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Vishay General Semiconductor - Diodes Division SMA5J16AHM3_A/H
- Part No.:
- SMA5J16AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J16AHM3_A/H.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,216
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Product details
Overview
SMA5J16AHM3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on power and signal lines. It features a 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown voltage (VBR), 26.0 V clamping voltage at 19.2 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 μs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J16AHM3_A/H datasheet, SMA5J16AHM3_A/H pinout, SMA5J16AHM3_A/H application, or SMA5J16AHM3_A/H equivalent, key selection criteria include clamping performance under 500 W surge, AEC-Q101 qualification status, halogen-free RoHS compliance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable avalanche behavior and low incremental surge resistance. Its thermal design relies on junction-to-lead resistance of 25 °C/W and junction-to-ambient resistance of 80 °C/W when mounted per recommended pad layout.
The SMA5J16AHM3_A/H delivers fast response time (<1 ns), meets MSL level 1 per J-STD-020 (peak reflow 260 °C), and supports surge immunity up to 40 A IFSM (8.3 ms half-sine) - critical for protecting downstream components against inductive switching transients and ESD events in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working range for protected line. |
| VBR min/max | 17.8 V / 19.7 V - guaranteed avalanche breakdown range at 1 mA test current; ensures consistent turn-on threshold across production lots. |
| VC @ IPPM | 26.0 V at 19.2 A - clamped voltage during 500 W 10/1000 μs surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 500 W - peak pulse power handling capability; enables robust protection against lightning-induced surges and load dump events. |
| TJ max | +150 °C - maximum junction temperature; allows operation in under-hood automotive or industrial enclosures without derating. |
| Package | SMA (DO-214AC) - surface-mount package with 5.28 mm × 4.50 mm footprint and 2.29 mm height; optimized for high-density PCB layouts. |
| Compliance | AEC-Q101 qualified, halogen-free, RoHS-compliant - meets automotive reliability and environmental requirements for front-end power stages. |
Pinout & Package
Package: SMA (DO-214AC), molded epoxy case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-impedance return path; forms current sink during reverse-biased clamping event. |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail); avalanche conduction occurs when voltage exceeds VBR relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMA package | Enables placement in space-constrained automotive ECUs and industrial controllers without compromising thermal relief or mechanical stability. |
| Glass-passivated junction | Ensures long-term parameter stability and reduced leakage drift over temperature and lifetime versus non-passivated alternatives. |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without moisture-related popcorning or delamination. |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control, body electronics, and ADAS power domains. |
| Halogen-free construction | Meets IEC 61249-2-21 and JEDEC J-STD-70B requirements for environmentally responsible manufacturing and end-of-life disposal. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in engine control units against load dump transients (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Unidirectional TVS clamp absorbing up to 500 W surge energy while limiting voltage to ≤26.0 V. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers during alternator regulation failure. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Fast-response (sub-ns) clamping element placed adjacent to connector entry points. Use Value: Maintains signal integrity below 26.0 V clamping threshold, avoiding ADC saturation or op-amp rail-to-rail excursion. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters subjected to mains surges and capacitor discharge. IC Role / Device Role / Timing Role: Standby-mode protector with 1.0 μA max reverse leakage at 16 V, minimizing standby power loss. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (2 kV) while preserving efficiency in energy-sensitive designs. |
Use Scenario: DC input protection for PoE-powered network switches exposed to induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-line TVS with 500 W PPPM rating coordinated with upstream fusing and PTCs. Use Value: Limits transient overshoot to <26.0 V during 10/1000 μs events, preventing damage to PMICs and Ethernet PHYs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J16AHE3_A/H | Same electrical specs but RoHS-compliant commercial grade (non-AEC-Q101); no halogen-free certification. | Approved for consumer and industrial use only; not qualified for automotive under-hood deployment. | Select when AEC-Q101 is not required and cost sensitivity favors standard-grade variant. |
| SMA6J16A-M3/61 | 600 W PPPM rating, higher IPPM (21.3 A), same VWM/VBR/VC; larger SMA package with different thermal resistance (RθJA = 70 °C/W). | Better suited for higher-energy surge environments (e.g., ISO 16750-2 Class IV); requires updated thermal layout. | Choose when system-level surge testing exceeds 500 W requirements and board space permits revised pad design. |
Compared with SMA5J16AHE3_A/H, the SMA5J16AHM3_A/H adds halogen-free compliance and AEC-Q101 qualification without sacrificing clamping performance; versus SMA6J16A-M3/61, it trades 100 W peak power headroom for tighter thermal budget and verified automotive qualification.
Availability
SMA5J16AHM3_A/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC feed surge suppression requiring stable component supply across multi-year production cycles.
Supply support for SMA5J16AHM3_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, MOSFETs, and protection devices with emphasis on reliability, precision, and application-specific optimization.
The SMA5J series was engineered for high-power-density transient suppression in automotive and industrial systems, balancing clamping speed, energy absorption, and manufacturability in compact surface-mount packages.
FAQ
What is the clamping voltage of the SMA5J16AHM3_A/H under a 500 W surge?
The SMA5J16AHM3_A/H clamps to a maximum of 26.0 V at its rated peak pulse current of 19.2 A, corresponding to a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 standards and guarantees protection margin for 16 V nominal rails. The SMA5J16AHM3_A/H maintains this clamping performance across its full operating temperature range of -55 °C to +150 °C.
Is the SMA5J16AHM3_A/H qualified for automotive applications?
Yes, the SMA5J16AHM3_A/H carries AEC-Q101 qualification, confirming its suitability for automotive electronic systems including engine control, body electronics, and ADAS modules. The "HM3" suffix denotes halogen-free, RoHS-compliant construction with whisker-resistant plating meeting JESD 201 Class 2. The SMA5J16AHM3_A/H is specifically intended for under-hood and chassis-mounted applications where reliability under thermal cycling and vibration is critical.
What does the "_A/H" suffix mean in SMA5J16AHM3_A/H?
The "_A/H" suffix in SMA5J16AHM3_A/H indicates packaging configuration: "A" denotes revision level A per Vishay's internal documentation, and "H" specifies the preferred package code for 7-inch diameter plastic tape and reel with 1800 units per reel. This ordering code aligns with Vishay's standardized delivery mode for high-volume SMT assembly. The SMA5J16AHM3_A/H is supplied in this format with full traceability and moisture sensitivity level (MSL) 1 compliance.
How does the SMA5J16AHM3_A/H compare to bidirectional TVS diodes like SMA5J16CA?
The SMA5J16AHM3_A/H is unidirectional and intended for DC line protection where polarity is fixed, offering lower leakage and higher surge current capability in forward conduction. In contrast, SMA5J16CA is bidirectional and used for AC or floating signal lines. The SMA5J16AHM3_A/H cannot replace SMA5J16CA in AC-coupled circuits due to polarity dependence and lack of symmetrical clamping. Their VWM and VC values differ significantly - SMA5J16AHM3_A/H has 16 V VWM, while SMA5J16CA has 13.6 V VWM.
What is the thermal resistance of the SMA5J16AHM3_A/H, and how does it affect layout?
The SMA5J16AHM3_A/H has a typical junction-to-lead thermal resistance (RθJL) of 25 °C/W and junction-to-ambient resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe operation at full 500 W surge rating, PCB layout must replicate this minimum copper area and avoid thermal bottlenecks. Reducing pad size increases junction temperature and may trigger premature thermal shutdown or degradation during repeated surges. The SMA5J16AHM3_A/H datasheet provides exact mounting dimensions in inches and millimeters for verification.
SMA5J16AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 19.2A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J16AHM3_A/H FAQ
1.How can I place an order for SMA5J16AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J16AHM3_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 SMA5J16AHM3_A/H reliable?
The price and inventory of SMA5J16AHM3_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 SMA5J16AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMA5J16AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J16AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J16AHM3_A/H?
SMA5J16AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J16AHM3_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 SMA5J16AHM3_A/H?
For technical support, including SMA5J16AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J16AHM3_A/H requirements.
6.How does Aetrix verify that SMA5J16AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMA5J16AHM3_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 SMA5J16AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMA5J16AHM3_A/H?
All SMA5J16AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J16AHM3_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 SMA5J16AHM3_A/H part is unused and in its original packaging.
Return procedure for SMA5J16AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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