Description
1. Unboxing & Physical Snapshot (Dynamic List)
- Model & Brand: Siemens 6ES5376-0AA21 (SIMATIC S5 EPROM Memory Submodule)
- Physical Dimensions: Approximately 90mm x 55mm x 12mm (W x H x D)
- Estimated Shipping Weight: 0.04 kg (packaged with anti-static bubble cushioning)
- What’s in the Box: 1x 6ES5376-0AA21 memory submodule sealed inside a metal-out anti-static ESD shielding bag, quartz window UV-protection label sticker, and original OEM manufacturer paperwork.
2. Product Introduction (Structure C: Compliance Hook)
Regulatory compliance governs every decision inside high-consequence process environments, requiring hardware certified to strict international safety thresholds. Operating legacy control systems demands components carrying transparent documentation and traceable manufacturing histories to pass independent safety audits.
The Siemens 6ES5376-0AA21 satisfies these rigorous verification protocols through precise isolation boundaries and documented thermal limits. (We always inspect the physical laser-etched serial codes against the accompanying Certificate of Conformance during incoming receiving inspections.)
3. Core Technical Specifications
| Parameter | Value |
| Memory Capacity | 16 KB (16K \times 8 bit) |
| Memory Technology | EPROM (Erasable Programmable Read-Only Memory with UV quartz window) |
| Backplane Power Draw | Max 10 mA at 5V DC supply |
| Data Retention Time | Minimum 10 years without external power |
| Operating Temperature | 0°C to +60°C (natural convection cooling) |
| Storage Temperature | -40°C to +70°C |
| Connector Interface | 48-pin dual-in-line gold-plated pin header |
| Enclosure Material | Molded synthetic polymer housing with quartz window label |
4. Global Compliance & Industry Certifications
Auditors require rigorous proof of design compliance before authorizing high-risk continuous process operations.
- Expected Certifications: CE Mark, UL/cUL Listed (Industrial Control Equipment), CSA certification, and VDE conformity.
- Compliance Significance: The UL listing guarantees that internal creepage distances and dielectric isolation barriers prevent dangerous arc-over faults. (Class I Div 2 classifications protect against localized spark ignition in volatile chemical atmospheres.) Verify specific lot certifications with OEM documentation before closing out plant safety reviews.
5. Long-Term Storage & Asset Preservation Guide
Warehouse storage destroys unprotected electronics if humidity and electrostatic hazards go unmanaged. Keep this asset safe:
- Store the module sealed tightly inside its original metal-out anti-static (ESD) shielding bag to block atmospheric moisture and static discharge.
- Keep warehouse relative humidity strictly below 60% to prevent oxidation on the 48-pin gold-plated connector array.
- Ensure the ultraviolet protective sticker remains securely affixed over the quartz window to prevent accidental data erasure caused by ambient fluorescent lighting or sunlight exposure.
6. Physical Installation Prerequisites
Proper mechanical placement guarantees longevity and prevents localized overheating inside the cabinet enclosure.
- Handling Protocol: Discharge static buildup via a grounded wrist strap before handling the exposed pin header to prevent electrostatic breakdown of memory cells.
- Bay Alignment: Verify proper orientation using the molded guide tabs before seating the pin header into the CPU memory socket to avoid bending delicate connector pins.
7. Buyer’s FAQ (Logistics & Compliance Focus)
Q: Which Harmonized System (HS) code applies to international customs clearance for the 6ES5376-0AA21?
A: This memory submodule typically clears under HS code 8542.32 (Electronic integrated circuits as memories), though importers should confirm final classification with their broker according to regional tariffs.
Q: Does this surplus unit come with pre-loaded plant user logic?
A: New surplus inventory arrives blank or with factory test patterns; engineering teams must flash the specific compiled S5 program file using an authorized EPROM programmer prior to deployment.
Q: How does the declared Country of Origin (COO) influence international shipping paperwork?
A: The COO—typically Germany for this manufacturing run—dictates preferential duty rates under international trade agreements, making a verified certificate of origin essential.
