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Vishay General Semiconductor - Diodes Division SM5S13AHM3/I
- Part No.:
- SM5S13AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AC
- Datasheet:
-
SM5S13AHM3/I.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO218AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,925
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Product details
Overview
SM5S13AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor in DO-218AB package, rated for 13 V standoff voltage (VWM), 15.2 V nominal breakdown voltage (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 SM5S13AHM3/I datasheet, SM5S13AHM3/I pinout, SM5S13AHM3/I application, or SM5S13AHM3/I equivalent, key selection criteria include clamping voltage (21.5 V at IPPM), low leakage (<10 μA at VWM), AEC-Q101 qualification, and thermal resistance (RθJM = 0.45 °C/W) under high-temperature automotive operating conditions.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with junction passivation optimized for stable operation up to TJ = 175 °C. Its unidirectional polarity and heatsink-anode configuration enable robust surge handling during ISO 7637-2 load dump transients.
The device delivers 150 A peak pulse current (10/1000 μs) with 21.5 V clamping voltage and exhibits +0.076 %/°C temperature coefficient of VBR-enabling predictable voltage threshold shift across automotive temperature ranges without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13.0 V - Maximum continuous reverse operating voltage before conduction begins; defines safe working range in 12 V automotive systems. |
| VBR (nom) | 15.2 V - Breakdown voltage at 5 mA test current; triggers clamping before downstream IC damage in load dump events. |
| VC @ IPPM | 21.5 V - Clamping voltage at 150 A peak pulse; limits voltage seen by protected circuitry during 3600 W transient. |
| PPPM (10/1000 μs) | 3600 W - Peak pulse power handling capability; meets ISO 7637-2 Pulse 5a requirements for 12 V vehicle systems. |
| TJ max | 175 °C - Maximum junction temperature; supports under-hood placement in engine control modules without derating. |
| RθJM | 0.45 °C/W - Junction-to-mount thermal resistance; enables efficient heat transfer to PCB copper pour or metal heatsink. |
| ID @ VWM | <10 μA - Reverse leakage at 13 V; minimizes standby power loss in always-on automotive subsystems. |
Pinout & Package
Package: DO-218AB - Surface-mount molded case with matte tin-plated leads, UL 94 V-0 flammability rating, and heatsink-integrated anode terminal. Mounting pad layout follows IPC 7351 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink) | Current entry point during clamping | Integrated metal slug serves as primary thermal path and electrical anode; must be connected to system ground plane or heatsink. |
| Cathode | Current exit point during clamping | Leads to protected line (e.g., battery rail); reverse-biased during normal operation, conducts only during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD47; suitable for safety-critical ECUs. |
| MSL Level 1 | Moisture sensitivity level 1 per J-STD-020; allows unlimited floor life and reflow at 245 °C peak without baking. |
| Low VF at high IF | Max 2.0 V forward voltage at 100 A (300 μs pulse); reduces power dissipation during bidirectional surge testing or reverse recovery scenarios. |
| ISO 7637-2 compliance | Validated against load dump transients (Pulse 5a) with exponential waveform; ensures immunity in 12 V vehicle architectures. |
Applications
| Engine Control Unit (ECU) Power Input Protection | Body Control Module (BCM) Battery Rail Protection |
|---|---|
Use Scenario: Protects microcontroller power rails from 12 V battery line transients during alternator load dump events. IC Role / Device Role / Timing Role: Unidirectional TVS clamps voltage spikes above 21.5 V while maintaining <10 μA leakage during normal operation. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic supplies downstream of DC/DC converters in ASIL-B systems. |
Use Scenario: Shields LIN bus transceivers and power management ICs from switching noise and relay-induced surges in door modules. IC Role / Device Role / Timing Role: Fast-response transient suppressor with 150 A peak current capacity absorbs energy from inductive loads (e.g., window motor relays). Use Value: Eliminates need for additional RC snubbers or varistors, reducing BOM count and board space in compact BCM designs. |
| Advanced Driver Assistance Systems (ADAS) Camera Power Supply | Electric Power Steering (EPS) Motor Driver Protection |
Use Scenario: Safeguards image sensor and ISP power inputs against ignition transients and jump-start surges in rear-view cameras. IC Role / Device Role / Timing Role: Standoff voltage of 13 V aligns with 12 V nominal supply; clamps within 10 ns to limit voltage overshoot to ≤21.5 V. Use Value: Maintains uninterrupted video stream during cold-cranking (ISO 16750-2) by preventing reset or brownout of camera SoCs. |
Use Scenario: Protects gate drivers and current sense amplifiers from back-EMF spikes generated by 3-phase brushless EPS motors. IC Role / Device Role / Timing Role: Heatsink-anode configuration enables direct thermal coupling to motor driver PCB copper; handles repetitive 2800 W (10/10,000 μs) surges. Use Value: Extends lifetime of motor control ICs by limiting voltage stress during rapid direction reversal and regenerative braking events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13AHE3/A | DO-214AC package; lower PPPM (400 W); higher RθJA (60 °C/W); same VWM/VBR tolerance. | Limited to low-energy transients; unsuitable for ISO 7637-2 load dump; used in consumer-grade infotainment power rails. | Select SMAJ13AHE3/A only for cost-sensitive non-automotive applications where surge energy is below 500 W. |
| SM5S13AHM3/5B | Same DO-218AB package and electrical specs; differs in packaging format (7" tape vs. 13" tape) and reel orientation (cathode toward sprocket hole). | No functional difference; identical performance and mounting; selected based on SMT line feeder compatibility. | Choose SM5S13AHM3/5B when using 7" diameter tape feeders or requiring cathode-first orientation for vision-based placement verification. |
Compared with SMAJ13AHE3/A and SM5S13AHM3/5B, the SM5S13AHM3/I offers superior thermal performance (RθJM = 0.45 °C/W), higher surge rating (3600 W), and AEC-Q101 qualification-making it the only option qualified for under-hood automotive load dump protection.
Availability
SM5S13AHM3/I is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS camera power supplies requiring stable component supply with automotive-grade traceability and long-term lifecycle support.
Supply support for SM5S13AHM3/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 SM5S series is part of Vishay's PAR® TVS platform designed specifically for high-energy automotive transients-including ISO 7637-2 load dump and ISO 16750-2 jump-start events-with emphasis on thermal robustness and AEC-Q101 compliance.
FAQ
What is the clamping voltage of the SM5S13AHM3/I at its rated peak pulse current?
The SM5S13AHM3/I has a maximum clamping voltage (VC) of 21.5 V at its rated peak pulse current (IPPM) of 150 A with a 10/1000 μs waveform. This value is measured per JEDEC standards and ensures protected circuits remain below critical voltage thresholds during automotive load dump events. The SM5S13AHM3/I maintains this clamping performance across its full operating temperature range from -55 °C to +175 °C.
Is the SM5S13AHM3/I qualified for automotive applications?
Yes, the SM5S13AHM3/I is AEC-Q101 qualified and rated for TJ = 175 °C operation, making it suitable for under-hood automotive applications including engine control units and body control modules. It meets ISO 7637-2 surge requirements and is manufactured with RoHS-compliant, halogen-free materials per Vishay's material categorization standard. The SM5S13AHM3/I carries the "H" grade suffix confirming its automotive qualification status.
What does the "HM3/I" suffix indicate in SM5S13AHM3/I?
The "HM3/I" suffix in SM5S13AHM3/I decodes as follows: "H" denotes AEC-Q101 qualification; "M3" specifies the DO-218AB package with matte tin plating and J-STD-002 solderability; "I" indicates 13-inch diameter plastic tape and reel packaging with anode oriented toward the sprocket hole. This full ordering code ensures correct identification for procurement, assembly, and traceability in automotive production environments.
How does the SM5S13AHM3/I compare to older SM5S13A variants?
The SM5S13AHM3/I replaces legacy SM5S13A versions with enhanced process control, AEC-Q101 qualification, and improved thermal performance (RθJM = 0.45 °C/W). Unlike non-H-grade variants, the SM5S13AHM3/I guarantees automotive reliability and includes MSL Level 1 moisture sensitivity rating. The SM5S13AHM3/I also features tighter VBR tolerance (±5 %) and consistent low-leakage behavior (<10 μA at VWM) across production lots.
Can the SM5S13AHM3/I be used in bidirectional configurations?
No, the SM5S13AHM3/I is unidirectional only, with polarity marked by heatsink-as-anode construction. It cannot suppress positive transients on cathode-connected lines or negative transients on anode-connected lines. For bidirectional protection, two SM5S13AHM3/I devices must be connected in series opposition-or a dedicated bidirectional TVS such as SMBJ13CA should be selected. The SM5S13AHM3/I datasheet explicitly states "Available in unidirectional polarity only."
SM5S13AHM3/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):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 167A
- 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
SM5S13AHM3/I FAQ
1.How can I place an order for SM5S13AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM5S13AHM3/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 SM5S13AHM3/I reliable?
The price and inventory of SM5S13AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM5S13AHM3/I is usually 5 days.
3.What payment methods are accepted for SM5S13AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM5S13AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM5S13AHM3/I?
SM5S13AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM5S13AHM3/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 SM5S13AHM3/I?
For technical support, including SM5S13AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM5S13AHM3/I requirements.
6.How does Aetrix verify that SM5S13AHM3/I is sourced from the original manufacturer or authorized distributors?
All SM5S13AHM3/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 SM5S13AHM3/I meets industry standards.
7.What is the process for return or replacement of SM5S13AHM3/I?
All SM5S13AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM5S13AHM3/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 SM5S13AHM3/I part is unused and in its original packaging.
Return procedure for SM5S13AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM5S13AHM3/I Tags
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