My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM6T15CAHM3_A/H
- Part No.:
- SM6T15CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T15CAHM3_A/H.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,600
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM6T15CAHM3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 15 V standoff voltage (VWM), 16.7 V breakdown voltage (VBR), and 600 W peak pulse power (10/1000 μs). It clamps transients to ≤27.2 V at 22 A, operates from −65 °C to +150 °C, and is halogen-free, RoHS-compliant, and AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the SM6T15CAHM3_A/H datasheet, SM6T15CAHM3_A/H pinout, SM6T15CAHM3_A/H application, or SM6T15CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage under 27.2 V at 22 A, AEC-Q101 qualification, SMB package compatibility with automated SMT assembly, and compliance with J-STD-020 MSL level 1 at 260 °C peak reflow.
Technical Context
This bidirectional TVS diode uses a glass-passivated silicon junction to provide symmetrical clamping in both polarities, enabling robust protection of differential signal lines and AC-coupled interfaces without polarity sensitivity. Its low-inductance SMB package and 20 °C/W junction-to-lead thermal resistance support reliable energy dissipation during repetitive or single-event transients.
The device meets IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT) immunity requirements when applied with proper PCB layout-specifically using 0.2" × 0.2" copper pads per terminal-and delivers stable performance across its full operating temperature range due to tight VBR tolerance (±5%) and low temperature coefficient (8.4 × 10⁻⁴/°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12.8 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR (min/max) | 14.3 V / 15.8 V - Breakdown occurs within this band at 1 mA test current; ensures predictable turn-on across production lots. |
| VC @ IPPM | 27.2 V @ 22 A - Clamped voltage during 10/1000 μs surge; determines maximum stress imposed on protected ICs. |
| PPPM | 600 W - Peak pulse power handling capacity; supports protection against ISO 7637-2 Pulse 1/2a/3a and similar automotive transients. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments with high ambient thermal load. |
| MSL Level | Level 1 (J-STD-020) - No dry-pack or baking required prior to reflow; compatible with standard SMT assembly lines. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode) | Bidirectional terminal | Identical electrical behavior in either direction; no cathode/anode distinction-both terminals function as symmetrical clamping nodes. |
| Anode (Cathode) | Bidirectional terminal | Same as above; device exhibits identical VBR, VC, and leakage in forward and reverse bias configurations. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables direct use in ADAS, body control, and infotainment modules. |
| 600 W peak pulse power | Handles high-energy transients such as load dump (ISO 16750-2) and inductive switching spikes without degradation when mounted on recommended 5 mm × 5 mm copper pads. |
| Low clamping voltage (27.2 V) | Minimizes overvoltage stress on downstream 16 V-rated components like CAN transceivers or LIN controllers in 12 V vehicle networks. |
| MSL Level 1 rating | Eliminates moisture sensitivity concerns and pre-reflow baking steps-reduces manufacturing cost and process complexity in high-volume SMT lines. |
Applications
| Automotive Power Line Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients in passenger vehicles and commercial trucks. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between power rail and ground, absorbing energy from ISO 16750-2 Pulse 5a/b surges. Use Value: Limits rail voltage to ≤27.2 V during 600 W transients, preventing latch-up or permanent damage to microcontrollers and PMICs. | Use Scenario: Safeguarding high-speed CAN FD physical layer transceivers (e.g., TJA1044, SN65HVD230) against ESD and EFT events on differential bus lines. IC Role / Device Role / Timing Role: Symmetrical TVS pair (one per line) referenced to common-mode ground, maintaining signal integrity during ±25 kV contact ESD per IEC 61000-4-2. Use Value: Clamps differential and common-mode transients without distorting CAN waveform edges, preserving bit timing and error-free communication up to 5 Mbps. |
| Industrial Sensor Interface Protection | Consumer Appliance Motor Drive Inputs |
Use Scenario: Shielding analog and digital sensor outputs (e.g., pressure, temperature, position sensors) connected to PLC I/O modules from field-induced surges. IC Role / Device Role / Timing Role: Low-capacitance (≈130 pF at 0 V) bidirectional clamp on signal lines, placed adjacent to connector entry points. Use Value: Prevents false triggering or ADC saturation while maintaining signal bandwidth >1 MHz due to minimal parasitic capacitance. | Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines, vacuum cleaners, and HVAC blowers. IC Role / Device Role / Timing Role: Across-the-line TVS on motor supply inputs, shunting inductive kickback energy away from MCU GPIOs and relay drivers. Use Value: Withstands repeated 100 A IFSM surges and maintains clamping performance over 10⁵ cycles-ensuring long-term reliability in high-durability appliances. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CA | Same VWM (12.8 V), lower PPPM (400 W), SMA package (larger footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients; unsuitable for ISO 16750-2 Pulse 5a where 600 W is required | Select SMAJ15CA only for cost-sensitive consumer applications with <400 W threat profiles and existing SMA layout. |
| 1.5KE15CA | Same VWM/VBR, higher PPPM (1500 W), axial DO-201 package (through-hole, not SMT-compatible) | Requires manual or wave soldering; incompatible with automated SMT lines and space-constrained PCBs | Choose 1.5KE15CA only for prototyping or legacy through-hole designs where board real estate and assembly method permit. |
Compared with SMAJ15CA and 1.5KE15CA, SM6T15CAHM3_A/H uniquely combines AEC-Q101 qualification, 600 W pulse rating, SMB SMT compatibility, and MSL Level 1-all in a halogen-free, RoHS-compliant construction-making it the optimal choice for volume automotive and industrial SMT production.
Availability
SM6T15CAHM3_A/H is available at Aetrix Electronics and suitable for automotive power line protection, CAN bus transient suppression, and industrial sensor interface protection requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for SM6T15CAHM3_A/H 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SM6T Series is designed specifically for high-reliability transient suppression in automotive, industrial, and telecom systems-delivering consistent clamping performance, AEC-Q101 validation, and SMT-ready packaging for demanding real-world surge environments.
FAQ
What is the clamping voltage of SM6T15CAHM3_A/H at its rated peak pulse current?
The SM6T15CAHM3_A/H has a maximum clamping voltage (VC) of 27.2 V at 22 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per Figure 1 in the official Vishay datasheet (Document Number: 88385) and defines the upper voltage limit imposed on protected circuitry during surge events. The SM6T15CAHM3_A/H maintains this clamping performance across its full operating temperature range and after repeated transient exposure when mounted per recommended pad layout.
Is SM6T15CAHM3_A/H suitable for automotive applications?
Yes, SM6T15CAHM3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via its HM3 suffix (halogen-free, RoHS-compliant, and AEC-Q101 qualified). It meets critical automotive requirements including temperature cycling, high-temperature reverse bias (HTRB), and ESD robustness. The SM6T15CAHM3_A/H is commonly deployed in body control modules, infotainment systems, and ADAS sensors where ISO 16750-2 and ISO 7637-2 compliance is mandatory.
What does the "CA" suffix indicate in SM6T15CAHM3_A/H?
The "CA" suffix in SM6T15CAHM3_A/H denotes a bidirectional configuration-meaning the device provides symmetrical transient suppression in both polarities, with identical breakdown and clamping characteristics regardless of voltage polarity. This distinguishes it from unidirectional variants (e.g., SM6T15A), which have a defined cathode band and conduct only in reverse bias. The SM6T15CAHM3_A/H has no polarity marking and is used where AC signals or differential lines require balanced protection.
What is the thermal resistance of SM6T15CAHM3_A/H from junction to lead?
The SM6T15CAHM3_A/H has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, as specified in the Vishay SM6T Series datasheet (Document Number: 88385, page 3). This low thermal resistance enables efficient heat transfer from the silicon die to the PCB copper pads during transient events, supporting reliable operation at elevated ambient temperatures. The SM6T15CAHM3_A/H achieves this via its SMB package construction and optimized internal metallization, contributing to its +150 °C maximum junction temperature rating.
Does SM6T15CAHM3_A/H require special handling during PCB assembly?
No, SM6T15CAHM3_A/H is rated MSL Level 1 per J-STD-020, meaning it may be stored indefinitely at ambient conditions and processed through standard reflow profiles-including peak temperatures up to 260 °C-without dry packing or baking. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 for solderability, and the SM6T15CAHM3_A/H is fully compatible with automated pick-and-place and reflow soldering equipment used in high-volume SMT production.
SM6T15CAHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 28A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SM6T15CAHM3_A/H FAQ
1.How can I place an order for SM6T15CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T15CAHM3_A/H 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 SM6T15CAHM3_A/H reliable?
The price and inventory of SM6T15CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T15CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T15CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T15CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T15CAHM3_A/H?
SM6T15CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T15CAHM3_A/H 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 SM6T15CAHM3_A/H?
For technical support, including SM6T15CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T15CAHM3_A/H requirements.
6.How does Aetrix verify that SM6T15CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T15CAHM3_A/H 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 SM6T15CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T15CAHM3_A/H?
All SM6T15CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T15CAHM3_A/H, 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 SM6T15CAHM3_A/H part is unused and in its original packaging.
Return procedure for SM6T15CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T15CAHM3_A/H 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 …
