My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM15T68CAHM3_A/I
- Part No.:
- SM15T68CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T68CAHM3_A/I.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,390
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM15T68CAHM3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 68 V standoff voltage (VWM = 58.1 V), and clamping voltage of 92.0 V at 16.3 A IPPM. It protects automotive-grade signal lines and power rails against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T68CAHM3_A/I datasheet, SM15T68CAHM3_A/I pinout, SM15T68CAHM3_A/I application, or SM15T68CAHM3_A/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), SMC package mechanical data, and direct alternatives with documented clamping and polarity differences.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage VBR = 64.6–71.4 V (measured at 1 mA IT), reverse leakage ID ≤ 1.0 μA at VWM, and clamping voltage VC = 92.0 V under 10/1000 μs waveform at IPPM = 16.3 A. Its low inductance and glass-passivated junction support fast response to ESD and surge events.
Designed for high-reliability environments, SM15T68CAHM3_A/I meets MSL Level 1 (reflow peak 260 °C), JESD201 Class 2 whisker resistance, and AEC-Q101 qualification - confirmed by HM3 suffix and "_A/I" tape-and-reel packaging for automotive production use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains lightning-surge energy without failure in I/O protection circuits |
| Standoff Voltage (VWM) | 58.1 V - maximum continuous reverse voltage before conduction begins |
| Breakdown Voltage (VBR) | 64.6–71.4 V at 1 mA - defines onset of avalanche clamping in both directions |
| Clamping Voltage (VC) | 92.0 V at 16.3 A IPPM - limits downstream voltage during surge, protecting 75 V-rated ICs |
| Junction Temperature Range | −65 °C to +150 °C - enables operation in under-hood automotive and industrial ambient conditions |
| Thermal Resistance (RθJA) | 75 °C/W - determines derating curve above 25 °C ambient; requires ≥8 mm × 8 mm copper pads |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress-test requirements (HM3 suffix) |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H), cathode band absent (bidirectional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | Conducts during negative surges; symmetrical with Cathode in bidirectional operation |
| Cathode | Transient current entry (positive half-cycle) | Conducts during positive surges; electrically identical to Anode due to CA symmetry |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 (4 kV) surges on 2 Ω source impedance with margin |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage stress on protected MOSFETs or CAN transceivers during transients |
| AEC-Q101 qualified (HM3) | Validated for automotive powertrain, body control, and ADAS modules requiring long-term reliability |
| MSL Level 1 reflow compatibility | Supports standard SMT assembly without moisture sensitivity handling or baking |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-supplied ECUs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed at input filter stage to clamp ±100 V spikes before DC/DC regulator. Use Value: Withstands 1500 W surges while maintaining 92.0 V clamping - keeps downstream 75 V-rated LDOs and microcontrollers within safe operating area. |
Use Scenario: Shielding 4–20 mA current-loop sensor outputs from field-wiring induced surges in factory automation. IC Role / Device Role / Timing Role: SMC-packaged TVS mounted directly at connector interface to shunt transients before analog front-end op-amps. Use Value: Low 75 °C/W RθJA allows stable clamping performance even in sealed enclosures up to +85 °C ambient. |
| Telecom Line Interface Protection | Automotive CAN FD Bus Protection |
Use Scenario: Safeguarding Ethernet PHY or RS-485 transceivers connected to outdoor cabling exposed to lightning coupling. IC Role / Device Role / Timing Role: Bidirectional TVS placed differential-mode across line pairs to suppress common-mode surges. Use Value: Symmetric 64.6–71.4 V VBR ensures balanced clamping on both conductors - prevents data corruption during 10/1000 μs transients. |
Use Scenario: Protecting high-speed CAN FD nodes (up to 5 Mbps) in vehicle infotainment gateways from ESD and battery transients. IC Role / Device Role / Timing Role: TVS installed between CANH/CANL and ground to clamp differential and common-mode noise. Use Value: 92.0 V clamping voltage preserves CAN FD bus integrity while meeting ISO 11898-2 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64CA | Lower PPPM (400 W), same VWM (58.1 V), higher VC (103 V at 3.9 A) | Not suitable for IEC 61000-4-5 Level 4; limited to lower-energy threats | Select when cost-sensitive designs tolerate reduced surge margin and smaller SOD-123 package footprint |
| SMCJ64CA | Same PPPM (1500 W), identical VWM/VC specs, but non-AEC-Q101 (E3/M3 only) | Lacks automotive qualification; not approved for safety-critical vehicle systems | Choose for industrial/commercial applications where AEC-Q101 is not mandated and HM3 traceability is unnecessary |
Compared with SMAJ64CA and SMCJ64CA, SM15T68CAHM3_A/I uniquely combines 1500 W surge capability, AEC-Q101 qualification, and halogen-free construction - making it the only option qualified for automotive production with full compliance traceability and high-energy robustness.
Availability
SM15T68CAHM3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom line protection, and CAN FD bus protection requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SM15T68CAHM3_A/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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with global manufacturing and testing infrastructure focused on reliability and automotive-grade validation.
The SM15T Series targets high-energy transient suppression in harsh environments - specifically engineered for AEC-Q101 compliance, 1500 W surge handling, and SMC-package manufacturability in automotive and industrial power/signal protection.
FAQ
What does the "CA" suffix indicate in SM15T68CAHM3_A/I?
The "CA" suffix denotes a bidirectional configuration - meaning SM15T68CAHM3_A/I clamps voltage transients equally in both polarities, unlike unidirectional "A" variants that conduct only in reverse bias. This makes SM15T68CAHM3_A/I ideal for AC-coupled lines, differential buses like CAN, or floating grounds where polarity is undefined.
Is SM15T68CAHM3_A/I qualified for automotive use?
Yes, SM15T68CAHM3_A/I is AEC-Q101 qualified, confirmed by the "HM3" suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It undergoes stress testing per AEC-Q101 standards and is approved for use in engine control units, body electronics, and ADAS modules.
What is the clamping voltage of SM15T68CAHM3_A/I at its rated peak pulse current?
SM15T68CAHM3_A/I clamps to 92.0 V at its specified peak pulse current of 16.3 A under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88380 and defines the maximum voltage imposed on protected circuitry during surge events.
How does the "_A/I" suffix affect packaging and delivery of SM15T68CAHM3_A/I?
The "_A/I" suffix indicates SM15T68CAHM3_A/I is supplied in 13-inch diameter plastic tape-and-reel packaging with a base quantity of 3500 units per reel - optimized for high-volume SMT placement. The "A" denotes revision level; "I" specifies the reel size and packaging format per Vishay's ordering nomenclature.
Can SM15T68CAHM3_A/I replace SM15T68A in a design?
No - SM15T68CAHM3_A/I is bidirectional while SM15T68A is unidirectional. Replacing SM15T68A with SM15T68CAHM3_A/I may cause unintended conduction in DC-biased circuits. The cathode marking and forward voltage behavior differ fundamentally; layout and system-level polarity assumptions must be revalidated.
SM15T68CAHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- SM15T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 16.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
SM15T68CAHM3_A/I FAQ
1.How can I place an order for SM15T68CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T68CAHM3_A/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 SM15T68CAHM3_A/I reliable?
The price and inventory of SM15T68CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T68CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SM15T68CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T68CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T68CAHM3_A/I?
SM15T68CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T68CAHM3_A/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 SM15T68CAHM3_A/I?
For technical support, including SM15T68CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T68CAHM3_A/I requirements.
6.How does Aetrix verify that SM15T68CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SM15T68CAHM3_A/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 SM15T68CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SM15T68CAHM3_A/I?
All SM15T68CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM15T68CAHM3_A/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 SM15T68CAHM3_A/I part is unused and in its original packaging.
Return procedure for SM15T68CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T68CAHM3_A/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 …
