The AMBRP5100 is a 5 A, 100 V Schottky barrier rectifier in a PDFN56 package from Good-Ark, with 0.70 V typical forward drop at 5 A, a 120 A surge rating, and 3 °C/W junction-to-case resistance. It targets T-BOX, lighting-control, and SMPS output boards where a compact 5 A rectifier carries the load.
AMBRP5100 at a Glance
All values below come from the official Good-Ark datasheet:
| Parameter | Symbol | Value |
|---|---|---|
| Maximum repetitive peak reverse voltage | VRRM | 100 V |
| Average forward current | IF(AV) | 5 A |
| Peak forward surge current (8.3 ms) | IFSM | 120 A |
| Forward voltage, IF = 5 A, TJ = 25 °C | VF | 0.70 typ / 0.76 max V |
| Forward voltage, IF = 5 A, TJ = 125 °C | VF | 0.68 max V |
| Reverse leakage, TJ = 25 °C / 100 °C | IR | 20 µA max / 5 mA max |
| Thermal resistance | RθJC / RθJA | 3.0 / 50 °C/W |
| Package | — | PDFN56 |
The part ships 3,000 pieces per reel, with AEC-Q101 qualification available. Note: the product page displays PDFN5060 for the package in one listing; the datasheet and this article use PDFN56 for the same 5 × 6 mm leadless body.
Why T-BOX and Lighting Control Choose PDFN56
Telematics boxes and lighting-control boards are dense, low-profile modules with no room for a tab package. The PDFN56 gives them a 5 A capable rectifier in a 5 × 6 mm leadless body, with the exposed pad conducting heat into the board instead of into a heatsink that does not exist. The package is the fit for the form factor, and the 100 V class covers the rail and transients with margin.
The same footprint serves the lighting-control and SMPS output roles, so a product family can share the layout and scale the current class by changing the part.
Electrical Characteristics Summary
The electrical story is the low-drop, low-leakage profile at 5 A. At 5 A and 25 °C the forward drop is 0.70 V typical, 0.76 V maximum—the numbers the loss budget uses at the working condition—and at 125 °C the maximum falls to 0.68 V while the leakage term grows from 20 µA at 25 °C to 5 mA at 100 °C. The leakage at the working reverse voltage and hot junction belongs in the same thermal budget, read from the datasheet curve rather than scaled from the cold number.
The 120 A surge is a single-pulse survival margin at 8.3 ms half-sine, checked against the real inrush waveform rather than treated as a repetitive capability.
The electrical summary also carries the comparison to its 10 A sibling: the AMBRP10H100 carries 180 A surge and a 0.76 V typical drop at 10 A, and the two parts share the PDFN56 footprint, so a design that outgrows the 5 A class moves up without a layout change. The family is the scalable answer to the 1–10 A board-level band.
The electrical summary also states what the part is not: it is not a surge absorber, not a repetitive-current part at its IFSM, and not a substitute for a higher voltage class. The ratings are read with their conditions, and the design treats each one as a separate gate.
The same numbers answer the design questions: the maximum VF sets the loss budget, the leakage at 100 °C sets the standby term, and the IFSM sets the inrush check—three gates, one datasheet.
The three gates also map to the design review: each is checked against the working condition, and the part is selected only when all three close.
Design-In Notes: Pad and Layout
The board completes the part: a copper pad matching the exposed pad, a thermal via grid into inner planes, and stencil apertures controlling solder volume turn the 3 °C/W junction-to-case figure into a usable system number. The PDFN design guide owns the rules; the design-in note here is that the pad and via design is the thermal design.
The switching node layout follows the rectifier layout rules—a small, symmetric loop from the transformer or source through the diode to the output capacitor—so the low-VF part’s benefit is not eaten by ringing.
The layout also separates the thermal and electrical paths: the pad and vias carry the heat while the leads carry the current, and the two share the same copper. The design note is that the electrical loop and the thermal path are one layout, reviewed together.
Documentation and Samples
The AMBRP5100 product page hosts the datasheet, and the Schottky rectifier diodes category shows where the part sits beside the 10 A AMBRP10H100. Contact Good-Ark with your load current, rail voltage, and board design to confirm documentation and request samples.
Frequently Asked Questions
What is the forward drop of the AMBRP5100?
0.70 V typical and 0.76 V maximum at 5 A and 25 °C, with 0.68 V maximum at 125 °C. Use the maximum at the operating temperature for the loss budget.
What package is it in?
PDFN56, a 5 × 6 mm leadless package with an exposed pad for board-level heat conduction. The product page may display PDFN5060 in one listing; the datasheet uses PDFN56 for the same body.
Is it automotive qualified?
AEC-Q101 qualified available—the part can be supported for automotive qualification with the appropriate documentation. Confirm the exact status with the supplier before project approval.
How much surge can it survive?
120 A at 8.3 ms half-sine, a single-pulse survival margin checked against the real inrush waveform, not a repetitive rating.
Where does it fit best?
T-BOX and lighting-control boards, SMPS outputs, and any dense 5 A role where the PDFN56 footprint and low drop win.
Specifications, Applications, Ordering
Specifications:
5 A / 100 V Schottky in PDFN56; VF 0.70 typ / 0.76 max V at 5 A; IFSM 120 A; IR 20 µA max at 25 °C; RθJC 3.0 °C/W.
Applications:
T-BOX control, automotive lighting control, SMPS output stages, and board-level roles up to 5 A.
Ordering:
the datasheet is on the AMBRP5100 product page; request samples and documentation through Good-Ark sales with your load and board design.