My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM15T15CAHE3/9AT
- Part No.:
- SM15T15CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T15CAHE3/9AT.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,995
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM15T15CAHE3/9AT 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), 15 V standoff voltage (VWM), and clamping voltage of 21.2 V at 71 A peak pulse current. It provides robust protection for automotive-grade signal lines and power rails against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T15CAHE3/9AT datasheet, SM15T15CAHE3/9AT pinout, SM15T15CAHE3/9AT application, or SM15T15CAHE3/9AT equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, 15 V VWM, low clamping ratio (1.41×VWM), and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical breakdown in both polarities due to its bidirectional construction. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and repeatable clamping performance across temperature (–65 °C to +150 °C).
The SM15T15CAHE3/9AT delivers 1500 W peak pulse power under standardized 10/1000 μs waveform conditions when mounted on 8.0 mm × 8.0 mm copper pads. Its thermal resistance (RθJA = 75 °C/W) and junction-to-lead resistance (RθJL = 15 °C/W) support reliable operation in high-impedance transient environments without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR min / max | 14.3 V / 15.8 V at 1.0 mA - Confirmed breakdown threshold range ensures consistent turn-on across production lots. |
| VC @ IPPM | 21.2 V at 71 A - Clamping voltage under 1500 W threat; limits downstream IC stress to ≤21.2 V during surge events. |
| PPPM | 1500 W - Peak pulse power rating per 10/1000 μs waveform; suitable for lightning and motor-switching transient suppression. |
| IPPM | 71 A - Peak pulse current capability; determines minimum system source impedance required for safe operation. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments with no derating up to 125 °C ambient. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD HBM ≥8 kV. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (negative polarity) | Accepts reverse surge current during negative half-cycle; symmetric with cathode for bidirectional clamping. |
| Cathode | Transient current entry point (positive polarity) | Accepts reverse surge current during positive half-cycle; identical electrical behavior to anode terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body control, and ADAS modules requiring long-term field stability. |
| 1500 W peak pulse power | Meets ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surge immunity requirements. |
| Low clamping ratio (1.41×VWM) | Minimizes overvoltage exposure to protected ICs while maintaining margin above normal operating voltage. |
| MSL Level 1 (260 °C) | Supports lead-free reflow without moisture sensitivity concerns; eliminates bake requirement prior to assembly. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across power rail input to absorb energy before it reaches LDOs or microcontrollers. Use Value: Limits rail voltage to ≤21.2 V during 71 A surges, preventing latch-up or permanent damage to downstream logic. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC inputs. IC Role / Device Role / Timing Role: Low-capacitance TVS shunting transient energy on differential or single-ended signal traces. Use Value: Maintains signal integrity by clamping fast-rising EFT bursts (IEC 61000-4-4) without distorting DC offset or bandwidth. |
| Telecom Data Line Surge Suppression | Consumer USB Port ESD Protection |
Use Scenario: Shielding RS-485 transceivers in base station backhaul links from induced lightning surges. IC Role / Device Role / Timing Role: Primary-level surge absorber located at connector interface, upstream of secondary filtering. Use Value: Handles 1500 W threats without failure, degrading gracefully to short-circuit mode to prevent fire hazard. |
Use Scenario: Hardening USB 2.0 data lines (D+/D−) against human-body-model ESD events. IC Role / Device Role / Timing Role: Fast-response clamping device with sub-nanosecond turn-on time protecting PHY transceivers. Use Value: Achieves <1.0 μA leakage at 15 V, ensuring minimal impact on USB suspend current and signal rise/fall times. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CA-E3/57T | Lower peak pulse power (400 W), same VWM/VC, SMA package (smaller footprint, higher RθJA = 110 °C/W) | Limited to lower-energy threats (IEC 61000-4-2 ESD only); unsuitable for lightning or load-dump events | Select when board space is constrained and surge energy is limited to <400 W. |
| 1.5KE15CA | Through-hole DO-201 package, identical electrical specs but higher mounting inductance and manual assembly requirement | Not compatible with automated SMT lines; less suitable for high-volume automotive production | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with SMAJ15CA-E3/57T and 1.5KE15CA, the SM15T15CAHE3/9AT uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and SMC package for automotive SMT production-enabling single-source compliance with ISO 16750-2 and IPC-A-610 Class 3 requirements.
Availability
SM15T15CAHE3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom infrastructure, and consumer USB protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SM15T15CAHE3/9AT 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 and automotive-grade validation.
The SM15T Series is designed specifically for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 compliance and 1500 W surge handling are mandatory.
FAQ
What does the "CA" suffix indicate in SM15T15CAHE3/9AT?
The "CA" suffix denotes a bidirectional configuration, meaning the SM15T15CAHE3/9AT clamps voltage symmetrically for both positive and negative transients. Unlike unidirectional variants (e.g., SM15T15A), it has no polarity marking and is used where AC signals or floating references require equal protection in both directions-critical for RS-485, CAN, or sensor bridge circuits.
Is SM15T15CAHE3/9AT qualified for automotive applications?
Yes, SM15T15CAHE3/9AT is AEC-Q101 qualified, as confirmed by Vishay's ordering code "HE3" suffix and documentation (Doc. #88380, Rev. 09-Jan-2024). This qualification covers high-temperature operating life, temperature cycling, and ESD testing, making SM15T15CAHE3/9AT suitable for under-hood and chassis-mounted automotive modules.
What is the clamping voltage of SM15T15CAHE3/9AT at rated peak pulse current?
The SM15T15CAHE3/9AT clamps to 21.2 V at its rated peak pulse current of 71 A under the standard 10/1000 μs waveform. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per JEDEC standards and defines the maximum voltage imposed on protected circuitry during worst-case surge events.
How does the SMC (DO-214AB) package of SM15T15CAHE3/9AT compare to SMA in surge handling?
The SMC package of SM15T15CAHE3/9AT provides significantly higher surge capability than SMA: 1500 W vs. 400 W for SMAJ15CA. This results from larger die area, lower thermal resistance (RθJA = 75 °C/W vs. 110 °C/W), and improved heat spreading-making SM15T15CAHE3/9AT appropriate for lightning-level threats where SMA devices would fail catastrophically.
What is the maximum reverse leakage current of SM15T15CAHE3/9AT at its standoff voltage?
The SM15T15CAHE3/9AT exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 15 V standoff voltage (VWM), measured at 25 °C. This low leakage ensures minimal power loss in always-on automotive modules and preserves accuracy in high-impedance sensor bias networks without loading effects.
SM15T15CAHE3/9AT 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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 71A
- 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)
SM15T15CAHE3/9AT FAQ
1.How can I place an order for SM15T15CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T15CAHE3/9AT 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 SM15T15CAHE3/9AT reliable?
The price and inventory of SM15T15CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T15CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SM15T15CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T15CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T15CAHE3/9AT?
SM15T15CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T15CAHE3/9AT 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 SM15T15CAHE3/9AT?
For technical support, including SM15T15CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T15CAHE3/9AT requirements.
6.How does Aetrix verify that SM15T15CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SM15T15CAHE3/9AT 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 SM15T15CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SM15T15CAHE3/9AT?
All SM15T15CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SM15T15CAHE3/9AT, 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 SM15T15CAHE3/9AT part is unused and in its original packaging.
Return procedure for SM15T15CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T15CAHE3/9AT 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 …
