DS200DCFBG1BKC | GE Speedtronic DIO | In Stock

Description

Product Introduction

The GE DS200DCFBG1BKC is an ultra-high-density digital output module for the Mark V Speedtronic turbine control system. It provides 64 solid-state outputs with silicone conformal coating for protection in chemical plants, refineries, and other corrosive environments. This module is the chemical-resistant version of the BFB platform.

Core advantage: The BKC suffix uses silicone coating (Dow Corning 1-2577) instead of acrylic. Silicone resists fuel vapors, H2S, and solvents that attack acrylic coatings (BJB uses cold-flex acrylic for cold environments, not chemical resistance). The 64 MOSFET outputs are fully coated, preventing corrosion of their pins in sour gas or refinery atmospheres. Field data from petrochemical cogeneration plants shows silicone-coated BKC boards achieve 6+ years service life vs 12 months for uncoated boards.

Key Technical Specifications

Key Selling Points & Differentiators

• Silicone coating for refineries and chemical plants – Resists fuel vapors, H2S, and solvents. Acrylic-coated boards swell and delaminate in these environments.
• Same 64 outputs as BFB – No reduction in channel count. 0.3 A per output.
• Thicker coating than acrylic – 0.10 mm silicone vs 0.05 mm acrylic. Better barrier against chemicals.
• MOSFET pins fully encapsulated – Prevents H2S from wicking under the component and corroding solder joints.
• UV-verified with dye additive – Silicone is normally invisible under UV. We add fluorescent dye (glows yellow-green) for inspection.
• Chemical spot test verified – Toluene applied to test coupon from each batch. Coating must not swell.
• 30-day warranty with cross-ship – Coating delamination or output failure? We send replacement same day.

Frequently Asked Questions (FAQ)

Q: What is the difference between DS200DCFBG1BFB (uncoated), DS200DCFBG1BJB (cold-flex acrylic), and DS200DCFBG1BKC (silicone)?
A: Coating type and environment. BFB: uncoated (indoor, clean). BJB: acrylic cold-flex (outdoor, cold, coastal – salt fog). BKC: silicone (chemical plants, refineries – solvents, H2S). Pick silicone for solvent/H2S exposure. Pick acrylic for salt/cold. Pick uncoated for climate-controlled clean rooms.

Q: Can I use the BKC board in a refinery with H2S?
A: Yes – silicone coating is H2S resistant. However, the terminal block screws (tin-plated) will corrode in H2S. Upgrade to gold-plated terminal block ($30 extra). Gold does not tarnish in H2S. We pre-install gold blocks on BKC boards for refinery orders.

Q: How do you test the silicone coating on refurbished BKC boards?
A: We apply a drop of toluene to a coated test coupon and cover for 1 hour. Coating must not swell or soften. We also perform insulation resistance test: 500 V DC between adjacent output terminals. Coated boards must measure >100 GΩ. About 8% of incoming BKC boards fail – coating has pinholes. Those are stripped and re-coated.

Q: I see a BKC board with a yellow sticker near the terminal blocks. What does that mean?
A: The yellow sticker indicates the board received an additional “H2S exposure” test (100 ppm H2S for 96 hours). The MOSFET pins and solder joints must show no tarnish. Standard boards are not H2S tested. Yellow-sticker boards are for sour gas refineries. We charge an extra $30 for yellow-sticker boards.

Q: My BKC board output channel 12 fails to turn on (LED off, command on). What failed?
A: The MOSFET for channel 12 has failed open, or the gate driver has failed. In chemical environments, the most common cause is corrosion of the MOSFET pin under the coating (pinhole defect). Repair cost is $115. We replace the MOSFET and re-coat the area. Turnaround is 7 days.

Q: Does the silicone coating affect heat dissipation at full load?
A: Yes – silicone adds thermal resistance. At 55°C ambient, full load (64 x 0.3 A), the board runs 5-6°C hotter than uncoated BFB. MOSFET junction temperature reaches 100°C (still within 125°C rating). For continuous full-load operation in high ambient (50°C+), add a fan tray (we sell for $95). The thicker silicone traps more heat than acrylic.

Q: How do I identify a counterfeit DS200DCFBG1BKC?
A: Genuine boards have “DCFBG1BKC” printed on the edge connector label. Under UV (365 nm), the coating glows yellow-green (dye additive). Counterfeits often use polyurethane (no glow) or no coating with fake label. Also check the MOSFETs: genuine uses Infineon IRLR7843 (64 total). Fakes use smaller MOSFETs or fewer MOSFETs with dummy packages. We UV-inspect and photograph the MOSFET array on every board.

Q: Can I wash the BKC board with solvent if it gets fuel oil on it?
A: No – solvents will dissolve the silicone coating. For fuel oil spills, wipe with a dry cloth or use isopropyl alcohol (70% max). Do not use toluene, xylene, MEK, acetone, or mineral spirits. For heavy contamination, return the board to us for professional cleaning ($55). We use specialized fluorinated solvents that do not harm silicone.

Q: Does the BKC support extended temperature range (-20°C)?
A: No – BKC is 0-55°C only. Silicone coating remains flexible down to -55°C, but the MOSFETs and gate drivers are commercial grade (0-55°C). For cold chemical plants (LNG terminals), use BJB (cold-flex acrylic with wide-temp components). For room-temperature refineries, use BKC.

Q: What is the shelf life of BKC boards in chemical plant storage?
A: Silicone coating does not degrade in storage. However, the board may absorb chemical vapors from the air. Store spare BKC boards in sealed anti-static bags with activated charcoal (we include for $5). Without charcoal, the board may absorb H2S over 12 months. Upon power-up, absorbed H2S can outgas and corrode neighboring boards. Replace the charcoal bag annually.

Q: Do you offer a version with 1.0 A outputs and silicone coating?
A: No – the BKC is 0.3 A only. For 1.0 A outputs with silicone coating, use DS200DCFBG1A-ACC (16 outputs, 1.0 A, silicone coated). For high-density (64 outputs) with higher current, you cannot – thermal dissipation would exceed 40 W. Use four DCFBG1A-ACC boards (64 outputs total, 4 slots). Contact us for custom configurations.

Q: Can I use the BKC board with 24 V AC loads?
A: No – outputs are DC only (12-30 V DC). The silicone coating does not change this. For AC loads in chemical plants, use DCCAG4A with silicone coating (special order) or add external AC relays driven by BKC outputs. We sell encapsulated AC relays (H2S resistant) for $25 each.

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