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Taiwan Semiconductor Corporation SMDJ16AH
- Part No.:
- SMDJ16AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMDJ16AH.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,217
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Product details
Overview
SMDJ16AH from Taiwan Semiconductor is a unidirectional 3000W surface-mount transient voltage suppressor (TVS) diode with a 16V working stand-off voltage, 17.8–19.7V breakdown voltage at 1mA, and 26.0V maximum clamping voltage at 115.4A peak pulse current. It is AEC-Q101 qualified and designed for automotive and industrial ESD/transient protection in power rails and I/O lines.
For engineers reviewing the SMDJ16AH datasheet, SMDJ16AH pinout, SMDJ16AH application, or SMDJ16AH equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, DO-214AB (SMC) package compatibility, junction temperature range (–55°C to +175°C), and unidirectional surge handling up to 3000W.
Technical Context
The SMDJ16AH operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology for stable breakdown and fast response (<1.0ps). Its clamping behavior is defined by a 10/1000μs waveform per R.E.A., with thermal resistance of 75°C/W (junction-to-ambient) and 15°C/W (junction-to-lead).
It meets ISO 7637-2 for automotive load-dump and switching transients, supports steady-state power dissipation of 6.5W at 25°C, and withstands 300A non-repetitive forward surge (8.3ms half-sine) - critical for protecting downstream DC-DC converters and microcontrollers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR @ IT=1mA | 17.8–19.7 V - Guaranteed avalanche breakdown range, ensuring predictable turn-on during transients |
| VC @ IPPM=115.4A | 26.0 V - Clamped voltage during 3000W peak pulse, limiting stress on protected ICs |
| PPK | 3000 W - Peak pulse power rating per 1ms exponential decay waveform (Fig.5) |
| TJ Range | –55°C to +175°C - Full operational junction temperature range, supporting under-hood automotive use |
| RθJA | 75 °C/W - Thermal resistance defining derating above 25°C ambient (per Fig.2) |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, polarity indicated by cathode band. Weight: 0.290g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Transient return path | Connected to ground or low-impedance return in unidirectional configuration |
| Cathode | Protected line connection / Surge sink node | Connected to the line being protected (e.g., 12V rail); marked with band |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Glass-passivated junction | Enhances long-term stability and leakage control over temperature and life cycle |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching), and Pulse 3a/3b (line impedance transients) |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow; compatible with standard SMT assembly processes |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery-fed ECUs exposed to load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges before they reach PMICs or MCUs. Use Value: Limits clamped voltage to 26.0V during 3000W pulses, preventing damage to 3.3V/5V logic powered from buck regulators. | Use Scenario: Analog sensor inputs (e.g., pressure, temp) in factory automation systems subject to ESD and cable-induced transients. IC Role / Device Role / Timing Role: Front-end transient suppressor on differential or single-ended signal lines upstream of op-amps or ADC drivers. Use Value: Sub-1ps response ensures clamping occurs before sensitive front-end circuitry experiences overvoltage stress. |
| Telecom DC Power Input Protection | Consumer USB-C Power Delivery Line Protection |
Use Scenario: 48V DC input stage of PoE-powered switches or base stations. IC Role / Device Role / Timing Role: Primary surge suppression device on primary-side DC bus, coordinated with upstream fuses and secondary-side TVS arrays. Use Value: 3000W rating handles high-energy lightning-induced surges per IEC 61000-4-5 Level 4 when used with proper PCB layout and grounding. | Use Scenario: VBUS line in USB-C receptacles where hot-plug events and ESD cause fast-rising transients. IC Role / Device Role / Timing Role: Unidirectional clamping device between VBUS and GND, sized to survive repeated ±15kV contact ESD per IEC 61000-4-2. Use Value: 1µA max reverse leakage at 16V ensures minimal standby current impact on battery-powered devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC16 | Lower PPK = 1500W; VC = 27.7V @ 54.2A; DO-214AC (SMA) package | Not suitable for ISO 7637-2 Pulse 1; limited to lower-energy transients | Select SAC16 only for cost-sensitive consumer applications with <1500W surge requirements and SMA footprint constraints. |
| SMCJ16A | Same DO-214AB (SMC) package; identical VWM/VBR/VC; PPK = 3000W; not AEC-Q101 qualified | Lacks automotive qualification; may require additional validation for automotive OEM programs | Choose SMCJ16A for industrial or telecom designs where AEC-Q101 is not mandated and same mechanical fit is required. |
Compared with SAC16 and SMCJ16A, the SMDJ16AH delivers certified automotive reliability (AEC-Q101), full ISO 7637-2 immunity, and guaranteed 3000W clamping in the industry-standard SMC package - making it the preferred choice for safety-critical 12V/24V vehicle subsystems.
Availability
SMDJ16AH is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O cards, and telecom DC power supplies requiring stable component supply across multi-year production cycles.
Supply support for SMDJ16AH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive, industrial, and computing markets.
The SMDJ series was developed specifically for high-energy transient suppression in harsh-environment applications, emphasizing AEC-Q101 compliance, robust thermal performance, and standardized SMC packaging for automated manufacturing.
FAQ
What is the maximum clamping voltage of the SMDJ16AH under peak pulse conditions?
The SMDJ16AH has a maximum clamping voltage (VC) of 26.0 V when subjected to its rated peak pulse current of 115.4 A (10/1000 μs waveform). This value is measured per JEDEC standards and guarantees that protected downstream circuitry will not experience voltages exceeding 26.0 V during a 3000W transient event. The SMDJ16AH maintains this clamping performance across its full operating temperature range.
Is the SMDJ16AH suitable for bidirectional transient protection?
No, the SMDJ16AH is a unidirectional TVS diode intended for DC line protection with defined polarity (cathode band marking). For bidirectional protection, the SMDJ16CAH variant must be used. The SMDJ16AH does not conduct in reverse bias beyond its breakdown threshold and lacks symmetrical clamping in both directions - using it in AC or floating applications risks failure or inadequate protection.
Does the SMDJ16AH meet automotive qualification standards?
Yes, the SMDJ16AH is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD22-A114. This qualification confirms its suitability for automotive powertrain, chassis, and body electronics where reliability under thermal and electrical stress is mandatory. Documentation of test reports is available upon request for SMDJ16AH.
What is the thermal resistance and how does it affect PCB layout for the SMDJ16AH?
The SMDJ16AH has a junction-to-ambient thermal resistance (RθJA) of 75°C/W and junction-to-lead resistance (RθJL) of 15°C/W. To maintain safe operation at high ambient temperatures, PCB layout must include ≥25 mm² of 2-oz copper connected to both terminals, especially the cathode pad, to maximize heat spreading. Without adequate copper area, derating per Fig.2 applies - e.g., at 85°C ambient, maximum power drops to ~4.5W steady-state.
Can the SMDJ16AH be used in place of the older SMAJ16A in an existing design?
No direct replacement: the SMDJ16AH uses DO-214AB (SMC) packaging (7.11 × 6.22 mm), while SMAJ16A uses DO-214AC (SMA) (4.57 × 2.92 mm). Footprint, thermal mass, and surge current capability differ significantly - SMDJ16AH supports 3000W vs. SMAJ16A's 400W. Replacing SMAJ16A with SMDJ16AH requires PCB redesign, pad layout revision, and revalidation of clamping performance and thermal behavior.
SMDJ16AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- SMDJ
- 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):
- 115.4A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMDJ16AH FAQ
1.How can I place an order for SMDJ16AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDJ16AH 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 SMDJ16AH reliable?
The price and inventory of SMDJ16AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDJ16AH is usually 5 days.
3.What payment methods are accepted for SMDJ16AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDJ16AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDJ16AH?
SMDJ16AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDJ16AH 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 SMDJ16AH?
For technical support, including SMDJ16AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDJ16AH requirements.
6.How does Aetrix verify that SMDJ16AH is sourced from the original manufacturer or authorized distributors?
All SMDJ16AH 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 SMDJ16AH meets industry standards.
7.What is the process for return or replacement of SMDJ16AH?
All SMDJ16AH units undergo pre-shipment inspection (PSI). If there is an issue with SMDJ16AH, 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 SMDJ16AH part is unused and in its original packaging.
Return procedure for SMDJ16AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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