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Vishay General Semiconductor - Diodes Division SM15T36AHE3/57T
- Part No.:
- SM15T36AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T36AHE3/57T.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,570
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Product details
Overview
SM15T36AHE3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 30.8 V stand-off voltage (VWM), 34.2–37.8 V breakdown voltage (VBR), and 49.9 V clamping voltage (VC) at 30 A peak pulse current - used to protect automotive sensor signal lines, industrial I/O ports, and MOSFET gate drivers against lightning-induced and switching transients.
For engineers reviewing the SM15T36AHE3/57T datasheet, SM15T36AHE3/57T pinout, SM15T36AHE3/57T application, or SM15T36AHE3/57T equivalent, key selection criteria include verified AEC-Q101 qualification, unidirectional polarity with cathode band marking, low-inductance SMC package, and clamping performance under 10/1000 μs surge conditions per IEC 61000-4-5.
Technical Context
The SM15T36AHE3/57T employs a glass-passivated silicon junction optimized for high-energy transient suppression in automotive and industrial environments. Its thermal resistance (RθJA = 75 °C/W) and junction temperature limit (TJ = 150 °C) support operation on standard PCB copper pads without forced cooling.
It delivers precise clamping at 49.9 V under 30 A (10/1000 μs), with reverse leakage ≤1.0 μA at 30.8 V and peak forward surge capability of 200 A (10 ms half-sine). The device fails short-circuit under overstress, aligning with fail-safe system design requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA; sets upper limit for protected line DC bias. |
| VBR (min/max) | 34.2 V / 37.8 V at 1.0 mA - guaranteed breakdown range ensures consistent turn-on across production lots and temperature. |
| VC @ IPPM | 49.9 V at 30.0 A (10/1000 μs) - defines worst-case voltage seen by downstream IC during standardized surge event. |
| PPPM | 1500 W - peak pulse power handling capacity per IEC 61000-4-5 Level 4 (4 kV), enabling robust protection without derating. |
| TJ max | 150 °C - enables reliable operation in under-hood automotive and high-ambient industrial enclosures. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD per AEC specification. |
| Package | SMC (DO-214AB) - surface-mount outline with 7.75 mm × 6.22 mm footprint, compatible with automated pick-and-place and reflow. |
Pinout & Package
SM15T36AHE3/57T uses the SMC (DO-214AB) package: molded plastic body with matte tin-plated leads, 0.220–0.246 inch (5.59–6.22 mm) width, 0.305–0.320 inch (7.75–8.13 mm) length, and cathode band marking on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (cathode-banded side is opposite) | Connected to ground or low-impedance return path; defines directionality for unidirectional clamping. |
| Cathode | Reverse-biased terminal (marked with band) | Connected to protected line; conducts during overvoltage to shunt surge current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity without external series impedance. |
| Glass-passivated junction | Ensures stable VBR and low leakage (<1 μA) over lifetime and temperature (-65 °C to +150 °C). |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control units, ADAS sensors, and body electronics. |
| Low-inductance SMC package | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, relay bounce) due to sub-1 nH parasitic inductance. |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine compartments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach sensitive input stages. Use Value: Clamps to ≤49.9 V at 30 A, preserving signal integrity while meeting ISO 7637-2 Pulse 1/2a/5a immunity requirements. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers subjected to inductive kickback from solenoid valves and motor contactors. IC Role / Device Role / Timing Role: Front-end transient suppressor on 24 V DC input channels, absorbing 1500 W surges without degradation. Use Value: Withstands repeated 10/1000 μs surges up to 30 A, extending module MTBF and eliminating field failures from switching noise. |
| MOSFET Gate Driver Protection | Telecom Line Interface Protection |
Use Scenario: Shielding high-side N-channel MOSFET gate drivers in DC-DC converters from cross-conduction-induced voltage spikes during bootstrapping. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp between gate and source, activated only during overvoltage events. Use Value: 49.9 V clamping prevents gate oxide breakdown while adding <0.5 ns propagation delay to switching edge. |
Use Scenario: Protecting Ethernet PHY interface pins and RS-485 transceivers in outdoor telecom cabinets subject to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary-level TVS on differential data lines, coordinated with secondary GDT or MOV stages. Use Value: 1500 W rating handles partial energy from 10/700 μs telecom surges per ITU-T K.21, reducing stress on downstream components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/57T | Lower PPPM (400 W), same VWM/VBR, SMA package (smaller footprint, higher RθJA) | Suitable for lower-energy threats (IEC 61000-4-2 ESD only); not recommended for lightning or inductive switching. | Select SMAJ36A-E3/57T only when board space is constrained and surge threat level is limited to ±8 kV contact ESD. |
| 1.5KE36A | Through-hole DO-201 package, identical electrical specs but no AEC-Q101 qualification or MSL Level 1 rating | Acceptable for commercial/industrial use where automotive qualification and reflow compatibility are not required. | Choose 1.5KE36A for cost-sensitive non-automotive designs where manual or wave soldering is used and AEC-Q101 is unnecessary. |
Compared with SMAJ36A-E3/57T and 1.5KE36A, SM15T36AHE3/57T uniquely combines AEC-Q101 qualification, 1500 W surge capability, and SMC reflow compatibility - making it the only option qualified for automotive front-end protection where both high-energy immunity and manufacturing robustness are mandatory.
Availability
SM15T36AHE3/57T is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and telecom infrastructure requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SM15T36AHE3/57T 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, and protection devices with emphasis on reliability, power efficiency, and automotive-grade validation.
The SM15T Series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure modes must be predictable and immunity levels exceed IEC/ISO standards.
FAQ
What is the clamping voltage of SM15T36AHE3/57T at its rated peak pulse current?
The SM15T36AHE3/57T has a maximum clamping voltage (VC) of 49.9 V at 30.0 A peak pulse current with a 10/1000 μs waveform. This value is measured under standardized test conditions per JEDEC and is guaranteed across the full operating temperature range (-65 °C to +150 °C), ensuring predictable protection behavior in real-world surge events.
Is SM15T36AHE3/57T qualified for automotive applications?
Yes, SM15T36AHE3/57T is AEC-Q101 qualified, as indicated by the "HE3" suffix. It has passed stress tests including high-temperature operating life (HTOL), temperature cycling (TC), unbiased highly accelerated stress test (UHAST), and human-body-model ESD (≥8 kV), confirming suitability for under-hood and body-control automotive systems.
What does the "57T" suffix mean in SM15T36AHE3/57T?
The "57T" suffix denotes the preferred packaging configuration: 7-inch diameter plastic tape and reel, containing 850 units per reel. This format supports automated SMT placement and is compatible with standard feeder systems used in high-volume electronics manufacturing.
How does SM15T36AHE3/57T differ from bidirectional TVS diodes like SM15T36CA?
SM15T36AHE3/57T is unidirectional and features a cathode band for polarity identification, while SM15T36CA is bidirectional with no polarity marking. The unidirectional version offers lower leakage (<1.0 μA at VWM) and is intended for DC-biased lines; the bidirectional variant is used on AC or floating signal paths where voltage can swing positive or negative.
What is the thermal resistance of SM15T36AHE3/57T, and how does it affect layout?
SM15T36AHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To maintain safe junction temperatures under repetitive surges, PCB layout must provide minimum pad area and avoid excessive thermal isolation - no additional heatsinking is required for single-event operation.
SM15T36AHE3/57T 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 30A
- 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)
SM15T36AHE3/57T FAQ
1.How can I place an order for SM15T36AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T36AHE3/57T 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 SM15T36AHE3/57T reliable?
The price and inventory of SM15T36AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T36AHE3/57T is usually 5 days.
3.What payment methods are accepted for SM15T36AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T36AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T36AHE3/57T?
SM15T36AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T36AHE3/57T 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 SM15T36AHE3/57T?
For technical support, including SM15T36AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T36AHE3/57T requirements.
6.How does Aetrix verify that SM15T36AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T36AHE3/57T 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 SM15T36AHE3/57T meets industry standards.
7.What is the process for return or replacement of SM15T36AHE3/57T?
All SM15T36AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T36AHE3/57T, 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 SM15T36AHE3/57T part is unused and in its original packaging.
Return procedure for SM15T36AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T36AHE3/57T Tags
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