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Grayhill 78RB06 DIP Switch Equivalent & Substitute Parts
Part Overview
The Grayhill 78RB06 is a slide-actuated DIP switch featuring SPST (Single Pole Single Throw) circuit configuration with 6 positions. This component is rated for 150mA at 30VDC and is designed for through-hole mounting on printed circuit boards. The 78RB06 is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support, maintenance, and production continuity. Substitute parts must maintain electrical and mechanical compatibility while meeting current compliance requirements.
Substiute Parts
Key Parameters
| Parameter | Value | Significance for Substitution |
|---|---|---|
| Circuit Configuration | SPST | Defines switching functionality; must remain constant |
| Number of Positions | 6 | Determines switch count and board footprint; must match |
| Current Rating | 150mA | Maximum load capacity; substitute must equal or exceed |
| Voltage Rating | 30VDC | Maximum operating voltage; substitute must equal or exceed |
| Actuator Type | Slide (Standard) | User interface and mechanical engagement; must match |
| Mounting Type | Through Hole | PCB assembly method; must match for compatibility |
| Pitch | 0.100" (2.54mm) | Pin spacing; must match for board layout compatibility |
| Height Above Board | 0.265" (6.73mm) | Clearance requirement; must match or be lower |
| Termination Style | PC Pin | Solder connection type; must match |
| Operating Temperature Range | -40°C to 85°C | Environmental operating limits; substitute must equal or exceed |
Substitute Part Grouping Explanation
Substitute parts for the Grayhill 78RB06 are identified based on strict electrical and mechanical parameter matching. The substitution logic is based on the following criteria:
Electrical Parameters (Must Match):
- Circuit type: SPST
- Number of positions: 6
- Current rating: 150mA minimum
- Voltage rating: 30VDC minimum
Mechanical Parameters (Must Match):
- Actuator type: Slide (Standard)
- Mounting type: Through Hole
- Pitch: 0.100" (2.54mm)
- Termination style: PC Pin
- Height above board: 0.265" (6.73mm) or lower
Environmental Parameters (Must Match or Exceed):
- Operating temperature range: -40°C to 85°C minimum
The 78RB06T is classified as a direct substitute because it maintains identical electrical specifications, mechanical dimensions, and environmental ratings while offering improved product status and compliance characteristics.
Parameter Comparison
| Parameter | 78RB06 (Main Part) | 78RB06T (Substitute) | Match Status |
|---|---|---|---|
| Manufacturer | Grayhill Inc. | Grayhill Inc. | Identical |
| Circuit Configuration | SPST | SPST | Identical |
| Number of Positions | 6 | 6 | Identical |
| Current Rating (Amps) | 150mA | 150mA | Identical |
| Voltage Rating | 30VDC | 30VDC | Identical |
| Actuator Type | Slide (Standard) | Slide (Standard) | Identical |
| Actuator Level | Flush, Recessed | Flush, Recessed | Identical |
| Contact Material | Copper Alloy | Copper Alloy | Identical |
| Contact Finish | Gold | Gold | Identical |
| Height Above Board | 0.265" (6.73mm) | 0.265" (6.73mm) | Identical |
| Mounting Type | Through Hole | Through Hole | Identical |
| Termination Style | PC Pin | PC Pin | Identical |
| Pitch | 0.100" (2.54mm), Full | 0.100" (2.54mm), Full | Identical |
| Operating Temperature | -40°C to 85°C | -40°C to 85°C | Identical |
| Body Material | Thermoplastic | Thermoplastic | Identical |
| Length | 0.680" (17.27mm) | 0.680" (17.27mm) | Identical |
| Mechanical Life | 2,000 Cycles | 2,000 Cycles | Identical |
| Electrical Life | 2,000 Cycles | 2,000 Cycles | Identical |
| Product Status | Obsolete | Active | Substitute is Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | Substitute is Compliant |
| Packaging | Bulk | Tube | Different |
Engineering Selection Recommendations
The 78RB06T is the recommended substitute for the obsolete 78RB06 based on the following engineering criteria:
Product Status Alignment: The 78RB06 is classified as obsolete, creating supply chain risk and limiting long-term availability. The 78RB06T maintains active product status with Grayhill Inc., ensuring continued manufacturing support and component availability.
Compliance Improvement: The 78RB06T achieves ROHS3 compliance, whereas the original 78RB06 is RoHS non-compliant. This compliance upgrade is significant for applications subject to environmental regulations and industry standards requiring RoHS adherence.
Functional Equivalence: All electrical and mechanical parameters are identical between the two parts. The 78RB06T provides drop-in compatibility for PCB designs originally specified with the 78RB06, with no circuit modifications or layout adjustments required.
Certification Consistency: Both parts maintain identical REACH status (REACH Unaffected) and ECCN classification (EAR99), ensuring regulatory consistency in supply chain documentation.
Packaging Consideration: The 78RB06T is supplied in tube packaging, whereas the 78RB06 was supplied in bulk. This packaging difference does not affect electrical or mechanical performance but may influence procurement and assembly processes.
Frequently Asked Questions (FAQ)
Q: Can the 78RB06T be used as a direct replacement for the 78RB06 without PCB modifications?
A: Yes. The 78RB06T is electrically and mechanically identical to the 78RB06. All critical parameters including pitch, height, mounting type, and electrical ratings match exactly. No PCB layout changes are required.
Q: What is the primary reason to transition from 78RB06 to 78RB06T?
A: The 78RB06 is obsolete, creating supply continuity risk. The 78RB06T is an active product from the same manufacturer with identical specifications, ensuring long-term availability and manufacturing support.
Q: Does the 78RB06T meet RoHS requirements?
A: Yes. The 78RB06T is ROHS3 compliant. The original 78RB06 is RoHS non-compliant. This compliance upgrade may be required for applications subject to environmental regulations.
Q: Are there any electrical performance differences between the 78RB06 and 78RB06T?
A: No. Both parts have identical current ratings (150mA), voltage ratings (30VDC), mechanical life (2,000 cycles), and electrical life (2,000 cycles). Performance is equivalent.
Q: What is the difference in packaging between these parts?
A: The 78RB06 was supplied in bulk packaging, while the 78RB06T is supplied in tube packaging. This affects handling and assembly processes but does not impact component performance or compatibility.
Q: Are both parts suitable for the same operating temperature range?
A: Yes. Both the 78RB06 and 78RB06T operate across the identical temperature range of -40°C to 85°C.
Q: Is the 78RB06T available in the same pitch configuration?
A: Yes. Both parts feature 0.100" (2.54mm) pitch with full spacing, ensuring identical PCB footprint compatibility.
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