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Vishay General Semiconductor - Diodes Division TPSMA36AHM3_B/I
- Part No.:
- TPSMA36AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA36AHM3_B/I.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPSMA36AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor in SMA (DO-214AC) package, rated for 36.0 V breakdown voltage (VBR), 400 W peak pulse power (10/1000 µs), 49.9 V clamping voltage at 8.0 A surge current, and 185 °C maximum junction temperature - deployed to protect MOSFETs and signal lines in automotive power electronics against lightning-induced transients.
For engineers reviewing the TPSMA36AHM3_B/I datasheet, TPSMA36AHM3_B/I pinout, TPSMA36AHM3_B/I application, or TPSMA36AHM3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, MSL Level 1 rating, 30.8 V stand-off voltage (VWM), and halogen-free RoHS-compliant construction per ordering suffix HM3.
Technical Context
This device operates as a silicon avalanche diode with passivated anisotropic rectifier technology, delivering fast response time and low incremental surge resistance to clamp transient overvoltages before downstream ICs are damaged. Its TJ = 185 °C capability enables operation in under-hood automotive environments where thermal derating of pulse power must be precisely modeled using αT = 0.090 %/°C.
The TPSMA36AHM3_B/I is designed for single-pulse and low-duty-cycle repetitive surge suppression per IEC 61000-4-5, with clamping performance validated under 10/1000 µs waveform and mounted on 5.0 mm × 5.0 mm copper pads. It meets JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow profile (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 34.2 V / 36.0 V / 37.8 V - ensures reliable avalanche conduction onset above system operating voltage while accommodating ±5% tolerance and temperature drift |
| VWM | 30.8 V - maximum continuous reverse working voltage; must exceed normal circuit rail voltage to prevent leakage-induced power loss |
| VC @ IPPM | 49.9 V at 8.0 A - defines worst-case voltage seen by protected load during 400 W transient; critical for MOSFET VDSS margining |
| PPPM | 400 W (10/1000 µs) - peak pulse power rating used to size TVS for ISO 7637-2 Pulse 1/2/5a energy levels in 12 V automotive systems |
| TJ max. | 185 °C - enables use in high-temperature zones (e.g., engine control units) without derating failure risk beyond datasheet curves |
| IR @ VWM | 1.0 µA - ultra-low reverse leakage preserves battery life in always-on automotive modules such as body control units |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with cathode band marking; compatible with automated pick-and-place and reflow |
Pinout & Package
Package: SMA (DO-214AC), molded epoxy case meeting UL 94 V-0, matte tin-plated terminals solderable per J-STD-002 and JESD 22-B102, cathode denoted by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; connected to ground or low-side reference | Provides return path for clamped surge current; must be routed with low-inductance trace to minimize V = L·di/dt overshoot |
| Cathode | Transient voltage sensing node; connected to line being protected | Acts as high-impedance monitor until VBR exceeded; polarity marking ensures correct orientation to avoid catastrophic short |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; required for powertrain and chassis ECUs |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets EU Directive 2011/65/EU and JEDEC JS709E; eliminates brominated flame retardants without compromising UL 94 V-0 rating |
| MSL Level 1 (260 °C peak) | Allows unlimited floor life and single-reflow processing without baking; reduces manufacturing cost and handling complexity |
| 185 °C junction rating | Supports operation in ambient temperatures up to 150 °C with full pulse power derating per Fig. 2; eliminates need for thermal derating margins |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage stress on protected devices; improves immunity margin for 40 V-rated MOSFETs in 24 V commercial vehicle systems |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Lines |
|---|---|
|
Use Scenario: Protection of 24 V supply rails feeding solenoid drivers and relay coils in vehicle body control modules. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between fused battery input and DC-DC converter input stage. Use Value: Clamps ISO 7637-2 Pulse 5a (500 V/2 Ω) transients to ≤49.9 V, preventing latch-up or gate oxide rupture in downstream buck controllers. |
Use Scenario: Shielding analog output lines (4–20 mA) of pressure and temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional TVS installed at sensor connector interface to shunt induced surges from nearby motor drives. Use Value: Sub-1 ns response time limits voltage excursion during 1 kV EFT bursts, preserving ADC reference integrity and measurement accuracy. |
| Telecom DC Power Feeds | Consumer Appliance Motor Control |
|
Use Scenario: Safeguarding -48 V DC power inputs of base station remote radio units exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary protection device mounted directly at board edge connector, upstream of DC-DC isolation stage. Use Value: 400 W pulse rating handles 10/1000 µs lightning waveforms per IEC 61000-4-5 Level 4, enabling compliance without cascaded protection stages. |
Use Scenario: Protecting half-bridge gate drivers in smart washing machine inverter boards subjected to inductive kickback from brushless motor commutation. IC Role / Device Role / Timing Role: Localized TVS across high-side and low-side driver supply pins to suppress VDS spikes. Use Value: 30.8 V VWM allows operation with 33 V auxiliary rail while clamping transients below 50 V, ensuring robustness of 60 V-rated gate drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36AHE3_A/H | Same VBR (34.2–37.8 V), same SMA package, but HE3 suffix indicates RoHS-compliant + AEC-Q101, no halogen-free claim | Lacks halogen-free certification; acceptable for non-automotive industrial use where material compliance is less stringent | Select when halogen-free requirement is waived and cost optimization is prioritized over material specification |
| SMCJ36A-Q | Higher PPPM = 1500 W, DO-214AB (SMC) package, larger footprint and thermal mass | Used where higher energy transients (e.g., ISO 16750-2 Load Dump) require greater pulse handling; not drop-in due to package mismatch | Choose only if system-level testing confirms need for >400 W clamping; requires PCB layout change |
Compared with SMAJ36AHE3_A/H and SMCJ36A-Q, the TPSMA36AHM3_B/I uniquely combines AEC-Q101 qualification, halogen-free construction, and SMA footprint - making it optimal for space-constrained, thermally demanding automotive modules requiring full material compliance.
Availability
TPSMA36AHM3_B/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interfaces, telecom DC feeds, and consumer appliance motor control requiring stable component supply across production lifecycles.
Supply support for TPSMA36AHM3_B/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 diodes, rectifiers, and protection devices with emphasis on high-reliability and automotive-grade performance.
The TPSMA series belongs to Vishay's PAR® transient voltage suppressor product line, engineered specifically for robust, high-temperature surge protection in automotive and industrial power systems where long-term stability under thermal stress is mandatory.
FAQ
What is the clamping voltage of the TPSMA36AHM3_B/I at its rated peak pulse current?
The TPSMA36AHM3_B/I has a maximum clamping voltage (VC) of 49.9 V at 8.0 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured with the device mounted on 5.0 mm × 5.0 mm copper pads and defines the upper voltage limit imposed on protected circuitry during transient events. The TPSMA36AHM3_B/I maintains this clamping performance across its specified operating temperature range.
Is the TPSMA36AHM3_B/I qualified for automotive applications?
Yes, the TPSMA36AHM3_B/I is AEC-Q101 qualified, as confirmed by Vishay's documentation for HM3-suffix parts. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing - validating suitability for automotive powertrain, chassis, and body electronics. The TPSMA36AHM3_B/I also meets JESD201 Class 2 whisker resistance requirements.
What does the "HM3" suffix indicate in TPSMA36AHM3_B/I?
The "HM3" suffix in TPSMA36AHM3_B/I denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. Unlike HE3 variants, HM3 parts eliminate brominated and chlorinated flame retardants while maintaining UL 94 V-0 flammability rating. The "B/I" portion specifies revision B and 13-inch tape-and-reel packaging (7500 units per reel), per Vishay's ordering nomenclature.
How does the TPSMA36AHM3_B/I compare to standard SMAJ-series TVS diodes?
The TPSMA36AHM3_B/I shares identical electrical ratings (VBR, VC, PPPM) with SMAJ36A variants but adds halogen-free compliance and tighter thermal specifications (TJ = 185 °C vs. 150 °C for many SMAJ parts). Its optimized passivated anisotropic rectifier design delivers lower incremental surge resistance, improving clamping consistency under repeated transients - a key distinction verified in Vishay's PAR® platform characterization.
What is the maximum reverse leakage current of the TPSMA36AHM3_B/I at its stand-off voltage?
The TPSMA36AHM3_B/I exhibits a maximum reverse leakage current (IR) of 1.0 µA at its stand-off voltage (VWM = 30.8 V) and ambient temperature (TA = 25 °C). At elevated junction temperature (TJ = 150 °C), leakage remains ≤1000 µA - a critical parameter for low-power always-on automotive modules where cumulative leakage could impact battery drain budgets. This value is confirmed in Table 1 of Vishay Document 88405.
TPSMA36AHM3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 8A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
TPSMA36AHM3_B/I FAQ
1.How can I place an order for TPSMA36AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA36AHM3_B/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 TPSMA36AHM3_B/I reliable?
The price and inventory of TPSMA36AHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA36AHM3_B/I is usually 5 days.
3.What payment methods are accepted for TPSMA36AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA36AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA36AHM3_B/I?
TPSMA36AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA36AHM3_B/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 TPSMA36AHM3_B/I?
For technical support, including TPSMA36AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA36AHM3_B/I requirements.
6.How does Aetrix verify that TPSMA36AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMA36AHM3_B/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 TPSMA36AHM3_B/I meets industry standards.
7.What is the process for return or replacement of TPSMA36AHM3_B/I?
All TPSMA36AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA36AHM3_B/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 TPSMA36AHM3_B/I part is unused and in its original packaging.
Return procedure for TPSMA36AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA36AHM3_B/I Tags
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Diodes Incorporated
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