My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM15T24CA-M3/57T
- Part No.:
- SM15T24CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T24CA-M3/57T.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,797
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM15T24CA-M3/57T 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), 24 V standoff voltage (VWM), and clamping voltage of 33.2 V at 45.0 A peak pulse current. It protects signal lines and power rails in automotive sensor interfaces and industrial I/O modules against lightning-induced and switching transients.
For engineers reviewing the SM15T24CA-M3/57T datasheet, SM15T24CA-M3/57T pinout, SM15T24CA-M3/57T application, or SM15T24CA-M3/57T equivalent, key selection criteria include bidirectional clamping capability, 24 V working voltage, 33.2 V max clamping at 45 A, halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness via HM3 variant.
Technical Context
This bidirectional TVS operates symmetrically across both polarities with identical breakdown (VBR min/max = 22.8 V / 25.2 V at 1 mA) and clamping behavior. Its low-inductance SMC package and glass-passivated junction enable fast response (<1 ns) to transients while sustaining 200 A non-repetitive forward surge (IFSM) in unidirectional test mode.
Thermal performance is defined by RθJA = 75 °C/W (typ.) and RθJL = 15 °C/W (typ.), with operating junction temperature range from –65 °C to +150 °C. The device meets MSL Level 1 per J-STD-020 and is rated for 260 °C lead-free reflow peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins; sets system-level overvoltage threshold for protected circuitry. |
| VBR (min/max) | 22.8 V / 25.2 V at 1 mA - Confirmed breakdown voltage range ensures reliable turn-on within ±5% tolerance at specified test current. |
| VC @ IPPM | 33.2 V at 45.0 A (10/1000 μs) - Clamping voltage under worst-case surge defines maximum stress imposed on downstream ICs or MOSFETs. |
| PPPM | 1500 W - Peak pulse power rating validates robustness against lightning surges (IEC 61000-4-5) and inductive switching events. |
| IPPM | 45.0 A - Peak pulse current capacity determines survivability under standardized 10/1000 μs threat waveforms. |
| TJ Range | –65 °C to +150 °C - Full automotive-grade thermal envelope supports under-hood and industrial control cabinet deployments. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height enables high-density PCB layout and automated assembly. |
Pinout & Package
SM15T24CA-M3/57T is a bidirectional TVS diode housed in an SMC (DO-214AB) package with two terminals: anode and cathode. As a bidirectional device, it has no polarity marking; both terminals are functionally symmetric and interchangeable in circuit placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Provides symmetrical conduction path during positive or negative voltage excursions beyond VWM; no fixed polarity reference required. |
| Cathode | Transient return path (bidirectional) | Functionally identical to anode; terminal labeling is mechanical only-electrical behavior is fully symmetric in both directions. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables protection against severe lightning-induced surges per IEC 61000-4-5 Level 4 without derating in standard PCB layouts. |
| Glass-passivated chip junction | Ensures stable leakage current (<1 μA at VWM) and long-term reliability under thermal cycling and humidity exposure. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and supports environmentally regulated industrial and automotive supply chains. |
| Low-inductance SMC package | Minimizes voltage overshoot during fast-rising transients (<1 ns response), critical for protecting high-speed sensor interfaces and CAN bus nodes. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free assembly without preconditioning, reducing manufacturing complexity and cost. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of engine coolant temperature sensors exposed to load-dump and jump-start transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between sensor signal line and ground, absorbing energy without polarity constraints. Use Value: Maintains signal integrity below 33.2 V clamping threshold during 45 A surges, preventing damage to 3.3 V or 5 V ADC front-ends. | Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers against ESD and relay-coil flyback spikes. IC Role / Device Role / Timing Role: Primary transient suppression device located at connector entry point, shunting surge energy before reaching optocoupler or microcontroller input. Use Value: Withstands repeated 1500 W pulses without degradation, extending field service life in factory automation environments. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Shielding RS-485 transceiver pins in outdoor telecom base stations from induced lightning surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Bidirectional TVS connected across differential pair (A–B), providing symmetrical overvoltage limiting on both conductors. Use Value: Matches RS-485 common-mode voltage range while clamping transients within safe limits for ISO 8802-3 compliant PHYs. | Use Scenario: Suppressing line-to-line and line-to-ground surges on AC/DC adapter primary-side rectifier outputs feeding USB-PD controllers. IC Role / Device Role / Timing Role: Secondary-side transient suppressor placed after bridge rectifier but before bulk capacitor, handling residual switching noise and external surges. Use Value: 24 V VWM aligns with typical 24 V DC bus ratings, ensuring no false triggering during normal operation while responding within nanoseconds. |
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 | 600 W PPPM, same VWM/VC, SMA package (smaller footprint, lower power handling) | Limited to lower-energy threats (e.g., ESD, local switching); unsuitable for lightning-level surges | Select when board space is constrained and threat level is limited to IEC 61000-4-2/4-4, not 4-5. |
| SMCJ24CA | 1500 W PPPM, identical VWM/VC, same SMC package, but M3 suffix not guaranteed; may be E3 or HE3 variant | Same surge capability; differs in material compliance (halogen-free status) and qualification grade (AEC-Q101 optional) | Choose if halogen-free requirement is waived or AEC-Q101 qualification is unnecessary for target application. |
Compared with SMAJ24CA and SMCJ24CA, SM15T24CA-M3/57T uniquely combines 1500 W surge rating, halogen-free RoHS compliance (M3), and commercial-grade SMC packaging optimized for high-volume automated assembly-making it the preferred choice for cost-sensitive yet robust industrial and automotive designs requiring full environmental compliance.
Availability
SM15T24CA-M3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter designs requiring stable component supply, consistent halogen-free material content, and verified 1500 W transient immunity.
Supply support for SM15T24CA-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, TVS devices, and MOSFETs for high-reliability power and protection applications.
The SM15T Series is designed specifically for high-power transient suppression in harsh environments-including automotive, industrial, and telecom infrastructure-where sustained 1500 W surge capability and AEC-Q101 readiness are essential.
FAQ
What does the "CA" suffix indicate in SM15T24CA-M3/57T?
The "CA" suffix denotes a bidirectional configuration, meaning SM15T24CA-M3/57T provides symmetrical clamping for both positive and negative voltage transients. Unlike unidirectional variants (e.g., SM15T24A), it has no polarity marking and functions identically regardless of voltage polarity applied across its terminals-ideal for protecting AC-coupled or differential signal paths where directionality is undefined.
Is SM15T24CA-M3/57T qualified to AEC-Q101?
SM15T24CA-M3/57T itself is not AEC-Q101 qualified; it carries the M3 suffix indicating halogen-free, RoHS-compliant commercial grade. However, the SM15T family offers AEC-Q101 variants under HM3 suffix (e.g., SM15T24CAHM3/57T). For automotive applications requiring qualification, that HM3 version must be specified-SM15T24CA-M3/57T is intended for industrial and consumer use where AEC-Q101 is not mandated.
What is the clamping voltage of SM15T24CA-M3/57T at its rated peak pulse current?
The clamping voltage of SM15T24CA-M3/57T is 33.2 V measured at 45.0 A peak pulse current using the standard 10/1000 μs waveform. This value represents the maximum voltage seen by downstream circuitry during a full-rated surge event and is critical for ensuring protected components (e.g., microcontrollers or transceivers) remain within their absolute maximum ratings.
Can SM15T24CA-M3/57T be used in place of a unidirectional TVS like SM15T24A?
SM15T24CA-M3/57T can replace SM15T24A only in circuits where bidirectional protection is acceptable and required-such as across differential pairs or AC signal lines. In DC-biased unidirectional applications (e.g., 24 V supply rail to ground), using the CA variant introduces unnecessary conduction during normal forward bias and may compromise efficiency or cause leakage issues; SM15T24A remains the correct choice for such cases.
What does the "/57T" in SM15T24CA-M3/57T signify?
The "/57T" suffix specifies the packaging format: 7-inch diameter plastic tape and reel containing 850 units. This is the standard delivery mode for surface-mount assembly lines using pick-and-place equipment. The "57T" code is distinct from "9AT" (13-inch reel, 3500 units) and ensures compatibility with automated feeders calibrated for 7-inch reels.
SM15T24CA-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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 45A
- 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)
SM15T24CA-M3/57T FAQ
1.How can I place an order for SM15T24CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T24CA-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 SM15T24CA-M3/57T reliable?
The price and inventory of SM15T24CA-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 SM15T24CA-M3/57T is usually 5 days.
3.What payment methods are accepted for SM15T24CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T24CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T24CA-M3/57T?
SM15T24CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T24CA-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 SM15T24CA-M3/57T?
For technical support, including SM15T24CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T24CA-M3/57T requirements.
6.How does Aetrix verify that SM15T24CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T24CA-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 SM15T24CA-M3/57T meets industry standards.
7.What is the process for return or replacement of SM15T24CA-M3/57T?
All SM15T24CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T24CA-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 SM15T24CA-M3/57T part is unused and in its original packaging.
Return procedure for SM15T24CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T24CA-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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
