My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM5S16AHE3_A/I
- Part No.:
- SM5S16AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM5S16AHE3_A/I.pdf
- Description:
- TVS DIODE 16VWM 26VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,865
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM5S16AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for automotive load dump protection. It features a 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown range (VBR), 3600 W peak pulse power (10/1000 μs), 138 V clamping voltage at 150 A, and AEC-Q101 qualification for under-hood automotive electronics.
For engineers reviewing the SM5S16AHE3_A/I datasheet, SM5S16AHE3_A/I pinout, SM5S16AHE3_A/I application, or SM5S16AHE3_A/I equivalent, key selection criteria include its DO-218AB package thermal performance (RθJM = 0.45 °C/W), 175 °C junction rating, unidirectional polarity with heatsink-as-anode configuration, and ISO7637-2 compliance for load dump transients.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver high-temperature stability up to TJ = 175 °C and low leakage (<10 μA at VWM). Its DO-218AB case enables direct metal heatsink mounting-critical for sustained surge handling in 12 V automotive systems.
The device operates exclusively in unidirectional mode with cathode/anode terminals defined by physical heatsink polarity. Clamping behavior is characterized at 150 A IPPM (10/1000 μs), yielding VC = 138 V, and exhibits +0.081 %/°C temperature coefficient of VBR for predictable voltage drift across operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before conduction begins; sets system-level overvoltage trip threshold. |
| VBR (min/typ/max) | 17.8 / 18.8 / 19.7 V - Breakdown voltage range at 5 mA test current; defines precise clamping onset under transient stress. |
| VC @ IPPM | 138 V at 150 A - Clamping voltage during 10/1000 μs surge; determines maximum voltage seen by protected downstream ICs. |
| PPPM (10/1000 μs) | 3600 W - Peak pulse power handling capability; supports high-energy load dump events per ISO7637-2. |
| TJ max. | 175 °C - Maximum junction temperature; enables placement near hot engine compartments without derating. |
| RθJM | 0.45 °C/W - Junction-to-mount thermal resistance; confirms efficient heat transfer to PCB copper or external heatsink. |
| Polarity | Unidirectional - Anode connected to heatsink; requires correct orientation in PCB layout to avoid reverse-bias failure. |
Pinout & Package
Package: DO-218AB - Surface-mount, thermally enhanced case with integral metal heatsink; anode terminal is the metal base/heatsink, cathode is lead 1. Meets UL 94 V-0, MSL Level 1, and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Metal Heatsink) | Positive reference terminal | Must be soldered to large copper pour or external heatsink; serves as primary thermal path and circuit ground reference in unidirectional configuration. |
| Cathode (Lead 1) | Transient current return path | Connected to protected line (e.g., battery rail); conducts surge current from line to anode/heatsink during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance-required for OEM powertrain and body control modules. |
| Junction passivation | Optimized die surface treatment prevents moisture-induced degradation and leakage increase under high-humidity under-hood conditions. |
| Low VF at high IF | Max 2.0 V forward drop at 100 A (300 μs pulse); minimizes conduction loss during bidirectional fault events like jump-starting. |
| ISO7637-2 compliance | Validated against Pulse 5a/b load dump waveforms; ensures robustness against alternator-induced surges up to 35 V for 400 ms. |
| MSL Level 1 | Reflow-safe up to 245 °C peak; eliminates pre-bake requirements and supports standard SMT assembly processes. |
Applications
| Automotive Load Dump Protection | 12 V Power Rail Surge Suppression |
|---|---|
Use Scenario: Protecting engine control unit (ECU) power input from alternator load dump transients during battery disconnect. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and ECU input capacitor. Use Value: Limits transient voltage to ≤138 V at 150 A, preventing damage to 16 V-rated DC-DC converters and microcontrollers. |
Use Scenario: Safeguarding infotainment head unit power supply against ignition-switching induced spikes. IC Role / Device Role / Timing Role: Primary overvoltage suppression element on main 12 V input, upstream of PMIC. Use Value: Withstands 3600 W pulses and maintains <10 μA leakage at 16 V, preserving standby current budget. |
| Body Control Module (BCM) Input Protection | Telematics Unit Battery Interface |
Use Scenario: Securing door module power input against inductive kickback from window motor drivers. IC Role / Device Role / Timing Role: Fast-response transient suppressor on fused 12 V feed to BCM microcontroller. Use Value: 175 °C operation allows placement near motor driver ICs; 0.45 °C/W RθJM ensures stable clamping under repeated surges. |
Use Scenario: Shielding LTE modem power input from vehicle battery fluctuations during cold-cranking. IC Role / Device Role / Timing Role: Standoff-rated TVS on always-on VBAT line, co-located with input filter capacitor. Use Value: 16 V VWM aligns with modem's minimum operating voltage; unidirectional polarity avoids reverse leakage into backup supercapacitor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM5S16AHM3_A/I | Same electrical specs, but HM3 suffix indicates halogen-free, matte tin termination, and updated MSL Level 1 reflow profile (260 °C). | Preferred for new designs targeting RoHS+REACH compliance and higher reflow margin; not drop-in due to revised thermal profile. | Select when upgrading legacy designs or requiring full halogen-free certification. |
| SMAJ16A | Lower PPPM (400 W), DO-214AC package, RθJA = 40 °C/W, no AEC-Q101 qualification. | Limited to non-automotive industrial or consumer applications; insufficient for ISO7637-2 load dump. | Use only in cost-sensitive, non-automotive 12 V systems with lower surge energy requirements. |
Compared with SM5S16AHE3_A/I, SM5S16AHM3_A/I offers identical protection performance with enhanced process compliance, while SMAJ16A trades surge capacity and qualification for lower cost and smaller footprint-making it unsuitable for automotive deployment.
Availability
SM5S16AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, body control modules, and telematics systems requiring stable component supply under AEC-Q101-compliant sourcing.
Supply support for SM5S16AHE3_A/I 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 passive components for automotive, industrial, and computing markets.
The SM5SxxA family delivers high-power transient suppression in thermally optimized DO-218AB packages, engineered specifically for automotive load dump and ISO7637-2 compliance in 12 V systems.
FAQ
What is the maximum clamping voltage of the SM5S16AHE3_A/I at rated surge current?
The SM5S16AHE3_A/I clamps to 138 V at its rated peak pulse current of 150 A under a 10/1000 μs waveform. This value is measured and guaranteed per the Vishay datasheet (Document Number 88382, page 2), and defines the upper voltage limit imposed on protected circuitry during transient events.
Is the SM5S16AHE3_A/I suitable for new automotive designs?
No-the Vishay datasheet explicitly states "Not For New Designs" for the SM5S10A–SM5S36A series, recommending SM5S10AHM3–SM5S85AHM3 as alternatives. The SM5S16AHE3_A/I remains available for legacy program support but lacks the updated halogen-free and reflow profile enhancements of the HM3 variant.
How is polarity configured on the SM5S16AHE3_A/I DO-218AB package?
The SM5S16AHE3_A/I uses unidirectional polarity with the metal heatsink serving as the anode and lead 1 as the cathode. This configuration requires the heatsink to be connected to the system ground or lower-potential node, and incorrect orientation will prevent proper clamping during overvoltage events.
What thermal metrics confirm the SM5S16AHE3_A/I's suitability for under-hood placement?
The SM5S16AHE3_A/I is rated for TJ = 175 °C operation and has RθJM = 0.45 °C/W, enabling effective heat transfer from junction to mounted surface. These values-verified in Vishay's thermal characterization (Document 88382, page 3)-support reliable operation in high-ambient environments such as engine compartments.
Does the SM5S16AHE3_A/I meet ISO7637-2 requirements?
Yes-the SM5S16AHE3_A/I is specified to meet ISO7637-2 surge requirements, particularly Pulse 5a/b (load dump), as noted in the "FEATURES" section of the Vishay datasheet. Performance validation is conditional on proper PCB layout, heatsink attachment, and compliance with test setup parameters defined in the standard.
SM5S16AHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 138A
- 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
SM5S16AHE3_A/I FAQ
1.How can I place an order for SM5S16AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM5S16AHE3_A/I 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 SM5S16AHE3_A/I reliable?
The price and inventory of SM5S16AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM5S16AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SM5S16AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM5S16AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM5S16AHE3_A/I?
SM5S16AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM5S16AHE3_A/I 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 SM5S16AHE3_A/I?
For technical support, including SM5S16AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM5S16AHE3_A/I requirements.
6.How does Aetrix verify that SM5S16AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SM5S16AHE3_A/I 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 SM5S16AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SM5S16AHE3_A/I?
All SM5S16AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM5S16AHE3_A/I, 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 SM5S16AHE3_A/I part is unused and in its original packaging.
Return procedure for SM5S16AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM5S16AHE3_A/I 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 …
