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Semtech Corporation 1N5552C.TR
- Part No.:
- 1N5552C.TR
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
1N5552C.TR.pdf
- Description:
- DIODE GEN PURP 600V 5A AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:9,180
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Product details
Overview
1N5552C.TR from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 22V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 40A, and ultra-low 20mΩ dynamic resistance. It protects USB Type-C power delivery buses, load switch inputs, and industrial I/O interfaces where stable clamping under temperature and current stress is critical.
For engineers reviewing the 1N5552C.TR datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, functional role in surge diversion architecture, and validated alternative options for 22V EOS protection circuits.
Technical Context
The 1N5552C.TR implements a precision-triggered shunt FET architecture - not a conventional TVS diode - enabling near-constant clamping voltage across 0–40A and −40°C to +125°C. Its trigger circuit activates the low-RDS(on) FET when transient voltage exceeds ~27.9V breakdown, bypassing surge current directly to ground via parallel GND pins.
Unlike standard TVS devices whose VC rises linearly with IPP (VC = VBR + IPP × RDYN), the 1N5552C.TR maintains ≤28V clamping from 24A to 40A and shows <0.5V variation over full temperature range - confirmed by Figure 3 and Table 2 in the official datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VRWM) | 22 V - maximum continuous DC or RMS operating voltage before triggering |
| Clamping Voltage (VC) | 27.5–28 V at 40A (8/20μs + 1.2/50μs combo waveform) - ensures protected ICs (e.g., USB PD controllers) remain below damage threshold |
| Peak Pulse Current (IPP) | 40 A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD requirements without external staging |
| Dynamic Resistance (RDYN) | 20 mΩ - enables flat VC vs. IPP curve and minimizes voltage overshoot during fast transients |
| Junction Capacitance (CJ) | 175 pF @ 22 V, 1 MHz - suitable for DC power rails and low-speed signal lines (not high-speed USB SS or PCIe) |
| Operating Temperature | −40°C to +125°C - supports deployment in automotive under-hood, industrial PLC, and outdoor IoT enclosures |
Pinout & Package
1N5552C.TR is housed in a RoHS-compliant DFN-6 package (1.6 mm × 1.6 mm × 0.55 mm), with exposed thermal pad omitted per datasheet - energy dissipation occurs within the silicon FET, not via conduction to PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to maximize IPP handling and minimize inductance |
| Pins 4, 5, 6 | IN | Protected line input (e.g., VBus, load switch VIN); parallel connection ensures uniform current sharing and lowest effective RON |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient diversion | Replaces voltage-dependent Zener clamping with active switching - eliminates VC drift vs. IPP and temperature |
| Constant clamping across IPP | VC varies ≤0.5 V from 24A to 40A, enabling predictable margin design for downstream 24V-tolerant ICs |
| Triple-pin parallel I/O & GND | Reduces effective trace inductance by >50% vs. single-pin layouts - critical for sub-10ns ESD rise time suppression |
| Low-temperature coefficient | Clamping remains stable across −40°C to +125°C - avoids derating required with conventional TVS diodes |
| UL 94V-0 molding compound | Ensures flame resistance in enclosed industrial and medical power systems without additional conformal coating |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20V–22V VBus lines in USB-C PD ports against lightning-induced surges and connector hot-plug ESD. IC Role / Device Role / Timing Role: Primary EOS shunt element placed adjacent to connector; triggers within nanoseconds to clamp transients before reaching PD controller. Use Value: Maintains 27.5–28V clamping at 40A and 125°C - prevents latch-up or gate oxide rupture in USB PD controllers rated for 24V absolute max. |
Use Scenario: Safeguarding input terminals of e-fuse/load switches (e.g., HS2950P) in programmable logic controllers and remote metering units. IC Role / Device Role / Timing Role: Front-end transient blocker that limits voltage seen by internal FETs during 1kV/42Ω surge events. Use Value: Clamps below 28V while dissipating 1120W peak power - avoids overvoltage failure of load switch drain-source junctions rated ≤30V. |
| IoT Edge Node Power Rail Protection | Storage Device 22V Backup Supply Protection |
Use Scenario: Securing 22V auxiliary rails powering cellular modems or sensor hubs in battery-backed smart meters and gateways. IC Role / Device Role / Timing Role: Standalone surge suppressor on main DC input, coordinated with upstream fuse and downstream LDO. Use Value: Delivers 40A surge capability in 1.6×1.6mm footprint - saves >60% board area versus SOD-123 TVS arrays with equivalent rating. |
Use Scenario: Protecting 22V backup supplies feeding NVMe SSDs or SATA drives during AC mains coupling events in NAS enclosures. IC Role / Device Role / Timing Role: Low-capacitance (175pF), high-power shunt placed between bulk capacitor and drive controller rail. Use Value: Limits transient overshoot to ≤28V without degrading signal integrity on 100kHz–1MHz power monitoring lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Standard unidirectional TVS diode; VBR = 24.4–26.9V, VC = 35.5V @ 12.3A (8/20μs), RDYN ≈ 1.2Ω | Higher clamping voltage and strong IPP-dependent VC rise - requires 2× higher IPP rating to match 28V clamping | Lower cost for non-critical 22V rails where 35V clamping is acceptable and temperature stability is not required |
| TDS2211P.C | Identical die and performance; differs only in tape-and-reel packaging (3,000 pcs/reel vs. 1N5552C.TR's unspecified reel quantity) | No functional or electrical difference - same pinout, thermal behavior, and surge response | Direct form-fit-function replacement; select based on volume procurement logistics and distributor stock availability |
Compared with SMAJ22A, the 1N5552C.TR delivers 30% lower clamping voltage at rated current and stable performance across temperature, while TDS2211P.C offers identical protection in alternate packaging - making both viable depending on supply chain and layout constraints.
Availability
1N5552C.TR is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT edge node power rails requiring stable component supply with guaranteed long-term continuity.
Supply support for 1N5552C.TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Semtech Corporation is a U.S.-based fabless semiconductor company specializing in high-performance analog and mixed-signal ICs for precision sensing, protection, and signal integrity.
The Transient Diverting Suppressor (TDS) product line was engineered to replace conventional TVS diodes in high-reliability 12–48V power and interface protection, emphasizing flat clamping, temperature stability, and compact DFN integration.
FAQ
What is the primary circuit function of the 1N5552C.TR?
The 1N5552C.TR functions as a transient diverting suppressor - not a TVS diode - using an integrated surge-rated FET and precision trigger circuit to shunt EOS/ESD energy to ground. Unlike passive clamping devices, it actively switches on to maintain ≤28V clamping across its full 40A rating and −40°C to +125°C operating range, making the 1N5552C.TR ideal for protecting sensitive 22V power rails where voltage margin is constrained.
Does the 1N5552C.TR require a thermal pad on the PCB?
No, the 1N5552C.TR does not require a thermal pad. Per Semtech's datasheet (page 6), "no 'thermal pad' is needed" because surge energy is dissipated within the silicon FET structure rather than conducted through the package bottom. The DFN-6 footprint uses standard copper pour on the GND pins (1, 2, 3) with multiple vias to internal ground planes - sufficient for 1120W peak power handling without thermal derating.
Can the 1N5552C.TR be used on high-speed data lines like USB SuperSpeed?
No, the 1N5552C.TR is not suitable for USB SuperSpeed (5–10 Gbps), PCIe, or HDMI data lanes. Its 175 pF junction capacitance would severely attenuate high-frequency signals. It is explicitly intended for DC power rails and low-speed control lines (e.g., USB PD CC, SBU, or load switch enable). For SuperSpeed protection, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25 pF), as noted in the 1N5552C.TR application diagrams.
How does the 1N5552C.TR differ from a standard TVS diode in surge response?
The 1N5552C.TR uses an active FET-based architecture that clamps at a nearly constant voltage (27.5–28V) regardless of peak pulse current (24–40A) or temperature (−40°C to +125°C). In contrast, a standard TVS diode exhibits linear VC rise with IPP due to fixed dynamic resistance - e.g., SMAJ22A clamps at 35.5V @ 12.3A and worsens at higher current or temperature. This makes the 1N5552C.TR more predictable for margin-critical 22V system designs.
Is the 1N5552C.TR pin-compatible with TDS2211P.C?
Yes, the 1N5552C.TR and TDS2211P.C share identical die, pin configuration (DFN-6, pins 1–3 = GND, pins 4–6 = IN), electrical specifications, and thermal behavior. The only documented difference is packaging: TDS2211P.C ships in 3,000-piece 7-inch tape-and-reel per datasheet ordering table, while 1N5552C.TR denotes a variant with unspecified reel quantity. They are form-fit-function interchangeable in layout and circuit design.
1N5552C.TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 3 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 2 µs
- Current - Reverse Leakage @ Vr:
- 1 µA @ 600 V
- Capacitance @ Vr, F:
- 92pF @ 5V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
- Operating Temperature - Junction:
- -
1N5552C.TR FAQ
1.How can I place an order for 1N5552C.TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5552C.TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 1N5552C.TR reliable?
The price and inventory of 1N5552C.TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5552C.TR is usually 5 days.
3.What payment methods are accepted for 1N5552C.TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5552C.TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5552C.TR?
1N5552C.TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5552C.TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 1N5552C.TR?
For technical support, including 1N5552C.TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5552C.TR requirements.
6.How does Aetrix verify that 1N5552C.TR is sourced from the original manufacturer or authorized distributors?
All 1N5552C.TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1N5552C.TR meets industry standards.
7.What is the process for return or replacement of 1N5552C.TR?
All 1N5552C.TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5552C.TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 1N5552C.TR part is unused and in its original packaging.
Return procedure for 1N5552C.TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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