RONOVEL C AUROSPEED CVD

Transcription

1 RONOVEL C AUROSPEED CVD COBALT-ALLOYED ELECTROLYTIC GOLD For Electronic Finishing Applications Regional Product Availability N.America Japan/Korea Asia Europe DESCRIPTION Ronovel C and Aurospeed CVD electrolytic gold products are totally versatile cobalt-alloyed, hard-gold electroplating products are designed for high-speed selective plating applications, such as reel-to-reel connector plating, strip or strip plating, automatic printed circuit tab plating and deep tank circuit plating. Ronovel C electrolytic gold should be used where a highly-even thickness distribution across the plated part is desired. Processes using Ronovel C and Aurospeed CVD electrolytic gold can be tailored to suit different plating heads/cells simply by adjusting the following parameters: Gold metal concentration, cobalt metal concentration, temperature and ph. ADVANTAGES Total flexibility of operation Low initial cost of make-up Low gold metal inventory Low dragout losses Increased line speeds and extended production DEPOSIT PROPERTIES Purity: % Cobalt Hardness: Knoop Deposit Density: 17.5 g/cc Deposits meet Mil-G45204C Type I and II, Grade C specifications. RONOVEL C BATH MAKE-UP Barrel Controlled Jet Chemicals Required Metric (U.S.) Aurospeed CVD Make-up Liquid 750 ml/l (75% v/v) Ronovel Additive 30 ml/l (3% v/v) Aurospeed Cobalt Concentrate As required As required 2009 Rohm and Haas Electronic Materials. All rights reserved. Not to be reproduced, in whole or part, without the express permission of Rohm and Haas Electronic Materials. 1. Add Aurospeed CVD Make-up Liquid to a clean tank. 2. Add Ronovel Additive. Mix thoroughly. 3. Add Aurospeed Cobalt Concentrate. Mix thoroughly. 4. Dissolve separately in warm water and add to tank. Mix thoroughly. 5. Dilute to final volume with deionized water. Mix thoroughly. 6. Check ph, specific gravity, cobalt concentration and gold concentration. Adjust, if necessary. AUROSPEED CVD BATH MAKE-UP Controlled Depth Chemicals Required Aurospeed CVD Make-up Liquid Aurospeed Cobalt Concentrate Jet Chemicals Required Aurospeed CVD Make-up Liquid Aurospeed Cobalt Concentrate Metric (U.S.) 750 ml/l (75% v/v) 30 ml/l (3% v/v) As required Metric (U.S.) 750 ml/l (75% v/v) 40 ml/l (4% v/v) As required 1. Add Aurospeed CVD Make-up Liquid. 2. Add Aurospeed Cobalt Concentrate. Mix thoroughly. 3. Dissolve separately in warm water and add to tank. Mix thoroughly. 4. Dilute to final volume with deionized water. Mix thoroughly. 5. Check ph, specific gravity, cobalt concentration and gold concentration. Adjust, if necessary. PF04N015, Rev. 2 March 2009

2 2 RONOVEL C BATH OPERATION LOW-SPEED RACK-AND-BARREL OPERATION Metric Gold Concentration g/l 4.0 g/l CONTROLLED DEPTH SELECTIVE CELL OPERATION Metric Gold Concentration g/l 8.0 g/l Cobalt Concentration g/l 0.75 g/l Cobalt Concentration g/l 1.0 g/l ph Specific Gravity Temperature C 35 C Specific Gravity Temperature C 45 C Barrel movement plus solution movement Rapid solution combined with cathode strip movement Current Density A/dm 2 Current Density 5 50 A/dm mg/amp min mg/amp min. Deposition Rate microns/minute at 0.5 A/dm 2 Deposition Rate 0.05 microns/second at 10 A/dm 2 LOW-SPEED RACK-AND-BARREL OPERATION U.S. CONTROLLED DEPTH SELECTIVE CELL OPERATION U.S. Gold Concentration toz./gal. 0.5 toz./gal. Gold Concentration toz./gal. 1.0 toz./gal. Cobalt Concentration 500 1,000 ppm 750 ppm Cobalt Concentration 750 1,500 ppm 1,000 ppm ph Temperature F 100 F ph Temperature F 115 F Barrel movement plus solution movement Rapid solution combined with cathode strip movement Current Density 1 30 A/ft % Deposition Rate 50 microinches/minute at 5 A/ft 2 Current Density A/ft % Deposition Rate 2.0 microinches/second at 100 A/ft 2

3 3 JET AGITATION SELECTIVE CELLS Metric Gold Concentration 6 16 g/l 12.0 g/l Cobalt Concentration g/l 1.2 g/l Specific Gravity Temperature C 52 C High-speed solution jetting Current Density 5 75 A/dm mg/amp min. Deposition Rate microns/second at 50 A/dm 2 AUROSPEED CVD BATH OPERATION CONTROLLED DEPTH SELECTIVE CELL OPERATION Metric Gold Concentration g/l 12.0 g/l Cobalt Concentration g/l 0.75 g/l Specific Gravity Temperature C 45 C Rapid solution combined with cathode strip movement Current Density 5 20 A/dm mg/amp min. Deposition Rate 0.06 microns/second at 10 A/dm 2 JET AGITATION SELECTIVE CELLS U.S. Gold Concentration toz./gal. 1.6 toz./gal. Cobalt Concentration 750 1,500 ppm 1,200 ppm Temperature F 125 F High-speed solution jetting Current Density A/ft % Deposition Rate 7.0 microinches/second at 500 A/ft 2 CONTROLLED DEPTH SELECTIVE CELL OPERATION U.S. Gold Concentration toz./gal. 1.5 toz./gal. Cobalt Concentration 500 1,000 ppm ph ppm Temperature F 115 F Rapid solution combined with cathode strip movement Current Density A/ft % Deposition Rate 2.5 microinches/second at 100 A/ft 2

4 4 JET AGITATION SELECTIVE CELLS Metric Gold Concentration g/l 16.0 g/l Cobalt Concentration g/l 1.0 g/l Specific Gravity Temperature C 52 C High-speed solution jetting Current Density A/dm mg/amp min. Deposition Rate 0.2 microns/minute at 30 A/dm 2 JET AGITATION SELECTIVE CELLS U.S. Gold Concentration toz./gal. 2.0 toz./gal. Cobalt Concentration 500 1,500 ppm 1,000 ppm Aurospeed Cobalt Concentrate Aurospeed Cobalt Concentrate contains 25.0 g/l cobalt metal. It is primarily used for make-up but can be used when increases in cobalt concentration are necessary. A 1 ml/l addition of Aurospeed Cobalt Concentrate will raise the cobalt concentration by g/l (25 ppm). Ronovel Additive Ronovel Additive is the key additive in the process using Ronovel C electrolytic gold. With a given gold concentration, ph and temperature, the Ronovel Additive produces a selective drop in current density at the high current density areas, which helps provide an even thickness distribution across the plated part. As a result, no burning is experienced during proper operation. Additions of Ronovel Additive may only be necessary when: Excessive dragout is experienced After heavy carbon treatments Long periods of time without using Ronovel C Unit Replenisher Ronovel Additive can be analyzed by UV spectrophotometry or by the Rohm and Haas Electronic Materials laboratory. ph Temperature F 125 F High-speed solution jetting Current Density A/ft % Ronovel C Unit Replenisher Under normal conditions, cobalt metal and all additives are replenished by additions of Ronovel C Unit Replenisher. For every troy ounce of gold metal replenished, add 38.0 ml/l of Ronovel C Unit Replenisher. Using Replenisher is highly recommended and regular use will ensure adequate concentrations of Additive and cobalt. Deposition Rate 8.0 microinches/second at 300 A/ft 2 BATH MAINTENANCE For the process using Ronovel electrolytic gold, gold metal is replenished by additions of Potassium Gold Cyanide. Replenishment is carried out on the basis of analysis or on ampere minute schedule confirmed by analysis. Add 1.0 troy ounce of gold metal every ampere minutes dependent on cathode efficiency. For the process using Aurospeed CVD electrolytic gold, gold metal is replenished by additions of Potassium Gold Cyanide. Replenishment is carried out on the basis of analysis or on ampere minute schedule confirmed by analysis. Add 1.0 troy ounce of gold metal every ampere minutes dependent on cathode efficiency. ph ph should be measured daily and maintained in the recommended range by additions of Aurospeed Acid Salt or potassium hydroxide. At a given gold concentration, decreasing the solution ph will increase the effect of Ronovel Additive in the working solution causing a selective decrease in cathode efficiency at high current density. Increasing the ph will have the opposite effect. 5.0 g/l Aurospeed Acid Salt will lower ph by 0.1 units 5.0 g/l potassium hydroxide will raise ph by 0.1 units Specific Gravity Specific gravity should be measured daily and maintained in the recommended range by additions of Aurospeed Complexer Salt g/l Aurospeed Complexer Salt will raise the specific gravity by 0.01 SG (1 Baumé).

5 5 Effects of Varying Solution Parameters Color Current Density % Nickel in Cathode Range Deposit Efficiency Gold Concentration Increase Richer Higher Lower Higher Decrease Paler Lower Higher Lower Cobalt Concentration Increase Paler Wider Higher Lower Decrease Richer Narrower Lower Higher ph Increase Richer Narrower Lower Higher Decrease Paler Wider Higher Lower Temperature Increase Richer Higher Lower Higher Decrease Paler Wider Higher Lower Cobalt Chelate Cobalt Ratio Increase Richer Higher Lower Higher Decrease Paler Wider Higher Lower Effects of Metallic Impurities Maximum Concentration Effect Lead 10 ppm Low current density dullness Copper 100 ppm Reduced cathode efficiency/ low current density dullness Iron 200 ppm Reduced cathode efficiency/ low purity deposits Zinc 200 ppm Reduced cathode efficiency/ low purity deposits 1. Add Aurospeed CVD Make-up Liquid to clean tank. 2. Add Ronovel Additive. Mix thoroughly. 3. Add Aurospeed Cobalt Concentrate. Mix thoroughly. 4. Dissolve separately in warm deionized water and add to tank. 5. Adjust to final volume with deionized water. 6. Check ph and specific gravity. Adjust if necessary. STRIKE PROCESS FOR RONOVEL C AND AUROSPEED CVD ELECTROLYTIC GOLD Low-efficiency Gold Strike Process A low-efficiency gold strike process designed to produce an initial thin highly adherent gold electrodeposit on the components to be plated with Ronovel C or Aurospeed CVD electrolytic gold. RONOVEL C STRIKE BATH MAKE-UP Chemicals Required Metric (U.S.) Aurospeed CVD Make-up Liquid 500 ml/l (50% v/v) Ronovel Additive 30 ml/l (3% v/v) Aurospeed Cobalt Concentrate 10 ml/l (1.0 v/v) As required AUROSPEED CVD STRIKE BATH MAKE-UP Chemicals Required Metric (U.S.) Aurospeed CVD Make-up Liquid 500 ml/l (50% v/v) Aurospeed Cobalt Concentrate 10 ml/l (1.0 v/v) As required 1. Add Aurospeed CVD Make-up Liquid to clean tank. 2. Add Aurospeed Cobalt Concentrate. Mix thoroughly 3. Dissolve separately in warm deionized water and add to tank. 4. Adjust to final volume with deionized water. 5. Check ph and specific gravity. Adjust if necessary.

6 6 RONOVEL BATH OPERATION C AND AUROSPEED FOR RONOVEL CVD C AND AUROSPEED CVD STRIKE Metric Gold Concentration 1 3 g/l 2 g/l Cobalt Concentration g/l ph g/l RONOVEL C PURE GOLD STRIKE BATH MAKE-UP Chemicals Required Metric (U.S.) Aurospeed CVD Make-up Liquid 750 ml/l (75% v/v) Ronovel Additive 30 ml/l (3% v/v) Pure Gold Brightener 5 ml/l (0.5 v/v) Specific Gravity Temperature C 25 C As required Rapid solution and mechanical Current Density A/dm mg/amp min. Deposition Rate microns/minute at 0.2 A/dm 2 BATH OPERATION FOR RONOVEL C AND AUROSPEED CVD STRIKE U.S. Gold Concentration Cobalt Concentration ppm toz./gal toz./gal. ph ppm Specific Gravity 7 13 Baumé 10 Baumé Temperature F 75 F Rapid solution and mechanical Current Density 1 50 A/ft % Deposition Rate 1.5 microinches/minute at 2 A/ft 2 1. Add Aurospeed CVD Make-up Liquid to clean tank. 2. Add Ronovel Additive. Mix thoroughly. 3. Add Pure Gold Brightener. Mix thoroughly. 4. Dissolve separately in warm deionized water and add to tank. 5. Adjust to final volume with deionized water. 6. Check ph and specific gravity. Adjust if necessary. AUROSPEED CVD PURE GOLD STRIKE BATH MAKE-UP Chemicals Required Metric (U.S.) Aurospeed CVD Make-up Liquid 750 ml/l (75% v/v) Pure Gold Brightener 5 ml/l (0.5% v/v) As required 1. Add Aurospeed CVD Make-up Liquid to clean tank. PURE GOLD STRIKE PROCESS Low-efficiency Gold Strike Process A low-efficiency gold strike process designed to produce an initial think, highly-adherent gold electrodeposit on the components to be plated with Ronovel C or Aurospeed CVD electrolytic gold. To be used where a pure 24 kt underplate is desired or specified. 2. Add Pure Gold Brightener. Mix thoroughly. 3. Dissolve separately in warm deionized water and add to tank. 4. Adjust to final volume with deionized water. 5. Check ph and specific gravity. Adjust if necessary.

7 7 BATH OPERATION FOR RONOVEL C AND AUROSPEED CVD PURE GOLD STRIKE Metric PURE GOLD BRIGHTENER For every troy ounce gold metal replenished, add 38.0 ml Pure Gold Brightener. Gold Concentration 1 6 g/l ph Specific Gravity Temperature C 48 C Dependent on mode of operation Rapid solution and mechanical Current Density A/dm mg/amp min. EQUIPMENT Tanks: Anodes: Heaters: Filtration: Polypropylene Platinized (titanium, tantalum or columbium) Silica sheathed or PTFE-coated immersion micron filters with pump capacity for four turnovers per hour Deposition Rate 0.05 microns/minute at 0.2 A/dm microns/second at 5.0 A/dm 2 BATH OPERATION FOR RONOVEL C AND AUROSPEED CVD PURE GOLD STRIKE Metric Gold Concentration toz./gal. Dependent on mode of operation ph Specific Gravity Baumé 12 Baumé Temperature F 120 F BATH MAINTENANCE Gold Metal Rapid solution and mechanical Current Density 1 50 A/ft % Deposition Rate 2.0 microinches/minute at 2 A/ft microinches/second at 50 A/ft 2 Gold metal is replenished by addition of Potassium Gold Cyanide. Replenishment is carried out on the basis of analysis or on an ampere minute schedule confirmed by analysis. Add 1 troy oz. gold metal every ampere minutes dependent on cathode efficiency. EQUIPMENT PREPARATION Prior to make-up, the process tank and ancillary equipment should be thoroughly cleaned as outlined below. This procedure is particularly important for new equipment or equipment previously used for other processes. I. Cleaning Solution a) Trisodium phosphate: 15 g/l (2 oz./gal.) b) Sodium hydroxide: 15 g/l (2 oz./gal.) II. III. Leaching Solution Aurospeed Acid Salt: 50 g/l (5% w/v) Procedure a) Thoroughly wash down tank and ancillary equipment with clean water. b) Recirculate water through the complete system to remove water soluble materials. c) Discard water. d) Add cleaning solution to the tank, heat to C ( F) and recirculate through the complete system for a minimum of 8 hours. e) Discard cleaning solution. f) Recirculate water through the complete system. g) Discard rinse water. h) Add leaching solution and recirculate the complete system. i) Leave leaching solution in tank for a minimum of 8 hours. j) Discard leaching solution. k) Recirculate water through the complete system. l) Discard rinse water.

8 8 PRODUCT DATA For the specific Product Data values, please refer to the Certificate of Analysis provided with the shipment of the product(s). ASSOCIATED PRODUCTS Aurospeed CVD Make-up Liquid Aurospeed Cobalt Concentrate Ronovel C Unit Replenisher Aurospeed Acid Salt Aurospeed Complexer Salt Ronovel Additive Pure Gold Brightener HANDLING PRECAUTIONS Before using this product, consult the Material Safety Data Sheet (MSDS)/Safety Data Sheet (SDS) for details on product hazards, recommended handling precautions and product storage. WARNING! DO NOT ACIDIFY this product or working bath containing this product below specified operating ph range, or below ph 7 if no range is specified. Acidification may release highly toxic cyanide gas, which can be fatal if swallowed, inhaled or absorbed through the skin. CAUTION! Keep combustible and/or flammable products and their vapors away from heat, sparks, flames and other sources of ignition including static discharge. Processing or operating at temperatures near or above product flashpoint may pose a fire hazard. Use appropriate grounding and bonding techniques to manage static discharge hazards. CAUTION! Failure to maintain proper volume level when using immersion heaters can expose tank and solution to excessive heat resulting in a possible combustion hazard, particularly when plastic tanks are used. STORAGE Store products in tightly closed original containers at temperatures recommended on the product label. DISPOSAL CONSIDERATIONS Dispose in accordance with all local, state (provincial) and federal regulations. Empty containers may contain hazardous residues. This material and its container must be disposed in a safe and legal manner. It is the user's responsibility to verify that treatment and disposal procedures comply with local, state (provincial) and federal regulations. Contact your Rohm and Haas Electronic Materials Technical Representative for more information. Aurospeed, Ronoval, Rohm and Haas, and Rohm and Haas Electronic Materials are trademarks of Rohm and Haas Company, Philadelphia, PA, USA, or its affiliates. UNITED STATES Marlborough, MA Tel: Fax: JAPAN Tokyo Tel: Fax: ASIA Hong Kong Tel: Fax: EUROPE Paris, France Tel: Fax: Freeport, NY Tel: Fax: For Industrial Use Only. This information is based on our experience and is, to the best of our knowledge, true and accurate. However, since conditions for use and handling of products are beyond our control, we make no guarantee or warranty, expressed or implied, regarding the information, the use, handling, storage or possession of the products, or the applications of any process described herein or the results sought to be obtained. Nothing herein shall be construed as a recommendation to use any product in violation of any patent rights.