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Vishay General Semiconductor - Diodes Division SM15T36A-M3/57T
- Part No.:
- SM15T36A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T36A-M3/57T.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,740
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Product details
Overview
SM15T36A-M3/57T 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), 30.8 V stand-off voltage (VWM), 34.2–37.8 V breakdown voltage (VBR at 1 mA), and 49.9 V maximum clamping voltage (VC) at 30 A peak pulse current. It protects MOSFETs and signal lines in automotive sensor units against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T36A-M3/57T datasheet, SM15T36A-M3/57T pinout, SM15T36A-M3/57T application, or SM15T36A-M3/57T equivalent, key selection criteria include verified clamping performance at 30 A, halogen-free RoHS-compliant construction (M3 suffix), unidirectional polarity with cathode band marking, and AEC-Q101 qualification readiness via HM3 variant.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under transient overvoltage exceeding VWM = 30.8 V, it avalanches at VBR = 34.2–37.8 V and clamps to ≤49.9 V at IPPM = 30 A (10/1000 μs). Its glass-passivated junction ensures stable leakage (<1 μA at VWM) and low dynamic impedance.
Designed for high-source-impedance threat environments, it sustains 200 A non-repetitive forward surge (10 ms half-sine) and derates linearly above TA = 25 °C with RθJA = 75 °C/W. Failure mode under overstress is short-circuit - a fail-safe behavior critical for downstream IC protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - Maximum continuous reverse operating voltage before conduction begins; sets system-level DC margin for protected line. |
| VBR (min/max) | 34.2 V / 37.8 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above normal operating voltage. |
| VC @ IPPM | 49.9 V at 30 A (10/1000 μs) - Clamped voltage seen by downstream circuitry during worst-case transient; defines protection window. |
| PPPM | 1500 W - Peak transient energy absorption capability; validates suitability for lightning and motor-switching threats. |
| IFSM | 200 A - Single half-sine surge rating (10 ms); supports robustness against repetitive inductive turn-off events. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal requirement; compatible with automated placement. |
Pinout & Package
SMC (DO-214AB) package: molded plastic case with matte tin-plated leads, MSL Level 1 (260 °C reflow peak), UL 94 V-0 flammability rating. Cathode indicated by band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point for unidirectional TVS | Connected to ground or low-impedance return path; completes clamping loop during overvoltage event. |
| Cathode | High-side connection point (marked with band) | Connected to protected line (e.g., sensor supply or signal trace); conducts avalanche current into anode when VIN > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Validated energy handling for IEC 61000-4-5 Level 4 surges without degradation. |
| Glass passivated chip junction | Ensures <1 μA reverse leakage at VWM, minimizing standby power loss in battery-powered systems. |
| Low inductance layout | Enables sub-50 ns response time; critical for protecting fast-edge digital interfaces and microcontroller I/O. |
| Halogen-free, RoHS-compliant (M3 suffix) | Fulfills IPC-1752A material declaration requirements and EU environmental compliance mandates. |
| AEC-Q101 qualification path | HM3 variant available; supports functional safety validation for automotive ECUs and ADAS sensor modules. |
Applications
| Automotive Sensor Protection | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine control modules exposed to load-dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between sensor VCC rail and chassis ground. Use Value: Limits transient excursions to ≤49.9 V, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding PLC analog input channels connected to 4–20 mA current loops near contactors and solenoid drivers. IC Role / Device Role / Timing Role: Standoff-rated TVS on signal line entry point, upstream of precision op-amp front-end. Use Value: Absorbs 1500 W switching spikes without degrading baseline accuracy (leakage <1 μA at 30.8 V). |
| Telecom Power Supply Input | Consumer Appliance Control Board |
Use Scenario: Secondary-side DC input protection for PoE-powered network switches subjected to induced surges on Ethernet cabling. IC Role / Device Role / Timing Role: Primary overvoltage clamp on +48 V bias rail feeding DC/DC converters. Use Value: Clamps to 49.9 V within nanoseconds, preserving converter enable logic and avoiding brownout resets. |
Use Scenario: Shielding microcontroller GPIOs driving relays and triacs in smart washing machine main control boards. IC Role / Device Role / Timing Role: Localized TVS on each relay coil drive node to suppress back-EMF. Use Value: Withstands 200 A surge (10 ms), eliminating need for external snubbers and reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/57T | Lower PPPM = 400 W; same VWM/VBR; SMA package (smaller thermal mass) | Not suitable for lightning-level threats; limited to board-level ESD and low-energy switching noise | Select only if system-level threat profile excludes IEC 61000-4-5 and peak current remains <10 A. |
| SMCJ36A-M3/57T | Same PPPM = 1500 W, identical VWM/VBR/VC, but larger SMC package with higher IPPM rating (33.3 A vs. 30 A) | Compatible footprint but requires revised pad layout; better thermal margin in sustained surge conditions | Prefer when PCB layout allows larger copper area and long-duration surge immunity is prioritized. |
Compared with SMAJ36A-E3/57T and SMCJ36A-M3/57T, SM15T36A-M3/57T delivers optimal balance of 1500 W surge capacity, compact SMC footprint, and halogen-free compliance-making it ideal for space-constrained automotive and industrial designs requiring validated lightning immunity.
Availability
SM15T36A-M3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O terminals, and telecom power supply inputs requiring stable component supply with full traceability and lifecycle management.
Supply support for SM15T36A-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, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SM15T Series was engineered specifically for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where failure-mode predictability and AEC-Q101 readiness are mandatory.
FAQ
What is the clamping voltage of SM15T36A-M3/57T at its rated peak pulse current?
The SM15T36A-M3/57T has a maximum clamping voltage (VC) of 49.9 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 30 A. This value is measured per Figure 1 in Vishay document 88380 and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SM15T36A-M3/57T suitable for automotive applications requiring AEC-Q101 qualification?
The SM15T36A-M3/57T itself is commercial-grade; however, the HM3 variant (e.g., SM15T36AHM3/57T) is AEC-Q101 qualified. The M3 suffix indicates halogen-free RoHS compliance, and the underlying die design supports qualification-making SM15T36A-M3/57T a direct drop-in for prototyping before transitioning to HM3 for production.
What does the "M3" suffix mean in SM15T36A-M3/57T?
The "M3" suffix in SM15T36A-M3/57T denotes halogen-free, RoHS-compliant construction per Vishay's material categorization standard. It also signifies compliance with JESD201 Class 2 whisker resistance and solderability per J-STD-002 and JESD22-B102-critical for lead-free assembly in high-reliability manufacturing.
How does SM15T36A-M3/57T differ from SM15T36CA-M3/57T?
SM15T36A-M3/57T is unidirectional with cathode band marking, while SM15T36CA-M3/57T is bidirectional (no polarity marking) and uses "CA" suffix. Both share identical VWM, VBR, and PPPM, but the unidirectional version offers lower leakage (<1 μA) and is preferred for DC-biased lines like power rails; the bidirectional variant suits AC-coupled signal paths.
What is the thermal resistance of SM15T36A-M3/57T, and how does it affect layout?
SM15T36A-M3/57T 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 TJ ≤ 150 °C under 6.5 W steady-state dissipation, designers must allocate ≥64 mm² of 2-oz copper per pad and avoid thermal bottlenecks in the ground plane.
SM15T36A-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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SM15T36A-M3/57T FAQ
1.How can I place an order for SM15T36A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T36A-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 SM15T36A-M3/57T reliable?
The price and inventory of SM15T36A-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 SM15T36A-M3/57T is usually 5 days.
3.What payment methods are accepted for SM15T36A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T36A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T36A-M3/57T?
SM15T36A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T36A-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 SM15T36A-M3/57T?
For technical support, including SM15T36A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T36A-M3/57T requirements.
6.How does Aetrix verify that SM15T36A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T36A-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 SM15T36A-M3/57T meets industry standards.
7.What is the process for return or replacement of SM15T36A-M3/57T?
All SM15T36A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T36A-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 SM15T36A-M3/57T part is unused and in its original packaging.
Return procedure for SM15T36A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T36A-M3/57T Tags
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