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Vishay General Semiconductor - Diodes Division SM15T36CAHE3/57T
- Part No.:
- SM15T36CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T36CAHE3/57T.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,607
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Product details
Overview
SM15T36CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 36 V standoff voltage (VWM), and clamping voltage of 49.9 V at 30 A peak pulse current. It provides robust protection for automotive-grade sensor signal lines against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T36CAHE3/57T datasheet, SM15T36CAHE3/57T pinout, SM15T36CAHE3/57T application, or SM15T36CAHE3/57T equivalent, this AEC-Q101 qualified TVS diode delivers verified bidirectional clamping performance, low-inductance SMC packaging, and validated thermal resistance (RθJL = 15 °C/W) for high-reliability automotive and industrial I/O line protection.
Technical Context
This bidirectional TVS operates symmetrically across both polarities with breakdown voltage (VBR) min/max of 34.2 V / 37.8 V at 1 mA test current and maximum reverse leakage (ID) ≤ 1.0 μA at 30.8 V standoff. Its clamping behavior is characterized under standardized 10/1000 μs waveform conditions, with guaranteed clamping voltage ≤ 49.9 V at IPPM = 30 A.
Designed for surface-mount automated assembly, it features glass-passivated junction, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak. Failure mode under overstress is short-circuit, consistent with IEC 61000-4-5 surge immunity requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30.8 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 34.2 V to 37.8 V at 1 mA - Confirmed symmetric breakdown in both directions; ensures predictable turn-on during bidirectional transients |
| VC (Clamping Voltage) | 49.9 V at 30 A (10/1000 μs) - Measured peak voltage across device during surge; directly limits stress on downstream ICs like CAN transceivers or ADC inputs |
| PPPM (Peak Pulse Power) | 1500 W - Sustained energy absorption capability under standard lightning-surge waveform; validates suitability for IEC 61000-4-5 Level 4 compliance |
| TJmax | +150 °C - Maximum junction temperature rating; enables operation in under-hood automotive environments with minimal derating |
| RθJL | 15 °C/W - Low junction-to-lead thermal resistance; supports reliable power dissipation without external heatsinking in PCB-mounted applications |
Pinout & Package
Package: SMC (DO-214AB), molded case meeting UL 94 V-0 flammability rating; dimensions 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); matte tin-plated leads; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | One terminal of symmetrical P-N junction; conducts during positive-going surges relative to cathode reference |
| Cathode | Transient current entry (negative half-cycle) | Second terminal of symmetrical P-N junction; conducts during negative-going surges; functionally identical to anode in bidirectional mode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and ADAS sensor interfaces; supports PPAP documentation and long-term reliability under thermal cycling |
| 1500 W peak pulse power (10/1000 μs) | Enables protection against severe lightning-induced surges per IEC 61000-4-5; exceeds typical 1 kV/500 A test requirements for industrial fieldbus lines |
| Low clamping ratio (VC/VWM ≈ 1.62) | Minimizes overvoltage stress on protected circuitry; critical for safeguarding 3.3 V or 5 V logic interfaces without additional series impedance |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free assembly without moisture sensitivity concerns; eliminates pre-bake requirement in high-volume SMT lines |
| Glass-passivated junction | Ensures stable leakage and breakdown characteristics over lifetime; prevents degradation from humidity or contamination in harsh under-hood environments |
Applications
| Automotive Sensor Protection | Industrial Fieldbus Interface |
|---|---|
Use Scenario: Protecting LIN/CAN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine control units exposed to load-dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to shunt transient energy before reaching sensitive interface ICs. Use Value: Maintains signal integrity during ISO 7637-2 Pulse 5a (load dump) events by limiting voltage to ≤ 49.9 V, preventing latch-up or permanent damage to 5 V-rated transceivers. |
Use Scenario: Safeguarding RS-485/RS-422 transceiver I/O pins in programmable logic controllers subjected to EFT/burst noise and lightning surges on factory floor cabling. IC Role / Device Role / Timing Role: Fast-response transient suppressor mounted at connector entry point to divert surge current away from PHY layer ICs. Use Value: Clamps 10/1000 μs surges to ≤ 49.9 V within nanoseconds, preserving data integrity during IEC 61000-4-4 Level 4 (4 kV) and IEC 61000-4-5 Level 3 (1 kV) tests. |
| Consumer Appliance Motor Control | Telecom Power Input Stage |
Use Scenario: Shielding microcontroller GPIOs and gate drivers in smart washing machine motor inverters from back-EMF spikes generated by brushless DC motor commutation. IC Role / Device Role / Timing Role: Parallel-connected TVS across MOSFET gate-source or microcontroller input pins to absorb repetitive switching transients. Use Value: Withstands ≥ 1000 surges at rated IPPM due to low thermal resistance (RθJL = 15 °C/W), ensuring longevity in high-duty-cycle appliance applications. |
Use Scenario: Protecting AC/DC adapter primary-side rectifier outputs and secondary-side DC bus rails in VoIP phones and DSL modems against AC line surges and induced transients. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across bulk capacitor terminals to prevent overvoltage failure during fast-rising line transients. Use Value: 30.8 V VWM allows direct placement on 24 V DC distribution rails while maintaining <1 μA leakage, minimizing standby power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CA-E3/57T | 600 W peak pulse power (10/1000 μs); same VWM (30.8 V) and VC (58.1 V at 10.3 A); SMA package (smaller footprint, higher RθJA) | Limited to lower-energy threats (IEC 61000-4-4 Level 3); unsuitable for automotive load-dump where 1500 W is required | Select when space-constrained layouts prioritize footprint over surge margin; verify IPPM derating for target threat level. |
| SMCJ36CAHE3/57T | 3000 W peak pulse power (10/1000 μs); identical VWM, VBR, and VC; same SMC package but higher surge rating and slightly higher RθJL (12 °C/W) | Overqualified for most 1500 W use cases; adds cost and board area without functional benefit unless legacy design requires margin expansion | Choose only if future-proofing against escalated surge standards or known system-level coupling paths exceeding 1500 W. |
Compared with SMAJ36CA-E3/57T, SM15T36CAHE3/57T delivers double the surge energy handling in the same SMC footprint; versus SMCJ36CAHE3/57T, it offers optimal cost-performance balance for AEC-Q101-compliant 1500 W protection without over-engineering.
Availability
SM15T36CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial fieldbus nodes, consumer appliance motor controls, and telecom power input stages requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SM15T36CAHE3/57T 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, efficiency, and application-specific optimization.
The SM15T Series is engineered for high-energy transient suppression in automotive, industrial, and telecom systems where AEC-Q101 qualification, precise clamping, and SMC-package manufacturability are mandatory design requirements.
FAQ
What does the "CA" suffix indicate in SM15T36CAHE3/57T?
The "CA" suffix in SM15T36CAHE3/57T denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both forward and reverse directions. This is confirmed by identical VBR min/max values (34.2 V / 37.8 V) and absence of polarity marking on the SMC package-critical for protecting AC-coupled or differential signal lines where voltage polarity reverses.
Is SM15T36CAHE3/57T suitable for automotive applications?
Yes, SM15T36CAHE3/57T is AEC-Q101 qualified, as indicated by the "HE3" suffix and documented in Vishay's ordering information table. It meets automotive reliability requirements including temperature cycling, humidity testing, and mechanical shock, making it appropriate for engine control units, body electronics, and ADAS sensor modules where transient immunity is mandated.
What is the clamping voltage of SM15T36CAHE3/57T at its rated peak pulse current?
The clamping voltage of SM15T36CAHE3/57T is 49.9 V at 30 A peak pulse current under the standardized 10/1000 μs waveform, per Vishay's Electrical Characteristics table. This value is measured across both terminals during surge conduction and defines the maximum voltage imposed on protected circuitry during worst-case transient events.
How does the SMC (DO-214AB) package of SM15T36CAHE3/57T affect thermal performance?
The SMC package of SM15T36CAHE3/57T provides a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W, enabling efficient heat transfer to PCB copper pads without external heatsinks. Its 0.31" × 0.31" pad layout recommendation ensures adequate thermal mass for repeated surge dissipation, supporting sustained operation in automotive under-hood environments up to +125 °C ambient.
Can SM15T36CAHE3/57T replace unidirectional TVS diodes in existing designs?
No-SM15T36CAHE3/57T is strictly bidirectional and lacks polarity marking, so it cannot substitute for unidirectional TVS diodes (e.g., SM15T36A variants) in circuits relying on DC bias or asymmetric protection schemes. Direct replacement requires verification that the application demands symmetrical clamping and that no forward-conduction path exists outside the intended transient event window.
SM15T36CAHE3/57T 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:
- -
- Bidirectional Channels:
- 1
- 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)
SM15T36CAHE3/57T FAQ
1.How can I place an order for SM15T36CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T36CAHE3/57T 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 SM15T36CAHE3/57T reliable?
The price and inventory of SM15T36CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T36CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SM15T36CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T36CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T36CAHE3/57T?
SM15T36CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T36CAHE3/57T 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 SM15T36CAHE3/57T?
For technical support, including SM15T36CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T36CAHE3/57T requirements.
6.How does Aetrix verify that SM15T36CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T36CAHE3/57T 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 SM15T36CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SM15T36CAHE3/57T?
All SM15T36CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T36CAHE3/57T, 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 SM15T36CAHE3/57T part is unused and in its original packaging.
Return procedure for SM15T36CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T36CAHE3/57T Tags
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