3554 C22 0.3415 0.3588 C32 0.3457 0.3622 C42 0.3500 0.3657 C13 0.3371 0.3493 C23 0.3411 0.3525 C33 0.3452 0.3558 C43 0.3492 0.3591 C14 0.3369 0.3431 C24 0.3407 0.3462 C34 0.3446 0.3493 C44 0.3485 0.3524 CIE Chromaticity Diagram CMC 0.33 0.34 0.35 0.36 0.37 0.38 C44 C43 C42 C41 C34 C33 C32 C31 C24 C23 C22 C21 C14 C13 C12 5000K C11 4700K 5300K y x

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 14 Rev3.0 Color Bin Structure  Color Bin CIE 그래프는 한 장에 넣는다. Bin x y Bin x y Bin x y Bin x y E11 0.3736 0.3874 E21 0.3804 0.3917 E31 0.3871 0.3959 E41 0.3939 0.4002 E12 0.3720 0.3800 E22 0.3784 0.3841 E32 0.3849 0.3881 E42 0.3914 0.3922 E13 0.3703 0.3726 E23 0.3765 0.3765 E33 0.3828 0.3803 E43 0.3890 0.3842 E14 0.3687 0.3652 E24 0.3746 0.3689 E34 0.3806 0.3725 E44 0.3865 0.3762 CIE Chromaticity Diagram EMC 0.35 0.36 0.37 0.38 0.39 0.40 0.41 E44 E43 E42 E41 E34 E33 E32 E31 E24 E23 E22 E21 E14 E13 E12 4000K E11 3700K 4200K y x

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 15 Rev3.0 Color Bin Structure  Color Bin CIE 그래프는 한 장에 넣는다. Bin x y Bin x y Bin x y Bin x y F11 0.3996 0.4015 F21 0.4071 0.4052 F31 0.4146 0.4089 F41 0.4223 0.4127 F12 0.3969 0.3934 F22 0.4042 0.3969 F32 0.4114 0.4005 F42 0.4187 0.4041 F13 0.3943 0.3853 F23 0.4012 0.3886 F33 0.4082 0.3920 F43 0.4152 0.3955 F14 0.3916 0.3771 F24 0.3983 0.3803 F34 0.4049 0.3836 F44 0.4117 0.3869 CIE Chromaticity Diagram 0.37 0.38 0.39 0.40 0.41 0.42 F44 F43 F42 F41 F34 F33 F32 F31 F24 F23 F22 F21 F14 F13 F12 3500K F11 3200K 3700K y x

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 16 Rev3.0 Color Bin Structure  Color Bin CIE 그래프는 한 장에 넣는다. Bin x y Bin x y Bin x y Bin x y G11 0.4299 0.4165 G21 0.4364 0.4188 G31 0.4430 0.4212 G41 0.4496 0.4236 G12 0.4261 0.4077 G22 0.4324 0.4100 G32 0.4387 0.4122 G42 0.4451 0.4145 G13 0.4223 0.3990 G23 0.4284 0.4011 G33 0.4345 0.4033 G43 0.4406 0.4055 G14 0.4243 0.3922 G24 0.4302 0.3943 G34 0.4302 0.3943 G44 0.4361 0.3964 CIE Chromaticity Diagram GMC 0.38 0.39 0.40 0.41 0.42 0.43 G44 G43 G42 G41 G34 G33 G32 G31 G24 G23 G22 G21 G14 G13 G12 3000K G11 2900K 3200K y x

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 17 Rev3.0 Color Bin Structure  Color Bin CIE 그래프는 한 장에 넣는다. Bin x y Bin x y Bin x y Bin x y H11 0.4562 0.4260 H21 0.4625 0.4275 H31 0.4687 0.4289 H41 0.4750 0.4304 H12 0.4515 0.4168 H22 0.4575 0.4182 H32 0.4636 0.4197 H42 0.4697 0.4211 H13 0.4468 0.4077 H23 0.4526 0.4090 H33 0.4585 0.4104 H43 0.4644 0.4118 H14 0.4420 0.3985 H24 0.4477 0.3998 H34 0.4534 0.4012 H44 0.4591 0.4025 CIE Chromaticity Diagram HMC 0.38 0.39 0.40 0.41 0.42 0.43 0.44 H44 H43 H42 H41 H34 H33 H32 H31 H24 H23 H22 H21 H14 H13 H12 2700K H11 2600K 2900K y x

Table 5. Part List

1 PCB -

2 LED -

3 IC IC

4 Resistor R1

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 19 Rev3.0 Mechanical Dimensions Notes : (1) All dimensions are in millimeters. (Tolerance : ±0.2) (2) Scale : None

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 20 Rev3.0 Circuit Drawing SMJE-2V12W2P# (120V) Acrich module (SMJJ-SPCR0AC2.5) Surge Protection Circuit 2.5 (Additional daughter board) VP(-) VP(+)

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 21 Rev3.0 Circuit Drawing SMJE-3V12W2P# (220V) Acrich module (SMJJ-SPCR0AC2.5) Surge Protection Circuit 2.5 (Additional daughter board) VP(-) VP(+)

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 22 Rev3.0 Marking Information A (1) Single Bin ex) 140101 3bZG32B - Description A : 1 4 0 1 0 1 3 b Z G 3 2 B ② ④ ① SMT Date (YYMMDD, 6 Digits) ② CRI (1 Digits) ③ LED Module Luminous Intensity ④ LED PKG. Luminous Intensity Bin (1 Digits) ⑤ LED PKG. Color Bin (3 Digits) ⑥ Vf (1 Digits) ③ ⑤ ⑥ A : Marking (2) Combination Bin ex) 140101 3bZZG11 - Description 1 4 0 1 0 1 3 b Z Z G 1 1 ① SMT Date (YYMMDD, 6 Digits) ② CRI (1 Digits) ③ Module Flux Bin (3 Digits) ④ CCT (1 Digit) ⑤ CCT Combination NO. (1 Digit) ⑥ VF Combination NO. (1 Digit) CRI Module Flux Bin CCT CCT Combination VF Combination 3 80 a WW 880 1000 1140 B 5300 5600 6000 0 22 33 1 A A 8 90 WX C 4700 5000 5300 1 23 32 2 A B WY E 3700 4000 4200 2 33 22 3 B A XX G 2900 3000 3200 3 32 23 4 A C XY H 2600 2700 2900 4 MC MC 5 C A YY C Inner (4bin) Outer (12bin) 6 B B b ZZ 1140 1210 1300

7 B C

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 23 Rev3.0 Packing 1. Tray information 2. Tray stack and taping

• 10 LED module trays and additional 2 dummy trays each up and down of box
• Add silica gel (1EA) on top of the tray 3. Sealing packing Dielectric sealing pack (700x700) 4. Box information & packing
• 400 PCS modules per BOX 1EA
• 20 PCS LED modules packed per tray ** 1 Box : 20 PCS per tray x 20 trays = 400 PCS 10EA trays with LED modules

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 24 Rev3.0 Label Information TOTAL Quantity XX SEOUL SEMICONDUCTOR CO.,LTD. Notes (1) It is attached to the bottom right corner of the box. Model No. SMJE-XV12W2P# (1) IIIII II IIIII III Rank XXXXXXX (2) IIIII II IIIII III Type STD / 3-Step (3) Quantity XX IIIII II IIIII III Lot No. YYMDDXXXXX-XXXXXXX IIIII II IIIII III SEOUL SEMICONDUCTOR CO.,LTD. Notes (1) The model number designation is explained as follow SMJD : Seoul Semiconductor internal code XV : Input Voltage (2V = 120V, 3V = 220V) 12W : About Power Consumption 1 : Acrich IC Version P# : MJT PKG (P3 : SAW8KG0B, P8 : SAW9KG0B) (2) It represents the LED module rank. See LED Marking Detail (3) It represents MacAdam 3-Step. (4) It is attached to the top left corner of the box.

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 25 Rev3.0 Handling of Silicone Resin for LEDs (1) Acrich2 series is encapsulated with silicone resin for high optical efficiency. (2) Please do not touch the silicone resin area with sharp objects such as pincette(tweezers). (3) Finger prints on silicone resin area may affect the performance. (4) Please store LEDs in covered containers to prevent dust accumulation as this may affect performance. (5) Excessive force more than 3000gf to the silicone lens can result in fatal or permanent damage with LEDs. (6) Please do not cover the silicone resin area with any other resins such as epoxy, urethane, etc.

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 26 Rev3.0 Precaution for Use 내용의 번호는 ( )을 사용하여 넣는다. (1) Please review the Acrich2 Application Note for proper protective circuitry usage. (2) Please note, Acrich2 products run off of high voltage, therefore caution should be taken when working near Acrich2 products. (3) Make sure proper discharge prior to starting work. (4) DO NOT touch any of the circuit board, components or terminals with body or metal while circuit is active. (5) Please do not add or change wires while Acrich2 circuit is active. (6) Long time exposure to sunlight or UV can cause the lens to discolor. (7) Please do not use adhesives to attach the LED that outgas organic vapor. (8) Please do not use together with the materials containing Sulfur. (9) Please do not assemble in conditions of high moisture and/or oxidizing gas such as Cl, H2S, NH3, SO2, NOx, etc. (10) Please do not make any modification on module. (11) Please be cautious when soldering to board so as not to create a short between different trace patterns. (12) Do not impact or place pressure on this product because even a small amount of pressure can damage the product. The product should also not be placed in high temperatures, high humidity or direct sunlight since the device is sensitive to these conditions. (13) When storing devices for a long period of time before usage, please following these guidelines: * The devices should be stored in the anti-static bag that it was shipped in from Seoul-Semiconductor with opening. * If the anti-static bag has been opened, re-seal preventing air and moisture from being present in the bag. (14) LEDs and IC are sensitive to Electro-Static Discharge (ESD) and Electrical Over Stress (EOS). The Acrich2 product should also not be installed in end equipment without ESD protection. Below is a list of suggestions that Seoul Semiconductor purposes to minimize these effects. a. ESD (Electro Static Discharge) Electrostatic discharge (ESD) is the defined as the release of static electricity when two objects come into contact. While most ESD events are considered harmless, it can be an expensive problem in many industrial environments during production and storage. The damage from ESD to an LEDs may cause the product to demonstrate unusual characteristics such as:

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 27 Rev3.0 Precaution for Use 내용의 번호는 ( )을 사용하여 넣는다. - Increase in reverse leakage current lowered turn-on voltage - Abnormal emissions from the LED at low current The following recommendations are suggested to help minimize the potential for an ESD event. One or more recommended work area suggestions: - Ionizing fan setup - ESD table/shelf mat made of conductive materials - ESD safe storage containers One or more personnel suggestion options: - Antistatic wrist-strap - Antistatic material shoes - Antistatic clothes Environmental controls: - Humidity control (ESD gets worse in a dry environment) b. EOS (Electrical Over Stress) Electrical Over-Stress (EOS) is defined as damage that may occur when an electronic device is subjected to a current or voltage that is beyond the maximum specification limits of the device. The effects from an EOS event can be noticed through product performance like: - Changes to the performance of the LED package (If the damage is around the bond pad area and since the package is completely encapsulated the package may turn on but flicker show severe performance degradation.) - Changes to the light output of the luminaire from component failure - Components on the board not operating at determined drive power Failure of performance from entire fixture due to changes in circuit voltage and current across total circuit causing trickle down failures. It is impossible to predict the failure mode of every LED exposed to electrical overstress as the failure modes have been investigated to vary, but there are some common signs that will indicate an EOS event has occurred: - Damaged may be noticed to the bond wires (appearing similar to a blown fuse) - Damage to the bond pads located on the emission surface of the LED package (shadowing can be noticed around the bond pads while viewing through a microscope) - Anomalies noticed in the encapsulation and phosphor around the bond wires - This damage usually appears due to the thermal stress produced during the EOS event c. To help minimize the damage from an EOS event Seoul Semiconductor recommends utilizing: - A surge protection circuit - An appropriately rated over voltage protection device - A current limiting device

www.seoulsemicon.com Product Data Sheet SMJE-XV12W2P# - Acrich2 13W 28 Rev3.0 Company Information Published by Seoul Semiconductor © 2013 All Rights Reserved. Company Information Seoul Semiconductor (www.SeoulSemicon.com) manufacturers and packages a wide selection of light emitting diodes (LEDs) for the automotive, general illumination/lighting, Home appliance, signage and back lighting markets. The company is the world’s fifth largest LED supplier, holding more than 10,000 patents globally, while offering a wide range of LED technology and production capacity in areas such as “nPola”, "Acrich", the world’s first commercially produced AC LED, and "Acrich MJT - Multi-Junction Technology" a proprietary family of high-voltage LEDs. The company’s broad product portfolio includes a wide array of package and device choices such as Acrich and Acirch2, high-brightness LEDs, mid-power LEDs, side-view LEDs, and through-hole type LEDs as well as custom modules, displays, and sensors. Legal Disclaimer Information in this document is provided in connection with Seoul Semiconductor products. With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Seoul Semiconductor hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. The appearance and specifications of the product can be changed to improve the quality and/or performance without notice.