In bi-directional versions (less common for the 2.0V variant), there is no polarity marking, and the device can be mounted in either direction.
Abstract
This paper provides a comprehensive technical overview of the VPM2SM series, a high-density, isolated DC-DC converter module designed for harsh environments and critical power systems. While often categorized as a "brick" converter, the VPM2SM distinguishes itself through integrated protection features, high efficiency, and a ruggedized mechanical design. This document explores the module’s electrical topology, thermal management considerations, protection mechanisms, and practical design implementations for industrial and telecommunications applications.
If you cannot find the exact vpm2sm datasheet from your preferred vendor, use these equivalents (all with matching 2.0V V_RWM, 600W, SMB package): vpm2sm datasheet
| Manufacturer | Part Number | Difference | |--------------|-------------|-------------| | Littelfuse | SMBJ2.0A | Uni-directional | | Littelfuse | SMBJ2.0CA | Bi-directional | | Vishay | SMBJ2.0A-E3 | - | | ON Semi | SZ1SMB2.0AT3G | Automotive grade | | Bourns | SMBJ2.0A | - | | Diodes Inc. | SMBJ2.0A-13-F | - |
Warning: Do not confuse "VPM2SM" with "P4SMA2.0A" (400W, DO-214AC package) or "SMCJ2.0A" (1500W, larger DO-214AB).
To achieve the rated 600W surge capability, follow these rules: In bi-directional versions (less common for the 2
| Parameter | Value | |-----------|-------| | Package | DO-214AA (SMB) | | Body Length | 4.30 – 4.70 mm | | Body Width | 3.55 – 3.95 mm | | Height | 2.15 mm max | | Lead Solder Temperature | 260°C for 10 seconds |
PCB Footprint Recommendation:
Copper pad size should be at least 1.5x the lead width. Use a 2.5mm x 2.5mm pad with a 0.5mm solder mask opening for optimal thermal dissipation.
Before diving into pin configurations, let’s review the hallmark features that define this component: If you cannot find the exact vpm2sm datasheet
| Parameter | Value/Description | | :--- | :--- | | Package Type | SMD (Surface Mount Device) – Side-looking, gull-wing leads | | Diode Type | PIN Photodiode | | Spectral Range | 350 nm to 1100 nm | | Peak Wavelength | 950 nm (Near Infrared) | | Active Area | 7.5 mm² (typical) | | High Photosensitivity | 0.55 A/W @ 950 nm (typical) | | Rise/Fall Time | 100 ns (typical, at 5V reverse bias) | | Dark Current | 5 nA max (at 10V reverse bias) | | Temperature Range | -40°C to +100°C (operating) |
These specifications confirm the VPM2SM is ideal for high-speed data links, optical encoders, and infrared remote control systems.