B1212S-1WR3
1 W fixed-input isolated unregulated DC-DC converter with 12 V input and 12 V single output
Key details
| Part Number | B1212S-1WR3 |
|---|---|
| Manufacturer | MORNSUN |
| Category | Isolated DC-DC Converter |
| Lifecycle Status | Production |
| Series | B_S-1WR3 |
| Package / Case | 4-pin SIP module, 11.60 mm × 6.00 mm × 10.16 mm |
| Pin Count | 4 |
| Operating Temperature | -40°C to +105°C with derating |
| Last Verified | 2026-07-26 |
Part information
B1212S-1WR3 Overview
B1212S-1WR3 is a MORNSUN 1 W fixed-input isolated unregulated DC-DC converter with 12 V input and 12 V single output supplied in 4-pin SIP module, 11.60 mm × 6.00 mm × 10.16 mm. This page uses the exact orderable code because package, grade, temperature and option suffixes can change compatibility.
Key Technical Specifications
| Rated Power | 1 W |
|---|---|
| Input Voltage | 12 V nominal (10.8 to 13.2 V) |
| Output Voltage | 12 V DC, single unregulated output |
| Maximum Output Current | 83 mA |
| Isolation Test Voltage | 1500 V DC |
Package and Ordering Notes
The listed package is 4-pin SIP module, 11.60 mm × 6.00 mm × 10.16 mm with 4 pins, leads, lands or contacts. The featured image is a generic package illustration for form-factor identification and is not an actual date-code or lot photograph. The part or family is listed by MORNSUN as Production at the verification date.
Sourcing Guidance
Confirm current factory status, exact orderable suffix, packing format and lead time for B1212S-1WR3. Do not substitute a nearby family code without checking all electrical and package limits.
For an accurate quotation, include the full MPN, target quantity, acceptable date-code range, packaging format and destination. Icearth can help review traceability documents, label photos and electrical/package alignment before order placement.
Manufacturer Documentation
Technical values were checked against MORNSUN documentation. Use the linked datasheet as the controlling source and re-check revisions before PCB release or firmware qualification.
B1212S-1WR3 FAQ
What is B1212S-1WR3?
B1212S-1WR3 is a MORNSUN 1 W fixed-input isolated unregulated DC-DC converter with 12 V input and 12 V single output. It belongs to the B_S-1WR3 series.
What are the key specifications of B1212S-1WR3?
Rated Power is 1 W, and Input Voltage is 12 V nominal (10.8 to 13.2 V). Use the manufacturer datasheet for limits and test conditions.
What package does B1212S-1WR3 use?
B1212S-1WR3 uses 4-pin SIP module, 11.60 mm × 6.00 mm × 10.16 mm with 4 pins or leads. Verify the exact footprint and packing suffix before PCB or purchasing release.
Is B1212S-1WR3 still in production?
B1212S-1WR3 was listed in the manufacturer’s current Production or active product catalog when verified on 2026-07-26. Confirm factory status and lead time before ordering.
What should be checked before sourcing B1212S-1WR3?
Confirm the complete MPN, electrical ratings, package, temperature grade and packing format. Closely related series members can have different voltage, gain or output ratings and are not automatically interchangeable.
How B1212S-1WR3 differs from related orderable parts
B1212S-1WR3 belongs to the B_S-1WR3 family. Compared with B0512S-1WR3, the recorded differences include functional description: 1 W fixed-input isolated unregulated DC-DC converter with 12 V input and 12 V single output versus 1 W fixed-input isolated unregulated DC-DC converter with 5 V input and 12 V single output and Input Voltage: 12 V nominal (10.8 to 13.2 V), a higher recorded value than 5 V nominal (4.5 to 5.5 V). A shared family name does not establish pin, firmware or qualification compatibility.
| Part number | Recorded function | Package | Pins / contacts | Temperature | Lifecycle |
|---|---|---|---|---|---|
| B1212S-1WR3 | 1 W fixed-input isolated unregulated DC-DC converter with 12 V input and 12 V single output | 4-pin SIP module, 11.60 mm × 6.00 mm × 10.16 mm | 4 pins, leads or contacts | -40°C to +105°C with derating | Production |
| B0512S-1WR3 | 1 W fixed-input isolated unregulated DC-DC converter with 5 V input and 12 V single output | 4-pin SIP module, 11.60 mm × 6.00 mm × 10.16 mm | 4 pins, leads or contacts | -40°C to +105°C with derating | Production |
| B1215S-1WR3 | 1 W fixed-input isolated unregulated DC-DC converter with 12 V input and 15 V single output | 4-pin SIP module, 11.60 mm × 6.00 mm × 10.16 mm | 4 pins, leads or contacts | -40°C to +105°C with derating | Production |
| B1205S-1WR3 | 1 W fixed-input isolated unregulated DC-DC converter with 12 V input and 5 V single output | 4-pin SIP module, 11.60 mm × 6.00 mm × 10.16 mm | 4 pins, leads or contacts | -40°C to +105°C with derating | Production |
For an RFQ or AVL review, quote the complete B1212S-1WR3 code and verify the manufacturer ordering table, package drawing, packing method and revision. The related numbers above are comparison references, not declared drop-in replacements.
Exact order-code identity for B1212S-1WR3
For BOM, label, AVL and RFQ matching, preserve these visible code segments: opening alphabetic sequence B; middle numeric sequence one two one two; middle alphabetic sequence S; middle numeric sequence one; middle alphabetic sequence WR; and terminal numeric sequence three. The nearest published comparison codes are B0512S-1WR3; B1215S-1WR3; and B1205S-1WR3. Compare every segment because a changed character can identify a different density, voltage, package, temperature, qualification or packing option.
Do not shorten the requested code to B_S-1WR3 or remove its terminal characters. Ask the supplier to reproduce the complete code on the quotation and provide label or traceability evidence when exact suffix matching is mandatory.
Lifecycle and sourcing review
Lifecycle information is shown for reference. Confirm current manufacturer documentation, availability and technical suitability before purchase.
Confirm current factory status, exact orderable suffix, packing format and lead time for B1212S-1WR3. Do not substitute a nearby family code without checking all electrical and package limits.