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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Diode Arrays

Taiwan Semiconductor Corporation HER1601PTH

Name: HER1601PTH
Brand: Taiwan Semiconductor Corporation
SKU: HER1601PTH
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HER1601PTH

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Diode Arrays

Package:: TO-247-3

Datasheet:: HER1601PTH.pdf

Description:: DIODE ARRAY GP 50V 16A TO247AD

Quantity:: RFQ Add To RFQ list

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Product details

Overview

HER1601PTH from Taiwan Semiconductor is a high-efficiency, AEC-Q101-qualified ultrafast recovery rectifier diode in TO-247AD package, rated for 16 A average forward current, 50 V repetitive peak reverse voltage, and 200 A non-repetitive surge current - designed for freewheeling and snubber circuits in automotive DC-DC converters.

For engineers reviewing the HER1601PTH datasheet, HER1601PTH pinout, HER1601PTH application, or HER1601PTH equivalent, key selection factors include its 50 V V_RRM, 1.0 V max forward voltage at 8 A/25°C, 50 ns reverse recovery time, dual-die construction, and AEC-Q101 qualification for under-hood automotive use.

Technical Context

This device implements an ultrafast recovery silicon rectifier structure with low Q_rr and optimized carrier lifetime control to minimize switching losses in high-frequency power conversion topologies. Its dual-die configuration enables symmetrical thermal distribution and supports parallel operation without external balancing components.

The HER1601PTH operates across –55°C to +150°C junction temperature range and delivers stable performance under pulsed forward currents up to 200 A (8.3 ms half-sine), with <10 µA reverse leakage at 25°C and <500 µA at 125°C - critical for maintaining efficiency in thermally constrained environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	50 V - maximum blocking voltage before avalanche; defines safe operating range in 12–48 V automotive bus applications
I_F	16 A - continuous average forward current at case temperature ≤75°C; supports high-power DC-DC stages without forced cooling
I_FSM	200 A - single-cycle surge rating; withstands inrush and fault transients in motor drives and SMPS
V_F (max)	1.0 V @ 8 A, 25°C - low conduction loss enabling >95% efficiency in 48 V output converters
t_rr	50 ns - ultrafast recovery reduces switching losses and EMI in 100–500 kHz converters
Junction temp	–55°C to +150°C - AEC-Q101-compliant thermal range for engine compartment deployment
Package	TO-247AD (TO-3P) - industry-standard high-power package with low thermal resistance and mechanical robustness

Pinout & Package

TO-247AD (TO-3P) package with three terminals: Anode (pin 1), Cathode (pin 2), and case-connected cathode tab (pin 3). Mounting torque ≤1.13 N·m; matte tin-plated leads compliant with J-STD-002 solderability.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Input current entry point	Connected to positive rail or switch node; must handle full load current and surge peaks
Cathode	Output current exit point	Drives load or return path; electrically tied to metal tab for thermal and electrical grounding
Metal tab	Cathode terminal & thermal interface	Provides primary heat dissipation path to heatsink; requires insulating washer if isolated mounting

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock per stress test requirements
Ultrafast 50 ns t_rr	Enables high-frequency operation up to 500 kHz with minimal reverse recovery loss and reduced EMI generation
Dual-die construction	Improves current sharing reliability and thermal symmetry; eliminates need for external current-balancing resistors
Low V_F (1.0 V max)	Reduces conduction loss by ~25% vs. standard FRD counterparts at 8 A, directly improving system thermal budget
UL Recognized #E-326243	Confirms flammability compliance (UL 94V-0) and safety certification for end-equipment regulatory approval

Applications

Automotive DC-DC Converters	Industrial Snubber Circuits
Use Scenario: Step-down conversion from 48 V battery to 12 V auxiliary rail in mild-hybrid vehicles. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck converter secondary side; conducts during low-side FET off-time. Use Value: 50 ns t_rr and 1.0 V V_F reduce switching loss and improve efficiency over standard FRDs, extending battery range.	Use Scenario: RCD snubber network across IGBTs in motor drive inverters operating at 10–20 kHz. IC Role / Device Role / Timing Role: Clamps voltage spikes during IGBT turn-off by absorbing stored inductive energy. Use Value: Low V_F and fast recovery minimize snubber conduction loss and ensure reliable clamping without thermal runaway.
LED Driver Power Supplies	Freewheeling in Relay/Contactor Drivers
Use Scenario: Secondary-side rectification in isolated flyback LED drivers for commercial lighting fixtures. IC Role / Device Role / Timing Role: Output rectifier converting transformer secondary AC to regulated DC for constant-current LED strings. Use Value: 16 A I_F rating supports high-lumen designs; AEC-Q101 qualification ensures long-term reliability in enclosed luminaires.	Use Scenario: Freewheeling path for inductive coil energy dissipation in 24 V industrial PLC output modules. IC Role / Device Role / Timing Role: Provides low-loss return path when relay coil is de-energized, preventing voltage overshoot on driver IC. Use Value: 200 A I_FSM safely absorbs large inductive kickback pulses without degradation or failure.

Automotive DC-DC Converters

Industrial Snubber Circuits

Use Scenario: Step-down conversion from 48 V battery to 12 V auxiliary rail in mild-hybrid vehicles.

IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck converter secondary side; conducts during low-side FET off-time.

Use Value: 50 ns t_rr and 1.0 V V_F reduce switching loss and improve efficiency over standard FRDs, extending battery range.

Use Scenario: RCD snubber network across IGBTs in motor drive inverters operating at 10–20 kHz.

IC Role / Device Role / Timing Role: Clamps voltage spikes during IGBT turn-off by absorbing stored inductive energy.

Use Value: Low V_F and fast recovery minimize snubber conduction loss and ensure reliable clamping without thermal runaway.

LED Driver Power Supplies

Freewheeling in Relay/Contactor Drivers

Use Scenario: Secondary-side rectification in isolated flyback LED drivers for commercial lighting fixtures.

IC Role / Device Role / Timing Role: Output rectifier converting transformer secondary AC to regulated DC for constant-current LED strings.

Use Value: 16 A I_F rating supports high-lumen designs; AEC-Q101 qualification ensures long-term reliability in enclosed luminaires.

Use Scenario: Freewheeling path for inductive coil energy dissipation in 24 V industrial PLC output modules.

IC Role / Device Role / Timing Role: Provides low-loss return path when relay coil is de-energized, preventing voltage overshoot on driver IC.

Use Value: 200 A I_FSM safely absorbs large inductive kickback pulses without degradation or failure.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultrafast rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1605D	50 V V_RRM, 16 A I_F, 50 ns t_rr, but TO-247AC package (non-isolated tab); no AEC-Q101 qualification	Suitable for industrial SMPS but not automotive qualified systems	Select when cost sensitivity outweighs automotive qualification requirement
IXYS MUR1620CT	200 V V_RRM, same I_F/t_rr, TO-247 package with isolated tab; AEC-Q101 not claimed	Higher voltage margin allows reuse in 24–48 V systems with transient headroom, but lacks automotive validation	Choose where higher V_RRM tolerance is prioritized over automotive compliance

Compared with STTH1605D and IXYS MUR1620CT, the HER1601PTH uniquely combines 50 V rating, 50 ns recovery, TO-247AD isolation, and AEC-Q101 qualification - making it the only option validated for automotive-grade freewheeling in space-constrained, thermally demanding environments.

Availability

HER1601PTH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial snubber networks, and LED driver power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for HER1601PTH 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 analog and power discrete manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and consumer markets since 1979.

The HER series ultrafast rectifiers are engineered specifically for high-efficiency, high-reliability power conversion in automotive and industrial switching applications - emphasizing low V_F, fast t_rr, and extended temperature operation.

FAQ

What is the maximum junction temperature rating for HER1601PTH?

The HER1601PTH has a maximum junction temperature (T_J) of +150°C and a minimum of –55°C, fully compliant with AEC-Q101 temperature cycling requirements. This rating enables reliable operation in under-hood automotive environments and high-ambient industrial settings where thermal management is constrained. The HER1601PTH maintains specified electrical parameters across this full range when derated per the forward current derating curve.

Is HER1601PTH pin-compatible with standard TO-247 rectifiers like STTH1605D?

Yes, the HER1601PTH uses the TO-247AD (TO-3P) package with identical mechanical footprint and terminal layout as STTH1605D and other industry-standard TO-247 rectifiers. However, the HER1601PTH features an electrically isolated metal tab, whereas STTH1605D uses TO-247AC with tab connected to cathode - requiring verification of heatsink isolation in the target design before substitution.

Does HER1601PTH meet RoHS and halogen-free requirements?

Yes, the HER1601PTH is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound meets UL 94V-0 flammability rating, and matte tin-plated leads satisfy J-STD-002 solderability standards. These certifications are documented in Taiwan Semiconductor's official product change notices and material declarations for HER1601PTH.

What is the reverse recovery time (t_rr) specification for HER1601PTH?

The HER1601PTH has a maximum reverse recovery time (t_rr) of 50 ns under test conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This ultrafast recovery characteristic minimizes switching losses and EMI in high-frequency power converters operating up to 500 kHz, distinguishing it from standard fast recovery diodes with t_rr > 100 ns.

Can HER1601PTH be used in freewheeling applications for inductive loads?

Yes, the HER1601PTH is explicitly designed for freewheeling applications, as confirmed by Taiwan Semiconductor's application notes and datasheet sections. Its 200 A I_FSM rating and 50 ns t_rr enable safe, low-loss energy recirculation in relay drivers, solenoid controls, and motor phase-leg circuits - preventing voltage overshoot and protecting upstream switching devices.

HER1601PTH Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: TO-247-3

Packaging:: Tube

Product Status:: Active

Diode Configuration:: 1 Pair Common Cathode

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 50 V

Current - Average Rectified (Io) (per Diode):: 16A

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 8 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 50 ns

Current - Reverse Leakage @ Vr:: 10 µA @ 50 V

Operating Temperature - Junction:: -55°C ~ 150°C

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Through Hole

Supplier Device Package:: TO-247AD (TO-3P)

HER1601PTH FAQ

1.How can I place an order for HER1601PTH through Aetrix?

Please submit a Request for Quotation (RFQ) for HER1601PTH 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 HER1601PTH reliable?

The price and inventory of HER1601PTH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER1601PTH is usually 5 days.

3.What payment methods are accepted for HER1601PTH?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER1601PTH transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HER1601PTH?

HER1601PTH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HER1601PTH 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 HER1601PTH?

For technical support, including HER1601PTH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER1601PTH requirements.

6.How does Aetrix verify that HER1601PTH is sourced from the original manufacturer or authorized distributors?

All HER1601PTH 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 HER1601PTH meets industry standards.

7.What is the process for return or replacement of HER1601PTH?

All HER1601PTH units undergo pre-shipment inspection (PSI). If there is an issue with HER1601PTH, 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 HER1601PTH part is unused and in its original packaging.

Return procedure for HER1601PTH:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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