TE Connectivity Potter & Brumfield Relay 1-1904022-1 Equivalent & Substitute Parts

Part Overview

The TE Connectivity Potter & Brumfield Relay 1-1904022-1 is a general purpose SPDT (Single Pole Double Throw) relay with a 12VDC coil, rated for 30A contact current, and designed for chassis mount applications. This relay features a non-latching coil type with quick connect termination and silver alloy contacts suitable for industrial switching applications.

The 1-1904022-1 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain system functionality, ensure supply chain continuity, and support ongoing maintenance and production requirements for applications utilizing this relay.

Substiute Parts

1-1904022-1

TE Connectivity Potter & Brumfield RelaysIn Stock: 43461-1904022-1 Datasheet

Current PartRFQ

6-1393302-0

TE Connectivity AMP ConnectorsIn Stock: 8926-1393302-0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1-1904022-1 with the TE Connectivity AMP Connectors part 6-1393302-0 is based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters:

• Coil voltage: Both operate at 12VDC
• Contact form: Both are SPDT (1 Form C) configuration
• Coil type: Both are non-latching
• Mounting type: Both are chassis mount
• Contact material: Both use silver alloy
• Operate and release times: Both 7 ms and 2 ms respectively
• Operating temperature range: Both support -40°C minimum; substitute extends to 125°C
• RoHS compliance: Both meet environmental standards
• Moisture sensitivity level: Both rated MSL 1 (Unlimited)

Allowable Variations:

• Contact rating: Substitute rated for 40A versus original 30A (higher capacity acceptable for same application)
• Coil current: Substitute 133.3 mA versus original 141.2 mA (within acceptable operating margin)
• Coil resistance: Substitute 90 Ohms versus original 85 Ohms (acceptable variance)
• Must operate voltage: Substitute 7.2 VDC versus original 8 VDC (lower threshold acceptable)
• Termination style: Substitute uses Plug In, Quick Connect - 0.110" (2.8mm) versus original Quick Connect - 0.187"/0.250" (requires mechanical verification for board compatibility)

The 6-1393302-0 substitute part maintains functional equivalence while offering active product status and extended temperature capability.

Parameter Comparison

Engineering Selection Recommendations

The 6-1393302-0 substitute part is suitable for applications currently using the 1-1904022-1 based on the following engineering criteria:

Product Status Advantage: The substitute part 6-1393302-0 carries active product status, ensuring ongoing availability, manufacturing support, and supply chain reliability. The original 1-1904022-1 is obsolete, presenting long-term sourcing risk.

Electrical Compatibility: Both relays operate at 12VDC with identical SPDT contact configuration and matching switching response times (7 ms operate, 2 ms release). The substitute's 40A contact rating exceeds the original 30A specification, providing additional capacity margin for the same application envelope.

Environmental Compliance: Both parts meet RoHS standards and carry EAR99 export classification. The substitute extends the operating temperature range to 125°C, providing enhanced thermal margin for applications in elevated ambient conditions.

Mechanical Considerations: The termination style differs between parts. The original uses 0.187"/0.250" quick connect terminals, while the substitute uses 0.110" (2.8mm) quick connect terminals. Physical board layout and connector compatibility must be verified before implementation.

Coil Performance: The substitute exhibits slightly lower coil current (133.3 mA versus 141.2 mA) and marginally higher coil resistance (90 Ohms versus 85 Ohms), both within acceptable operating margins for 12VDC relay applications.

Frequently Asked Questions (FAQ)

Q: Can the 6-1393302-0 directly replace the 1-1904022-1 without circuit modifications?

A: Electrical substitution is valid. Both relays operate at 12VDC with identical SPDT contact configuration and switching times. However, the termination connector size differs (0.110" versus 0.187"/0.250"), requiring mechanical verification of board-level compatibility before installation.

Q: What is the significance of the higher 40A contact rating on the substitute part?

A: The substitute's 40A rating exceeds the original 30A specification. This provides additional current-carrying capacity for the same switching application. The higher rating does not create incompatibility; it represents an enhanced capability margin.

Q: Are there temperature-related limitations when substituting?

A: The original part operates to 105°C maximum; the substitute extends to 125°C. This represents an improvement for high-temperature applications. No thermal derating is required for applications within the original 105°C limit.

Q: How do the coil resistance differences affect circuit design?

A: The substitute coil resistance is 90 Ohms versus the original 85 Ohms, a 5.9% increase. At 12VDC, this results in approximately 8 mA lower coil current (133.3 mA versus 141.2 mA). This variance is within normal operating tolerance for 12VDC relay driver circuits and does not require circuit redesign.

Q: What is the impact of the different termination styles?

A: The original uses 0.187"/0.250" quick connect terminals; the substitute uses 0.110" (2.8mm) terminals. These are mechanically incompatible. Connector compatibility with existing PCB or harness designs must be confirmed. Adapter solutions or board redesign may be necessary.

Q: Is the substitute part suitable for applications requiring the full -40°C to 105°C range?

A: Yes. The substitute supports -40°C to 125°C operation, fully encompassing the original temperature range. No performance degradation occurs within the original specification limits.

Q: What is the difference between ROHS3 and RoHS compliance status?

A: Both parts meet RoHS environmental standards. ROHS3 represents a specific revision level of the RoHS directive. Both certifications are acceptable for equivalent substitution in RoHS-regulated applications.

Q: Are there any supply chain advantages to using the substitute part?

A: The substitute part 6-1393302-0 carries active product status with 853 units in stock, compared to the obsolete 1-1904022-1. Active status ensures continued manufacturing support and long-term availability for future production and maintenance requirements.