My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM15T27CA-M3/57T
- Part No.:
- SM15T27CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T27CA-M3/57T.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,933
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM15T27CA-M3/57T 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), 23.1 V stand-off voltage (VWM), 25.7–28.4 V breakdown voltage (VBR), and clamps to ≤37.5 V at 40.0 A peak pulse current. It protects signal lines in automotive sensor units against inductive switching transients.
For engineers reviewing the SM15T27CA-M3/57T datasheet, SM15T27CA-M3/57T pinout, SM15T27CA-M3/57T application, or SM15T27CA-M3/57T equivalent, key selection criteria include bidirectional clamping capability, 1500 W surge rating, halogen-free RoHS compliance (M3 suffix), AEC-Q101 qualification readiness, and SMC package thermal performance with RθJA = 75 °C/W.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities, with breakdown tested at 1.0 mA and clamping verified under standardized 10/1000 μs waveform conditions. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1.0 μA at VWM).
Designed for high-impedance source environments, it sustains 200 A non-repetitive forward surge (unidirectional mode only) and maintains operation across –65 °C to +150 °C junction temperature range. Failure mode under overstress is short-circuit, consistent with IEC 61000-4-5 Level 4 compliance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 23.1 V - Maximum continuous reverse operating voltage before clamping initiates; sets system-level overvoltage threshold for 24 V nominal bus protection. |
| VBR min/max | 25.7 V / 28.4 V - Breakdown occurs within this band at 1.0 mA test current; ensures predictable turn-on margin above VWM. |
| VC @ IPPM | 37.5 V @ 40.0 A - Clamping voltage during 10/1000 μs surge; defines worst-case voltage seen by downstream ICs during transient events. |
| PPPM | 1500 W - Peak pulse power handling per IEC 61000-4-5; supports lightning-induced surges on external I/O lines without degradation. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on 8.0 mm × 8.0 mm copper pads; enables thermal design for sustained 6.5 W power dissipation at 50 °C ambient. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place and reflow profiles up to 260 °C peak. |
| Compliance | Halogen-free, RoHS-compliant (M3 suffix), MSL Level 1, JESD201 Class 2 whisker resistance - meets automotive and industrial environmental and reliability standards. |
Pinout & Package
SM15T27CA-M3/57T uses a two-terminal SMC (DO-214AB) package with no polarity marking for bidirectional operation. Terminals are matte tin-plated and solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (positive half-cycle) | Accepts surge current during positive voltage excursions; symmetrical with cathode due to bidirectional structure. |
| Cathode | Transient current entry point (negative half-cycle) | Accepts surge current during negative voltage excursions; functionally identical to anode in CA-suffix devices. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables robust protection against lightning-induced surges on CAN, LIN, or sensor interfaces without derating in typical board layouts. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes voltage overshoot during transients, reducing stress on 3.3 V or 5 V logic interfaces downstream of the TVS. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage current across temperature and humidity cycling, critical for automotive under-hood applications. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free assembly without moisture-related popcorning or delamination risks. |
| AEC-Q101 qualification path | Base P/NHM3 variant (e.g., SM15T27CAHM3_A/H) is qualified for automotive use; this M3 version shares identical die and construction. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load-dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to shunt transients before reaching ADC front-end or signal conditioner. Use Value: Limits transient voltage to ≤37.5 V during 40 A surges, preserving 12-bit ADC accuracy and preventing latch-up in microcontroller GPIOs. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers connected to solenoid valves and contactors. IC Role / Device Role / Timing Role: Primary surge suppression device on field-side PCB traces, positioned before optocoupler isolation barrier. Use Value: Absorbs 1500 W pulses from inductive kickback without degradation, maintaining >100 k-cycle reliability in factory automation environments. |
| Telecom Power Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding PoE-powered Ethernet PHYs and DC-DC converters from ESD and surge coupling via shared 48 V supply rails. IC Role / Device Role / Timing Role: Secondary protection stage after primary GDT or polymer TVS, providing fast-response clamping for sub-microsecond transients. Use Value: Achieves <1 ns response time and <37.5 V clamping, ensuring IEEE 802.3af/at compliance and preventing PHY reset events. |
Use Scenario: Guarding microcontroller I/O pins driving H-bridge gate drivers in washing machine motor control boards subjected to brush-commutator noise. IC Role / Device Role / Timing Role: Localized TVS mounted adjacent to MCU header pins to suppress coupled noise from BLDC motor commutation. Use Value: Withstands repetitive 100 A surge currents at 1 Hz rate while maintaining <1 μA leakage at 23.1 V, avoiding false wake-ups or brownouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24CA | Lower PPPM (400 W), higher VC (38.9 V @ 10.3 A), same SMC package but unidirectional/bidirectional variants differ in marking convention. | Rated for lighter-duty I/O protection; insufficient for IEC 61000-4-5 Level 4 testing where 1500 W is mandated. | Select SMAJ24CA only for cost-sensitive consumer applications with <500 W threat levels and no automotive qualification requirement. |
| SMCJ24CA | Same 1500 W rating and SMC package, but VWM = 24.0 V, VBR = 26.7–29.5 V, VC = 38.9 V @ 38.5 A; RoHS-compliant E3 suffix standard, M3 optional. | Functionally interchangeable for 24 V systems; slightly higher clamping voltage reduces margin for 3.3 V logic protection. | Choose SMCJ24CA when AEC-Q101 qualification is mandatory (HE3/HM3 variants available) and layout allows minor VC increase. |
Compared with SM15T27CA-M3/57T, SMAJ24CA offers lower surge capacity and reduced design margin, while SMCJ24CA provides identical power handling but trades 1.4 V higher clamping for broader AEC-Q101 availability-making SM15T27CA-M3/57T optimal for cost-constrained 24 V automotive sensor nodes requiring halogen-free compliance.
Availability
SM15T27CA-M3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom power interfaces, and consumer appliance motor controllers requiring stable component supply with halogen-free, RoHS-compliant construction.
Supply support for SM15T27CA-M3/57T 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SM15T Series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where 1500 W surge immunity and AEC-Q101 qualification readiness are essential.
FAQ
What does the "CA" suffix indicate in SM15T27CA-M3/57T?
The "CA" suffix denotes a bidirectional configuration, meaning SM15T27CA-M3/57T clamps voltage transients equally in both polarities-unlike "A"-suffix unidirectional parts that clamp only in reverse bias. This makes SM15T27CA-M3/57T ideal for AC-coupled or floating signal lines such as CAN bus or differential sensor outputs where polarity reversal can occur.
Is SM15T27CA-M3/57T AEC-Q101 qualified?
SM15T27CA-M3/57T itself carries the commercial-grade M3 suffix (halogen-free, RoHS-compliant), but Vishay offers AEC-Q101-qualified versions under HM3 suffixes (e.g., SM15T27CAHM3_A/H). The die, package, and process are identical-only the test screening and traceability differ-so SM15T27CA-M3/57T serves as the baseline for automotive qualification paths.
What is the maximum clamping voltage of SM15T27CA-M3/57T under surge conditions?
The maximum clamping voltage of SM15T27CA-M3/57T is 37.5 V when subjected to its rated 40.0 A peak pulse current (IPPM) under the standard 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 worst-case transient events.
How does the SMC (DO-214AB) package of SM15T27CA-M3/57T affect thermal performance?
The SMC package of SM15T27CA-M3/57T delivers a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. This enables reliable operation at 6.5 W continuous power dissipation up to 50 °C ambient, supporting high-duty-cycle surge environments without forced cooling.
Can SM15T27CA-M3/57T replace SM15T24CA in a 24 V system?
SM15T27CA-M3/57T has a higher VWM (23.1 V vs. 20.5 V) and VBR (25.7–28.4 V vs. 22.8–25.2 V) than SM15T24CA, offering improved margin against normal operating voltage tolerances in 24 V systems. However, its clamping voltage (37.5 V) is slightly lower than SM15T24CA's 33.2 V, so compatibility depends on downstream IC absolute maximum ratings and required safety margin.
SM15T27CA-M3/57T 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 40A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SM15T27CA-M3/57T FAQ
1.How can I place an order for SM15T27CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T27CA-M3/57T 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 SM15T27CA-M3/57T reliable?
The price and inventory of SM15T27CA-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T27CA-M3/57T is usually 5 days.
3.What payment methods are accepted for SM15T27CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T27CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T27CA-M3/57T?
SM15T27CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T27CA-M3/57T 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 SM15T27CA-M3/57T?
For technical support, including SM15T27CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T27CA-M3/57T requirements.
6.How does Aetrix verify that SM15T27CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T27CA-M3/57T 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 SM15T27CA-M3/57T meets industry standards.
7.What is the process for return or replacement of SM15T27CA-M3/57T?
All SM15T27CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T27CA-M3/57T, 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 SM15T27CA-M3/57T part is unused and in its original packaging.
Return procedure for SM15T27CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T27CA-M3/57T 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 …
