T90S5D12-5 Equivalent & Substitute Parts

Part Overview

The T90S5D12-5 is a general purpose relay manufactured by TE Connectivity Potter & Brumfield Relays. This through-hole mounted SPDT (1 Form C) relay operates on a 5VDC coil and is rated for 20A contact current with a maximum switching voltage of 240VAC and 28VDC. The T90S5D12-5 is classified as obsolete product status. Due to its obsolete classification, locating equivalent substitute parts with identical or compatible electrical and mechanical specifications is necessary for ongoing design support, maintenance, and production continuity.

Substiute Parts

T90S5D12-5

TE Connectivity Potter & Brumfield RelaysIn Stock: 1132T90S5D12-5 Datasheet

Current PartRFQ

T9AS5D12-5

TE Connectivity Potter & Brumfield RelaysIn Stock: 6978T9AS5D12-5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The T9AS5D12-5 qualifies as a direct substitute for the T90S5D12-5 based on the following critical parameters:

Matching Electrical Specifications:

• Coil voltage: 5VDC
• Contact form: SPDT (1 Form C)
• Contact rating: 20 A
• Coil type: Non Latching
• Operating temperature range: -55°C ~ 85°C
• Must operate voltage: 3.75 VDC
• Must release voltage: 0.5 VDC
• Operate time: 15 ms
• Release time: 15 ms

Matching Mechanical Specifications:

• Mounting type: Through Hole
• Termination style: PC Pin
• Seal rating: Sealed - Fully
• Contact material: Silver Cadmium Oxide (AgCdO)
• Coil insulation: Class F

Compatibility Notes: The T9AS5D12-5 operates at a maximum switching voltage of 277VAC, which exceeds the T90S5D12-5 specification of 240VAC, providing enhanced voltage capability. The coil current of the substitute is 200 mA compared to 185 mA in the original part, and coil resistance is 25 Ohms versus 27 Ohms. These minor variations remain within acceptable tolerance for general purpose relay applications.

Parameter Comparison

Engineering Selection Recommendations

The T9AS5D12-5 is the appropriate substitute for the obsolete T90S5D12-5 based on the following factors:

Product Status: The T9AS5D12-5 maintains active product status with TE Connectivity Potter & Brumfield Relays, ensuring ongoing availability and supply chain continuity. The original T90S5D12-5 is classified as obsolete, making the T9A series the current equivalent offering.

Compliance and Certifications: The T9AS5D12-5 is ROHS3 compliant and REACH affected, meeting current regulatory requirements for electronic components. These certifications support long-term design compliance and market acceptance.

Electrical Compatibility: All critical electrical parameters match between the two parts, including coil voltage, contact form, contact rating, operating temperature range, and switching characteristics. The substitute provides enhanced maximum switching voltage capability (277VAC versus 240VAC), which represents an improvement over the original specification.

Mechanical Compatibility: Both relays share identical mounting type (through hole), termination style (PC pin), seal rating (sealed - fully), and contact material (Silver Cadmium Oxide). Direct mechanical substitution is supported without circuit board redesign.

Inventory Availability: The T9AS5D12-5 is available in significantly higher quantities (6908 pcs) compared to the original part (1062 pcs), supporting production requirements and long-term supply security.

Frequently Asked Questions (FAQ)

Q: Can the T9AS5D12-5 be used as a direct replacement for the T90S5D12-5 in existing designs?

A: Yes. The T9AS5D12-5 is electrically and mechanically compatible with the T90S5D12-5. Both relays share identical coil voltage (5VDC), contact form (SPDT), contact rating (20A), mounting type (through hole), and termination style (PC pin). No circuit modifications are required for substitution.

Q: What are the differences between the T90S5D12-5 and T9AS5D12-5?

A: The primary differences are product status and compliance certifications. The T9AS5D12-5 is an active product with ROHS3 compliance and REACH status, while the T90S5D12-5 is obsolete. The T9AS5D12-5 also provides a higher maximum switching voltage (277VAC versus 240VAC). Minor variations exist in coil current (200 mA versus 185 mA) and coil resistance (25 Ohms versus 27 Ohms), which remain within acceptable operating tolerances.

Q: Are there packaging differences between these two relays?

A: The T90S5D12-5 is specified with a dash (-) packaging designation, while the T9AS5D12-5 is supplied in bulk packaging. Both relays use identical PC pin termination and through-hole mounting. Verify packaging requirements for your specific application and procurement process.

Q: What is the operating temperature range for both relays?

A: Both the T90S5D12-5 and T9AS5D12-5 operate across the same temperature range of -55°C to 85°C, ensuring thermal compatibility across industrial and commercial applications.

Q: Do both relays meet current regulatory standards?

A: The T9AS5D12-5 is ROHS3 compliant and REACH affected, meeting current regulatory requirements. The T90S5D12-5 compliance status is not specified. For new designs and long-term compliance, the T9AS5D12-5 is the recommended choice.

Q: What is the coil insulation class for these relays?

A: Both relays feature Class F coil insulation, providing thermal stability and reliability across the specified operating temperature range.

Q: Are the switching characteristics identical between the two relays?

A: Yes. Both relays share identical operate time (15 ms), release time (15 ms), must operate voltage (3.75 VDC), and must release voltage (0.5 VDC). Switching performance is equivalent between the two parts.