My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM5S15HE3/2D
- Part No.:
- SM5S15HE3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM5S15HE3/2D.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,425
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM5S15HE3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor diode designed for automotive load dump protection. It features a 15.0 V stand-off voltage (VWM), 16.7–20.4 V breakdown range (VBR), 26.9 V clamping voltage at 134 A peak pulse current, 3600 W peak pulse power (10/1000 µs), and operates up to TJ = 175 °C.
For engineers reviewing the SM5S15HE3/2D datasheet, SM5S15HE3/2D pinout, SM5S15HE3/2D application, or SM5S15HE3/2D equivalent, this device is selected for high-reliability 12 V automotive power rail protection where low leakage (<10 µA at VWM), low forward voltage drop (<2.0 V @ 100 A), and AEC-Q101 qualification are mandatory.
Technical Context
The SM5S15HE3/2D employs passivated anisotropic rectifier technology optimized for junction stability under thermal stress. Its DO-218AB package integrates a metal heatsink as anode terminal, enabling direct thermal coupling to PCB copper for sustained 5 W power dissipation at TC = 25 °C and robust 500 A IFSM surge handling.
It meets ISO 7637-2 load dump surge requirements with exponential waveform capability (10 ms), supports MSL Level 1 reflow (245 °C peak), and delivers stable reverse leakage ≤10 µA at VWM across -55 °C to +175 °C operating range - critical for engine bay electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15.0 V - Maximum continuous reverse operating voltage before conduction begins; sets system overvoltage trip threshold for 12 V nominal automotive rails. |
| VBR (min/max) | 16.7 V / 20.4 V - Breakdown occurs within this range at 5 mA test current; ensures predictable turn-on during transients without premature clamping. |
| VC @ IPPM | 26.9 V - Clamping voltage measured at 134 A (10/1000 µs); defines worst-case voltage seen by protected downstream ICs during surge events. |
| PPPM (10/1000 µs) | 3600 W - Peak pulse power handling capacity; enables suppression of high-energy load dump spikes without failure. |
| TJ max. | +175 °C - Maximum junction temperature rating; qualifies for under-hood placement in modern automotive ECUs and body control modules. |
| Polarity | Unidirectional - Anode connected to ground, cathode to protected line; blocks reverse voltage but conducts forward surges to ground. |
| RθJC | 1.0 °C/W - Low junction-to-case thermal resistance; allows efficient heat transfer to heatsink or PCB copper, supporting sustained power derating. |
Pinout & Package
Package: DO-218AB - Surface-mount plastic case with integral metal heatsink (anode terminal), UL 94 V-0 rated molding compound, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 (cathode) | Surge input / protected line connection | Connected to 12 V rail or sensitive node; carries transient current into device during clamping. |
| Lead 2 / Metal Heatsink (anode) | Ground reference / thermal path | Electrically and thermally tied to system ground plane; serves as primary heat dissipation interface and circuit return path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - required for ECU, BCM, and ADAS module qualification. |
| Junction passivation | Optimized anisotropic rectifier structure minimizes parameter drift over lifetime and improves stability at TJ = 175 °C. |
| Low leakage ID | ≤10 µA at VWM (25 °C) and ≤150 µA at VWM (175 °C) - prevents excessive quiescent current drain in always-on vehicle systems. |
| High surge capability | 500 A IFSM (8.3 ms half-sine) and 134 A IPPM (10/1000 µs) - withstands repeated load dump and jump-start events without degradation. |
| MSL Level 1 | Rated for reflow up to 245 °C peak per J-STD-020 - eliminates moisture sensitivity concerns during standard SMT assembly. |
Applications
| Engine Control Unit (ECU) Power Protection | Body Control Module (BCM) Input Protection |
|---|---|
Use Scenario: Protects microcontroller power supply inputs against 12 V battery line transients caused by alternator load dump and relay switching. IC Role / Device Role / Timing Role: Unidirectional TVS diode clamping overvoltage on VDD rail to safe levels during >100 V, 400 ms load dump events. Use Value: Limits clamped voltage to 26.9 V, ensuring downstream 3.3 V/5 V regulators and MCUs remain within absolute maximum ratings. |
Use Scenario: Shields LIN bus transceivers and power management ICs from reverse battery connection and jump-start surges. IC Role / Device Role / Timing Role: Fast-response transient suppressor placed at BCM main 12 V input, conducting surge energy to chassis ground. Use Value: Withstands 500 A single-pulse surge (8.3 ms) and maintains <2.0 V forward drop, minimizing voltage sag during fault conditions. |
| Advanced Driver Assistance Systems (ADAS) Camera Power Rail | Electric Power Steering (EPS) Motor Driver Protection |
Use Scenario: Secures image sensor and ISP power supplies in front-facing cameras exposed to under-hood thermal and electrical stress. IC Role / Device Role / Timing Role: High-temperature-stable TVS mounted near camera module connector to clamp fast-rising ignition noise and ESD. Use Value: Operates reliably at TJ = 175 °C and exhibits <10 µA leakage at 15 V, preserving low-power sleep mode integrity. |
Use Scenario: Guards gate drivers and current sense amplifiers in EPS motor control units from inductive kickback during MOSFET switching. IC Role / Device Role / Timing Role: Unidirectional suppressor placed across motor phase inputs to absorb back-EMF energy during PWM commutation. Use Value: Delivers 3600 W peak pulse power handling and 1.0 °C/W RθJC, enabling effective thermal management without external heatsinks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/5A (Vishay) | DO-214AC package; lower PPPM (400 W), higher VBR (16.7–18.5 V), same VWM (15 V) | Designed for general-purpose board-level protection; lacks AEC-Q101 qualification and 175 °C rating | Select when cost-sensitive non-automotive designs require basic 15 V clamping without high-temp or automotive compliance. |
| TPSMD15A (Texas Instruments) | DO-218AB package; identical VWM (15 V), slightly higher VC (27.6 V @ 130 A), AEC-Q101 qualified | Same mechanical footprint and thermal performance; differs in leakage spec (≤5 µA @ 25 °C vs. ≤10 µA) | Choose for TI-design ecosystems requiring compatible SPICE models and automotive documentation traceability. |
Compared with SMAJ15A-E3/5A and TPSMD15A, the SM5S15HE3/2D offers superior surge robustness (3600 W vs. 400 W / 3000 W), tighter thermal design margin (RθJC = 1.0 °C/W), and guaranteed 175 °C operation - making it the preferred choice for high-reliability automotive power rail protection where sustained thermal stress and repetitive load dump events are expected.
Availability
SM5S15HE3/2D is available at Aetrix Electronics and suitable for automotive electronic control units, body control modules, and advanced driver assistance systems requiring stable component supply, AEC-Q101 compliance, and high-temperature surge resilience.
Supply support for SM5S15HE3/2D 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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and automotive-grade performance.
The SM5S series is part of Vishay's PAR® (Power Application Rated) transient voltage suppressor family, engineered specifically for harsh-environment automotive power rail protection with focus on load dump immunity, high-temperature stability, and long-term parametric consistency.
FAQ
What is the clamping voltage of the SM5S15HE3/2D at its rated peak pulse current?
The SM5S15HE3/2D has a maximum clamping voltage (VC) of 26.9 V when subjected to its specified peak pulse current of 134 A using the 10/1000 µs waveform. This value is measured per the test conditions defined in the Vishay datasheet document 88382 and represents the worst-case voltage imposed on protected circuitry during a standardized surge event. The SM5S15HE3/2D maintains this clamping performance across its full operating temperature range.
Is the SM5S15HE3/2D qualified for automotive applications?
Yes, the SM5S15HE3/2D is AEC-Q101 qualified and explicitly designed for automotive use. It meets ISO 7637-2 load dump surge requirements, operates up to TJ = 175 °C, and is rated for MSL Level 1 reflow. These qualifications are confirmed in the Vishay datasheet revision 22-Jul-16 (document 88382), and the HE3 suffix denotes RoHS compliance and AEC-Q101 qualification. The SM5S15HE3/2D is intended for deployment in ECUs, BCMs, and ADAS modules.
What package type does the SM5S15HE3/2D use, and how is polarity oriented?
The SM5S15HE3/2D uses the DO-218AB surface-mount package with an integrated metal heatsink. Polarity is unidirectional: the metal heatsink (Lead 2) is the anode and must be connected to system ground, while Lead 1 is the cathode and connects to the protected line. This configuration is clearly indicated in the mechanical drawings and "Polarity: heatsink is anode" note in the Vishay datasheet. The SM5S15HE3/2D requires correct orientation during placement to function as intended.
How does the SM5S15HE3/2D handle high-temperature operation?
The SM5S15HE3/2D is rated for continuous operation from -55 °C to +175 °C junction temperature and maintains key parameters across this range - including ≤150 µA reverse leakage at VWM and stable clamping behavior. Its passivated anisotropic rectifier technology and low RθJC (1.0 °C/W) enable reliable thermal management in under-hood environments. The SM5S15HE3/2D data sheet specifies derating curves confirming usable power dissipation even at elevated case temperatures.
What is the surge current rating of the SM5S15HE3/2D for different pulse waveforms?
The SM5S15HE3/2D supports 134 A peak pulse current (IPPM) with the 10/1000 µs waveform and 118 A with the longer 10/10,000 µs waveform. It also withstands 500 A non-repetitive forward surge current (IFSM) for an 8.3 ms half-sine wave - critical for jump-start and load dump events. These values are specified in the "Maximum Ratings" table of the Vishay SM5S15HE3/2D datasheet and validated per AEC-Q101 stress testing protocols.
SM5S15HE3/2D 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 26.9V
- Current - Peak Pulse (10/1000µs):
- 134A
- 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
SM5S15HE3/2D FAQ
1.How can I place an order for SM5S15HE3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM5S15HE3/2D 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 SM5S15HE3/2D reliable?
The price and inventory of SM5S15HE3/2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM5S15HE3/2D is usually 5 days.
3.What payment methods are accepted for SM5S15HE3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM5S15HE3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM5S15HE3/2D?
SM5S15HE3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM5S15HE3/2D 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 SM5S15HE3/2D?
For technical support, including SM5S15HE3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM5S15HE3/2D requirements.
6.How does Aetrix verify that SM5S15HE3/2D is sourced from the original manufacturer or authorized distributors?
All SM5S15HE3/2D 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 SM5S15HE3/2D meets industry standards.
7.What is the process for return or replacement of SM5S15HE3/2D?
All SM5S15HE3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM5S15HE3/2D, 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 SM5S15HE3/2D part is unused and in its original packaging.
Return procedure for SM5S15HE3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM5S15HE3/2D 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 …
