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TC03X-2-103E Equivalent & Substitute Parts
Part Overview
The TC03X-2-103E is a 10 kOhms surface mount trimmer potentiometer manufactured by Bourns Inc., part of the Trimpot® TC03 series. This component features a 0.1W power rating, cermet resistive material, J lead termination, and top adjustment capability with a single turn. The TC03X-2-103E is classified as obsolete, making identification of suitable substitute components necessary for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 10 kOhms |
| Power Rating | 0.1W (1/10W) |
| Tolerance | ±25% |
| Temperature Coefficient | ±250ppm/°C |
| Number of Turns | 1 |
| Adjustment Type | Top Adjustment |
| Resistive Material | Cermet |
| Mounting Type | Surface Mount |
| Termination Style | J Lead |
| Size | Rectangular - 0.140" x 0.118" Face (4.65mm x 3.00mm) |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the TC03X-2-103E is based on electrical and mechanical parameter compatibility. The primary substitute identified is the TC33X-2-103E, which maintains equivalence across the following critical parameters:
- Resistance value: 10 kOhms (identical)
- Tolerance: ±25% (identical)
- Temperature coefficient: ±250ppm/°C (identical)
- Number of turns: 1 (identical)
- Adjustment type: Top Adjustment (identical)
- Resistive material: Cermet (identical)
- Mounting type: Surface Mount (identical)
- Termination style: J Lead (identical)
- RoHS and REACH compliance: ROHS3 Compliant, REACH Unaffected (identical)
The TC33X-2-103E differs in power rating (0.15W versus 0.1W) and physical dimensions (0.150" x 0.142" versus 0.140" x 0.118"), representing a higher power capability and slightly larger footprint within the same product family.
Parameter Comparison
| Parameter | TC03X-2-103E (Main Part) | TC33X-2-103E (Substitute) |
|---|---|---|
| Manufacturer | Bourns Inc. | Bourns Inc. |
| Series | Trimpot® TC03 - Open Frame | Trimpot® TC33 - Open Frame |
| Product Status | Obsolete | Active |
| Resistance | 10 kOhms | 10 kOhms |
| Power Rating | 0.1W | 0.15W |
| Tolerance | ±25% | ±25% |
| Temperature Coefficient | ±250ppm/°C | ±250ppm/°C |
| Number of Turns | 1 | 1 |
| Adjustment Type | Top Adjustment | Top Adjustment |
| Resistive Material | Cermet | Cermet |
| Mounting Type | Surface Mount | Surface Mount |
| Termination Style | J Lead | J Lead |
| Size | 0.140" x 0.118" (4.65mm x 3.00mm) | 0.150" x 0.142" (3.80mm x 3.60mm) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) |
| Inventory Status | 923 Pcs In Stock | 35400 Pcs In Stock |
Engineering Selection Recommendations
The TC33X-2-103E serves as the active production substitute for the obsolete TC03X-2-103E. Both components maintain identical electrical specifications across resistance, tolerance, temperature coefficient, and adjustment characteristics. The TC33X-2-103E provides enhanced power handling capability at 0.15W compared to the 0.1W rating of the TC03X-2-103E, making it suitable for applications requiring equal or greater power dissipation margins.
Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current manufacturing standards. The TC33X-2-103E is currently in active production with significantly higher inventory availability, supporting long-term supply chain continuity.
Physical dimension differences between the two parts require PCB layout verification. The TC33X-2-103E footprint is slightly larger (0.150" x 0.142" versus 0.140" x 0.118"), necessitating confirmation that the substitute component fits within existing board space constraints.
Frequently Asked Questions (FAQ)
Q: Can the TC33X-2-103E directly replace the TC03X-2-103E in existing designs?
A: Electrical substitution is valid based on identical resistance, tolerance, temperature coefficient, and adjustment specifications. Physical substitution requires PCB layout verification due to the larger footprint of the TC33X-2-103E (0.150" x 0.142" versus 0.140" x 0.118").
Q: What is the significance of the power rating difference between 0.1W and 0.15W?
A: The TC33X-2-103E provides 50% greater power dissipation capability. This represents a design margin enhancement and does not restrict use in applications originally specified for 0.1W operation.
Q: Are both parts compliant with current regulatory requirements?
A: Yes. Both the TC03X-2-103E and TC33X-2-103E are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.
Q: Why is the TC03X-2-103E classified as obsolete?
A: The TC03X-2-103E has been superseded by the TC33X-2-103E within the Bourns Trimpot® product line. The TC33X series represents the current active production offering for this resistance and power rating combination.
Q: What packaging options are available for the TC33X-2-103E?
A: The TC33X-2-103E is available in Cut Tape (CT) and Digi-Reel® packaging formats, supporting both manual and automated assembly processes.
Q: Are there any differences in adjustment characteristics between the two parts?
A: No. Both components feature identical single-turn top adjustment capability with cermet resistive material and ±25% tolerance specifications.
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