My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM15T27CA-E3/57T
- Part No.:
- SM15T27CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T27CA-E3/57T.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,522
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM15T27CA-E3/57T from Vishay General Semiconductor is a bidirectional surface-mount 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 clamping to 37.5 V at 40.0 A peak pulse current (IPPM). It protects signal lines in automotive sensor units against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T27CA-E3/57T datasheet, SM15T27CA-E3/57T pinout, SM15T27CA-E3/57T application, or SM15T27CA-E3/57T equivalent, key selection criteria include bidirectional clamping symmetry, low clamping ratio (37.5 V / 23.1 V ≈ 1.62), RoHS-compliant commercial-grade packaging, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical avalanche breakdown in both directions, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1.0 μA at VWM).
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W, supporting reliable operation up to TJ = 150 °C. The failure mode under overstress is a short circuit, consistent with IEC 61000-4-5 Level 4 compliance requirements for industrial and automotive transient immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 23.1 V - Maximum continuous reverse operating voltage before leakage exceeds 1.0 μA; sets upper limit for protected line DC bias. |
| VBR (min/max) | 25.7 V / 28.4 V at 1.0 mA - Confirmed bidirectional breakdown window; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 37.5 V at 40.0 A (10/1000 μs) - Clamping voltage during worst-case surge; determines maximum stress on downstream ICs like CAN transceivers or ADC inputs. |
| PPPM | 1500 W - Peak pulse power handling per IEC 61000-4-5 waveform; sufficient for Level 4 (4 kV) lightning surge protection on I/O lines. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments with minimal derating. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with IPC-7351B land patterns. |
Pinout & Package
SMC (DO-214AB) package: bidirectional device with no polarity marking; terminals are symmetric anode/cathode pair. Mounting requires 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal for rated IPPM performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as input/output for transient energy; no polarity dependency; symmetric clamping behavior in both directions. |
| Terminal 2 | Cathode / Anode (bidirectional) | Paired terminal completing the bidirectional path; identical electrical role to Terminal 1; no functional distinction in layout or routing. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 4 kV surges without external series impedance or derating. |
| Low clamping ratio (1.62) | Minimizes overvoltage stress on 24 V-rated interface ICs such as LIN transceivers or analog front-ends in vehicle ECUs. |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure per JESD22-A101. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements. |
| RoHS-compliant, halogen-free option available | Meets EU RoHS Directive 2011/65/EU and JEDEC JS709E material restrictions for global automotive supply chains. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting 24 V CAN FD or LIN bus lines in engine control modules from load-dump and inductive switching transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surge energy before reaching transceiver IC. Use Value: Limits transient voltage to ≤37.5 V, preventing latch-up or gate oxide damage in TI TCAN1042 or NXP TJA1044 transceivers. |
Use Scenario: Safeguarding analog input channels (0–10 V, 4–20 mA) on programmable logic controller backplanes exposed to motor drive noise. IC Role / Device Role / Timing Role: Primary overvoltage suppression element on field-side signal conditioning PCBs upstream of precision op-amps and ADCs. Use Value: Maintains signal integrity by clamping fast-rising transients (<100 ns rise time) while adding <1 pF junction capacitance at 0 V bias. |
| Telecom Power Interface | Consumer Appliance Motor Control |
|
Use Scenario: Shielding 48 V PoE-powered Ethernet ports in network switches from ESD and lightning-induced surges on data pairs. IC Role / Device Role / Timing Role: Secondary-level TVS deployed after common-mode chokes to suppress differential-mode transients crossing isolation boundaries. Use Value: Delivers 1500 W pulse handling without degradation after >1000 surges, meeting Telcordia GR-1089-CORE Level 3 requirements. |
Use Scenario: Guarding microcontroller GPIOs driving brushed DC motors in smart washing machines during commutation spikes. IC Role / Device Role / Timing Role: Localized transient absorber mounted adjacent to motor driver IC output pins to prevent MCU reset or brownout. Use Value: Responds within <1 ns to 200 V/μs transients, limiting induced voltage on 3.3 V MCU rails to safe levels below 5.5 V absolute maximum. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ24CA | Lower PPPM (400 W), higher VC (38.9 V @ 32.4 A), same SMC package and VWM (24 V). | Not suitable for IEC 61000-4-5 Level 4; limited to Level 2 (2 kV) or lower-energy ESD events. | Select when cost sensitivity outweighs surge margin and system-level testing confirms 400 W sufficiency. |
| ON Semiconductor 1.5KE27CA | Higher VC (43.0 V @ 35.0 A), through-hole DO-201 package, 1500 W rating but larger footprint and manual assembly requirement. | Requires PCB redesign and wave-solder process; incompatible with high-density SMT layouts. | Choose only if legacy board reuse mandates axial/DO-201 form factor and thermal mass from chassis mounting is preferred. |
Compared with SMAJ24CA and 1.5KE27CA, SM15T27CA-E3/57T delivers superior clamping efficiency (37.5 V vs. ≥38.9 V), full SMT compatibility, and verified performance at IEC 61000-4-5 Level 4-making it optimal for new automotive and industrial designs requiring compact, high-reliability transient suppression.
Availability
SM15T27CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom power interfaces requiring stable component supply, RoHS-compliant sourcing, and AEC-Q101-qualified alternatives upon request.
Supply support for SM15T27CA-E3/57T 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, power efficiency, and automotive-grade qualification.
The SM15T Series is engineered specifically for high-energy transient suppression in harsh environments, targeting 24 V and 48 V systems where compact SMT form factor and repeatable clamping performance are critical.
FAQ
What is the clamping voltage of SM15T27CA-E3/57T at its rated peak pulse current?
The SM15T27CA-E3/57T clamps to 37.5 V at 40.0 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per terminal, and defines the maximum voltage imposed on protected circuitry during worst-case surge events. The SM15T27CA-E3/57T maintains this clamping performance across its full operating temperature range.
Is SM15T27CA-E3/57T suitable for automotive applications requiring AEC-Q101 qualification?
No-SM15T27CA-E3/57T carries the "E3" suffix, indicating RoHS-compliant commercial grade only. For AEC-Q101 qualification, the correct part is SM15T27CAHE3_A/H or SM15T27CAHM3_A/H, which include "HE3" or "HM3" suffixes and undergo additional stress testing per AEC-Q101 Rev D. The SM15T27CA-E3/57T itself is not AEC-Q101 qualified.
What does the "CA" suffix signify in SM15T27CA-E3/57T?
The "CA" suffix in SM15T27CA-E3/57T explicitly denotes a bidirectional Transient Voltage Suppressor. Unlike unidirectional variants ending in "A", the CA version provides symmetrical avalanche breakdown in both polarities, making it ideal for protecting AC-coupled signals, differential buses (e.g., RS-485), or any line where voltage polarity reversal may occur. The SM15T27CA-E3/57T has no polarity marking on its SMC package.
How does the thermal resistance of SM15T27CA-E3/57T affect its power dissipation capability?
The SM15T27CA-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15 °C/W. At 25 °C ambient, its steady-state power dissipation is limited to 6.5 W; however, under transient conditions, the low RθJL enables rapid heat transfer to PCB copper, sustaining 1500 W pulses without thermal runaway. Derating begins above 25 °C per Figure 2 in the datasheet.
Can SM15T27CA-E3/57T be used in place of a unidirectional TVS like SM15T27A-E3/57T?
Yes-but only if the protected circuit is inherently bidirectional or polarity-insensitive. The SM15T27CA-E3/57T provides identical VWM (23.1 V), VBR, and VC ratings in both directions, whereas SM15T27A-E3/57T is cathode-marked and blocks only in reverse bias. Substituting SM15T27CA-E3/57T for SM15T27A-E3/57T introduces no electrical risk but adds unnecessary bidirectional capability in DC-only applications.
SM15T27CA-E3/57T 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-E3/57T FAQ
1.How can I place an order for SM15T27CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T27CA-E3/57T 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-E3/57T reliable?
The price and inventory of SM15T27CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T27CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SM15T27CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T27CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T27CA-E3/57T?
SM15T27CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T27CA-E3/57T 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-E3/57T?
For technical support, including SM15T27CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T27CA-E3/57T requirements.
6.How does Aetrix verify that SM15T27CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T27CA-E3/57T 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-E3/57T meets industry standards.
7.What is the process for return or replacement of SM15T27CA-E3/57T?
All SM15T27CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T27CA-E3/57T, 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-E3/57T part is unused and in its original packaging.
Return procedure for SM15T27CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T27CA-E3/57T 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 …
