My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM5S15AHE3_A/I
- Part No.:
- SM5S15AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM5S15AHE3_A/I.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,105
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM5S15AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor in DO-218AB package, rated for 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR) at 5 mA, 3600 W peak pulse power (10/1000 μs), and AEC-Q101 qualified for automotive load dump protection.
For engineers reviewing the SM5S15AHE3_A/I datasheet, SM5S15AHE3_A/I pinout, SM5S15AHE3_A/I application, or SM5S15AHE3_A/I equivalent, this device delivers high-reliability clamping in 175 °C junction environments with low leakage (<10 μA at VWM), low forward voltage (<2.0 V @ 100 A), and MSL Level 1 reflow compatibility.
Technical Context
The SM5S15AHE3_A/I employs passivated anisotropic rectifier technology to achieve stable clamping under repetitive surge stress, with thermal resistance RθJM = 0.45 °C/W enabling efficient heat transfer to the metal heatsink (anode terminal). Its unidirectional polarity and DO-218AB case support high-current transient suppression without reverse conduction.
Designed specifically for ISO7637-2-compliant automotive load dump events, it sustains 500 A peak forward surge current (8.3 ms half-sine) and maintains clamping voltage ≤24.4 V at 150 A IPPM - critical for protecting downstream 12 V system ICs against 30–40 V transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse operating voltage before clamping initiates; defines safe interface with 12 V automotive systems. |
| VBR (min/typ/max) | 16.7 / 17.6 / 18.5 V at 5 mA - tight ±5 % tolerance ensures predictable turn-on across temperature and production lots. |
| VC @ IPPM | 24.4 V at 150 A (10/1000 μs) - clamping voltage limits stress on protected ICs during worst-case surge events. |
| PPPM (10/1000 μs) | 3600 W - enables robust handling of high-energy load dump pulses without degradation. |
| TJ max. | 175 °C - supports operation in engine bay and powertrain modules where ambient temperatures exceed 125 °C. |
| ID @ VWM | <10 μA at 25 °C - minimizes standby power loss and avoids false triggering in low-power sensor circuits. |
| AEC-Q101 | Qualified - meets stress test requirements for automotive-grade reliability including HTGB, HTRB, and TCT. |
Pinout & Package
Package: DO-218AB - molded surface-mount case with integral metal heatsink (anode terminal); cathode marked by polarity band; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink) | Positive terminal / thermal path | Primary heat dissipation surface; must be soldered to copper pour for RθJM = 0.45 °C/W performance. |
| Cathode (Lead 1) | Clamping output / transient return path | Connected to protected circuit ground; carries full surge current during clamping event. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design prevents leakage drift and parameter shift under high-temperature bias stress. |
| MSL Level 1 | Rated for peak reflow up to 245 °C - eliminates moisture-related popcorning during standard SMT assembly. |
| Low VF | <2.0 V at 100 A (300 μs pulse) - reduces forward conduction loss during bidirectional surge recovery phases. |
| ISO7637-2 compliance | Validated for Load Dump Pulse 5a (35 V, 10 ms exponential) - meets OEM-level automotive EMC requirements. |
| HE3 suffix | Meets JESD201 Class 2 whisker resistance - ensures long-term solder joint integrity in vibration-prone environments. |
Applications
| Automotive Load Dump Protection | Engine Control Unit (ECU) Input Protection |
|---|---|
Use Scenario: Suppresses 35–40 V, 10 ms load dump transients generated when alternator field coil is disconnected while charging. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ECU input stage to clamp overvoltage before LDO or microcontroller damage occurs. Use Value: Limits clamped voltage to ≤24.4 V at 150 A, ensuring protected 12 V logic remains within absolute maximum ratings. |
Use Scenario: Protects analog sensor inputs (e.g., MAP, TPS) and CAN transceiver power rails from coupled transients in engine bay harnesses. IC Role / Device Role / Timing Role: Fast-response shunt protector that activates within nanoseconds to divert surge energy away from precision front-end circuitry. Use Value: Low leakage (<10 μA) avoids signal offset errors; 175 °C rating allows placement near hot components without derating. |
| Body Control Module (BCM) Power Rail | ADAS Camera Power Supply Protection |
Use Scenario: Guards 12 V supply lines feeding door modules, lighting controllers, and window lift drivers against inductive switching spikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main BCM input, coordinated with upstream fuses and downstream DC/DC converters. Use Value: 3600 W PPPM handles multiple simultaneous load dumps; DO-218AB heatsink enables direct thermal coupling to chassis ground. |
Use Scenario: Shields 12 V camera module power input from ignition noise and alternator ripple in rear-view or surround-view systems. IC Role / Device Role / Timing Role: Final-stage transient suppressor before buck converter, preventing voltage overshoot from disrupting image sensor timing. Use Value: Tight VBR tolerance (±5 %) ensures consistent clamping onset across production units; AEC-Q101 qualification guarantees field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM5S15AHM3_A/I | Same electrical specs but HM3 suffix indicates halogen-free, RoHS-compliant molding compound and enhanced moisture sensitivity level (MSL 1 confirmed per J-STD-020). | Preferred for new designs targeting strict environmental compliance; identical footprint and clamping behavior. | Select SM5S15AHM3_A/I for new automotive programs requiring halogen-free materials and documented MSL 1 reflow assurance. |
| SMAJ15A | Lower PPPM (400 W), SMA package (DO-214AC), higher RθJA (95 °C/W), not AEC-Q101 qualified. | Suitable only for non-automotive, low-energy industrial I/O protection; cannot replace SM5S15AHE3_A/I in load dump scenarios. | Use SMAJ15A only in cost-sensitive consumer or industrial applications where 3600 W surge capability and 175 °C operation are unnecessary. |
Compared with SM5S15AHE3_A/I, SM5S15AHM3_A/I offers identical protection performance with improved environmental compliance, while SMAJ15A provides basic clamping at significantly reduced surge capacity and thermal capability - making it unsuitable for automotive load dump duty.
Availability
SM5S15AHE3_A/I is available at Aetrix Electronics and suitable for automotive load dump protection, engine control unit (ECU) input safeguarding, and body control module (BCM) power rail stabilization requiring stable component supply across extended temperature and high-reliability environments.
Supply support for SM5S15AHE3_A/I 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 transient protection devices for automotive, industrial, and computing markets.
The SM5S series is engineered for AEC-Q101-compliant automotive transient suppression, emphasizing high-temperature stability (175 °C), high surge robustness (3600 W), and DO-218AB thermal efficiency - directly addressing load dump and ISO7637-2 compliance needs.
FAQ
What is the clamping voltage of SM5S15AHE3_A/I at its rated peak pulse current?
The SM5S15AHE3_A/I clamps to a maximum of 24.4 V at 150 A peak pulse current (10/1000 μs waveform), as specified in the Electrical Characteristics table. This value ensures downstream 12 V ICs remain within safe operating voltage limits during automotive load dump events. The SM5S15AHE3_A/I achieves this with minimal voltage overshoot due to its optimized junction passivation and low dynamic impedance.
Is SM5S15AHE3_A/I suitable for new automotive designs?
No - the Vishay datasheet explicitly states "Not For New Designs" for the SM5S10A–SM5S36A family, recommending SM5S10AHM3–SM5S85AHM3 as alternatives. While SM5S15AHE3_A/I remains functional and AEC-Q101 qualified, new programs should use the HM3 variant for updated material compliance and verified MSL 1 performance. SM5S15AHE3_A/I is supported for legacy production continuity only.
How does the DO-218AB package of SM5S15AHE3_A/I improve thermal performance?
The DO-218AB package integrates a metal heatsink as the anode terminal, enabling direct thermal conduction from the silicon junction to the PCB copper pour. With RθJM = 0.45 °C/W, SM5S15AHE3_A/I dissipates surge energy more efficiently than SMA/SMB packages. This design allows sustained operation at TJ = 175 °C and supports repeated 3600 W surges without thermal runaway - a key advantage for under-hood automotive placement.
What is the reverse leakage current specification for SM5S15AHE3_A/I at 15 V and 25 °C?
At VWM = 15 V and TA = 25 °C, the SM5S15AHE3_A/I exhibits a maximum reverse leakage current of 10 μA, as stated in the Electrical Characteristics table. This low ID ensures minimal standby power loss in always-on vehicle modules and avoids false triggering in high-impedance sensor interfaces. Leakage remains <15 μA even at TJ = 175 °C, supporting reliable operation across full automotive temperature range.
Does SM5S15AHE3_A/I meet ISO7637-2 requirements for automotive load dump?
Yes - the SM5S15AHE3_A/I is validated to meet ISO7637-2 Load Dump Pulse 5a (35 V, 10 ms exponential) under specified test conditions. Its 3600 W peak pulse power rating and 24.4 V clamping voltage at 150 A ensure compliance with OEM-level surge immunity requirements. The device's 175 °C junction rating and AEC-Q101 qualification further confirm suitability for certified automotive power rail protection applications.
SM5S15AHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 148A
- Power - Peak Pulse:
- 3600W (3.6kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218AB
SM5S15AHE3_A/I FAQ
1.How can I place an order for SM5S15AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM5S15AHE3_A/I 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 SM5S15AHE3_A/I reliable?
The price and inventory of SM5S15AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM5S15AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SM5S15AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM5S15AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM5S15AHE3_A/I?
SM5S15AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM5S15AHE3_A/I 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 SM5S15AHE3_A/I?
For technical support, including SM5S15AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM5S15AHE3_A/I requirements.
6.How does Aetrix verify that SM5S15AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SM5S15AHE3_A/I 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 SM5S15AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SM5S15AHE3_A/I?
All SM5S15AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM5S15AHE3_A/I, 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 SM5S15AHE3_A/I part is unused and in its original packaging.
Return procedure for SM5S15AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM5S15AHE3_A/I 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 …
