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Vishay General Semiconductor - Diodes Division SM15T36A-E3/57T
- Part No.:
- SM15T36A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T36A-E3/57T.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:790
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Product details
Overview
SM15T36A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount 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. It protects MOSFETs and signal lines in automotive power electronics against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T36A-E3/57T datasheet, SM15T36A-E3/57T pinout, SM15T36A-E3/57T application, or SM15T36A-E3/57T equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, RoHS-compliant commercial-grade construction, low-inductance SMC package, and AEC-Q101 qualification availability via HE3 suffix variants.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, conducting only when reverse voltage exceeds VBR (34.2–37.8 V). Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and robust surge handling up to 200 A IFSM (10 ms half-sine).
Thermal performance is defined by RθJA = 75 °C/W (typ.) and RθJL = 15 °C/W (typ.), requiring minimum 8.0 mm × 8.0 mm copper pads per terminal for full 1500 W rating. Failure mode under overstress is short-circuit, consistent with industrial transient protection requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - Maximum continuous reverse operating voltage before significant leakage begins |
| VBR (min/max) | 34.2 V / 37.8 V at 1.0 mA - Ensures reliable turn-on above system operating voltage with margin |
| VC @ IPPM | 49.9 V at 30.0 A (10/1000 μs) - Limits transient voltage seen by downstream ICs to safe levels |
| PPPM | 1500 W - Withstands high-energy lightning surges on I/O or power lines without degradation |
| TJ max | +150 °C - Supports operation in under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - Low-profile, surface-mountable package compatible with automated assembly |
Pinout & Package
SM15T36A-E3/57T uses the standard SMC (DO-214AB) package: cathode-marked end (band) indicates the P-side of the unidirectional PN junction; anode is unmarked. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, with MSL level 1 rating (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal PN junction (reverse-biased during clamping) | Connected to protected line; conducts surge current to ground when VREV > VBR |
| Anode (unmarked end) | Cathode of internal PN junction | Typically tied to system ground or low-impedance return path for transient energy dissipation |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables protection against IEC 61000-4-5 Level 4 (4 kV) surges without derating on standard PCB layouts |
| Glass passivated chip junction | Provides stable VBR tolerance (±5%), low leakage (<1 μA), and long-term reliability under thermal cycling |
| Low inductance design | Minimizes voltage overshoot during fast transients (e.g., ESD or switching spikes), improving clamping response |
| RoHS-compliant, commercial-grade (E3 suffix) | Meets environmental compliance for global consumer and industrial shipments without halogen restrictions |
Applications
| Automotive Power Distribution | Industrial Motor Drive I/O Protection |
|---|---|
Use Scenario: Protecting 24 V DC power rails and gate drivers in vehicle body control modules against load-dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between supply rail and chassis ground to clamp transients exceeding 30.8 V. Use Value: Prevents damage to MCU power supplies and MOSFET gate oxides during 12 V/24 V system switching events. | Use Scenario: Safeguarding analog sensor inputs and digital communication lines (e.g., RS-485) in PLC I/O modules exposed to motor contactor noise. IC Role / Device Role / Timing Role: Parallel-connected clamping device on signal lines referenced to local ground plane. Use Value: Limits induced voltages to <49.9 V during 10/1000 μs surges, preserving ADC accuracy and UART integrity. |
| Telecom Power Supply Input | Consumer Appliance Mainboard Protection |
Use Scenario: Front-end protection of AC/DC adapter secondary-side outputs feeding PoE-powered equipment. IC Role / Device Role / Timing Role: Standoff-rated TVS on +VOUT rail to absorb coupling from primary-side transients or external surges. Use Value: Maintains regulated output stability during 1.2/50 μs line surges by clamping before downstream LDOs saturate. | Use Scenario: Overvoltage suppression on microcontroller VDD pins and relay coil driver outputs in smart home hubs. IC Role / Device Role / Timing Role: Localized transient shunt adjacent to high-di/dt switching nodes. Use Value: Eliminates need for external snubbers by absorbing 200 A surge energy (IFSM) from relay coil collapse. |
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 (Vishay) | 600 W PPPM, SMA package, same VWM/VBR, higher RθJA (110 °C/W) | Limited to lower-energy threats (IEC 61000-4-2 ESD only); not suitable for lightning-level surges | Select when board space is constrained and surge threat level is ≤600 W |
| 1.5KE36A (ON Semiconductor) | Through-hole DO-201 package, 1500 W, same VWM/VBR, but no RoHS/E3 marking or MSL-1 rating | Requires wave soldering; incompatible with fine-pitch SMT lines and lead-free reflow profiles | Select only for legacy through-hole designs where automated SMT placement is unavailable |
Compared with SMAJ36A-E3/57T and 1.5KE36A, SM15T36A-E3/57T delivers identical clamping performance in a RoHS-compliant, MSL-1 SMT package optimized for high-volume automotive and industrial assembly-without sacrificing 1500 W surge capability.
Availability
SM15T36A-E3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive I/O protection, and telecom power supply input applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SM15T36A-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, TVS devices, and optoelectronics with emphasis on reliability, power handling, and automotive qualification.
The SM15T Series is designed specifically for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom systems where 1500 W surge immunity and AEC-Q101 readiness are mandatory.
FAQ
What is the maximum clamping voltage of SM15T36A-E3/57T under standard test conditions?
The SM15T36A-E3/57T 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 per Fig. 1 and Fig. 3 in Vishay document 88380 and defines the upper voltage limit imposed on protected circuits during surge events. The SM15T36A-E3/57T maintains this clamping performance across its specified operating temperature range.
Is SM15T36A-E3/57T suitable for automotive applications requiring AEC-Q101 qualification?
No-SM15T36A-E3/57T carries the E3 suffix, indicating RoHS-compliant commercial grade only. For AEC-Q101 qualification, the correct part is SM15T36AHE3_A/H or SM15T36AHM3_A/H (HE3/HM3 suffixes). The SM15T36A-E3/57T itself is not AEC-Q101 qualified, though it shares identical electrical specs and package with qualified variants.
What does the "57T" in SM15T36A-E3/57T indicate?
The "57T" in SM15T36A-E3/57T denotes the preferred package code for 7-inch diameter plastic tape-and-reel delivery, containing 850 units per reel. This packaging format is optimized for high-speed pick-and-place machines and complies with EIA-481 standards. The SM15T36A-E3/57T is not supplied in bulk or cut tape unless specially ordered.
How does the thermal resistance of SM15T36A-E3/57T affect its power derating?
With RθJA = 75 °C/W (typ.), the SM15T36A-E3/57T must be mounted on 8.0 mm × 8.0 mm copper pads per terminal to achieve full 1500 W rating at TA = 25 °C. Above 25 °C ambient, power derating follows Fig. 2 in document 88380: at 85 °C ambient, SM15T36A-E3/57T supports ~850 W peak pulse power. Derating is linear and critical for sustained surge duty cycles.
Can SM15T36A-E3/57T be used in bidirectional configurations?
No-SM15T36A-E3/57T is unidirectional, as indicated by the "A" suffix (vs. "CA" for bidirectional). Its cathode band marks the P-side; applying reverse bias beyond VWM triggers clamping, while forward bias allows conduction like a standard diode. For bidirectional protection, use SM15T36CA-E3/57T, which has symmetric breakdown in both directions.
SM15T36A-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:
- 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-E3/57T FAQ
1.How can I place an order for SM15T36A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T36A-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 SM15T36A-E3/57T reliable?
The price and inventory of SM15T36A-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 SM15T36A-E3/57T is usually 5 days.
3.What payment methods are accepted for SM15T36A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T36A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T36A-E3/57T?
SM15T36A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T36A-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 SM15T36A-E3/57T?
For technical support, including SM15T36A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T36A-E3/57T requirements.
6.How does Aetrix verify that SM15T36A-E3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T36A-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 SM15T36A-E3/57T meets industry standards.
7.What is the process for return or replacement of SM15T36A-E3/57T?
All SM15T36A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T36A-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 SM15T36A-E3/57T part is unused and in its original packaging.
Return procedure for SM15T36A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T36A-E3/57T Tags
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