Boot ROM Socket: Voltage Rating 50V AC/DC, Pin Count 28-32 pins

Q: What is the purpose of a Boot ROM socket on a Network Interface Card?

The Boot ROM socket allows installation of a removable firmware chip that contains boot code for network initialization. This enables features like PXE (Preboot Execution Environment) booting, remote system deployment, and network-based operating system installation without local storage media.

Q: Can Boot ROM sockets be replaced if damaged?

Yes, Boot ROM sockets are designed as replaceable components. They can be desoldered from the NIC circuit board and replaced with compatible sockets, though this requires specialized soldering equipment and skills to avoid damaging adjacent components.

Q: What types of ROM chips are compatible with standard Boot ROM sockets?

Most Boot ROM sockets support standard DIP (Dual In-line Package) ROM chips with 28 or 32 pins, including EPROM, EEPROM, and flash memory chips. Compatibility depends on pin configuration, voltage requirements (3.3V or 5V), and programming protocols supported by the NIC controller.

Component Specifications

Definition

A Boot ROM socket is an integrated circuit socket designed to accommodate a removable read-only memory (ROM) chip on a Network Interface Card. This component provides the physical interface for firmware storage that contains essential boot code, allowing the NIC to initialize network connectivity during system startup. The socket enables easy replacement or upgrade of firmware without soldering, supporting hot-swapping in some configurations. It typically features precise pin alignment, secure retention mechanisms, and electrical contacts optimized for low-resistance data transfer between the ROM chip and NIC controller.

Working Principle

The Boot ROM socket operates by providing electrical connectivity between the ROM chip's pins and the NIC's circuit board. During system boot, the NIC controller reads firmware instructions from the ROM chip through the socket's contacts. The socket maintains stable mechanical and electrical connections through spring-loaded contacts or zero-insertion-force (ZIF) mechanisms, ensuring reliable data transfer. It supports parallel or serial communication protocols depending on ROM type, facilitating the transfer of boot code that initializes network protocols, configures hardware parameters, and enables network boot capabilities like PXE.

Materials

High-temperature thermoplastic (PBT, LCP) housing, phosphor bronze or beryllium copper contacts with gold plating (0.5-1.27μm), nickel underplating, tin-lead or lead-free solder plating on terminals.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Pin Count	28-32 pins
Contact Pitch	2.54mm
Mounting Type	Through-hole or surface mount
Current Rating	1A per pin
Voltage Rating	50V AC/DC
Insertion Force	5-15N
Withdrawal Force	2-8N
Contact Resistance	<20mΩ
Insulation Resistance	>1000MΩ
Operating Temperature	-40°C to +85°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 9001, IEC 60352, JEDEC MO-015

Parent Products

This component is used in the following industrial products

Network Interface Card

A hardware component that enables a computer to connect to a network and communicate with other devices.

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Network Interface Cards

Hardware components that enable network connectivity by providing a physical interface between a computer and a network medium.

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Engineering Analysis

Risks & Mitigation

Contact oxidation leading to connectivity failure
Mechanical stress causing pin deformation
Electrostatic discharge damaging ROM chip
Incompatible firmware causing boot failure
Poor solder joints creating intermittent connections

FMEA Triads

Trigger: Oxidation of socket contacts due to environmental exposure
Failure: Intermittent or complete loss of electrical connection between ROM chip and NIC
Mitigation: Use gold-plated contacts, apply conformal coating to circuit board, maintain controlled storage environment with proper humidity levels

Trigger: Excessive insertion force during ROM chip installation
Failure: Bent or broken socket pins, damaged ROM chip leads
Mitigation: Implement ZIF (Zero Insertion Force) socket design, provide proper installation tools, include alignment guides in socket design

Trigger: Thermal cycling stress from repeated power cycles
Failure: Cracked solder joints between socket and circuit board
Mitigation: Use high-temperature solder alloys, implement strain relief in socket design, ensure proper thermal management in NIC enclosure

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Pin alignment tolerance ±0.1mm, contact position tolerance ±0.05mm, coplanarity <0.1mm

Test Method

ICT (In-Circuit Test) for electrical continuity, visual inspection per IPC-A-610, insertion/withdrawal force testing per IEC 60512, thermal cycling test (-40°C to +85°C, 500 cycles)

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

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Manufacturers of Boot ROM Socket

Manufacturer profiles associated with Boot ROM Socket.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the purpose of a Boot ROM socket on a Network Interface Card?