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Vishay General Semiconductor - Diodes Division SM6S16AHM3/I
- Part No.:
- SM6S16AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AC
- Datasheet:
-
SM6S16AHM3/I.pdf
- Description:
- TVS DIODE 16VWM 26VC DO218AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,492
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Product details
Overview
SM6S16AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in DO-218AB package, rated for 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown (VBR), 4600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive load dump protection.
For engineers reviewing the SM6S16AHM3/I datasheet, SM6S16AHM3/I pinout, SM6S16AHM3/I application, or SM6S16AHM3/I equivalent, this page delivers verified electrical specs, thermal performance at TJ = 175 °C, clamping behavior under surge, and direct alternative part guidance for legacy design continuity.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to deliver low leakage (<10 μA at VWM), low forward voltage drop (≤1.9 V @ 100 A), and stable clamping up to 26.0 V at IPPM. Its junction-to-mount thermal resistance is 0.45 °C/W, enabling high-power transient absorption on metal heatsinks.
Designed specifically for ISO7637-2-compliant automotive load dump suppression, it operates across -55 °C to +175 °C and meets MSL Level 1 with 245 °C reflow peak. Polarity is fixed: anode connected to heatsink, cathode as signal terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16.0 V - Maximum continuous reverse operating voltage before conduction begins; defines system bus tolerance margin. |
| VBR (min/typ/max) | 17.8 / 18.8 / 19.7 V @ 5 mA - Confirmed breakdown threshold range ensures reliable triggering during transients without false trips. |
| VC @ IPPM | 26.0 V - Clamped voltage at 177 A peak pulse current (10/1000 μs); limits downstream IC stress during load dump events. |
| PPPM (10/1000 μs) | 4600 W - Peak surge energy handling capacity; supports harsh automotive ISO7637-2 Pulse 5a/b waveforms. |
| TJ max. | +175 °C - Extended junction temperature rating enables placement near hot engine-control modules without derating. |
| IFSM | 600 A - Non-repetitive forward surge current rating; withstands high-current inrush during fault recovery. |
| Leakage @ VWM | ≤10 μA at 25 °C - Minimal standby power loss and signal integrity impact in always-on automotive circuits. |
Pinout & Package
Package: DO-218AB - Surface-mount molded case with integral metal heatsink (anode), matte tin-plated leads, UL 94 V-0 rated compound, JESD201 Class 2 whisker compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink) | Current return path and thermal interface | Must be soldered to large copper pour or metal chassis for RθJM = 0.45 °C/W; electrically connects to system ground or battery negative. |
| Cathode (Lead 1) | Transient voltage sensing and clamping node | Connected to protected line (e.g., 12 V rail); conducts surge current to anode when V > VBR; defines polarity orientation on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood use per stress test requirements including HTGB, HTRB, and temperature cycling. |
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR over lifetime and reduced parametric drift at high TJ. |
| MSL Level 1 | Rated for 245 °C peak reflow profile without popcorn cracking; no floor life limitation prior to assembly. |
| ISO7637-2 compliance | Validated against Pulse 5a (load dump) waveform; clamps 26.0 V at 177 A, limiting ECU input stress below 30 V. |
| Low VF @ high IF | ≤1.9 V forward drop at 100 A enables efficient crowbar operation during sustained overvoltage faults. |
Applications
| Automotive Load Dump Protection | Engine Control Unit (ECU) Input Protection |
|---|---|
Use Scenario: 12 V battery system subjected to alternator load dump transients up to 40 V for 400 ms. IC Role / Device Role / Timing Role: Primary clamping device placed at ECU power entry point to limit rail voltage excursion. Use Value: Clamps to 26.0 V at 177 A, preventing damage to 30 V-rated DC-DC converters and microcontrollers. |
Use Scenario: Transient suppression on LIN bus power supply rail exposed to switching noise from solenoid drivers. IC Role / Device Role / Timing Role: Standby-mode TVS shunting fast-rising spikes before they propagate into analog sensor front-ends. Use Value: ≤10 μA leakage preserves low-power sleep current; 175 °C rating allows placement near high-temp MCU packages. |
| Body Control Module (BCM) Power Rail | ADAS Camera Power Input |
Use Scenario: 12 V supply to BCM experiencing repeated inductive kickback from window motor relays. IC Role / Device Role / Timing Role: Unidirectional TVS absorbing repetitive 10/1000 μs surges without degradation. Use Value: 4600 W peak power rating sustains >1000 surge events per ISO7637-2; DO-218AB heatsink enables compact layout. |
Use Scenario: Power input of 5 MP automotive camera module exposed to ignition noise and ESD coupling. IC Role / Device Role / Timing Role: First-line defense against combined ESD and load dump; interfaces directly with PMIC input. Use Value: 26.0 V clamping protects 28 V max-rated buck converter; AEC-Q101 status ensures qualification traceability for Tier 1 submission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM6S16AHM3 | No /I suffix; standard tape-and-reel packaging without moisture-sensitive labeling or humidity indicator. | Same electrical and thermal specs; suitable for non-humidity-controlled SMT lines or internal manufacturing. | Select SM6S16AHM3/I only if J-STD-033 compliance and dry-pack labeling are required for long-term storage or high-reliability assembly. |
| SM6S17AHM3/I | Higher VWM (17 V), VBR (18.9–20.9 V), and VC (27.6 V); identical package and surge rating. | Better margin for 13.5 V nominal systems; slightly higher clamping may reduce protection level for 28 V-tolerant ICs. | Choose SM6S16AHM3/I when precise 16 V standoff is needed to avoid false triggering on ripple; SM6S17AHM3/I suits wider tolerance rails. |
Compared with SM6S16AHM3 and SM6S17AHM3/I, the SM6S16AHM3/I provides exact 16 V standoff matching common 12 V automotive architectures, tighter VBR distribution, and documented humidity-safe packaging-critical for production traceability and field reliability in safety-critical modules.
Availability
SM6S16AHM3/I is available at Aetrix Electronics and suitable for automotive load dump protection, engine control unit (ECU) input hardening, and body control module (BCM) power rail stabilization requiring stable component supply and AEC-Q101 traceability.
Supply support for SM6S16AHM3/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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with focus on high-reliability, automotive-grade components meeting AEC-Q101 and industrial standards.
The SM6SxxA family was developed specifically for robust ISO7637-2 load dump suppression in automotive power systems, emphasizing high-temperature operation (TJ = 175 °C), low leakage, and repeatable clamping performance in DO-218AB packaging.
FAQ
What is the clamping voltage of the SM6S16AHM3/I under maximum surge conditions?
The SM6S16AHM3/I clamps to 26.0 V at its rated peak pulse current of 177 A using the 10/1000 μs waveform. This value is measured per JEDEC standards and guarantees downstream circuit protection within safe voltage margins for 28 V-rated automotive ICs. The clamping performance remains stable across -55 °C to +175 °C operating temperatures.
Is the SM6S16AHM3/I suitable for new automotive designs?
No-the SM6S16AHM3/I is marked "Not For New Designs" per Vishay's official documentation, with SM6S10AHM3 through SM6S43AHM3 cited as the recommended alternative series. However, SM6S16AHM3/I remains fully supported for existing production and legacy program continuity with full AEC-Q101 qualification and documented reliability data.
How does the /I suffix affect the SM6S16AHM3/I packaging and handling?
The /I suffix on SM6S16AHM3/I indicates compliance with J-STD-033 moisture sensitivity level (MSL) requirements: it ships in dry-packed, humidity-indicating sealed reels with desiccant, rated for indefinite floor life when unopened. Standard SM6S16AHM3 lacks this labeling and packaging control, though both share identical electrical and thermal specifications.
What is the thermal resistance from junction to mount (RθJM) for the SM6S16AHM3/I?
The SM6S16AHM3/I has a typical junction-to-mount thermal resistance of 0.45 °C/W, measured per JEDEC 51-14 using the Transient Dual Interface Method. This low value is achieved via direct metal heatsink contact and enables effective heat transfer to chassis or copper planes, critical for sustaining repeated 4600 W surges without thermal runaway.
Does the SM6S16AHM3/I meet ISO7637-2 Pulse 5a requirements?
Yes-the SM6S16AHM3/I is validated to meet ISO7637-2 Pulse 5a (load dump) requirements. Its 4600 W peak pulse power rating, 26.0 V clamping voltage at 177 A, and 175 °C junction capability ensure reliable suppression of the 35 V–40 V, 400 ms exponential waveform typical of alternator disconnection events in 12 V vehicle systems.
SM6S16AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AC
- 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):
- 177A
- Power - Peak Pulse:
- 4600W (4.6kW)
- 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-218AC
SM6S16AHM3/I FAQ
1.How can I place an order for SM6S16AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S16AHM3/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 SM6S16AHM3/I reliable?
The price and inventory of SM6S16AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6S16AHM3/I is usually 5 days.
3.What payment methods are accepted for SM6S16AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S16AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S16AHM3/I?
SM6S16AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S16AHM3/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 SM6S16AHM3/I?
For technical support, including SM6S16AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S16AHM3/I requirements.
6.How does Aetrix verify that SM6S16AHM3/I is sourced from the original manufacturer or authorized distributors?
All SM6S16AHM3/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 SM6S16AHM3/I meets industry standards.
7.What is the process for return or replacement of SM6S16AHM3/I?
All SM6S16AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6S16AHM3/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 SM6S16AHM3/I part is unused and in its original packaging.
Return procedure for SM6S16AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6S16AHM3/I Tags
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