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Vishay General Semiconductor - Diodes Division SM5S58CAHM3/I
- Part No.:
- SM5S58CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM5S58CAHM3/I.pdf
- Description:
- 3600 W BI-DIRECTIONAL TVS IS DO-
- Quantity:
- Payment:
- Shipping:
Inventory:2,915
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Product details
Overview
SM5S58CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for automotive load dump protection. It features a 64.4 V minimum breakdown voltage (VBR), 58.0 V stand-off voltage (VWM), 93.6 V maximum clamping voltage (VC) at 38.5 A peak pulse current, and 3600 W peak pulse power (10/1000 µs). Rated for TJ = 175 °C and AEC-Q101 qualified, it operates in DO-218AC package for high-reliability under-hood electronics.
For engineers reviewing the SM5S58CAHM3/I datasheet, SM5S58CAHM3/I pinout, SM5S58CAHM3/I application, or SM5S58CAHM3/I equivalent, this device is selected for robust transient suppression in 12 V/24 V automotive power networks where ISO 7637-2 and ISO 16750-2 compliance, low leakage (<10 µA at VWM), and halogen-free RoHS-compliant construction are mandatory.
Technical Context
This TVS diode uses an avalanche breakdown mechanism to clamp transients above its VWM threshold while maintaining <10 µA reverse leakage at 58.0 V and 25 °C. Its DO-218AC package provides low thermal resistance (RθJM = 0.45 °C/W) and supports 175 °C junction operation - critical for engine compartment environments.
The device delivers 3600 W peak pulse power under 10/1000 µs waveform and 2400 W under 10/10 000 µs waveform, with clamping performance validated across temperature (–55 °C to +175 °C) and qualified per AEC-Q101 stress tests including high-temperature operating life and temperature cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 64.4 V - ensures reliable triggering above normal 24 V system overvoltage without false conduction |
| VWM | 58.0 V - maximum continuous reverse voltage before significant leakage begins; matches 24 V automotive nominal systems |
| VC @ IPPM | 93.6 V - clamps 10/1000 µs surges to safe levels for downstream 100 V-rated MOSFETs and controllers |
| IPPM | 38.5 A - peak surge current capability sufficient for ISO 7637-2 Pulse 5a (load dump) up to 300 ms duration |
| PPPM (10/1000 µs) | 3600 W - enables single-device protection of main power rails without parallel staging |
| TJ max | 175 °C - supports placement near heat sources (e.g., ECUs, DC/DC converters) without derating penalties |
| Leakage @ VWM | <10 µA - minimizes standby power loss in always-on vehicle modules (e.g., body control units) |
Pinout & Package
SM5S58CAHM3/I is housed in the DO-218AC surface-mount package - a thermally enhanced, bidirectional case with integrated metal heatsink tab (Lead 2) and no polarity marking. The package meets UL 94 V-0, JESD 201 Class 2 whisker resistance, and MSL Level 1 (245 °C reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Anode / Cathode (bidirectional) | Electrically symmetric terminal; no cathode band; interchangeable in PCB layout |
| Lead 2 / Metal Heatsink Tab | Common terminal / Thermal path | Primary thermal interface to PCB copper pour; must be soldered to ≥100 mm² 2 oz. copper for RθJA = 65 °C/W |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use via HTOL, TC, HAST, and ESD testing - eliminates need for additional reliability screening |
| DO-218AC thermal performance | RθJM = 0.45 °C/W enables direct mounting to chassis ground or large copper areas for efficient heat extraction |
| ISO 7637-2 & ISO 16750-2 compliance | Meets Pulse 5a (load dump) and Pulse 4 (jump start) requirements without external filtering components |
| Halogen-free, RoHS-compliant (M3) | Meets automotive material restrictions (ELV, REACH) and supports lead-free assembly with J-STD-002 solderability |
| Bidirectional symmetry | Eliminates orientation constraints during automated placement - reduces SMT programming and inspection overhead |
Applications
| Automotive Load Dump Protection | Engine Control Unit (ECU) Power Input |
|---|---|
Use Scenario: Suppresses 120 V/300 ms transients generated when alternator load is disconnected during engine operation. IC Role / Device Role / Timing Role: Primary clamping device on main 24 V battery rail upstream of DC/DC converter and microcontroller power supply. Use Value: Limits voltage seen by downstream 100 V-rated power MOSFETs and LDOs to ≤93.6 V, preventing catastrophic failure during ISO 7637-2 Pulse 5a events. |
Use Scenario: Protects ECU main power input against jump-start surges (ISO 16750-2 Pulse 4) and alternator ripple-induced spikes. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed immediately after fuse and before bulk capacitance and PMIC input stage. Use Value: Maintains VWM = 58.0 V margin above 24 V nominal, enabling clean power delivery while surviving 100 V/50 ms transients without degradation. |
| Body Control Module (BCM) Power Rail | ADAS Camera Power Supply |
Use Scenario: Shields BCM microcontrollers and CAN transceivers from inductive switching noise and battery line disturbances. IC Role / Device Role / Timing Role: Secondary TVS on 5 V or 3.3 V regulated rail, following primary 24 V rail protection. Use Value: Delivers <10 µA leakage at 58.0 V, ensuring minimal impact on always-on current budget (<100 µA) in sleep mode. |
Use Scenario: Secures 12 V input to image sensor power module in rear-view or surround-view cameras exposed to harsh thermal cycling. IC Role / Device Role / Timing Role: Frontline transient suppressor mounted adjacent to connector entry point on camera PCB. Use Value: Operates reliably at TJ = 175 °C, sustaining clamping performance across –40 °C to +105 °C ambient with no derating required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58A-E3/5A (Vishay) | DO-214AC package; lower PPPM = 400 W; VC = 93.6 V same, but IPPM = 4.3 A only | Not suitable for load dump; limited to low-energy ESD and inductive spikes | Select SMAJ58A-E3/5A only for cost-sensitive non-automotive applications where surge energy ≤400 W |
| TPSMD58CA (Littelfuse) | DO-218AC package; identical VBR/VWM/VC; PPPM = 3600 W; AEC-Q101 qualified; same thermal specs | Drop-in replacement with identical footprint, ratings, and automotive qualification | TPSMD58CA offers identical electrical and mechanical performance - suitable for dual-sourcing with no redesign needed |
Compared with SM5S58CAHM3/I, SMAJ58A-E3/5A lacks automotive qualification and surge capacity for load dump, while TPSMD58CA matches all key parameters and qualifications - making it a verified second-source option for production continuity.
Availability
SM5S58CAHM3/I is available at Aetrix Electronics and suitable for automotive power rail protection, engine control unit hardening, and ADAS camera power conditioning requiring stable component supply across extended temperature and high-reliability environments.
Supply support for SM5S58CAHM3/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, rectifiers, and protection devices for automotive, industrial, and computing markets.
The SM5S series was engineered specifically for AEC-Q101-compliant transient suppression in 12 V/24 V automotive power systems - emphasizing thermal robustness, surge endurance, and zero-polarity assembly.
FAQ
What is the maximum clamping voltage of SM5S58CAHM3/I at its rated peak pulse current?
The SM5S58CAHM3/I has a maximum clamping voltage (VC) of 93.6 V when subjected to its specified peak pulse current (IPPM) of 38.5 A under a 10/1000 µs waveform. This value is measured and guaranteed per the Vishay datasheet (Document Number: 98458), ensuring predictable overvoltage limiting for downstream 100 V-rated components in automotive power circuits. The SM5S58CAHM3/I maintains this clamping performance across its full operating temperature range.
Is SM5S58CAHM3/I suitable for 24 V automotive load dump protection per ISO 7637-2?
Yes, SM5S58CAHM3/I is explicitly designed and tested for ISO 7637-2 Pulse 5a (load dump) protection in 24 V systems. With a 58.0 V stand-off voltage, 64.4 V minimum breakdown, and 3600 W peak pulse power rating, it safely clamps transients up to 120 V for durations up to 300 ms. Its AEC-Q101 qualification and 175 °C junction rating further confirm suitability for under-hood deployment. The SM5S58CAHM3/I meets these requirements without external circuitry.
Does SM5S58CAHM3/I have polarity markings or directional installation requirements?
No, SM5S58CAHM3/I is a bidirectional TVS diode with no cathode band or polarity marking. Its DO-218AC package features symmetric terminals (Lead 1 and Lead 2/metal tab), allowing either orientation during PCB assembly. This eliminates orientation errors in high-speed SMT lines and simplifies layout - the SM5S58CAHM3/I functions identically regardless of anode/cathode placement relative to system ground or supply rail.
What is the thermal resistance specification for SM5S58CAHM3/I, and how does it affect PCB layout?
SM5S58CAHM3/I specifies RθJM = 0.45 °C/W (junction-to-mount) and RθJA = 65 °C/W (junction-to-ambient) on FR-4 with standard pad layout. To achieve the rated 175 °C junction temperature, the metal heatsink tab (Lead 2) must be soldered to ≥100 mm² of 2 oz. copper. Inadequate copper area increases thermal resistance, reducing surge handling capability - proper layout is essential for full SM5S58CAHM3/I performance in sustained high-temperature environments.
How does the HM3 suffix in SM5S58CAHM3/I impact compliance and assembly?
"HM3" denotes halogen-free, RoHS-compliant, AEC-Q101-qualified construction with matte tin-plated leads meeting J-STD-002 solderability and JESD 22-B102 whisker resistance (Class 2). It confirms SM5S58CAHM3/I is approved for automotive production, supports lead-free reflow (245 °C peak), and complies with ELV and REACH material restrictions. The HM3 suffix is integral to SM5S58CAHM3/I's qualification for safety-critical vehicle subsystems.
SM5S58CAHM3/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):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 93.6V
- Current - Peak Pulse (10/1000µs):
- 38.5A
- 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
SM5S58CAHM3/I FAQ
1.How can I place an order for SM5S58CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM5S58CAHM3/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 SM5S58CAHM3/I reliable?
The price and inventory of SM5S58CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM5S58CAHM3/I is usually 5 days.
3.What payment methods are accepted for SM5S58CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM5S58CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM5S58CAHM3/I?
SM5S58CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM5S58CAHM3/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 SM5S58CAHM3/I?
For technical support, including SM5S58CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM5S58CAHM3/I requirements.
6.How does Aetrix verify that SM5S58CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SM5S58CAHM3/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 SM5S58CAHM3/I meets industry standards.
7.What is the process for return or replacement of SM5S58CAHM3/I?
All SM5S58CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM5S58CAHM3/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 SM5S58CAHM3/I part is unused and in its original packaging.
Return procedure for SM5S58CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM5S58CAHM3/I Tags
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