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Vishay General Semiconductor - Diodes Division SM15T27AHM3_A/I
- Part No.:
- SM15T27AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T27AHM3_A/I.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,740
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Product details
Overview
SM15T27AHM3_A/I from Vishay General Semiconductor is a unidirectional 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 37.5 V clamping voltage (VC) at 40.0 A peak pulse current - used to protect automotive sensor signal lines against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T27AHM3_A/I datasheet, SM15T27AHM3_A/I pinout, SM15T27AHM3_A/I application, or SM15T27AHM3_A/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), low-inductance design, and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
The SM15T27AHM3_A/I employs a glass-passivated silicon junction optimized for fast response (<1 ps) to transient overvoltage events, with clamping action triggered when reverse voltage exceeds 25.7 V. Its unidirectional polarity features a cathode band marking and operates with low leakage (<1.0 μA at 23.1 V).
Designed for high-impedance source environments, it sustains 200 A non-repetitive forward surge current (10 ms half-sine) and derates linearly above 25 °C ambient, maintaining safe operation up to 150 °C junction temperature. Thermal performance relies on 0.31" × 0.31" copper pad layout per terminal per JEDEC standards.
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 normal circuit bias. |
| VBR (min/max) | 25.7 V / 28.4 V at 1.0 mA - guaranteed breakdown onset range; ensures consistent turn-on across production lots. |
| VC @ IPPM | 37.5 V at 40.0 A (10/1000 μs) - clamped voltage during worst-case transient; defines maximum stress on downstream ICs. |
| PPPM | 1500 W - peak pulse power handling capability; enables protection against lightning surges and motor-switching spikes. |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance; requires minimum 8.0 mm × 8.0 mm copper pads for rated power dissipation. |
| TJ max | +150 °C - maximum junction temperature; supports under-hood automotive use with proper PCB thermal design. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC standard. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode marked by band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse transient return path | Connected to system ground or low-impedance return; forms clamping loop with cathode during overvoltage. |
| Cathode | Reverse-biased terminal / transient voltage reference | Marked with band; tied to protected line (e.g., sensor supply or signal); conducts avalanche current during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 4 (4 kV) surges without derating in typical automotive harness impedance. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes voltage overshoot during transients, reducing risk of latch-up or damage to 24 V-rated microcontrollers and CAN transceivers. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control modules, ADAS sensors, and body electronics with full stress testing. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without moisture sensitivity concerns or pre-bake requirements. |
| Low inductance layout | Reduces voltage overshoot (L·di/dt) during fast transients; critical for protecting high-speed sensor interfaces like LIN or SENT. |
Applications
| Automotive Sensor Protection | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments exposed to load-dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between sensor VOUT and ground, clamping transients before they reach ADC input or signal conditioner. Use Value: Maintains signal integrity below 37.5 V during 40 A surges, preventing ADC saturation and enabling compliance with ISO 7637-2 Pulse 1/2a/5a. |
Use Scenario: Safeguarding digital I/O lines of PLC modules connected to solenoid valves and contactors subject to inductive kickback. IC Role / Device Role / Timing Role: Standoff-clamp TVS on 24 V DC control lines, absorbing >1500 W energy from coil de-energization spikes. Use Value: Limits voltage excursion to ≤37.5 V within 1 ns, avoiding latch-up in industrial microcontrollers and ensuring EN 61000-4-4 Level 4 immunity. |
| Telecom Power Interface | Computer Peripheral Port Protection |
Use Scenario: Shielding 24 V DC power inputs of remote radio units from lightning-induced surges conducted via outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on main DC rail, coordinated with upstream GDT and downstream π-filter for staged surge suppression. Use Value: Handles 1500 W peak pulse without failure, fails short-circuit safely, and maintains <1.0 μA leakage at 23.1 V for low standby power loss. |
Use Scenario: Securing USB-C VBUS and CC lines in docking stations against ESD and hot-swap transients during connector mating. IC Role / Device Role / Timing Role: Fast-response unidirectional clamp on 20 V-rated power delivery paths, placed adjacent to connector per IEC 61000-4-2 layout guidelines. Use Value: Achieves sub-37.5 V clamping at 40 A, preserving USB PD controller functionality and meeting USB-IF ESD robustness requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | Lower PPPM (400 W), higher VC (38.9 V at 10.3 A), SMA package (smaller thermal mass) | Limited to lower-energy threats (IEC 61000-4-2 ESD only); not suitable for lightning or motor-switching transients. | Select SMAJ24A only for space-constrained consumer electronics where 1500 W rating is unnecessary. |
| SMCJ24A | Same SMC package, identical VWM/VBR/VC, but rated for 1500 W and AEC-Q101 qualified only in HE3/HM3 variants (not M3/E3) | SMCJ24A-E3 lacks AEC-Q101 validation; HM3 variant matches SM15T27AHM3_A/I qualification but uses different base P/N structure. | SMCJ24AHM3_A/I is functionally identical and pin-compatible; choose based on distributor stock and traceability requirements. |
Compared with SMAJ24A and SMCJ24AHM3_A/I, the SM15T27AHM3_A/I offers guaranteed AEC-Q101 qualification in its standard HM3 ordering code, tighter VBR tolerance (±5% vs ±10%), and documented 1500 W capability with 0.31" × 0.31" pad layout - making it preferred for automotive and industrial designs requiring audit-ready compliance.
Availability
SM15T27AHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O protection, and telecom power interface designs requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for SM15T27AHM3_A/I 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 optoelectronics with emphasis on reliability and application-specific performance.
The SM15T Series was developed for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where 1500 W clamping, AEC-Q101 validation, and low-inductance SMC packaging are mandatory.
FAQ
What is the clamping voltage of SM15T27AHM3_A/I at its rated peak pulse current?
The SM15T27AHM3_A/I has a maximum clamping voltage (VC) of 37.5 V at 40.0 A peak pulse current with a 10/1000 μs waveform. This value is measured under standardized test conditions with 0.31" × 0.31" copper pads and defines the upper voltage limit imposed on protected circuits during surge events. The SM15T27AHM3_A/I maintains this clamping performance across its qualified operating temperature range.
Is SM15T27AHM3_A/I qualified for automotive applications?
Yes, SM15T27AHM3_A/I is AEC-Q101 qualified, as confirmed by the HM3 suffix and documentation in Vishay's 88380 datasheet. It undergoes stress testing including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev G. The SM15T27AHM3_A/I is intended for under-hood and chassis-mounted automotive electronics where reliability under thermal and mechanical stress is critical.
What does the "HM3" suffix indicate in SM15T27AHM3_A/I?
The "HM3" suffix in SM15T27AHM3_A/I denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance and AEC-Q101 qualification. It distinguishes this variant from commercial-grade E3/M3 versions and confirms compliance with automotive material and reliability standards. The SM15T27AHM3_A/I meets UL 94 V-0 flammability and is rated for reflow up to 260 °C.
How does SM15T27AHM3_A/I differ from SM15T27AHE3_A/I?
The SM15T27AHM3_A/I is halogen-free and AEC-Q101 qualified, whereas SM15T27AHE3_A/I is RoHS-compliant and AEC-Q101 qualified but not halogen-free. Both share identical electrical specs (VWM = 23.1 V, VBR = 25.7–28.4 V, VC = 37.5 V), same SMC package, and thermal characteristics. The SM15T27AHM3_A/I adds halogen-free molding compound to meet stricter environmental mandates in Tier 1 automotive supply chains.
What is the maximum reverse leakage current for SM15T27AHM3_A/I at rated VWM?
The SM15T27AHM3_A/I exhibits a maximum reverse leakage current (ID) of 1.0 μA at its rated stand-off voltage of 23.1 V and 25 °C ambient temperature. This low leakage ensures minimal power loss in always-on automotive circuits and avoids false triggering in high-impedance sensor bias networks. The SM15T27AHM3_A/I maintains leakage below 10 μA up to +85 °C per datasheet characterization.
SM15T27AHM3_A/I 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:
- 1
- Bidirectional Channels:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SM15T27AHM3_A/I FAQ
1.How can I place an order for SM15T27AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T27AHM3_A/I 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 SM15T27AHM3_A/I reliable?
The price and inventory of SM15T27AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T27AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SM15T27AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T27AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T27AHM3_A/I?
SM15T27AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T27AHM3_A/I 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 SM15T27AHM3_A/I?
For technical support, including SM15T27AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T27AHM3_A/I requirements.
6.How does Aetrix verify that SM15T27AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SM15T27AHM3_A/I 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 SM15T27AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SM15T27AHM3_A/I?
All SM15T27AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM15T27AHM3_A/I, 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 SM15T27AHM3_A/I part is unused and in its original packaging.
Return procedure for SM15T27AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T27AHM3_A/I Tags
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