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Vishay General Semiconductor - Diodes Division SM15T36CAHE3_A/H
- Part No.:
- SM15T36CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T36CAHE3_A/H.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,761
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Product details
Overview
SM15T36CAHE3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode 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 signal lines and power rails against lightning-induced and switching transients.
For engineers reviewing the SM15T36CAHE3_A/H datasheet, SM15T36CAHE3_A/H pinout, SM15T36CAHE3_A/H application, or SM15T36CAHE3_A/H equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, 30 A IPPM, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage VBR min/max = 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 low-inductance SMC package enables fast response to transients while maintaining stable clamping under high dv/dt conditions.
The device features glass-passivated junction construction, meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), and is qualified to AEC-Q101 for automotive use. Failure mode under overstress is short-circuit, ensuring system-level fault containment without open-circuit risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working margin below clamping threshold |
| VBR (min/max) | 34.2 V / 37.8 V at 1 mA - Confirmed breakdown range ensures reliable turn-on during overvoltage events without premature conduction |
| VC @ IPPM | 49.9 V at 30 A (10/1000 μs) - Clamping voltage limits downstream IC stress; 19.1 V overhead above VWM enables effective protection margin |
| PPPM | 1500 W - Peak pulse power handling capability supports lightning surge immunity per IEC 61000-4-5 (Level 4) |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance determines derating requirements for sustained power dissipation |
| TJ max | +150 °C - Maximum junction temperature rating allows operation in under-hood automotive environments |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Accepts surge current in either direction; symmetrical terminal function eliminates orientation dependency during placement |
| Cathode | Transient current exit point (bidirectional) | Completes low-impedance path to ground or reference rail; identical electrical role as Anode due to bidirectional design |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces requiring long-term reliability under thermal cycling and vibration |
| 1500 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 4 kV line-to-ground in systems with source impedance ≥2 Ω |
| Low clamping ratio (VC/VWM = 1.62) | Minimizes voltage overshoot during transient suppression, protecting 3.3 V and 5 V logic interfaces without additional series impedance |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without moisture sensitivity concerns, reducing manufacturing yield loss in high-volume SMT lines |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and LIN interface ICs in vehicle body control modules from load dump and ESD events. IC Role / Device Role: Bidirectional clamping element placed across differential signal pair or supply rail to shunt transient energy. Use Value: Maintains signal integrity during 10/1000 μs surges up to 30 A while preserving <1 μA leakage at 30.8 V standby voltage. |
Use Scenario: Safeguarding analog input channels (4–20 mA, 0–10 V) in programmable logic controllers exposed to motor drive noise. IC Role / Device Role: Parallel-connected TVS absorbing inductive kickback from solenoid drivers and relay coils. Use Value: Limits transient voltage to ≤49.9 V, preventing damage to precision ADC front-ends and op-amp buffers. |
| Telecom Power Rail Protection | Consumer USB Port ESD Suppression |
Use Scenario: Securing 48 V DC power inputs in PoE-powered network switches against lightning-induced surges on Ethernet cables. IC Role / Device Role: Primary overvoltage clamp on secondary-side DC bus, coordinated with upstream MOVs and fuses. Use Value: Delivers 1500 W pulse handling with 75 °C/W thermal resistance, enabling compact heatsink-free layout in space-constrained chassis. |
Use Scenario: Adding secondary-level surge protection on VBUS lines of USB-C ports in smart home hubs and set-top boxes. IC Role / Device Role: Fast-response bidirectional suppressor placed between connector and USB power delivery controller. Use Value: Clamps 8/20 μs surges to 64.3 V at 156 A, meeting IEC 61000-4-2 Level 4 (±15 kV air) without compromising insertion loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CA | Lower peak power (400 W), same VWM (36 V), higher clamping voltage (60.0 V @ 6.7 A) | Suitable for lower-energy threats (IEC 61000-4-2 ESD only); not recommended for lightning-survivable designs | Select SMAJ36CA only when system-level surge testing does not exceed 1 kV line-to-ground and board space is constrained. |
| 1.5KE36CA | Higher peak power (1500 W), axial-leaded DO-201 package, slower response due to higher parasitic inductance | Requires through-hole mounting; incompatible with fully SMT production; unsuitable for high-frequency signal lines | Choose 1.5KE36CA only for prototyping or legacy through-hole designs where rework tolerance outweighs automated assembly needs. |
Compared with SMAJ36CA and 1.5KE36CA, SM15T36CAHE3_A/H delivers identical 1500 W surge capacity in an AEC-Q101-qualified SMC package with superior thermal performance (RθJA = 75 °C/W vs. >100 °C/W for axial types) and tighter clamping (49.9 V vs. 60.0 V), making it optimal for automotive and industrial SMT deployments.
Availability
SM15T36CAHE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and telecom infrastructure requiring stable component supply with full traceability and lifecycle management.
Supply support for SM15T36CAHE3_A/H 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, efficiency, and application-specific optimization.
The SM15T Series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 compliance and 1500 W surge capability are mandatory.
FAQ
What is the clamping voltage of SM15T36CAHE3_A/H at its rated peak pulse current?
The SM15T36CAHE3_A/H has a maximum clamping voltage (VC) of 49.9 V at 30 A peak pulse current with a 10/1000 μs waveform. This value is measured under standardized test conditions per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events. The SM15T36CAHE3_A/H maintains this clamping performance across its specified operating temperature range.
Is SM15T36CAHE3_A/H suitable for automotive applications?
Yes, SM15T36CAHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use with suffix "HE3". It meets stringent reliability requirements for under-hood and cabin electronics, including thermal cycling, humidity resistance, and mechanical shock. The SM15T36CAHE3_A/H is commonly deployed in ADAS camera modules, infotainment power supplies, and body control unit I/O protection.
What does the "CA" suffix indicate in SM15T36CAHE3_A/H?
The "CA" suffix in SM15T36CAHE3_A/H denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both forward and reverse directions. Unlike unidirectional variants (e.g., SM15T36A), the SM15T36CAHE3_A/H has no polarity marking and functions identically regardless of voltage polarity applied across its terminals.
What is the standoff voltage (VWM) of SM15T36CAHE3_A/H and how is it used in circuit design?
The standoff voltage (VWM) of SM15T36CAHE3_A/H is 30.8 V - the maximum DC or continuous AC voltage that can be applied without triggering significant leakage current (>1.0 μA). In circuit design, VWM must exceed the normal operating voltage of the protected line by at least 10–20 % to prevent false triggering while allowing sufficient margin below the clamping voltage of 49.9 V. For a 24 V automotive rail, SM15T36CAHE3_A/H is appropriately selected.
Does SM15T36CAHE3_A/H require a heatsink for standard operation?
No, SM15T36CAHE3_A/H is designed for surface-mount operation without external heatsinking under typical transient duty cycles. Its RθJA of 75 °C/W and 6.5 W steady-state power dissipation rating allow adequate thermal management on standard 0.31" × 0.31" copper pads per terminal. Heatsinking is only necessary for repetitive surge events exceeding 1 Hz or ambient temperatures above 85 °C.
SM15T36CAHE3_A/H 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:
- -
- 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_A/H FAQ
1.How can I place an order for SM15T36CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T36CAHE3_A/H 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_A/H reliable?
The price and inventory of SM15T36CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T36CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SM15T36CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T36CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T36CAHE3_A/H?
SM15T36CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T36CAHE3_A/H 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_A/H?
For technical support, including SM15T36CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T36CAHE3_A/H requirements.
6.How does Aetrix verify that SM15T36CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SM15T36CAHE3_A/H 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_A/H meets industry standards.
7.What is the process for return or replacement of SM15T36CAHE3_A/H?
All SM15T36CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM15T36CAHE3_A/H, 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_A/H part is unused and in its original packaging.
Return procedure for SM15T36CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T36CAHE3_A/H Tags
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