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Vishay General Semiconductor - Diodes Division SM5S13CAHM3/I
- Part No.:
- SM5S13CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM5S13CAHM3/I.pdf
- Description:
- 3600 W BI-DIRECTIONAL TVS IS DO-
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
SM5S13CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount PAR® transient voltage suppressor (TVS) in DO-218AC package, designed for automotive load dump protection with 13.0 V stand-off voltage (VWM), 15.2 V nominal breakdown voltage (VBR), and 21.5 V maximum clamping voltage (VC) at 167 A peak pulse current (IPPM) under 10/1000 µs waveform.
For engineers reviewing the SM5S13CAHM3/I datasheet, SM5S13CAHM3/I pinout, SM5S13CAHM3/I application, or SM5S13CAHM3/I equivalent, this AEC-Q101 qualified TVS delivers 3600 W peak pulse power (10/1000 µs), 175 °C junction temperature capability, and meets ISO 7637-2 and ISO 16750-2 surge standards - critical for high-reliability automotive electronics design and ESD-sensitive system protection.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (14.4–15.9 V), it avalanches to limit transient energy across protected circuitry. Its bidirectional symmetry enables use in AC-coupled or floating bus lines without polarity constraints.
Thermal performance is defined by RθJM = 0.45 °C/W (junction-to-mount) and RθJA = 65 °C/W (junction-to-ambient on FR4), supporting sustained 5 W power dissipation at 25 °C ambient. The DO-218AC package integrates a metal heatsink terminal for low-inductance, high-current surge conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (min/typ/max) | 14.4 / 15.2 / 15.9 V - Voltage range at 5 mA test current where avalanche conduction initiates; ensures consistent turn-on across production lots. |
| VC @ IPPM | 21.5 V at 167 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream ICs. |
| PPPM (10/1000 µs) | 3600 W - Peak transient power handling capacity; supports robust protection against ISO 7637-2 Pulse 5a load dump events. |
| ID @ VWM | 10 µA at 25 °C - Reverse leakage current at stand-off voltage; low value minimizes quiescent power loss in battery-powered systems. |
| TJ max. | 175 °C - Maximum junction temperature rating; enables operation in under-hood automotive environments without derating. |
| Package | DO-218AC - Surface-mount package with integrated metal heatsink terminal (Lead 2); optimized for high-current surge path and thermal transfer. |
Pinout & Package
DO-218AC package features two terminals: Lead 1 (anode/cathode indeterminate due to bidirectionality) and Lead 2 (metal heatsink tab). Polarity is non-applicable - no cathode band marking. Mounting requires soldering both terminals to PCB copper area per IPC 7351 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Anode/Cathode (bidirectional) | Electrically symmetric terminal; connects to protected line (e.g., 12 V rail or signal bus) without polarity orientation. |
| Lead 2 (Metal Heatsink Tab) | Common Surge Return Path | Low-inductance, high-current return path to ground plane; must be soldered to large copper pour for thermal and electrical performance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - required for engine control, body electronics, and ADAS modules. |
| ISO 7637-2 & ISO 16750-2 compliance | Passes standardized automotive transient immunity tests (e.g., Pulse 5a load dump up to 35 V/350 ms), enabling direct integration into OEM power supply designs. |
| MSL Level 1 (245 °C peak reflow) | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements prior to reflow. |
| Halogen-free, RoHS-compliant M3 termination | Matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 whisker resistance Class 2 - ensuring long-term interconnect integrity. |
| 175 °C TJ operation | Enables placement near heat sources (e.g., power converters, motor drivers) without thermal derating, reducing need for remote mounting or heatsinks. |
Applications
| Automotive Load Dump Protection | Industrial Power Supply Clamping |
|---|---|
Use Scenario: Protecting 12 V automotive ECUs from alternator load dump transients (up to 35 V, 400 ms). IC Role / Device Role / Timing Role: Shunt clamping device placed between battery rail and DC/DC input stage. Use Value: Limits voltage to ≤21.5 V during 3600 W surges, preventing damage to downstream regulators and microcontrollers. |
Use Scenario: Safeguarding industrial PLC I/O modules against inductive switching spikes from solenoids and contactors. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp on 24 V DC power inputs. Use Value: Sub-200 ns response time and 167 A IPPM capability suppress >1 kV transients without degradation over 1000+ events. |
| Automotive CAN Bus Transient Suppression | Renewable Energy Charge Controller Protection |
Use Scenario: Shielding high-speed CAN FD transceivers from coupled transients on shared vehicle harnesses. IC Role / Device Role / Timing Role: Bidirectional clamping element across CAN_H/CAN_L differential pair. Use Value: Symmetrical clamping (±21.5 V) preserves signal integrity while meeting ISO 11898-2 EMC immunity requirements. |
Use Scenario: Guarding solar charge controllers against lightning-induced surges on PV input lines. IC Role / Device Role / Timing Role: Primary surge suppression stage before MPPT converter input. Use Value: 2400 W rating (10/10,000 µs) handles long-duration lightning surges common in outdoor installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13CA | DO-214AC (SMA) package; 200 W PPPM (10/1000 µs); lower clamping voltage (21.5 V same), but 5× lower surge capacity. | Suitable for consumer or industrial low-energy transients; not rated for ISO 7637-2 Pulse 5a or AEC-Q101. | Select SMAJ13CA only for cost-sensitive, non-automotive applications with <500 W surge requirements. |
| SMCJ13CA | DO-214AB (SMC) package; 1500 W PPPM (10/1000 µs); same VWM/VBR/VC specs, but lower thermal resistance (RθJA = 25 °C/W) and no AEC-Q101 qualification. | Used in industrial power supplies where automotive qualification is unnecessary but higher surge margin than SMAJ is needed. | Choose SMCJ13CA when board space allows larger SMC package and AEC-Q101 is not mandated. |
Compared with SMAJ13CA and SMCJ13CA, SM5S13CAHM3/I uniquely combines AEC-Q101 qualification, 3600 W surge rating, and DO-218AC's metal-heatsink thermal performance - making it the only option among the three validated for under-hood automotive load dump protection with zero layout compromise.
Availability
SM5S13CAHM3/I is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, and renewable energy systems requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SM5S13CAHM3/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 SM5SxxCA family is engineered specifically for high-energy automotive transient suppression, emphasizing AEC-Q101 compliance, 175 °C operation, and ISO 7637-2 Pulse 5a survivability in compact surface-mount form.
FAQ
What is the clamping voltage of SM5S13CAHM3/I at its rated peak pulse current?
The SM5S13CAHM3/I has a maximum clamping voltage (VC) of 21.5 V at 167 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 4 in the Vishay datasheet (Doc. #98458) and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. Maintaining VC below 22 V ensures compatibility with 24 V-rated automotive ICs and prevents latch-up or overvoltage failure.
Is SM5S13CAHM3/I suitable for bidirectional signal line protection?
Yes, SM5S13CAHM3/I is inherently bidirectional with no polarity marking, making it appropriate for protecting AC-coupled or differential signal lines such as CAN, LIN, or RS-485 buses. Its symmetrical VBR (14.4–15.9 V) and VC (21.5 V) apply equally in both directions, enabling single-device protection without external diode pairing. This eliminates layout complexity and reduces BOM count compared to unidirectional solutions.
Does SM5S13CAHM3/I require a heatsink for 5 W continuous operation?
No external heatsink is required for SM5S13CAHM3/I to dissipate its rated 5 W steady-state power (PD) at TA = 25 °C, provided it is mounted on an FR4 PCB using the recommended minimum pad layout per IPC 7351. The DO-218AC package's metal heatsink terminal (Lead 2) provides sufficient thermal conduction to the PCB copper area. Derating applies above 25 °C ambient per Figure 2 in the datasheet.
What automotive standards does SM5S13CAHM3/I meet?
SM5S13CAHM3/I meets ISO 7637-2 (Pulse 1, 2a, 3a/b, and 5a) and ISO 16750-2 for electrical disturbances from conduction and coupling, verified per the manufacturer's test conditions. It is also AEC-Q101 qualified for stress testing including HTGB, H3TRB, and surge endurance - confirming suitability for front-end power protection in engine control units, body control modules, and ADAS sensors.
How does the HM3 suffix affect SM5S13CAHM3/I's material composition and reliability?
The HM3 suffix indicates halogen-free, RoHS-compliant construction with matte tin-plated leads that pass JESD22-B102 whisker resistance Class 2 and J-STD-002 solderability. This ensures long-term interconnect reliability in high-vibration automotive environments and eliminates risk of tin whisker growth that could cause latent short circuits - a critical requirement for safety-critical vehicle systems.
SM5S13CAHM3/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:
- -
- Bidirectional Channels:
- 1
- 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-218AB
SM5S13CAHM3/I FAQ
1.How can I place an order for SM5S13CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM5S13CAHM3/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 SM5S13CAHM3/I reliable?
The price and inventory of SM5S13CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM5S13CAHM3/I is usually 5 days.
3.What payment methods are accepted for SM5S13CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM5S13CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM5S13CAHM3/I?
SM5S13CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM5S13CAHM3/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 SM5S13CAHM3/I?
For technical support, including SM5S13CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM5S13CAHM3/I requirements.
6.How does Aetrix verify that SM5S13CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SM5S13CAHM3/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 SM5S13CAHM3/I meets industry standards.
7.What is the process for return or replacement of SM5S13CAHM3/I?
All SM5S13CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM5S13CAHM3/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 SM5S13CAHM3/I part is unused and in its original packaging.
Return procedure for SM5S13CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM5S13CAHM3/I Tags
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Diodes Incorporated
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