My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM5S17AHE3/2D
- Part No.:
- SM5S17AHE3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM5S17AHE3/2D.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,698
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM5S17AHE3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor diode designed for automotive load dump protection in high-reliability power line circuits. It features a 17.0 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR) at 5 mA, 27.6 V clamping voltage (VC) at 130 A peak pulse current, and 3600 W peak pulse power (10/1000 µs). Its DO-218AB package supports operation up to TJ = 175 °C and meets AEC-Q101 qualification.
For engineers reviewing the SM5S17AHE3/2D datasheet, SM5S17AHE3/2D pinout, SM5S17AHE3/2D application, or SM5S17AHE3/2D equivalent, key selection criteria include unidirectional polarity, 175 °C junction rating, ISO7637-2 compliance for load dump transients, low leakage (<10 µA at VWM), and thermal resistance of 1.0 °C/W (junction-to-case).
Technical Context
The SM5S17AHE3/2D employs passivated anisotropic rectifier technology optimized for high-temperature stability and surge robustness. Its unidirectional configuration uses the metal heatsink as the anode terminal, enabling direct thermal coupling to PCB copper for enhanced power dissipation during 10 ms exponential load dump events.
It delivers 3600 W peak pulse power under 10/1000 µs waveform and retains 2800 W under longer 10/10 000 µs stress, with clamping performance validated at TJ = 175 °C. The device sustains 500 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits <2.0 V forward voltage at 100 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17.0 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 18.9 V / 20.9 V at IT = 5 mA - Ensures reliable turn-on margin above VWM for stable clamping |
| VC @ IPPM | 27.6 V at 130 A (10/1000 µs) - Limits downstream voltage stress during worst-case transients |
| PPPM | 3600 W (10/1000 µs) - Withstands automotive load dump surges per ISO7637-2 |
| TJ max. | 175 °C - Enables placement near hot engine-control electronics without derating |
| RθJC | 1.0 °C/W - Supports efficient heat transfer to heatsinked PCB copper areas |
| Polarity | Unidirectional - Anode connected to heatsink; cathode to protected line |
Pinout & Package
Package: DO-218AB - Surface-mount, thermally enhanced case with integral metal heatsink; anode terminal is the exposed metal base (heatsink), cathode is lead 1; meets UL 94 V-0, MSL Level 1, JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Metal Heatsink) | High-current return path and thermal interface | Must be soldered to ≥100 mm² copper pour for rated 3600 W pulse handling |
| Cathode (Lead 1) | Transient current entry point | Connected to protected line (e.g., 12 V battery rail); carries full surge current to anode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood applications including temperature cycling, humidity, and mechanical shock |
| Junction passivation | Stable VBR and low leakage (<10 µA at VWM, TJ = 175 °C) over lifetime and temperature |
| ISO7637-2 compliance | Guaranteed clamping performance against 12 V system load dump transients (10 ms exponential) |
| Low VF at high IF | <2.0 V at 100 A enables minimal forward conduction loss during surge recovery |
| MSL Level 1 | Reflow-compatible up to 245 °C peak without moisture-induced damage |
Applications
| Automotive Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting microcontroller power rails and CAN transceiver supplies from alternator load dump transients during ignition-off events. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤27.6 V, preventing latch-up or damage to 3.3 V/5 V logic supplies downstream. |
Use Scenario: Safeguarding LIN bus transceivers and window motor drivers against inductive switching spikes from solenoids and relays. IC Role / Device Role / Timing Role: Primary overvoltage protection on 12 V supply rail feeding multiple low-voltage regulators. Use Value: Absorbs 3600 W surges without degradation, maintaining system uptime in harsh vehicle environments. |
| Advanced Driver Assistance Systems (ADAS) Camera Power Input | Electric Power Steering (EPS) ECU Power Stage |
Use Scenario: Shielding image sensor and ISP power domains from battery line disturbances during start-stop cycles. IC Role / Device Role / Timing Role: First-line transient suppressor upstream of LDOs and buck converters powering CMOS sensors. Use Value: Clamps within 100 ns to prevent pixel corruption or reset events caused by sub-100 ns voltage overshoots. |
Use Scenario: Protecting gate drivers and current sense amplifiers in EPS motor control circuits from back-EMF spikes. IC Role / Device Role / Timing Role: High-energy TVS mounted directly at H-bridge power input terminals. Use Value: Handles repetitive 500 A surge currents while maintaining <10 µA leakage at 17 V, ensuring signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A | DO-214AC package; lower PPPM (400 W); RθJC ≈ 50 °C/W | Not suitable for load dump; limited to low-energy ESD/surge | Select only for cost-sensitive non-automotive applications with <500 W surge requirements |
| SMCJ17A | DO-214AB package; same VWM/VBR; PPPM = 1500 W; RθJC = 2.5 °C/W | Meets ISO16750-2 but not ISO7637-2 load dump; requires larger PCB area | Use where space permits and 1500 W clamping suffices; verify thermal design for 175 °C operation |
Compared with SMAJ17A and SMCJ17A, the SM5S17AHE3/2D uniquely combines AEC-Q101 qualification, 3600 W load dump capability, and 1.0 °C/W thermal resistance in DO-218AB-enabling compact, high-power automotive protection without external heatsinking.
Availability
SM5S17AHE3/2D is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera systems, and electric power steering ECUs requiring stable component supply across extended temperature and high-surge environments.
Supply support for SM5S17AHE3/2D 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The SM5SxxA series is part of Vishay's PAR® TVS platform, engineered specifically for automotive-grade transient suppression-including load dump, jump start, and inductive switching-with emphasis on thermal robustness and AEC-Q101 compliance.
FAQ
What is the maximum clamping voltage of the SM5S17AHE3/2D under standard test conditions?
The SM5S17AHE3/2D has a maximum clamping voltage (VC) of 27.6 V when subjected to its rated peak pulse current of 130 A using the 10/1000 µs waveform at TA = 25 °C. This value is measured per IEC 61000-4-5 and ensures downstream components see no more than 27.6 V during worst-case transients. The SM5S17AHE3/2D maintains this clamping performance even at elevated junction temperatures up to 175 °C.
Is the SM5S17AHE3/2D suitable for ISO7637-2 load dump protection?
Yes, the SM5S17AHE3/2D is explicitly rated to meet ISO7637-2 surge requirements for 12 V automotive systems. Its 3600 W peak pulse power (10/1000 µs) and validated 27.6 V clamping at 130 A enable it to suppress the 10 ms exponential load dump waveform without failure. The SM5S17AHE3/2D is also AEC-Q101 qualified, confirming its suitability for under-hood deployment.
How is polarity configured on the SM5S17AHE3/2D, and what is the anode connection?
The SM5S17AHE3/2D is unidirectional, with the metal heatsink serving as the anode terminal and lead 1 as the cathode. This configuration requires the heatsink to be connected to the higher-potential side (e.g., battery positive) and the cathode to the protected line. The SM5S17AHE3/2D datasheet confirms "Polarity: heatsink is anode", and proper orientation is critical for correct clamping behavior.
What is the thermal resistance and recommended mounting for optimal power handling of the SM5S17AHE3/2D?
The SM5S17AHE3/2D has a typical junction-to-case thermal resistance (RθJC) of 1.0 °C/W. To achieve rated 3600 W pulse power, the metal heatsink must be soldered to ≥100 mm² of 2 oz copper on the PCB, with thermal vias to internal ground planes. The SM5S17AHE3/2D DO-218AB package relies on this copper area for heat spreading-reducing copper area degrades both pulse rating and long-term reliability.
Does the SM5S17AHE3/2D meet RoHS and lead-free assembly requirements?
Yes, the SM5S17AHE3/2D carries the HE3 suffix, indicating RoHS-compliant construction and compliance with JESD201 Class 2 whisker resistance testing. Its matte tin-plated leads are solderable per J-STD-002 and JESD22-B102, supporting lead-free reflow profiles up to 245 °C peak (MSL Level 1). The SM5S17AHE3/2D is fully compatible with standard Pb-free manufacturing processes.
SM5S17AHE3/2D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 130A
- Power - Peak Pulse:
- 3600W (3.6kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218AB
SM5S17AHE3/2D FAQ
1.How can I place an order for SM5S17AHE3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM5S17AHE3/2D 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 SM5S17AHE3/2D reliable?
The price and inventory of SM5S17AHE3/2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM5S17AHE3/2D is usually 5 days.
3.What payment methods are accepted for SM5S17AHE3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM5S17AHE3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM5S17AHE3/2D?
SM5S17AHE3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM5S17AHE3/2D 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 SM5S17AHE3/2D?
For technical support, including SM5S17AHE3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM5S17AHE3/2D requirements.
6.How does Aetrix verify that SM5S17AHE3/2D is sourced from the original manufacturer or authorized distributors?
All SM5S17AHE3/2D 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 SM5S17AHE3/2D meets industry standards.
7.What is the process for return or replacement of SM5S17AHE3/2D?
All SM5S17AHE3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM5S17AHE3/2D, 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 SM5S17AHE3/2D part is unused and in its original packaging.
Return procedure for SM5S17AHE3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM5S17AHE3/2D Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
