STPS5H100BY-TR

STMicroelectronics STPS5H100BY-TR is a 5 A, 100 V automotive-grade Schottky rectifier in a compact DPAK (TO-252) package, supplied in Tape & Reel for efficient SMT assembly. This article summarizes what engineers, buyers, and sourcing managers need to know to design in and procure the device with confidence.

Overview of STMicroelectronics STPS5H100BY-TR

The STMicroelectronics STPS5H100BY-TR is a single, surface-mount Schottky rectifier diode qualified to AEC-Q101 for automotive reliability. With a repetitive peak reverse voltage (VRRM) of 100 V and an average forward current (IF(AV)) of 5 A, it targets efficient rectification and protection roles in automotive and industrial power systems. The DPAK (TO-252) footprint balances current handling and board space, while the -TR suffix ensures Tape & Reel packaging for automated pick-and-place.

Engineers typically select Schottky diodes like the STPS5H100BY-TR when they want low conduction losses and fast switching behavior compared to standard PN junction rectifiers. In automotive designs, those traits translate into reduced heat, smaller heat-spreading copper areas, and improved overall conversion efficiency.

Key features and value for designers and buyers

• 100 V VRRM headroom: Suitable for 12 V and 24 V automotive subsystems and many industrial rails where inductive transients and line spikes demand reverse-voltage margin.
• 5 A average forward current: Supports moderate-power loads, synchronous-rectifier alternatives, and protection roles without moving to larger packages.
• Automotive-grade reliability: AEC‑Q101 qualification (Y-suffix) addresses stringent automotive validation expectations for discrete semiconductors.
• DPAK (TO‑252) footprint: A proven, thermally capable SMT package with widespread assembly support and predictable thermal paths via the exposed tab.
• Fast, low-loss rectification: Schottky technology delivers low forward drop and negligible charge storage, reducing switching loss and heat in high-frequency converters.
• Tape & Reel convenience (-TR): Streamlines automated assembly and replenishment.

Specifications

Only verified specifications from the provided data are listed below. For any parameter not stated here, refer to the official datasheet.

Electrical characteristics

• Diode type: Schottky rectifier
• Configuration: Single diode
• Repetitive peak reverse voltage (VRRM): 100 V
• Average forward current (IF(AV)): 5 A
• Reverse recovery behavior: Schottky technology (very fast, minimal charge storage); numeric value not specified in datasheet
• Forward voltage (VF), leakage (IR), surge current (IFSM), junction temperature range (TJ): Not specified in datasheet

Mechanical and packaging

• Package / case: DPAK (TO‑252, 3 leads)
• Mounting type: Surface mount
• Pin count: 3 (2 leads plus tab)
• Packaging: Tape & Reel (TR)
• Package outline drawings, pad layout, and coplanarity: Not specified in datasheet

Standards and compliance

• Automotive qualification: AEC‑Q101 qualified
• RoHS/REACH/halogen-free status: Not specified in datasheet

Ordering information

• MPN: STPS5H100BY‑TR
• Suffix “Y”: Automotive-grade (AEC‑Q101)
• Suffix “‑TR”: Tape & Reel
• Other orderable suffixes or packing options: Not specified in datasheet

Typical applications and use cases

The STPS5H100BY-TR serves a wide set of rectification and protection roles. Representative examples include:

• DC‑DC converter rectification: As a catch/rectifier diode in non-isolated buck, boost, or buck‑boost topologies where low forward drop directly improves efficiency and reduces thermal stress. The 100 V rating is helpful for higher input rails and transient conditions.
• Freewheeling diode for inductive loads: Across motor windings, solenoids, and relay coils to provide a low-loss path for inductive current when the driving switch turns off, mitigating voltage overshoot and EMI.
• Reverse‑polarity protection: In series with the supply or as part of a more elaborate reverse‑battery network to safeguard sensitive electronics in vehicles and industrial systems.
• OR‑ing and ideal diode functions: Combine multiple supplies or batteries while preventing backfeed. Schottky behavior reduces forward loss compared to standard rectifiers, which is valuable in cold‑crank and brownout scenarios.
• Automotive power supplies and ECUs: Suitable for under‑hood and in‑cabin control modules where AEC‑Q101 components are preferred to meet OEM qualification flows.

Design-in guidance

While exact numeric performance metrics beyond VRRM and IF(AV) are not included here, the following best practices help ensure reliable use of the STMicroelectronics STPS5H100BY‑TR:

• Voltage margining: Choose VRRM with adequate margin above the worst‑case reverse voltage in your system, including inductive kickback and transient events. The 100 V rating offers comfortable headroom for 12 V/24 V automotive and many industrial rails.
• Current and thermal considerations: IF(AV) is 5 A; verify average and RMS currents in the intended role, including ripple and surge conditions. For sustained currents near ratings, use generous copper area on the cathode/anode pads to spread heat from the DPAK tab into the PCB. Consider thermal vias to inner planes when applicable.
• Layout for low EMI: Keep the rectification current loop area small. Place the diode close to the switching device and input/output capacitors. Minimize parasitic inductance in the high‑di/dt path.
• Transient suppression: If switching edges or load dynamics create voltage overshoots that approach VRRM, consider snubbers or clamp networks. Ensure the diode’s reverse‑voltage stress stays within rating under all operating conditions.
• Startup and fault cases: Evaluate reverse‑battery events, hot‑plugging, motor stall, and short‑circuit scenarios. Schottky diodes can experience significant surge currents; confirm the application’s surge profile against the device’s surge capability (not specified in datasheet here; consult the official document).

Package and assembly notes

• Footprint: DPAK (TO‑252) is widely supported; most assembly houses have standard stencils and reflow profiles for this package class.
• Soldering: Follow your assembler’s recommended profiles for DPAK bodies and paste apertures. Proper wetting on the tab is crucial for both electrical and thermal performance.
• Orientation: The device features 3 connections (2 leads plus tab). Reference the datasheet’s pinout to align polarity correctly in your layout and assembly documentation.
• Handling: For automotive-grade components, follow appropriate ESD and moisture controls (MSL level not specified in datasheet here).

Compliance, reliability, and AEC‑Q101 context

The STPS5H100BY‑TR carries AEC‑Q101 qualification, which is the de‑facto standard for discrete semiconductors used in automotive applications. In practical terms, this indicates the device has passed a battery of stress tests related to temperature cycling, high‑temperature reverse bias, power cycling, and other reliability screens defined by the standard. For OEMs and Tier‑1 suppliers, using AEC‑Q101 components simplifies PPAP and qualification workflows and supports uniform reliability expectations across platforms.

Beyond AEC‑Q101, programs often require RoHS/REACH compliance, halogen‑free declarations, and material composition details. These are not specified in the provided data. If your quality plan mandates environmental documentation, consult the product page or request official compliance certificates from STMicroelectronics.

Lifecycle, availability, and sourcing guidance

• Lifecycle status: Not specified in datasheet. Always verify current lifecycle state and longevity commitments on the STMicroelectronics product page before finalizing a design or placing volume orders.
• Procurement configuration: The -TR suffix denotes Tape & Reel packaging suitable for automated assembly lines. Confirm orientation, reel size, and leader/trailer lengths with your CM.
• Grade and lot requirements: If your program mandates automotive-grade builds, ensure you order the Y‑suffix variant (as present in STPS5H100BY‑TR) and capture automotive quality flows in your purchase orders and AVL/AML.
• Second sourcing: Where a single MPN is required for AVL minimization, document acceptable alternates by parameter rather than by part number (VRRM, IF(AV), package, grade). No specific replacements are listed in the provided data.
• Documentation package: Maintain the latest datasheet, product change notifications (PCNs), and material declarations in your project’s compliance folder. If you require PPAP or additional reliability reports, request them through ST’s sales channel.

Selecting alternatives within a family or across vendors

No approved alternates are listed in the provided data. If you must consider options, align on:

• VRRM equal to or above 100 V for similar or improved headroom
• IF(AV) of 5 A (or higher with equivalent thermal performance in the same package)
• DPAK (TO‑252) or footprint‑compatible packages
• Automotive grade (AEC‑Q101) for in‑vehicle applications
• Equivalent or better forward drop and leakage performance at your operating temperature range (values not specified here—compare using vendor datasheets)

When cross‑referencing, verify pinouts, thermal resistances, and surge current ratings; a mechanical match is not sufficient if dynamic or thermal characteristics differ.

Frequently asked questions (FAQs)

• What does the “‑TR” suffix mean in STPS5H100BY‑TR?
• It indicates Tape & Reel packaging for automated pick‑and‑place assembly.
• What does the “Y” suffix denote?
• The Y suffix indicates automotive‑grade qualification (AEC‑Q101).
• What package is this device supplied in?
• DPAK (TO‑252) with 3 connections (2 leads plus tab).
• Is STPS5H100BY‑TR suitable for automotive designs?
• Yes. It is AEC‑Q101 qualified, making it appropriate for many automotive applications when used within its ratings.
• What are the key ratings?
• VRRM = 100 V, IF(AV) = 5 A, Schottky rectifier, single configuration. Additional figures (VF, IR, IFSM, TJ) are not specified in the provided data; check the datasheet.
• Can I use this for OR‑ing or reverse‑polarity protection?
• Yes. It is commonly used for OR‑ing and reverse‑battery protection schemes in automotive and industrial systems.
• Is there a specified operating temperature range?
• Not specified in datasheet within the provided data.

Summary

The STMicroelectronics STPS5H100BY‑TR brings together a practical 100 V reverse rating, 5 A average forward current capability, and AEC‑Q101 automotive qualification in a widely supported DPAK (TO‑252) package. Its Schottky behavior supports efficient rectification and robust protection roles across automotive and industrial designs. For finalized specifications—such as forward voltage, leakage, surge current, and temperature limits—consult the official STMicroelectronics datasheet and product page. When sourcing, order the exact STPS5H100BY‑TR MPN to receive the automotive‑grade, Tape & Reel configuration expected for series production.

Resources

• Datasheet: https://www.st.com/resource/en/datasheet/stps5h100.pdf
• Product page: https://www.st.com/en/diodes-and-rectifiers/stps5h100.html

Note: Parameters not listed here are not specified in datasheet within the provided data. Always verify the latest documentation from STMicroelectronics before design freeze or volume purchase.