My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM6T15AHE3/5B
;;2.jpg)
- Part No.:
- SM6T15AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T15AHE3/5B.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,105
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM6T15AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMB (DO-214AA) package, featuring 15 V breakdown voltage (VBR = 14.3–15.8 V at IT = 1.0 mA), 21.2 V maximum clamping voltage (VC) at 28.0 A peak pulse current (IPPM), and 600 W peak pulse power capability with 10/1000 μs waveform. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients in automotive and industrial control systems.
For engineers reviewing the SM6T15AHE3/5B datasheet, SM6T15AHE3/5B pinout, SM6T15AHE3/5B application, or SM6T15AHE3/5B equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 12.8 V stand-off voltage (VWM), 1.0 μA reverse leakage at VWM, and thermal resistance (RθJA = 100 °C/W) for PCB-level thermal design.
Technical Context
The SM6T15AHE3/5B uses a glass-passivated silicon junction to achieve low inductance and fast response to transient overvoltages. Its clamping behavior is defined by a 10/1000 μs test waveform, with VC = 21.2 V at IPPM = 28.0 A and derating above TA = 25 °C per Fig. 2.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads, it meets J-STD-020 MSL Level 1 (260 °C peak reflow), JESD 201 Class 2 whisker resistance, and UL 94 V-0 flammability. Polarity is marked by a cathode band; no marking applies to bidirectional variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.3 V / 15.8 V at IT = 1.0 mA - defines reliable conduction onset under surge conditions |
| VWM | 12.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 21.2 V at 28.0 A (10/1000 μs) - clamping voltage limiting stress on downstream components |
| PPPM | 600 W - peak transient power handling capacity under standardized surge waveform |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, critical for layout pad sizing and airflow planning |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, cathode indicated by band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected circuit ground or low-side reference | Provides return path during clamping; must be routed with low-inductance trace to minimize voltage overshoot |
| Cathode | Current exit terminal in forward bias; marked with band; connects to line being protected | Acts as high-impedance node until VBR exceeded; placement determines clamping reference point |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| 600 W peak pulse power (10/1000 μs) | Supports protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges in 12 V systems |
| Low inductance construction | Minimizes V = L·di/dt overshoot during fast transients (<1 ns rise time), preserving clamping accuracy |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow without moisture-related popcorn failure or delamination |
| Glass-passivated junction | Ensures stable VBR and low leakage over lifetime, even under humidity and thermal stress |
Applications
| Automotive Body Control Module | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting LIN bus transceiver inputs from load dump and inductive kickback in door module ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between LIN line and ground to clamp transients before they reach the transceiver's ESD diodes. Use Value: Limits voltage to ≤21.2 V during 28 A surges, preventing latch-up or permanent damage to the LIN PHY while maintaining signal integrity. |
Use Scenario: Shielding 24 V digital input channels of programmable logic controllers from relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 12.8 V) installed across input terminals to suppress >1 kV transients without false triggering. Use Value: Enables reliable operation in noisy factory environments where 600 W surge immunity prevents nuisance shutdowns and extends system uptime. |
| Automotive Sensor Signal Line | Consumer Appliance Motor Drive |
Use Scenario: Safeguarding analog output lines of pressure/temperature sensors in engine bay applications exposed to alternator ripple and ignition noise. IC Role / Device Role / Timing Role: Low-leakage (1.0 μA at 12.8 V) TVS mounted directly at sensor connector to reduce parasitic capacitance impact on signal bandwidth. Use Value: Maintains <1.0 μA reverse leakage at nominal 12 V supply, avoiding DC offset errors while clamping fast transients up to 21.2 V. |
Use Scenario: Protecting gate drivers and microcontroller I/O pins in smart washing machine motor inverters from MOSFET switching spikes. IC Role / Device Role / Timing Role: Fast-response TVS placed across half-bridge gate-source nodes to absorb Miller-induced voltage spikes during hard switching. Use Value: With 100 °C/W RθJA and +150 °C TJ rating, sustains repeated surge events in thermally constrained motor control PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Same VBR range (14.3–15.8 V), but lower PPPM = 400 W and higher VC = 24.4 V at 24.5 A | Limited to less severe surge environments (e.g., consumer electronics); not AEC-Q101 qualified | Select SMAJ15A only if cost sensitivity outweighs automotive qualification and 600 W headroom requirements. |
| 1.5SMC15A | Same VBR/VC specs, but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm) and higher RθJA ≈ 120 °C/W | Requires more PCB area; less suitable for dense automotive modules; same AEC-Q101 availability (HE3 suffix) | Choose 1.5SMC15A only when higher thermal mass is needed for sustained pulse trains, accepting larger footprint. |
Compared with SMAJ15A and 1.5SMC15A, SM6T15AHE3/5B delivers superior surge margin (600 W vs. 400 W or same-power SMC), tighter thermal performance (100 °C/W), and guaranteed AEC-Q101 compliance in the smallest SMB footprint-making it optimal for space-constrained, high-reliability automotive and industrial designs.
Availability
SM6T15AHE3/5B is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input stages, and sensor interface protection requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SM6T15AHE3/5B 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 high-reliability diodes, rectifiers, and protection devices for demanding industrial and automotive applications.
The SM6T Series was engineered specifically for surface-mount transient suppression in space-constrained, high-surge environments-emphasizing low clamping voltage, AEC-Q101 qualification, and compatibility with automated assembly processes.
FAQ
What is the meaning of the "HE3" suffix in SM6T15AHE3/5B?
The "HE3" suffix in SM6T15AHE3/5B indicates RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this automotive-grade variant from commercial-only versions (e.g., "E3") and confirms compliance with stress testing standards for automotive electronics, including temperature cycling and highly accelerated life testing. SM6T15AHE3/5B is fully traceable to Vishay's qualified production lots.
Does SM6T15AHE3/5B support bidirectional transient suppression?
No, SM6T15AHE3/5B is a unidirectional TVS diode, as confirmed by its part number ending in "A" (not "CA"). It conducts only when reverse-biased beyond VBR; the cathode band marks the terminal that must connect to the line being protected. For bidirectional operation, Vishay specifies variants like SM6T15CAHE3/5B, which have symmetrical clamping in both polarities.
What is the maximum clamping voltage of SM6T15AHE3/5B under standard test conditions?
The maximum clamping voltage (VC) of SM6T15AHE3/5B is 21.2 V, measured at a peak pulse current (IPPM) of 28.0 A using the 10/1000 μs waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range and forms the basis for downstream component voltage rating selection in designs using SM6T15AHE3/5B.
How does the SMB package of SM6T15AHE3/5B affect PCB layout?
The SMB (DO-214AA) package of SM6T15AHE3/5B requires minimum 5.0 mm × 5.0 mm copper pads per terminal for rated 600 W pulse handling, as specified in Vishay's datasheet Figure 2. Its compact 4.57 mm × 3.94 mm footprint enables high-density routing, but thermal vias and adjacent ground planes must be implemented to manage RθJA = 100 °C/W and prevent junction overheating during repeated surges.
Is SM6T15AHE3/5B compatible with lead-free reflow soldering processes?
Yes, SM6T15AHE3/5B is rated for MSL Level 1 per J-STD-020 with a maximum peak reflow temperature of 260 °C, making it fully compatible with standard lead-free reflow profiles. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability requirements, and it passes JESD 201 Class 2 whisker testing-ensuring long-term interconnect reliability in SM6T15AHE3/5B-based assemblies.
SM6T15AHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 28A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMBJ)
SM6T15AHE3/5B FAQ
1.How can I place an order for SM6T15AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T15AHE3/5B 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 SM6T15AHE3/5B reliable?
The price and inventory of SM6T15AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T15AHE3/5B is usually 5 days.
3.What payment methods are accepted for SM6T15AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T15AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T15AHE3/5B?
SM6T15AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T15AHE3/5B 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 SM6T15AHE3/5B?
For technical support, including SM6T15AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T15AHE3/5B requirements.
6.How does Aetrix verify that SM6T15AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SM6T15AHE3/5B 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 SM6T15AHE3/5B meets industry standards.
7.What is the process for return or replacement of SM6T15AHE3/5B?
All SM6T15AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SM6T15AHE3/5B, 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 SM6T15AHE3/5B part is unused and in its original packaging.
Return procedure for SM6T15AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T15AHE3/5B Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
