CSR1206JK30L0 Equivalent & Substitute Parts

Part Overview

The CSR1206JK30L0 is a 30 mOhms ±5% thick film chip resistor in 1206 (3216 Metric) package rated for 0.5W power dissipation. Manufactured by Stackpole Electronics Inc, this current sense resistor is designed for precision current measurement applications in electronic circuits. The part is active and in production with ROHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are necessary when the original part becomes unavailable, when tighter tolerance specifications are required, or when alternative manufacturers' components are preferred for supply chain diversification and cost optimization.

Substiute Parts

CSR1206JK30L0

Stackpole Electronics IncIn Stock: 1078CSR1206JK30L0 Datasheet

Current PartRFQ

CSR1206FK30L0

Stackpole Electronics IncIn Stock: 1598CSR1206FK30L0 Datasheet

UpgradeRFQ

CSR1206FT30L0

Stackpole Electronics IncIn Stock: 11021CSR1206FT30L0 Datasheet

UpgradeRFQ

RLP73M2BR030FTDF

TE Connectivity Passive ProductIn Stock: 2507RLP73M2BR030FTDF Datasheet

MFR RecommendedRFQ

RLP73M2BR030JTD

TE Connectivity Passive ProductIn Stock: 12959RLP73M2BR030JTD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CSR1206JK30L0 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Resistance value: 30 mOhms (exact match required)
• Package / Case: 1206 (3216 Metric) (exact match required)
• Power rating: 0.5W minimum
• Composition: Thick Film
• Features: Current Sense capability
• Operating temperature range: -55°C to 155°C minimum
• RoHS3 compliance

Secondary Compatibility Criteria:

• Tolerance: ±5% or tighter (±1% acceptable as upgrade)
• Temperature coefficient: ±100ppm/°C or ±400ppm/°C (both acceptable)
• Moisture sensitivity: MSL 1 (Unlimited)

Substitute parts are grouped into two categories: direct equivalents with identical tolerance specifications, and upgraded alternatives with improved tolerance performance.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Same Tolerance): RLP73M2BR030JTD is a direct functional equivalent to CSR1206JK30L0, maintaining the ±5% tolerance specification. Both parts are ROHS3 compliant with MSL 1 rating. The TE Connectivity part offers higher inventory availability (12,898 pcs) compared to the original Stackpole part (996 pcs). Dimensional variation of 0.002" in length (3.10mm vs 3.05mm) is within standard PCB layout tolerances for 1206 packages.

Upgraded Alternatives (Tighter Tolerance): CSR1206FK30L0, CSR1206FT30L0, and RLP73M2BR030FTDF all provide ±1% tolerance, representing improved accuracy for current sense applications. CSR1206FT30L0 offers the highest inventory level (10,926 pcs) among Stackpole options. All three upgraded parts maintain identical power rating, package, and operating temperature specifications. The TE Connectivity RLP73M2BR030FTDF introduces a higher temperature coefficient (±400ppm/°C vs ±100ppm/°C), which may impact precision in temperature-sensitive applications.

Supply Chain Considerations: All substitute parts maintain active production status and ROHS3 compliance. Selection should prioritize tolerance requirements, temperature coefficient performance, and inventory availability based on application-specific demands.

Frequently Asked Questions (FAQ)

Q: Can CSR1206FK30L0 or CSR1206FT30L0 be used as direct replacements for CSR1206JK30L0?

A: Yes. Both parts are direct pin-compatible substitutes with identical package dimensions (within tolerance), power rating, and operating temperature range. The ±1% tolerance of these parts is tighter than the ±5% specification of the original part, making them suitable for applications requiring improved accuracy. No circuit redesign is necessary.

Q: What is the difference between the Stackpole CSR series and TE Connectivity RLP73M2 series?

A: Both series are 1206 thick film current sense resistors with identical resistance, power rating, and package specifications. The primary difference is the temperature coefficient: Stackpole CSR parts specify ±100ppm/°C, while TE Connectivity RLP73M2 parts specify ±400ppm/°C. For applications with strict temperature stability requirements, Stackpole parts are preferred. For general-purpose current sensing, both are functionally equivalent.

Q: Are there dimensional differences between substitute parts?

A: Stackpole CSR1206 parts measure 0.120" L x 0.061" W (3.05mm x 1.55mm), while TE Connectivity RLP73M2 parts measure 0.122" L x 0.061" W (3.10mm x 1.55mm). The 0.002" length difference is within standard 1206 package tolerances and does not affect PCB layout compatibility. Height specifications are identical at 0.026" (0.65mm) maximum.

Q: Which substitute part should be selected for cost optimization?

A: RLP73M2BR030JTD (TE Connectivity) provides the best availability at 12,898 pcs with matching ±5% tolerance specification. CSR1206FT30L0 (Stackpole) offers the highest inventory among upgraded ±1% tolerance options at 10,926 pcs. Selection depends on whether tolerance upgrade is required for the application.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts—CSR1206FK30L0, CSR1206FT30L0, RLP73M2BR030FTDF, and RLP73M2BR030JTD—are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original CSR1206JK30L0 specifications.