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ERJ-S1DF91R0U Equivalent & Substitute Parts
Part Overview
The ERJ-S1DF91R0U is a 91 Ohm ±1% thick film chip resistor manufactured by Panasonic Electronic Components in the 2010 (5025 Metric) package format. This component is rated for 0.75W power dissipation and features anti-sulfur properties with AEC-Q200 automotive qualification. The part is currently in active production status. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component, enabling direct replacement in applications where component availability or supply chain considerations necessitate alternative sourcing.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 91 Ohms |
| Tolerance | ±1% |
| Power Rating | 0.75W (3/4W) |
| Package / Case | 2010 (5025 Metric) |
| Composition | Thick Film |
| Temperature Coefficient | ±100ppm/°C |
| Operating Temperature Range | -55°C ~ 155°C |
| Automotive Rating | AEC-Q200 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
| Packaging Type | Tape & Reel (TR) |
Substitute Part Grouping Explanation
Substitute parts for the ERJ-S1DF91R0U are qualified based on the following criteria:
Electrical Parameters: Resistance value (91 Ohms), tolerance (±1%), power rating (0.75W), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C) must be identical.
Mechanical Parameters: Package designation (2010 / 5025 Metric), composition (thick film), and number of terminations (2) must match.
Compliance & Certifications: RoHS3 compliance, MSL rating (1), and AEC-Q200 automotive qualification are required for substitution eligibility.
Packaging Format: Tape & Reel (TR) packaging must be maintained for supply chain compatibility.
The identified substitute parts meet all these criteria and are therefore direct functional equivalents suitable for component replacement.
Parameter Comparison
| Parameter | ERJ-S1DF91R0U (Panasonic) | AC2010FK-0791RL (YAGEO) | RC2010FK-0791RL (YAGEO) |
|---|---|---|---|
| Resistance | 91 Ohms | 91 Ohms | 91 Ohms |
| Tolerance | ±1% | ±1% | ±1% |
| Power Rating | 0.75W | 0.75W | 0.75W |
| Package / Case | 2010 (5025 Metric) | 2010 (5025 Metric) | 2010 (5025 Metric) |
| Composition | Thick Film | Thick Film | Thick Film |
| Temperature Coefficient | ±100ppm/°C | ±100ppm/°C | ±100ppm/°C |
| Operating Temperature | -55°C ~ 155°C | -55°C ~ 155°C | -55°C ~ 155°C |
| Automotive Rating | AEC-Q200 | AEC-Q200 | Not specified |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Height - Seated (Max) | 0.028" (0.70mm) | 0.026" (0.65mm) | 0.026" (0.65mm) |
| Packaging Type | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) |
Engineering Selection Recommendations
Both YAGEO substitute parts (AC2010FK-0791RL and RC2010FK-0791RL) satisfy the core electrical and mechanical requirements for direct replacement of the ERJ-S1DF91R0U.
AC2010FK-0791RL: This part carries explicit AEC-Q200 automotive qualification matching the original component. It is suitable for applications requiring automotive-grade reliability and compliance documentation.
RC2010FK-0791RL: This part meets all electrical and mechanical specifications and RoHS3 compliance. The AEC-Q200 rating is not specified for this variant. Selection should be based on application requirements regarding automotive qualification necessity.
Both parts feature seated heights of 0.026" (0.65mm), which is 0.002" lower than the original ERJ-S1DF91R0U at 0.028" (0.70mm). This dimensional difference is within typical PCB layout tolerances for 2010 package components and does not affect electrical performance or mechanical fit in standard applications.
Frequently Asked Questions (FAQ)
Q: Can AC2010FK-0791RL and RC2010FK-0791RL be used interchangeably with ERJ-S1DF91R0U?
A: Both parts meet the electrical specifications (91 Ohms ±1%, 0.75W, ±100ppm/°C, -55°C ~ 155°C) and mechanical requirements (2010 package, thick film composition, MSL 1). AC2010FK-0791RL includes AEC-Q200 certification. Selection depends on whether automotive qualification is required for your application.
Q: What is the significance of the height difference between the original and substitute parts?
A: The ERJ-S1DF91R0U has a maximum seated height of 0.028" (0.70mm), while both YAGEO substitutes measure 0.026" (0.65mm). This 0.002" difference is within standard PCB design tolerances for 2010 package resistors and does not impact electrical performance or mechanical assembly.
Q: Are all three parts RoHS3 compliant?
A: Yes. The ERJ-S1DF91R0U, AC2010FK-0791RL, and RC2010FK-0791RL are all ROHS3 compliant with MSL rating 1 (unlimited moisture sensitivity level).
Q: Which substitute part should I select for automotive applications?
A: AC2010FK-0791RL carries explicit AEC-Q200 automotive qualification. If your application requires documented automotive-grade components, AC2010FK-0791RL is the appropriate selection.
Q: Are the substitute parts available in Tape & Reel packaging?
A: Yes. Both AC2010FK-0791RL and RC2010FK-0791RL are supplied in Tape & Reel (TR) format, matching the original component packaging specification.
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