My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM8S13CAHM3/I
- Part No.:
- SM8S13CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM8S13CAHM3/I.pdf
- Description:
- 6600 W BI-DIRECTIONAL TVS IS DO-
- Quantity:
- Payment:
- Shipping:
Inventory:2,950
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM8S13CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount PAR® transient voltage suppressor (TVS) in DO-218AC package, with 13 V standoff voltage (VWM), 15.2 V nominal breakdown voltage (VBR), and 6600 W peak pulse power (10/1000 μs). It delivers 307 A peak pulse current and clamps to 21.5 V at rated surge, meeting AEC-Q101 qualification for automotive load dump protection.
For engineers reviewing the SM8S13CAHM3/I datasheet, SM8S13CAHM3/I pinout, SM8S13CAHM3/I application, or SM8S13CAHM3/I equivalent, this device is selected for high-reliability 12 V automotive power rail protection where TJ = 175 °C operation, ISO 7637-2 compliance, low leakage (<10 μA at VWM), and MSL Level 1 handling are mandatory design requirements.
Technical Context
This TVS diode operates as a bidirectional clamping device across power rails, triggered when transient voltage exceeds its breakdown threshold. Its DO-218AC package integrates a metal heatsink terminal for low thermal resistance (RθJM = 0.35 °C/W) and supports high surge energy absorption without polarity marking.
The SM8S13CAHM3/I is characterized for 10/1000 μs and 10/10 000 μs waveforms, with derated peak power above TA = 25 °C and guaranteed performance up to TJ = 175 °C. It meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC operating margin on 12 V automotive systems. |
| VBR (nom) | 15.2 V - Voltage at 5 mA test current; ensures reliable turn-on before downstream IC damage thresholds. |
| VC @ IPPM | 21.5 V - Clamped voltage at 307 A peak pulse; limits stress on protected circuitry during load dump events. |
| PPPM (10/1000 μs) | 6600 W - Surge power handling capability; enables single-device protection against ISO 7637-2 Pulse 5a (load dump). |
| TJ max | +175 °C - Maximum junction temperature; supports under-hood placement in modern automotive ECUs. |
| Leakage @ VWM | <10 μA at 25 °C - Minimal standby current draw; preserves battery life in always-on vehicle modules. |
| MSL Level | Level 1 (245 °C peak reflow) - Enables standard SMT assembly without moisture sensitivity concerns. |
Pinout & Package
Package: DO-218AC - Surface-mount, bidirectional TVS with integrated metal heatsink terminal (Lead 2), matte tin-plated leads, halogen-free and RoHS-compliant molding compound (UL 94 V-0).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Anode / Cathode (bidirectional) | No polarity marking required; symmetric conduction allows placement without orientation check. |
| Lead 2 / Metal Heatsink | Common terminal / Thermal path | Direct thermal interface to PCB copper pour; enables efficient heat dissipation during repetitive surges. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards. |
| ISO 7637-2 compliant | Withstands load dump transients up to 65 V for 400 ms (Pulse 5a), enabling direct integration into 12 V power distribution networks. |
| RθJM = 0.35 °C/W | Enables >8 W steady-state power dissipation with minimal junction-to-mount temperature rise, supporting high-duty-cycle protection schemes. |
| DO-218AC mechanical robustness | Meets JESD22-B102 solderability and JESD201 Class 2 whisker resistance, ensuring long-term interconnect integrity in vibration-prone environments. |
Applications
| Automotive Body Control Module (BCM) | Engine Control Unit (ECU) Power Input |
|---|---|
Use Scenario: Protecting microcontroller power rails from alternator load dump spikes during battery disconnect events. IC Role / Device Role: Primary clamping TVS on main 12 V input, placed upstream of DC/DC converters and LDOs. Use Value: Limits transient voltage to ≤21.5 V, preventing latch-up or permanent damage to 3.3 V/5 V logic supplies downstream. | Use Scenario: Safeguarding CAN transceiver VCC pins against coupled transients from adjacent high-current solenoid drivers. IC Role / Device Role: Localized rail clamp adjacent to sensitive interface ICs, minimizing trace inductance impact. Use Value: Achieves sub-100 ns response time and <10 μA leakage, preserving signal integrity and sleep-mode current budgets. |
| ADAS Camera Power Supply | Electric Power Steering (EPS) Motor Driver |
Use Scenario: Shielding image sensor and ISP power inputs from ignition-induced transients in front-end camera modules. IC Role / Device Role: Secondary overvoltage clamp after primary fuse and LC filter, targeting fast-rising ESD-like events. Use Value: Delivers 307 A surge capacity with 21.5 V clamping, maintaining clean 5 V supply for pixel data transmission. | Use Scenario: Suppressing inductive kickback from H-bridge MOSFET switching in 12 V EPS motor control circuits. IC Role / Device Role: Bidirectional clamp across motor phase terminals and supply rails to absorb regenerative energy. Use Value: Handles repeated 10/1000 μs surges up to 6600 W without degradation, supporting ASIL-B functional safety requirements. |
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 | Lower PPPM (400 W vs. 6600 W); SMA package (DO-214AC); RθJA ≈ 50 °C/W vs. 55 °C/W. | Not suitable for load dump; limited to ESD and low-energy transients in consumer electronics. | Select only for non-automotive, low-surge applications where board space is constrained and 13 V clamping is required. |
| TPSMD13CA | Same DO-218AC package; 6600 W rating; but VBR min = 14.4 V (vs. 14.4 V), VC = 22.0 V (vs. 21.5 V); no AEC-Q101 documentation confirmed. | Lacks formal AEC-Q101 qualification evidence; may require additional qualification for automotive production use. | Consider only if AEC-Q101 is not mandated and minor clamping voltage increase is acceptable. |
Compared with SMAJ13CA and TPSMD13CA, the SM8S13CAHM3/I uniquely combines AEC-Q101 qualification, 6600 W surge rating in DO-218AC, and 21.5 V clamping-making it the only option validated for under-hood automotive load dump protection without derating or parallel devices.
Availability
SM8S13CAHM3/I is available at Aetrix Electronics and suitable for automotive body control modules, engine control units, ADAS camera power supplies, and electric power steering systems requiring stable component supply across extended temperature and surge conditions.
Supply support for SM8S13CAHM3/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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on high-reliability and automotive-grade solutions.
The SM8S series is designed specifically for high-energy transient suppression in 12 V and 24 V automotive power networks, addressing ISO 7637-2 and ISO 16750-2 compliance requirements with extended temperature operation.
FAQ
What is the maximum clamping voltage of the SM8S13CAHM3/I at its rated peak pulse current?
The SM8S13CAHM3/I clamps to a maximum of 21.5 V at its rated peak pulse current of 307 A under the 10/1000 μs waveform. This value is measured per Figure 4 in the official Vishay datasheet (Document Number: 98229) and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Is the SM8S13CAHM3/I qualified for automotive applications per AEC-Q101?
Yes, the SM8S13CAHM3/I carries the "H" suffix in its ordering code, explicitly indicating AEC-Q101 qualification per the Vishay ordering information table. It undergoes stress testing including HTGB, HTRB, and temperature cycling to ensure reliability in automotive under-hood environments up to TJ = 175 °C.
What does the "HM3" suffix signify in SM8S13CAHM3/I?
The "HM3" suffix in SM8S13CAHM3/I denotes halogen-free, RoHS-compliant construction (M3) and AEC-Q101 qualification (H). The "I" indicates packaging in 13-inch plastic tape and reel with anode oriented toward sprocket holes, per Vishay's standard delivery mode for DO-218AC devices.
Can the SM8S13CAHM3/I be used in 24 V automotive systems?
No-the SM8S13CAHM3/I is specified for 13 V standoff (VWM) and 15.2 V nominal breakdown, making it appropriate for 12 V nominal systems. For 24 V systems, Vishay recommends higher-voltage variants such as SM8S26CAHM3/I (VWM = 26 V) or SM8S33CAHM3/I (VWM = 33 V) to maintain adequate margin above normal operating voltage.
Does the SM8S13CAHM3/I have polarity markings on the package?
No, the SM8S13CAHM3/I is a bidirectional TVS diode housed in a DO-218AC package with no cathode band or polarity marking. Its symmetrical I-V characteristic allows installation in either orientation, simplifying automated placement and eliminating orientation-related assembly errors.
SM8S13CAHM3/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):
- 307A
- Power - Peak Pulse:
- 6600W (6.6kW)
- 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
SM8S13CAHM3/I FAQ
1.How can I place an order for SM8S13CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM8S13CAHM3/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 SM8S13CAHM3/I reliable?
The price and inventory of SM8S13CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM8S13CAHM3/I is usually 5 days.
3.What payment methods are accepted for SM8S13CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM8S13CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM8S13CAHM3/I?
SM8S13CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM8S13CAHM3/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 SM8S13CAHM3/I?
For technical support, including SM8S13CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM8S13CAHM3/I requirements.
6.How does Aetrix verify that SM8S13CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SM8S13CAHM3/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 SM8S13CAHM3/I meets industry standards.
7.What is the process for return or replacement of SM8S13CAHM3/I?
All SM8S13CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM8S13CAHM3/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 SM8S13CAHM3/I part is unused and in its original packaging.
Return procedure for SM8S13CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM8S13CAHM3/I Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
