Sumitomo 8240-0531 | Sealed Female Terminal 0.3-0.5mm² | Tin Plated

gd-admin — Tue, 28 Apr 2026 03:20:50 +0000

Shop original Sumitomo 8240-0531 sealed female terminals at Suzhou Suqin Electronic. Designed for 0.3-0.5mm² wire size with tin plating and -40°C to 120°C rating. Ideal for waterproof automotive connectors.

Data Overview

Attribute Category	Technical Specification
Brand	Sumitomo
Model / PN	8240-0531
Gender	Female (Socket)
Wire Size Range	0.3mm² – 0.5mm²
Terminal Material	Copper Alloy
Surface Plating	Tin Plated (Sn)
Environmental Protection	Sealed / Waterproof
Operating Temperature	-40°C to +120°C
Mating Series	Sumitomo Waterproof Connector Series
Packaging	Reel / Bulk Supply
Compliance	Automotive Grade / RoHS

Product Details

Material Science & Plating	Mechanical Integrity & Sealing	Strategic Business Value
High-Conductivity Copper Alloy	Provides low electrical resistance and stable current flow, even in small wire gauges (0.3-0.5mm²).	Signal Precision: Ensures reliable data and power transmission for sensitive automotive ECUs and sensors, preventing system errors.
Premium Tin (Sn) Plating	Offers superior corrosion resistance and prevents oxidation in humid environments.	Long-Term Durability: Extends the service life of the wire harness by maintaining high contact integrity throughout the vehicle’s lifespan.
Sealed Design for Waterproofing	Specifically engineered to work with wire seals to prevent moisture ingress into the connector housing.	Harsh Environment Ready: Ideal for “wet” areas of the vehicle, reducing the risk of short circuits and terminal corrosion in engine bays.
Precision Crimp Zone Structure	Designed for automated high-speed crimping, ensuring a robust mechanical bond between the wire and contact.	Production Efficiency: Minimizes terminal deformation and assembly rejects, lowering the total cost of quality for wire harness manufacturers.

Our advantage

● Brand supply diversification,
Convenient one-stop shopping

● Covers a wide range of fields
Automobile, electromechanical, industrial, communication, etc.

● Complete information, fast delivery
Reduce intermediate links

● Good after-sales service
Quick response, professional reply

● Original genuine guarantee
Support professional consultation

● After-sales problems
Ensure that the imported original products are genuine. If there is a quality problem, it will be solved within one month of receiving the goods.

Q1: Does the 8240-0531 require a specific wire seal for waterproofing?

A: Yes. Since the 8240-0531 is a “Sealed” type terminal, it must be used with a compatible rubber wire seal (Grommet) and inserted into a waterproof connector housing to achieve its full IP rating against moisture and dust.

Q2: Is the 8240-0531 compatible with non-Sumitomo connectors?

A: Terminal compatibility is highly specific. While it is designed for Sumitomo Waterproof Series housings, it may fit certain OEM-equivalent housings. We recommend verifying the dimensions of the terminal cavity or consulting our technical team for compatibility confirmation.

Q3: What is the benefit of Tin (Sn) plating for this 120°C rated terminal?

A: Tin plating provides an excellent balance of conductivity and cost-effectiveness while offering a high level of protection against atmospheric corrosion. For the -40°C to 120°C range, it ensures stable contact resistance, which is critical for signal-level connections in automotive sensors.

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