Vitronics Soltec Delta Tin Cylinder Heating Rods 206633 212158 206633

Original factory complete parameters (precise matching)

1. 206633 (Main heating element, most commonly used)
Official name: Heating Element / Calrod Heater, 206633
Voltage: 230V AC (single phase)
Power: 1100W (1.1kW)
Dimensions: Φ12.7mm (1/2″) × Length 457mm (18″) (Effective heating section 430mm, cold end 27mm)
Material: 316L stainless steel sheath, high-purity MgO insulation, heating wire NiCr80/20, 500℃ heat-resistant fiberglass wire for leads
Output: Single-ended 2-wire (live wire + neutral wire), approximately 300mm long, with high-temperature insulation/terminals
Installation: Φ12.7mm tight-fitting hole at the bottom/side wall of the solder bath, press-fit type, no threads, fixing clip/clamp
Resistance (room temperature 25℃): Approximately 48Ω (47–49Ω), failure occurs upon open circuit/short circuit
Compatible with: Delta 3, Delta 5, Delta X, 6622 CC wave soldering baths

2. 212158 (Auxiliary/Spare Heating Rod)
Voltage: 230V AC
Power: 1000W (1.0kW) (Slightly lower than 206633, used for temperature compensation/zone control)
Dimensions: Φ12.7mm × Length 450mm (17.7″), compatible with 206633 Mounting holes fully compatible

Material/Structure: Same as 206633 (316L, MgO, NiCr)

Resistance (room temperature): Approx. 53Ω (52–54Ω)

Applications: Delta solder bath zone heating, spare replacement, upgrade of older models

Installation, Wiring, and Replacement Points

1. Installation Specifications

Hole Position: Solder bath heating holes must be Φ12.7mm (+0.02~+0.05mm). Too loose, and heat transfer will be poor; overheating will cause burnout. Too tight, and it cannot be pressed in.

Depth: Press the entire wire in completely, with the cold end (leading end) protruding 5–10mm. Exposed heating section is strictly prohibited.

Fixing: Use original clamps/clamps to lock in place, ensuring a tight fit with the aluminum/cast iron wall of the solder bath to reduce thermal resistance.

Sealing: Seal the leading end with high-temperature sealant/ceramic to prevent solder slag, flux, and moisture intrusion.

2. Wiring and Testing (Required)

Wiring: 2 Wire connection (L/N), grounding is strictly prohibited; the solder bath casing must be reliably grounded to prevent leakage.

Resistance testing (power off test):

206633: 47–49Ω (normal); <45Ω or >55Ω → aging/damage

212158: 52–54Ω (normal); <50Ω or >56Ω → replacement

Insulation to ground: ≥20MΩ (500V megohmmeter), otherwise leakage is a danger.

Quantity: Delta 5/X solder baths typically use 4–6 206633 units in parallel, with a total power of 4.4–6.6kW.

3. Lifespan and maintenance

Lifespan: 6–12 months under normal lead-free conditions; solder dross accumulation, temperatures exceeding 300℃, and loose installation will shorten it to 3–6 months.

Troubleshooting: Insufficient temperature rise, large temperature difference → single unit/ Multiple heating rods open circuit
Frequent tripping, leakage → insulation breakdown, sheath damage
Local overheating, solder bath deformation → loose heating rods, poor heat transfer
Replacement: Replace the entire unit in the same batch (to avoid uneven power between old and new, localized overheating), and clean the accumulated residue in the solder bath heating holes simultaneously.

Procurement
1. Original Manufacturer (ITW EAE / Flextronics)
Part Number: 206633, 212158
Channel: ITW EAE

Selection Points: Choose high-density MgO, thickened 316L sheath, 500℃ resistant leads to ensure lifespan and heat transfer.

Quickly check the list (to avoid buying the wrong one)
Equipment Model: Delta 3/5/X, 6622 CC
Confirm whether it is 206633 (1100W/457mm) or 212158 (1000W/450mm)
Voltage: 230V, single-ended 2-wire, Φ12.7mm Diameter, tight fit, no threads. Room temperature resistance: 206633 ≈ 48Ω; 212158 ≈ 53Ω