Code Blue CB1S00769 Wirewound Resistor Assembly
Overview
The Code Blue CB1S00769 is a 1-watt wirewound resistor assembly built on a glass epoxy substrate with PoE (Power over Ethernet) rating and precision coat-insulation. This unit is engineered for industrial surveillance and network infrastructure applications where component stability and environmental durability are non-negotiable. The ceramic core and flameproof silicone coating (UL 94 V-0 equivalent) ensure the resistor maintains performance across demanding temperature and operational ranges typical of outdoor and edge-computing security deployments.
Key Features
- 1.0W Power Rating: Handles moderate power dissipation in surveillance power distribution circuits without thermal runaway — critical when deploying PoE infrastructure across dozens of endpoints where cumulative load must stay within supply margins.
- Glass Epoxy Substrate (CW1S Class): The printed circuit board material resists moisture ingress and thermal cycling, which extends component life in uncontrolled outdoor cabinet environments from -40°C to +155°C rated ambient range.
- Precision Coat-Insulated Design: Silicone coating rated UL 94 V-0 flameproof provides galvanic isolation and reduces crosstalk in high-frequency switching supplies common in PoE injectors and managed switches.
- ±250 ppm/°C Temperature Coefficient (CB1S00769): Drift is predictable and minimal across the full -40°C to +155°C operating window, so resistor tolerance remains stable whether the device sits in a cooled NOC or an unheated outdoor junction box.
- Resistance Range 0.1–100Ω (E-24, E-96 Series): Standard decade values simplify BOM management and procurement — you're not hunting for exotic values when field repairs or upgrades are needed on installed surveillance backbone.
- PoE Rated Material Designation: The CB1S construction and epoxy formulation meet power-over-Ethernet environmental and reliability standards, meaning it can sit downstream of PoE injectors without premature failure from electrical transients or thermal stress cycles.
Integration & Compatibility
The CB1S00769 integrates into PoE power conditioning, voltage regulation, and protection circuits commonly found in surveillance system backbone infrastructure — managed PoE switches, inline injectors, and uninterruptible power supplies feeding camera arrays. Its precision tolerance and thermal stability make it suitable for analog sensing circuits in network-attached environmental monitors (temperature, humidity sensors in camera housings) that feed data into VMS platforms via ONVIF-compliant endpoint metadata.
The glass epoxy board and coat-insulation mean the assembly can be soldered or wave-soldered into high-density PCBs without special handling — suitable for automatic machine insertion and board-level manufacturing processes in ODM facilities.
Environmental & Durability
Rated -40°C to +155°C operating temperature with excellent long-term stability in humid and thermally cyclic conditions. The flameproof silicone coating and ceramic core resist UV degradation and salt spray, extending serviceable life in rooftop, coastal, and industrial surveillance environments. Power derating curves are provided in the datasheet to account for elevated ambient temperatures — a real consideration when outdoor enclosures hit 60°C+ under direct sunlight.
What's in the Box
The CB1S00769 is shipped as a component assembly. Specific package configuration (tape and reel, ammo pack, or embossed tape) depends on order volume and can be specified at purchase — confirm with your supplier for your exact unit quantity and logistics requirement.
Frequently Asked Questions
Q: What's the tolerance class of the CB1S00769?
A: The CB1S series supports E-24 and E-96 tolerance grades. Standard options include ±0.25% (C), ±0.5% (D), ±1% (F), ±2% (G), and ±5% (J) — confirm your specific tolerance code when ordering, as tighter tolerances may incur lead time or MOQ penalties.
Q: Can the CB1S00769 handle sustained power dissipation at elevated ambient temperatures?
A: Yes, but with derating. At 70°C ambient, the 1W rating derate to approximately 80% of rated power (0.8W); at 155°C, derating approaches 40–50%. The datasheet provides detailed derating curves — consult them when sizing resistors for enclosures without active cooling.
Q: Is the CB1S00769 RoHS compliant?
A: Products with lead-free terminations in the CW series meet EU RoHS and China RoHS requirements. Confirm your specific termination style (lead type, forming, and packaging) with the manufacturer, as RoHS status depends on termination specification.
Q: What packing and forming options are available for the CB1S00769?
A: Standard options include axial lead configurations (T26, T52, T521, T631 taping and forming) and tape-and-reel or ammo pack packaging. Radial configurations are available for other CW variants. Confirm forming and packaging codes (e.g., T52A) with your order to ensure compatibility with your PCB layout and assembly equipment.
Q: Does the CB1S00769 meet MIL specifications?
A: The CWH variant (high-precision wirewound) meets MIL-PRF-26 with T.C.R. <±20×10⁻⁶/K. The CB1S00769 itself does not carry an explicit MIL designation, but its ceramic core and coat-insulation meet industrial environmental requirements. For MIL-grade specifications, specify CWH (high-precision) or contact the manufacturer for application-specific qualification.
Q: What's the maximum lead length on the CB1S00769?
A: Lead length is 1.18 ± 0.118 inches (30.0 ± 3.0 mm) and varies depending on taping and forming type. For radial or custom lead configurations, consult the ordering guide or contact KOA Speer Electronics directly.
The Code Blue CB1S00769 is a precision-grade 1W wirewound resistor built for PoE infrastructure circuits where thermal stability and long-term component reliability directly impact surveillance system uptime. Unlike cheaper film or thin-film resistors that drift under thermal cycling, the CB1S00769's ±250 ppm/°C temperature coefficient and ceramic core keep resistance tolerances predictable from -40°C to +155°C — the full range you encounter across data center to rooftop deployments.
Technical Highlights:
- 1.0W ceramic core with precision coat-insulation: The flameproof silicone coating (UL 94 V-0) and glass epoxy substrate eliminate galvanic crosstalk in high-density PoE power supply circuits. This matters when you're conditioning multiple camera power rails on a single switch backbone — isolation prevents voltage transients on one port from bleeding into adjacent camera feeds.
- ±250 ppm/°C T.C.R. across -40°C to +155°C: A rooftop enclosure that hits 70°C in summer won't see the resistor drift 2–3% the way cheaper alternatives would. This stability is baked into the ceramic core construction, so sensing circuits for environmental monitors stay calibrated season to season.
- E-24 and E-96 tolerance series (C, D, F, G, J grades): You specify tolerance at purchase — no surprises mid-deployment. Tight tolerances (±0.25% to ±0.5%) support precision current-limiting and voltage-divider circuits in analog sensor conditioning; loose grades (±5%) reduce BOM cost when absolute accuracy isn't critical.
Deployment Considerations:
- Power derating is real. At 155°C enclosure ambient (rare but possible in sealed outdoor cabinets), the 1W rating cuts to 40–50% — size your supply margin accordingly or rely on active cooling in high-density deployments.
- Lead length is fixed at 1.18 ± 0.118 inches; confirm your PCB layout can accommodate this before committing to a large production run. Custom lead forming is available but typically incurs tooling and lead time.
Deploy the CB1S00769 in PoE voltage regulation, current-limiting, and protection circuits where component drift over time directly threatens camera uptime or data integrity. Indoor NOCs with climate control will see decades of service from this part; outdoor rooftop enclosures need thermal monitoring and derating calculations to stay within safe operating margins.
