Altera Stratix 10 Ordering Codes and Replacement Guide

A Stratix 10 orderable part number is a complete device configuration. In the official example 1SG280LN2F43I2VGS1, every field after the `1S` family signature changes a real procurement constraint: FPGA versus SoC variant, logic density, transceiver tile, channel count, tile speed, package, temperature, fabric speed, power profile, material status and optional device suffix.

The safest reading is 1S | G | 280 | L | N | 2 | F | 43 | I | 2 | V | G | S1. The two `2` fields are not duplicates. The first is the transceiver-tile speed grade; the second is the FPGA fabric speed grade. A quotation that drops either position is incomplete.

Decode 1SG280LN2F43I2VGS1 field by field #

Variant, tile and density choices are not grade substitutions #

Stratix 10 GX and SX share an ordering-code framework, but `G` and `X` are not interchangeable grades. GX is an FPGA variant. SX adds the hard processor system based on Arm Cortex-A53, which changes boot, power, pin-planning and software requirements. A GX-to-SX change is therefore a platform migration, not a shortage substitution.

The SiP field has the same engineering weight. The official GX/SX overview identifies L-Tile and H-Tile choices, while other Stratix 10 families use additional tile combinations under their own ordering documentation. The tile field, channel-count field and transceiver speed field must be considered together. Matching logic density alone does not preserve high-speed I/O capability.

The density code also cannot be treated as a pure logic-count upgrade. Higher-density parts may expose different I/O-bank capabilities, transceiver resources and migration restrictions even when a package name looks similar. Use the current product table to confirm the exact density/package migration group before changing the BOM.

Package code controls the PCB boundary #

The official GX/SX figure defines `F` as a FineLine BGA with 1.0 mm pitch and lists package codes including `35`, `43`, `48`, `50`, `53` and `55` for different pin counts and body sizes. The worked `43` code means 1,760 pins in a 42.5 × 42.5 mm body. Altera's current product record for 1SG280HU2F50E2VG confirms that the `F50` implementation is a 2,397-pin FBGA supplied in trays.

Changing `43` to `50` changes the physical package and cannot be pin-to-pin on the same footprint. Even within one package code, migration is conditional. Altera's HF35 migration guidance shows that some banks and power pins are migratable while other GPIO, VREF and RZQ conditions differ by density and bank use. The official pinout, pin-connection guideline and Quartus migration report remain the authority.

Speed, temperature and power fields #

Stratix 10 carries separate tile-speed and fabric-speed fields because the transceiver tile and FPGA core have different performance bins. A numerically faster adjacent OPN may be a possible engineering alternate, but it is not an automatic procurement replacement. Recompile the project, rerun timing and verify every licensed or encrypted IP constraint.

Temperature upgrades also require discipline. Moving from extended `E` to industrial `I` widens the lower junction-temperature limit, but the exact package, density, tile, speed, power and suffix must still match. Qualification, thermal design and customer AVL approval remain necessary.

The power character is particularly important. `V` represents the standard VID/SmartVID implementation in the official option figure. Fixed-voltage or lower-power alternatives documented for supported devices can require different power settings and regulator behavior. Do not buy a nearby power suffix until the board power tree and Quartus configuration are approved for it.

Replacement screening and pin-to-pin limits #

A shortage alternate can enter engineering review only when all hard physical fields match: family variant, SiP tile, channel count, package type and package code. Temperature and speed upgrades may sometimes be considered, but only after timing, power, transceiver and qualification review. The RoHS/material field and every optional suffix must be preserved unless the released documentation explicitly permits a change.

Reject an alleged drop-in replacement when any of these conditions applies:

• package code or ball count differs;
• GX/SX variant or SiP tile differs;
• transceiver channel count no longer covers the design;
• SmartVID/fixed-voltage implementation differs;
• the proposed device is an engineering sample;
• official migration documentation does not place both devices in a valid migration path;
• a bank-specific VREF, RZQ, EMIF, LVDS or voltage condition changes.

Altera's HF35 application note is a useful warning against the phrase “same package means compatible.” It documents both fully migratable banks and banks that require NC treatment, resistors, voltage changes or level shifting. Pin-to-pin status is a design result, not a distributor description.

Procurement checklist #

1. Capture the complete OPN from the released BOM, including material and optional suffix. 2. Confirm lifecycle and ordering status on the current Altera product record. 3. Match variant, density, SiP tile, channel count and both speed fields. 4. Confirm package code, pin count, body size, pitch and tray condition. 5. Check temperature and power options against the qualified board configuration. 6. Reject engineering-sample suffixes unless the build is explicitly an evaluation build. 7. Use the current product table, pinout and migration documents before approving any substitute. 8. Rerun Quartus compilation, timing, power and migration checks for every engineering alternate. 9. Put the exact accepted OPN—not a shortened family name—on the RFQ and purchase order.

Conclusion #

The Stratix 10 code is readable once its two speed fields and its physical package boundary are kept separate. For purchasing, the key rule is stricter: preserve the complete OPN. A faster speed or wider temperature grade may enter engineering review, but a different variant, tile, package, power implementation or optional suffix can invalidate the PCB or qualification basis. Treat pin compatibility as something proven by current Altera migration data and the released Quartus project.

Official references #

• Altera Stratix 10 GX/SX Device Overview — Available Options
• Altera Stratix 10 FPGA and SoC FPGA Quick Links
• Altera Stratix 10 Device Family Pin Connection Guidelines
• Altera AN 921: Device Migration Guidelines for Stratix 10 HF35 Package
• Altera 1SG280HU2F50E2VG product record