Chemicals and Accessories (click on small images for larger view)

    • Stripper for positive and negative photoresists
    • Special developer for positive presensitized boards
    • Special developer for ALUCOREX
    • Developer for negative presensitized boards
    • Sodium persulfate
    • Ferric chloride
    • Stain remover RX 3
    • Immersion tin SUR-TIN
  • Green Coat Spray coating for all PCBs
  • Films and Chemicals for Bungard Filmstar
  • UV-filter foil, yellow
  • Tenting resist
  • Solder mask
  • Reference pins for CCD
  • Fixing pins for Hellas/Filmstar

Stripper for positive and negative photoresists

This  product mainly consists of caustic soda. It helps removing positive as  well as negative photoresists from the PC boards. Compared to stripping  with solvents, it gives you two main advantages: Less appearance of  odors and safe and entire removal of any organic rests on the board  which could spoil subsequent wet processing steps. After the PCB was  stripped, it is rinsed under tap water and being neutralized. As a side  effect, all traces of etching liquid and copper will be removed from the  board and from the final rinse water. Use 50-100 g/liter of water to  prepare a stripper for positive presensitized boards. Delivery unit: 250g bag.

Developer for positive presensitized boards

This  developer ensures to get best results with our presensitized boards. It  comes in special safety bags. The contents of one bag should be  dissolved in 1 liter of water at room temperature. The shelf lilf of the  powder is nearly unlimited, the liquid developer can be stored for some  weeks in closed bottles, but only for a few hours in an open tray.  Delivery unit: 1 bag for 1 l of water.

Special developer for ALUCOREX

Since several years this developer is identical to the above mentioned product. Delivery unit: 1 bag for 1 l of water.

Developer for negative presensitized boards

Negative aqueous alkaline laminates are normally developed in a 1-2 % solution  of sodium carbonate. Also our negative developer consists of this  chemical. It is supplied in bags for 1 and for 10 liters of water,  according to development in a tray or in a machine.Delivery unit: 1 kg bag or 250g Jumbo can.

Sodium persulfate

This  product is recommended for use in tank etchers. The work temperature  should be 40 – 50 °C. The copper capacity is limited to less than 30 g/l  due to the long etching time. Etching rate is approx. 1.5-7 µm / min. Give 200-250 g of Sodium persulfate to 1 litre of water Delivery unit: 1kg bag.

Ferric chloride

We  recommend to use this product in our machines. Since beginning of 2012 the 56%  conc. granulate is no longer available. As an alternative we offer a liquid ready-to-use solution with a concentration of 40%. The solution has more than 50 g/l copper capacity and  etching rates of about 30 down to 10 µm/minute. Performance will be best at about 40-50 °C, but other  than sodium persulfate, etching can be done even at room temperature.  Ferric chloride tends to deposit a mud of copper chloride. This can be  overcome by adding small portions of hydrochloric acid to the used  (never to the fresh!) liquid. Liquid ferric-chloride ia available in 1-liter-, 5-liter- and 25-liter-units.

Stain remover RX 3

This  organic chemical comes as a white powder to be dissolved in water. It  removes all ferric chloride stains from clothes and from surfaces. Mix 1  part of powder with 2 parts of water (dissolves better in warm water)  and apply to the stain piece. Rinse with tap water. Clothes must be  machine washed afterwards! Delivery unit: 1kg bag or 250 g Jumbo can with dosing spoon.


Immersion tin SUR-TIN

SUR-TIN  is an electroless immersion tinning system which protects the PCB  copper surface and which increases solder-ability. After only 2 minutes  of application, a shiny and clear tin layer is deposit on the copper.  Afterwards, rinse with hot water and dry with a paper cloth. Set-up:  Dissolve one after the other all three components in 2.5 l of warm  water. Store the solution in an air-tight, dark bottle. It can be  re-used several times and lasts for more than 2 m² of PCBs. Delivery unit: 1 set for 2.5l of water. link to manual

Films and Chemicals for Bungard Filmstar

We  deliver high quality photo films and suitable chemicals from well known  manufacturers for our laser photoplotter Bungard Filmstar.

UV-filter foil, yellow

Some  of our materials are sensitive to UV-light. To avoid unintentional  exposure of e.g our pre-sensitized base material or the tenting  resist/solder mask foil, windows and lights should be covered with a  UV-light-filter-foil. We supply this filter foil either as cuts from a  1.2 m roll or as 1.2m long sleeves for actinic tubes.


Tenting resist

For  our Dry film laminator RLM 419p we offer a high resolution dry film as  etch resist. The rolls have a width of 304 mm and a length of either 25m  or 152m. The tenting etch resist has a thickness of 38μm and is  embedded between a separation and a protection foil. The resist is  hardened by UV-light. The non-exposed areas are removed with an alkaline  developer.

Solder mask

Professional  protection for your PCB! We offer a high resolution dry film for solder  mask application with our dry film laminator RLM 419p. The rolls have a  width of 304 mm and a length of either 25m or 76m. The solder mask has a  thickness of 75μm and is embedded between a separation and a protection  foil. The solder mask is hardened by UV-light. The non-exposed areas  are removed with an alkaline developer. After developing the solder mask  should be hardened or baked either with an UV-light exposer or in a  special oven.

Reference pins for CCD

Besides clamp, tension or vacuum fixation you can also attach your board with  reference pins to the Bungard CCD. This is especially recommended when  you want to route double sided boards. In our CAM-suite IsoCam you can  flip the board virtually over the reference pins just the same as you  flip the board in reality. This way you ensure 100 % that top and bottom  layer match to the drill holes.

Fixing pins for Hellas/Filmstar

Exposing  PCBs you have to reference the layout tracks to the drill holes. One  safe and simple possibility is to use the Bungard fixing pins. With the  Bungard CCD you drill reference holes into your PCB. These reference  holes are displayed as targets on your layout foil. The targets are  punched with the Bungard Film Punch and after that you use the fixing  pins to attach the layout to the PCB. This method is also applicable for  double sided exposure.

Chemicals for galvanic through hole plating

Our chemical set for galvanic through-hole-plating is characterized by sturdity and process safety. It consists of less bathes than regular chemistry.

Informationen  to other sets of chemicals for surfaces (e.g. ormecon-tin or ENIG (electroless nickel gold)) or multilayer (e.g. Desmear und Sealbond)  can be obtained upon request.

To all our chemicals we supply material safety data sheets (MSDS). The MSDS can be downloaded in our customer area.
© 2011 Bungard Elektronik GmbH & Co. KG