What is actually inside the device.
A eUICC in a package built for an engine bay, provisioned over the air to a published standard. This page is the technical detail behind the two form factors Streamax fits — written against the specifications anyone can read, not a supplier's brochure.
eSIM, eUICC, profile — three different words.
eSIM is the everyday name for a SIM built into a device. Instead of inserting plastic, the device downloads an operator profile — much like installing an app. Once it is there, you can activate it, switch operator or change plan remotely: no opening the device, no swapping cards.
eUICC — embedded Universal Integrated Circuit Card — is the architecture that makes that possible. It is the standard that lets one physical module download, store and switch between multiple operator profiles over the air.
A profile is one operator's subscription: its keys, its network-access application, its files and its applets. A eUICC can hold several; exactly one is active.
Both Streamax form factors are eUICC-capable and need no change to the terminal. Any modem compliant with the usual UICC standards (ETSI TS 102.221, TS 102.223) drives them as if they were an ordinary SIM.
GSMA defines two architectures for getting a profile onto a eUICC. They differ in who starts the conversation.
Machine-to-machine
The network pushes. A subscription manager talks to the eUICC directly and loads, enables or deletes profiles with no user present and no local interface. This is the model built for devices like a sealed dashcam — nobody is standing at the vehicle to confirm anything.
Consumer
The device pulls. A local profile assistant on the device fetches a profile from the subscription manager, usually after someone scans a QR code. It assumes a screen and a person.
A sealed fleet device with no screen is normally provisioned with the machine-to-machine model. Which applies to the unit you are deploying depends on the model — ask us for the one in your quote.
Soldered or removable — both are industrial.
The difference is mechanical, not functional. Pick the soldered chip for sealed, high-vibration installs; pick the card when somebody needs to be able to take it out.
eSIM chip — MFF2
An M2M identity module in the standardised MFF2 surface-mount package defined by ETSI TS 102.671, soldered straight onto the device board. No slot, no spring contacts, nothing to work loose or corrode. This is the default for sealed, automotive-grade builds.
- Immune to vibration and slot fretting
- Sealed and tamper-resistant — no SIM to remove
- One part, fitted on the line, never handled in the field
Industrial SIM card
The same grade of silicon in a removable card, delivered in a triple-cut frame: punch it out as 2FF (mini), 3FF (micro) or 4FF (nano) to fit whatever is in front of you. Specified to the same temperature range and the same design life as the soldered part.
- One SKU fits mini, micro and nano slots
- Swap in the field or pre-provision per region
- Same qualification family as the soldered part
eSIM chip — specification
| Package | ETSI MFF2 SMD, 6.00 × 5.00 mm |
|---|---|
| Package outline | JEDEC MO-220 |
| Contact pitch (e) | 1.27 mm |
| Lead length (L) / width (b) | 0.6 ± 0.15 mm / 0.4 ± 0.10 mm |
| Thermal pad (D2 × E2) | 4.20 × 3.40 mm (±0.15) |
| Moisture sensitivity | MSL 1 or MSL 3 (J-STD-020, J-STD-033) |
| Operating temperature | −40 °C to +105 °C |
| Supply voltage | ISO class A (5 V), B (3 V), C (1.8 V) |
| Classification | RoHS · REACH · halogen-free |
| Design life | 10 years |
Industrial card — specification
| Formats | 2FF plug-in · 3FF micro · 4FF nano (triple-cut frame) |
|---|---|
| Operating temperature | −40 °C to +105 °C |
| Storage temperature | −40 °C to +125 °C |
| Supply voltage | ISO class A (5 V), B (3 V), C (1.8 V) |
| Classification | RoHS · REACH · halogen-free |
| Design life | 10 years |
These are the figures Streamax specifies for the SIM fitted to its products, and the package geometry is as defined in ETSI TS 102.671. Both parts are qualified to that specification plus an extended JEDEC test set; certificates for the exact part in your device are available on request.
Contact layout.
Pin configuration follows the ETSI MFF2 specification (TS 102.671). The numbers below are package pins; the C-references are the matching contacts on a conventional SIM module (TS 102.221).
| Pin | Contact | Signal |
|---|---|---|
| 1 | C5 | VSS — ground |
| 3 | C7 | I/O — data |
| 6 | C3 | CLK — clock |
| 7 | C2 | RST — reset |
| 8 | C1 | VDD — supply |
| 2, 4, 5 | — | Unused. Leave floating — do not connect to any signal, not even ground. |
Top-side marking carries a traceability line, customer lines — printing the ICCID is strongly recommended — an operator identifier, and an index mark locating pin 1.
Pads shown in lime are the five in use. The index mark in the corner locates pin 1.
How a profile gets on, gets used, and gets removed.
A eUICC holds several operator profiles side by side, each isolated from the others, each loaded and removed remotely by a subscription manager. The sequence below is the GSMA model — it is the same wherever the profiles come from.
One profile at issuance
A eUICC leaves the factory with at least one operator profile loaded and enabled — from the modem's point of view it is an ordinary UICC from the first boot. Further profiles can be added before shipment or later, over the air.
Each profile is isolated
In the GSMA architecture a profile lives in its own issuer security domain. Its contents — keys, files, applets — stay private to the operator that owns it; nothing else on the card, and nobody else's profile, can read or administer them.
Download over the air
After issuance a profile is delivered to the eUICC over a secured channel established by the subscription manager. On machine-to-machine devices that channel normally rides the modem's own bearer, so the modem has to support the standard toolkit protocol for it.
Enabling — one at a time
Enabling a profile makes it the active subscription and automatically disables the previous one. Only one can be active, and the device only ever sees that one, so nothing above the SIM layer has to know the eUICC is there.
It lands on a refresh, never mid-session
The eUICC stages the change and then asks the terminal to refresh — the REFRESH command in ETSI TS 102.223. The swap takes effect on that clean re-attach, not in the middle of an upload.
Deleting
Deleting a profile clears its security domain and releases the memory, which can then hold a different operator.
Network-access applications
A profile can carry one or more NAAs, exactly as a traditional UICC does: SIM, USIM, CSIM, ISIM — so one part covers 2G through LTE and IMS without a hardware change.
What the modem has to support
The standard card application toolkit (ETSI TS 102.223), including REFRESH, and a data bearer the subscription manager can reach it over. Nothing else: the eUICC presents itself as an ordinary UICC.
Switching operator is a reboot, not a visit. The module stages the swap and requests a refresh; the device comes back on the new profile. Nothing in the vehicle is touched.
What Streamax requires of the part.
A SIM that fails at year three costs a truck roll and an RMA against the camera. These are the bars a part has to clear before it goes into a Streamax product.
Automotive-grade temperature range
−40 °C to +105 °C in operation. A cab roof in Riyadh and a yard in Harbin are the same part number.
A ten-year design life
The SIM has to outlast the camera it is soldered into, including a decade of daily write cycles from network attach and usage counters.
Qualified beyond the SIM baseline
Qualified to ETSI TS 102.671 plus an extended JEDEC test set. Certificates for the exact part in your device are available on request.
eUICC-capable, both form factors
Remote provisioning has to work on the soldered MFF2 part and on the removable card — so a deployment can mix them without changing how it is managed.
Standard electrical interface
ISO class A / B / C supply, standard contact assignment, nothing that needs a bespoke modem driver.
Clean materials declaration
RoHS, REACH and halogen-free, because the device carrying it has to clear the same bars.
What these modules comply with
Every figure on this page is either defined in one of these published specifications or is a requirement Streamax sets for the part it buys.
Tell us the routes, we will size the pool.
Send the countries you operate in, the device count, and the footage each vehicle uploads per day. You get back a pool size, a landed price per device per month, and a coverage read for every country on the list.
Published rates are list. Volume, contract term and a multi-region footprint are all worth putting in front of your Customer Success Manager or Business Development Manager before you build a budget from them.
What to send us
- Countries and, if they cross borders, the routes.
- Device count now and at 12 months.
- Device model and whether the SIM is soldered or a plug-in.
- Typical upload per vehicle per day, and what triggers a clip.
- Anything non-standard: private APN, fixed IP, VPN, IMEI lock.