My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM15T150CAHE3/57T
- Part No.:
- SM15T150CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T150CAHE3/57T.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,028
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM15T150CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 150 V standoff voltage (VWM), 171 V breakdown voltage (VBR min), and 207 V clamping voltage (VC) at 7.2 A IPPM. It protects signal lines and power rails in automotive sensor units and industrial I/O interfaces against lightning-induced and switching transients.
For engineers reviewing the SM15T150CAHE3/57T datasheet, SM15T150CAHE3/57T pinout, SM15T150CAHE3/57T application, or SM15T150CAHE3/57T equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, 150 V VWM compatibility with 24 V–48 V systems, and SMC package suitability for high-reliability automated assembly.
Technical Context
This bidirectional TVS diode operates symmetrically across both polarities, delivering consistent clamping performance without polarity dependency. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 μA at VWM), while the low-inductance SMC package supports fast transient response under 10/1000 μs surge conditions.
The device is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its thermal resistance (RθJA = 75 °C/W) and junction-to-lead resistance (RθJL = 15 °C/W) enable reliable operation on standard PCB copper pads without heatsinking in typical industrial and automotive layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping begins; matches 48 V system bus with safety margin. |
| VBR (min) | 171 V - Minimum breakdown voltage at 1 mA test current; ensures robust turn-on threshold above normal operating transients. |
| VC @ IPPM | 207 V at 7.2 A - Clamped voltage during 10/1000 μs surge; limits downstream IC stress to safe levels in 24–48 V applications. |
| PPPM | 1500 W - Peak pulse power handling capability; sufficient for IEC 61000-4-5 Level 4 (4 kV) surge protection. |
| TJ max. | 150 °C - Maximum junction temperature; enables use in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
| Package | SMC (DO-214AB) - Surface-mount package with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with standard SMT pick-and-place. |
Pinout & Package
SM15T150CAHE3/57T uses a bidirectional two-terminal configuration in SMC (DO-214AB) package. No polarity marking is present on the case, as conduction occurs identically in both directions. Terminals are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on instantaneous polarity; no fixed polarity assignment. |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; symmetrical conduction path enables placement without orientation constraints. |
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 power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 4 kV in 2 Ω/42 Ω source impedance configurations. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS sensor modules requiring long-term field reliability. |
| Low clamping ratio (VC/VBR ≈ 1.21) | Minimizes overvoltage overshoot during surge events, reducing risk of latch-up or gate oxide damage in protected MOSFETs/ICs. |
| MSL Level 1, 260 °C peak reflow | Permits single-pass lead-free reflow assembly without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers in engine control units against load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential bus lines to limit common-mode surges to <210 V. Use Value: Prevents transceiver latch-up and maintains communication integrity during ISO 7637-2 Pulse 5a (75 V/350 ms) events. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers exposed to relay coil flyback and ESD. IC Role / Device Role / Timing Role: Standoff protector mounted between field-side input and optocoupler primary, clamping transients before isolation barrier. Use Value: Enables >100,000 actuation cycles without degradation, verified per IEC 61000-4-4 (4 kV EFT) and IEC 61000-4-2 (8 kV contact discharge). |
| Telecom Power Rail Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding 48 V PoE-powered Ethernet switches from induced lightning surges on data lines and auxiliary power feeds. IC Role / Device Role / Timing Role: Primary-level TVS on DC input rail and secondary-level clamp on isolated 12 V bias supply. Use Value: Limits rail collapse to <220 V during 10/1000 μs 1 kA surge, preserving PMIC functionality and preventing brownout resets. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in smart washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Across-motor terminals to absorb inductive kickback energy before it reaches motor driver ICs. Use Value: Reduces MOSFET drain-source voltage overshoot by ≥35%, extending driver lifetime and eliminating need for snubber RC networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150CA | Same VWM (150 V) and bidirectional configuration, but lower PPPM (400 W) and higher VC (243 V at 3.5 A). | Limited to lower-energy threats (IEC 61000-4-5 Level 2); unsuitable for automotive front-end or industrial mains-connected ports. | Select SMAJ150CA only for cost-sensitive consumer electronics where surge exposure is controlled and layout minimizes trace inductance. |
| 1.5KE150CA | Higher VBR (167–183 V), same VC (220 V), but through-hole DO-201 package and lower thermal performance (RθJA ≈ 100 °C/W). | Requires manual or wave soldering; incompatible with high-density SMT layouts and automotive vibration environments. | Choose 1.5KE150CA only for legacy through-hole designs or prototyping where board space and reflow compatibility are not constraints. |
Compared with SMAJ150CA and 1.5KE150CA, SM15T150CAHE3/57T delivers 3.75× higher surge power handling, 15% lower clamping voltage, and AEC-Q101 qualification-making it the sole option qualified for production automotive ECUs and industrial fieldbus nodes requiring validated long-term reliability.
Availability
SM15T150CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom power supplies requiring stable component supply, AEC-Q101 compliance, and 1500 W surge immunity.
Supply support for SM15T150CAHE3/57T 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SM15T Series was engineered for high-power transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where failure modes must be fail-safe (short-circuit) and performance must remain stable across temperature and lifetime.
FAQ
What is the clamping voltage of SM15T150CAHE3/57T at its rated peak pulse current?
The SM15T150CAHE3/57T has a maximum clamping voltage (VC) of 207 V when subjected to its specified peak pulse current (IPPM) of 7.2 A under a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88380 and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SM15T150CAHE3/57T suitable for automotive applications?
Yes, SM15T150CAHE3/57T is AEC-Q101 qualified and explicitly designated for automotive use with suffix "HE3". It undergoes stress testing including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev D, making it appropriate for engine control, body electronics, and ADAS sensor modules.
Does SM15T150CAHE3/57T have polarity markings on the package?
No, SM15T150CAHE3/57T is a bidirectional TVS diode and carries no polarity marking. The SMC package lacks a cathode band or other orientation indicator because both terminals function identically regardless of applied voltage polarity.
What is the thermal resistance of SM15T150CAHE3/57T from junction to ambient?
The typical thermal resistance from junction to ambient (RθJA) for SM15T150CAHE3/57T is 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes standard JEDEC test conditions and guides thermal design for continuous power dissipation up to 6.5 W.
How does SM15T150CAHE3/57T differ from unidirectional variants like SM15T150AHE3/57T?
SM15T150CAHE3/57T is bidirectional with symmetrical clamping in both directions, while SM15T150AHE3/57T is unidirectional and conducts only in reverse bias. The "CA" suffix denotes bidirectional operation, enabling protection of AC signals or floating buses without polarity constraints-critical for CAN, LIN, and RS-485 interfaces.
SM15T150CAHE3/57T 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 7.2A
- 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 (SMCJ)
SM15T150CAHE3/57T FAQ
1.How can I place an order for SM15T150CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T150CAHE3/57T 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 SM15T150CAHE3/57T reliable?
The price and inventory of SM15T150CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T150CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SM15T150CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T150CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T150CAHE3/57T?
SM15T150CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T150CAHE3/57T 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 SM15T150CAHE3/57T?
For technical support, including SM15T150CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T150CAHE3/57T requirements.
6.How does Aetrix verify that SM15T150CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T150CAHE3/57T 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 SM15T150CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SM15T150CAHE3/57T?
All SM15T150CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T150CAHE3/57T, 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 SM15T150CAHE3/57T part is unused and in its original packaging.
Return procedure for SM15T150CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T150CAHE3/57T 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 …
