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Vishay General Semiconductor - Diodes Division SM5S30AHM3/I
- Part No.:
- SM5S30AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AC
- Datasheet:
-
SM5S30AHM3/I.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO218AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,826
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Product details
Overview
SM5S30AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor in DO-218AB package, rated for 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown (VBR), 3600 W peak pulse power (10/1000 μs), and 175 °C junction temperature - designed for automotive load dump protection in engine control units and body electronics.
For engineers reviewing the SM5S30AHM3/I datasheet, SM5S30AHM3/I pinout, SM5S30AHM3/I application, or SM5S30AHM3/I equivalent, key selection criteria include clamping voltage (48.4 V at IPPM), low leakage (<10 μA at VWM), AEC-Q101 qualification, and thermal resistance (RθJM = 0.45 °C/W) under high-reliability automotive conditions.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with junction passivation optimized for stable operation up to TJ = 175 °C. Its unidirectional polarity and heatsink-anode configuration enable direct mounting to metal chassis for enhanced thermal dissipation in automotive power rails.
The device meets ISO 7637-2 surge requirements for load dump transients and complies with MSL Level 1 (245 °C reflow). Its 55 °C/W junction-to-ambient thermal resistance assumes JEDEC 51-2A mounting on FR4 with standard footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 33.3 V / 36.8 V at 5 mA - ensures reliable turn-on during transients while avoiding false triggering |
| VC @ IPPM | 48.4 V - clamping voltage limits downstream IC stress during 3600 W surges |
| PPPM (10/1000 μs) | 3600 W - sustains high-energy automotive load dump pulses without failure |
| TJ max | 175 °C - supports under-hood operation in AEC-Q101-compliant automotive modules |
| RθJM | 0.45 °C/W - enables efficient heat transfer from junction to heatsink in DO-218AB package |
| ID @ VWM | <10 μA at 25 °C - minimizes standby power loss in always-on vehicle systems |
Pinout & Package
Package: DO-218AB - molded surface-mount case with metal heatsink terminal (anode) and lead terminal (cathode); UL 94 V-0 rated; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink) | High-current return path and thermal interface | Must be soldered to copper pour or metal chassis for RθJM = 0.45 °C/W performance |
| Cathode (Lead 1) | Transient current input node | Connected to protected line (e.g., battery rail); clamps to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD47 |
| Junction passivation | Reduces surface leakage and improves long-term stability at 175 °C junction temperature |
| ISO 7637-2 compliance | Withstands load dump pulses up to 30 V superimposed on 14 V nominal system voltage |
| MSL Level 1 rating | Allows single-reflow assembly at 245 °C peak without moisture-induced damage |
| Low VF at high IF | ≤2.0 V forward drop at 100 A (300 μs pulse) - reduces conduction loss during bidirectional fault events |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Rail |
|---|---|
Use Scenario: Protects microcontroller and CAN transceivers from 12 V battery line transients during alternator load dump. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery rail and DC-DC input stage. Use Value: Limits clamped voltage to 48.4 V, staying below 50 V absolute maximum rating of typical automotive PMICs. |
Use Scenario: Shields LIN transceivers and power window drivers from switching noise and jump-start surges. IC Role / Device Role / Timing Role: Primary overvoltage suppression device on fused 12 V supply branch. Use Value: 3600 W surge rating handles 10 ms exponential load dump waveforms per ISO 7637-2 Pulse 5a. |
| Advanced Driver Assistance Systems (ADAS) Camera Module | Electric Power Steering (EPS) Motor Driver |
Use Scenario: Safeguards image sensor and serializer ICs against ignition coil coupling and ESD in front-end camera harnesses. IC Role / Device Role / Timing Role: Secondary protection stage after fuse and upstream common-mode choke. Use Value: 10 μA max reverse leakage at 30 V prevents signal integrity degradation in always-on imaging circuits. |
Use Scenario: Absorbs inductive kickback from H-bridge MOSFETs during motor commutation and emergency stop. IC Role / Device Role / Timing Role: Parallel clamp across motor supply rail, referenced to chassis ground via heatsink. Use Value: 0.45 °C/W junction-to-mount thermal resistance enables sustained 5 W dissipation without derating in compact EPS enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30AHE3/A | DO-214AC package; lower PPPM (400 W); VBR 33.3–36.7 V; RθJA = 60 °C/W | Not rated for 175 °C operation; lacks AEC-Q101 qualification; suitable only for industrial/commercial use | Select when cost sensitivity outweighs automotive reliability requirements and surge energy is ≤400 W |
| SM5S33AHM3/I | Higher VWM (33 V); VBR 36.7–40.6 V; same DO-218AB package and 3600 W rating | Better margin for 24 V systems; clamps at 53.3 V - exceeds 50 V PMIC limits in some 12 V designs | Choose for 24 V commercial vehicles or dual-voltage platforms where 33 V stand-off avoids nuisance tripping |
Compared with SMAJ30AHE3/A and SM5S33AHM3/I, the SM5S30AHM3/I uniquely balances 12 V automotive compatibility, AEC-Q101 qualification, and 3600 W surge handling in a thermally optimized DO-218AB package - making it the preferred choice for new 12 V ECU and BCM designs requiring production-grade robustness.
Availability
SM5S30AHM3/I is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and ADAS camera power supplies requiring stable component supply across extended product lifecycles.
Supply support for SM5S30AHM3/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 was engineered specifically for automotive load dump protection, combining high-temperature capability (175 °C), AEC-Q101 qualification, and industry-leading 3600 W surge rating in the DO-218AB package.
FAQ
What is the maximum clamping voltage of SM5S30AHM3/I at its rated peak pulse current?
The SM5S30AHM3/I has a maximum clamping voltage (VC) of 48.4 V when subjected to its peak pulse current (IPPM) under the 10/1000 μs waveform. This value is measured at the specified test condition and ensures protected downstream circuitry remains within safe voltage limits during high-energy transients such as automotive load dump events. The SM5S30AHM3/I maintains this clamping performance across its full operating temperature range.
Is SM5S30AHM3/I qualified for automotive applications?
Yes, the SM5S30AHM3/I is AEC-Q101 qualified and explicitly designed for automotive use. It meets ISO 7637-2 surge requirements for load dump protection and operates reliably from –55 °C to +175 °C. Its DO-218AB package features matte tin-plated leads compliant with J-STD-002 and passes JESD 201 Class 2 whisker testing - all confirmed in Vishay's official qualification report for SM5S30AHM3/I.
What does the "HM3" suffix indicate in SM5S30AHM3/I?
The "HM3" suffix in SM5S30AHM3/I denotes AEC-Q101 qualification ("H") and RoHS-compliant, halogen-free construction ("M3", equivalent to "E3" per Vishay's ordering nomenclature). The "I" indicates packaging in 13-inch plastic tape and reel with anode orientation toward sprocket holes - a standard configuration for automated SMT placement. This full suffix confirms SM5S30AHM3/I meets automotive-grade material and assembly requirements.
Can SM5S30AHM3/I replace SM5S30A in existing designs?
Yes, SM5S30AHM3/I is a direct replacement for SM5S30A with identical electrical specifications, DO-218AB mechanical outline, and pinout. The "HM3/I" version adds AEC-Q101 qualification, MSL Level 1 rating, and RoHS/halogen-free compliance - enhancements that do not affect board layout or electrical behavior. No PCB changes are required when upgrading from SM5S30A to SM5S30AHM3/I.
What is the thermal resistance from junction to mount (RθJM) for SM5S30AHM3/I?
The SM5S30AHM3/I has a typical junction-to-mount thermal resistance (RθJM) of 0.45 °C/W, measured using the Transient Dual Interface Method (JEDEC 51-14). This low value is achieved through direct thermal coupling between the internal die and the exposed metal heatsink (anode) terminal. Effective heat sinking to a large copper area or chassis is required to realize this performance in actual SM5S30AHM3/I applications.
SM5S30AHM3/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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 74A
- 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-218AC
SM5S30AHM3/I FAQ
1.How can I place an order for SM5S30AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM5S30AHM3/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 SM5S30AHM3/I reliable?
The price and inventory of SM5S30AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM5S30AHM3/I is usually 5 days.
3.What payment methods are accepted for SM5S30AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM5S30AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM5S30AHM3/I?
SM5S30AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM5S30AHM3/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 SM5S30AHM3/I?
For technical support, including SM5S30AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM5S30AHM3/I requirements.
6.How does Aetrix verify that SM5S30AHM3/I is sourced from the original manufacturer or authorized distributors?
All SM5S30AHM3/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 SM5S30AHM3/I meets industry standards.
7.What is the process for return or replacement of SM5S30AHM3/I?
All SM5S30AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM5S30AHM3/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 SM5S30AHM3/I part is unused and in its original packaging.
Return procedure for SM5S30AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM5S30AHM3/I Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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